Bu11． Fac． Liberal Arts， Nagasaki Univ．，（Nat． Sci．），35（Special Issue）271−288．（March 1995）
Four species of／140んθα5 from intertidal and shallow water mudflats in the Sea of Ariake， Kyushu， Japan
（Crustacea， Decapoda， Alpheidae）
Yasuhiko MIYA
Abstract
Four species of the Brevirostris−and Edwardsii−groups of the genus、4φ舵粥are redescribed and illustrated from mudflats of the Sea of Ariake and adjacent waters．・
Three of them are new to the fヨuna of Japan． The paralectotype of、4勿乃θ循勿ρ10−
6勉♂6s Couti6re，1897 selected from the collection made by Dr． P． F． von Siebold and Mr． H． Burger in Japan，1823−1834 is briefly mentioned below． In addition， a fauna list of the family Alpheidae mainly from mudflats of the present waters is provided．
Keywords：Taxonomy， Alpheidae，、4φ舵πs spP．， new to Japan， association with gobiid fish， Sea of Ariake， mudflat， fauna list．
要 旨「
三矢泰彦（長崎大・教養・生物）：有明海の軟泥底に生息する甲殻十脚目テッポウエビ科 テッポウエビ属4種の分類学的記載：
テッポウエビ科テッポウエビ属の4種について、生態的知見も含めて、分類学的記載を 行い、図示した。これら4種はいずれも近年有明海、早崎瀬戸、橘湾の潮間帯あるいは浅 海の泥底から主に採集されたものであり、そのうち3種は日本新記録種である。・鋤舵麗 加ρZo6勉♂6s Couti6re，1897の後家模式標本（オランダ国立自然史博物館標本RMNHReg．
No．5543）の状態についても略述したが、これはシーボルトが日本から持ち帰った動物標本 コレクションの1つである。なお、上記海域の軟泥底からこれまでに採集されたことのあ るテッポウエビ類を表にまとめた。
In the collection of Crustacea of our museum there are many alpheid shrimps 宙hich are to be recorded as new to・the fauna of Japan． The present paper
Biology， Faculty of Liberal Arts， Nagasaki University， Nagasaki 852， Japan
272 Yasuhiko MiyA
provides additional descriptions and ecological notes on the four species of the Brevirostris‑and Edwardsii‑groups of Aipheus. The material was mainly col‑
lected from the intertidal and shallow water mudflats or sandymud flats in the Sea of Ariake, coasts of Hayasaki‑seto Straight, opening to the East China Sea and adjacent Tachibana Bay.
I am most grateful to Dr K. Baba, Kumamoto University for his critical reading and valuable suggestions. Dr L.B. Holthuis and Dr C.H.J.M. Fransen, Nationaal Natuurhistorisch Museum, Leiden, the Netherlands graciously allowed me to have acess to the museum collections, including the paralectotype of Aipheus hoplocheles Coutiere, 1897 during my visit. Particular thanks are also due to the collectors of the specimens described.
Carapace length (cl) measures from the apex of rostrum to the mid‑posterior margin of the carapace. BLNU refers to the biological reference collection in our Faculty Museum.
Species Account
Aipheus comoressus A. H. and D. M. Banner, 1976 t if v nt vi lf (xefllS)
(Fig. 1)
Aiphezes compressens A. H. & D. M. Banner, 1981: 227, fig. 3 ‑ Type localities: SW of Manila, Philippines, 188‑192 m deep; Cape St. Mary, Hong Kong, 84 m deep.
Aiphezcs comoressus: Chace, 1988: 19 ‑ No new locality.
Mtzterial. Tachibana Bay (Chijiwa Bay), Nagasaki Pref.: 2 c!cln, 1 sp.
(broken), BLNU Cr. 11010, Nagasaki‑shi, off Mogi Port, sandymud bottom, ca.
50 m deep, small‑sized trawling, 8 August 1991, coll. T. Kobayashi, dont. Y.
Dotsu.
Description. Brevirostris‑group. A large species, the specimens examined ranging from 38.8‑42.4 mm in total body length (carapace length 11.3‑13.5 mm).
Body strongly compressed, smooth and naked. Rostrum narrow, triangular, without dorsal ridge, reaching to 1/2 of lst antennular segment. Orbital hood
Four species of AxitzZ)eus from intertidal and shallow water mudflats in the Sea of Ariake, Kyushu, Japan 273
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A‑F, male, carapace length 12.6mm, BLNU Cr. 11010, from off Mogi Port, Tachibana Bay: A, male, lateral view; B, anterior part of body, dorsal view; C, major cheliped, lateral view, showing dorsal face of major chela; D, distal part of major chela, medial view, showing lateral face of major chela in normal position; E, part of minor cheliped of male, lateral view, showing dorsal face of minor chela; F, tail fan, dorsal view.
274 Yasuhiko MIyA
unarmed, not inflated; orbitorostral margin gently sinuous; orbitorostral groove absent. Pterygostomial margin rounded. Antennular peduncle elongate, 2nd segment 2.8 times as long as broad; stylocerite slender, sharply pointed, reaching to distal margin of lst segment. Basicerite bearing short, sharp lateral tooth.
Carpocerite 5.0 times as long as high, overreaching distal end of antennular peduncle by 1/2 of 3rd antennular segment. Scaphocerite narrow, 3.0 times as long as broad, weakly convex laterally; lateral spine short, equal to distal margin of lamella reaching distal margin of 2nd antennular segment.
Mouthparts normal, without any special features. Third maxilliped slender, reaching with 1/2 of distal segment beyond antennular peduncle; penultimate segment unarmed with spinules medially.
First pair of pereopods very different from other species, having major chela strongly compressed, without any sculpturing, distorted (nearly 150 degrees upside down), minor chela horizontal. Major chela 1.1‑1.3 of carapace length, 2.8 times as long as high; dactylus (movable finger) 1/3 as long as palm; apex swollen with subterminal plunger short and broad, clearly defined only by proximal angle, fitting in opposing socket (broad U‑shaped deep depression) in fixed (immovable) finger; dorsal face of palm gently concaved, lateral and medial faces smooth; dorsal and ventral faces granulated, with long simple setae.
Carpus cup‑shaped. Merus 3.5 times as long as high, dorsal distal margin armed with 2‑4 short teeth, ventromedial margin with small subterminal tooth.
Minor chela horizontal, as long as carapace; medial surface of both fingers and distal half of palm furnished with granules and long simple setae. Dactylus 2.0‑2.4 times as long as palm, not balaeniceps in males, tapering, flattened (broader than high); both fingers with cutting edges gaping, crossing at apex.
Palm swollen, 1.4‑1.7 times as long as high, subcylindrical; triangular tooth at medial side of dactylar articulation. Carpus cup‑shaped, distal margin of dor‑
somedial face projecting in sharp tooth. Merus 2.5 times as long as high, dorsodis‑
tal margin with 2 teeth, ventromedial margin having small subterminal tooth.
2nd pereopod with ratio of carpal articles: 10:5:3:2:4. 3rd pereopod having, dactylus, O.4 of propodus spatulate, broaden. Propodqs 10 times as long as high; series of long simple setae along dorsal margin, another series medially along ventral margin, which is armed with 2 short spines and paired spiniform setae distally. Carpus unarmed; merus 5.0‑6.6 times as long as high, unarmed;
Four species of ApteLns from intertidal and shallow water mudflats in the Sea of Ariake, Kyushu, Japan 275
ischium with movable spine ventrolaterally. 5th pereopod having propodus with about 20'rows of short bristles laterally; ischium unarmed.
Pleura of lst to 5th abdominal ･somites rounded; pleopods elongated, 2nd‑4th of them distinctly pointed at distolateral corners. Uropods oval, making very broad tail fan with telson. Telson elongated, 4.0‑4.5 times as long as broad at posterior margin, which is truncated; 2 pairs of dorsal spines small, anterior pair situated at O.4, and posterior pair at O.7, of telson length.
Coloration. The present material preserved in 10% .sea water formalin arrived to me. Ground color pale yellowish white, dorsal part of body entirely '
Remazles. This is the first record of the male. Most of the male mor‑
phological characters seem to be the same as the holotype female from SW of '
'
Manila Bay. '
Distribution. R6union, Andaman Sea, South China Sea, Philippines and Indonesia. This is the northernmost record of the species. 14 to 280+ meters deep.
Aipheus emphrosyne n'chartlsoni Yaldwyn, 1971 v )/ tiu ‑‑ ff v A￡Vxe
(Fig. 2)
Aiphezrs bis‑inciszes: Dotu, 1961: 136, fig. 1‑muddyflat at Kashimagawa rivermouth, Sea of Ariake.
Aipheus richartisoni Yaldwyn, 1971: 88 ‑‑‑‑‑ Type localities: Bay of Island, and many mangrove swamps and mudflats, North Island, New Zealand.
Aipheus emphrosyne richarcisoni: D.M. & A.H. Banner, 1982: 235, fig. 74.
Temperate Australian waters; Cairns, Queensland, tropical Australia.
Confer Aipheus emphrosyne emphrosyne: D,M. & A.H. Banner, 1982: 232, fig. 73.
Tropical coasts of Australia.
Confer Aipheus ezq)hrosyne emphrosyne: Chace, 1988: 27 Luson; Parawan, .
Philippines. ' ･
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276 Yasuhiko MIyA
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A‑D, F and G, ovigerous female, carapace length 8.6mm, BLNU Cr. 11020, from Shingomori rnuddy flat, Sea of ･Ariake; E, male, carapace length 8.6mm, BLNU Cr.
11022, from Byunsan Peninsula, Yellow Sea coast, Republic of Korea: A, ovigerous female, lateral view; B, anterior part of body, dorsal view; C, major chela and carpus, medial view; D, minor cheliped of female, lateral view; E, minor cheliped of male, lateral view; F, dactylus and propodus of right 3rd pereopod, ventral view; G, tail fan, dorsal view.
Four species of Aimeus from intertidal and shallow water mudflats in the Sea of Ariake, Kyushu, Japan 277
Mtzterial. Sea of Ariake: 380, 6 ovig. ¥¥, BLNU Cr. 11020, Saga Pref., KashimaLshi, Kashima River, river mouth, Shingomori muddy flat, 10 September 1950, coll. Y. Dotsu. 2c'cl, 2 ovig. ¥¥, BLNU Cr. 11021, Saga Pref., Kashima
‑shi, Kashima River, river mouth, Shingomori muddy flat, associated with goby,
"Tabirakuchi," APocmptodon Puncntzas Tomiyama 20'June 1971, coll. Y. Dotsu.
Yellow Sea: West coast of Korean Peninsula: 3 cl (", 2 ¥¥, BLNU Cr. 11022, Ch611abuk‑ do, Byunsan Peninsula, 21‑22 May 1993, coll. Chang‑Hyun Kim.
Description. Edwardsii‑group. A medium‑sized species, specimens ranging from total body length 18.2‑36.3 mm (cl 6.2‑12.1 mm). Body stout, smooth and naked. Rostrum triangular, laterally concaved, hardly reaching to 1/3 of lst antennular segment; rostral ridge low, posteriorly fading away slightly behind of eyes. Orbital hood unarmed, swollen; orbitorostral margin sinuous; orbitorostral groove broad and shallow, weakly demarcated. Antennular peduncle slender, 2nd segment 2.5‑2.7 times as long as broad; stylocerite oval, sharply pointed, reaching to distal margin of lst segment. Basicerite bearing very small lateral tooth;
carpocerite 313‑5.7 times as long as high, overreaching distal end of antennular peduncle by 1/2 of 3rd antennular segment. Scaphocerite 2.5‑2.8 times as long as broad, weakly concaved laterally; lateral spine surpassing distal margin of lamel‑
la; the latter slender distally, reachng to or over distal margin of antennular peduncle.
Third maxilliped slender, reaching with 1/3 of ultimate segment beyond antennular peduncle; penultimate segment unarmed with spinules medially.
Major chela of lst pair of pereopods O.9‑1.7 times as long as carapace;
dactylus (movable finger) halfmoon‑shaped, O.7 as long as palm; plunger well developed, deep, clearly defined by either angle; medial wall of socket forming high "parapet", which makes about 60 'degrees angle distally along to axis of chela, furnished with long setae along margin. Palm massive, 1.5 times as long as high, 2.3‑2.5 as long as broad; dactylar articulation unarmed at either side. Dorsal saddle broad, shallow; proximal and distal shoulder low, gently rounded. Lateral palmar depression deep, quadrangular, well defined, proximally overreaching
"linea impressa". Ventral shoulder heavy, rounded, making a right angle to axis of chela. Ventrolateral depression V‑shaped, deep, sharply demarcated. Medial palma( depression W‑shaped, rather deep, ventral margin of depression well demarcated by W‑shaped ridge ventrally. Ventromedial depression indistinct,
278 Yasuhiko MiyA
shallow, roughly subtriangular.
Minor chela slightly shorter than carapace, slender, subcylindrical; medial surface of both fingers and distal half of palm furnished with long stiff setae.
Dactylus as long as palm; not balaeniceps in female; balaeniceps, oval‑shaped dorsally in male; both fingers with cutting edges fitting together. Palm with triangular process at medial side of dactylar articulation, with dorsal saddle and low rounded shoulders; lateral and medial palmar depressions present Put smaller and less distinct than those of major chela; ventral shoulder much reduced.
Carpus cup‑shaped, distal margin of dorsomedial face weakly notched. Merus 2.4‑3.1 times as long as high, dorsal margin truncated, ventromedial margin
2nd pereopod with ratio of carpal articles: 10:6:3:3:4. 3rd pereopod having dactylus simple, keeled dorsally, spatulate, 3.5 times as long as broad, lateral and medial faces bearing tufts of short bristles along ventral margin. Propodus 5.1
‑5.5 times as long as broad, with 2 or 3 ventral spines; a series of long setae running along dorsolateral margin, another series along ventromedial margin.
Carpus unarmed; merus 4.3‑4.9 times as long as broad, unarmed, 1.6 times as long as propodus; ischium with 1 minute movable spine ventrolaterally. 5th pereopod having propodus with more than a dozen of rows of short bristles laterally;
ischium unarmed.
Pleura of lst to 5th abdominal somites subtriangular. Telson broad, 2.5‑2.9 times as long as broad at posterior margin, which is gently arcuate; 2 pairs of small dorsal spines,' anterior pair situated at O.4, and posterior pair at O.7, df telson length.
Body transluscent, dorsal half of carapace with 2 broad transverse bands of greenish brown. Posterior half of each abdominal somite tinged with the same or darker color. Tailfan much darker. Major and minor chelae greenish brown on dorsal (medial) surface, especially on fingers, colorless on ventral (lateral) '
surface. ' ･
'
Htzbint. During the biological studies of a small gobiid fish, ttTabirakuchi,"
APocmptodon bleekeri (Day) (=currently, A.PuncintecsTomiyama,) at the muddy flat of riVermouth of Kashimagawa River from May to September, D6tu (1961)
Four species of A,4tzheus from intertidal and shallow water mudflats in the Sea of Ariake, Kyushu, Japan 279
frequently observed the single or coupled full grown gobiid fish, some 70 mm in total length, living in the burrow of the present species (not A. bisincisus), together with single or coupled host shrimps. The burrow has an entrance and some branch galleries in the area of about 25 cm radius and 10 to 20 cm deep from the exposed surface of soft mudflat at low tide (Dotu, 1961, fig. 1).
Remazles. The specimens from the Sea of Ariake and from Byunsan Penin‑
sula, Korean Peninsula, faced to the Yellow Sea, and additional specimens from mangrove swamps of Okinawa, Ryukyus agree well with Yaldwyn's original description (1971) and the Banners' extensive studies in Australian waters (1982) . This subspecies can be separated from A. e. emphrosyne by the following two
morphological characters: ･
1. Scaphocerite. In A. e. n'charclsoni the lamella of scaphocerite is narrow or moderately broad, always shorter than lateral spine, .and lateral margin slightly concave. But in the other subspecies the lamella very broad, rounded distally, extends beyond the lateral spine, and the lateral margin straight.
2. Dactylus of 3rd‑5th pereopods. In A. e. richarclsoni the dactylus is spatulate and very broad, but in A. e. emphrosyne it is narrower spatulate.
Distribution. This is the first record of the subspecies from the temperate region in Northern Hemisphere.
Aipheus heeia Banner and Banner, 1975
)21‑7,NV if )>, iii{VJt lf (;IYi11s)
(Fig. 3)
Aiphezcs heeia Banner and Banner, 1975: 433 Type localities: Kaneohe Bay and Pearl Harbor, Oahu, Hawaii..
Mtzterial. Amakusa Islands: Amakusa‑Shimoshima I.: 18, 2 ovig.¥¥, BLNU Cr. 11011, Tomioka, Tomoezaki, boulder zone, muddy sand bottom, 22 July 1971, coll. Y. Miya. 1 8, 1 ovig.¥, 1 ¥, BLNU Cr. 11012, Tomioka, Tomo‑
ezaki, boulder zone, muddy sand bottom, LTL ‑3 cm, 3 November 1971 Ol:OO‑02:
45, coll. Y. Miya. 1 8, 1 ovig. 4, BLNU Cr. 11013, Tomioka, in front of Amakusa
280 Yasuhiko MIyA
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A‑G, I‑K, male, carapace length 11.lmm, and H, ovigerous female, carapace length 9.5mm, BLNU Cr. 11016, Tomioka, Amakusa: A, anterior part of body, lateral view;
B, same, dorsal view; C, part of left 3rd maxilliped, medial view, showing spiniform papillae (Popillae) of penultimate segment; D, major cheliped, lateral view; E,･major chela and carpus, medial view; F, minor cheliped of male, lateral view, showing dorsolateral face of minor chela; G, minor chela, carpus and distal part of merus, rrledial view; H, minor cheliped of female, lateral view; I, left 2nd pereopod; J, left 3rd pereopod; K, tail fan, dorsal view. aithrbl and arthrb2: arthrobranch1and rudimental arthrobranch 2, and opPd: hook‑like epipod of 3rd maxilliped.
Four species of Axinheus from intertidal and shallow water mudflats in the Sea of Ariake, Kyushu, Japan 281
Mar. Biol. Lab., Kyushu Univ., Zbstertz marina belt, sandy mud bottom, LTL ‑14 cm, 4 November 1971 02:10‑03:20, coll. Y. Miya. 38di, 2 ovig. ¥¥, 10 ¥¥
(juvs.), BLNU Cr. 11014, Tomioka, Tomoezaki, boulder zone, muddy sand bot‑
tom, 10 August 1972 14:15‑15:45, coll. Y. Miya. 1 ¥, BLNU Cr. 11015, Tomioka, Tomoezaki, boulder zone, muddy sand bottom, 24 October 1972 Ol:45‑03:15, coll.
Y. Miya. 3 8&, 1 ovig. ¥, BLNU Cr. 11016, Tomioka, Tomoezaki, boulder zone, muddy sand bottom, 24 June 1990, coll. Y. Miya & Rianta Pratiwi. Amakusa
‑Matsushima I. 2 8&, 1 ovig. ¥, BLNU Cr. 11017, Aitsu, muddy shore, LTL., at the back of Aitsu Mar. Biol. Lab., Kumamoto Univ., 25 June 1990, coll. Y. Miya
& Rianta Pratiwi.
Description. Edwardsii‑group. A middle‑sized species; specimens of 8.3‑33.0 mm long (cl 3.0‑11.8 mm). Boby smooth, pubescent in smaller specimens, naked in larger ones. Rostrum narrow, less than twice as long as broad, triangular, overreaching 2/3 of lst antennular segment; rostral ridge absent or indistinct, posteriorly fading away slightly behind of eyes. Orbital hood unarmed, not swollen; orbitorostral margin straight or faintly sinuous; orbital groove broad and shallow, not sharply demarcated. Antennular peduncle robust, 2nd segment less than twice as long as broad; stylocerite slender, sharply pointed, reaching to distal margin of lst segment. Basicerite with small spiniform tooth; carpocerite more than 3.0 times as long as high, overreaching distal end of antennular peduncle by half of 3rd antennular segment. Scaphocerite 2.3‑2.7 times as long as broad, weakly concaved laterally; lateral spine reaching to distal end of carpo‑
cerite; lamella narrow distally, reaching forward as far as distal margin of antennular peduncle.
Third maxilliped much slender, reaching with 1/2 of distal segment'beyond antennular peduncle; medial surface of penultimate segment bearing tufts of spiniform papillae densely in larger specimens, but in the smallers they are few and longer, together with fine simple setae sparsely.
' Major chela of lst pair of pereopods 1.3‑1.4 times as long as carapace in
males and O.9‑1.2 times in females; major chela 2.4‑3.1 times as long as high;
dactylus (movable finger) O.5‑O.8 as long palm, bearing deep plunger clearly defined by proximal and distal angle in larger specimens of either sex, but low and well defined only by proximal angle in smaller specimens; medial wall of
282 Yasuhiko MiyA
socket forming high "parapet", which makes more than 60 degrees angle distally along to axis of chela, furnished with long setae along margin. Palm of either sex massive, 1.6‑1.7 times as long as high, 2.5‑3.0 times as long as broad. Dorsal saddle well defined, U‑shaped; proximal shoulder blunt, overhanging saddle slightly; distal shoulder also high, rounded. Lateral palmar depression quadran‑
gular, well defined, reaching to "linea impressa". Ventral shoulder heavy, rounded, making a right angle to axis of chela. Ventrolateral depression V‑
shaped, deep, sharply demarcated. Medial palmar depression roughly W‑shaped bordered by W‑shaped ridge, apex disappearing near middle of palm.
Ventromedial depression not well defined, shallow, roughly subtriangular. Along ventromedial margin indistinct narrow groove running from proximal articula‑
tion near ventral shoulder. Merus 3.0 times as long as high, dorsal margin truncated distally, ventromedial margin bearing small distal tooth.
Minor chela as long as carapace, slender, subcylindrical; medial surface of both fingers and distal half of palm furnished sparsely with long setae. Dactylus slightly shorter than palm in either sex, balaeniceps in male, slender (not balaeniceps) in female, both fingers closing. Palm with triangular process at medial side of dactylar articulation, with distinct dorsal saddle and rounded shoulders; lateral and medial palmar depressions present but smaller and less distinct than those of major chela; ventral shoulder slightly angled. Carpus cup
‑shaped, distal margin of dorsomedial face notched. Merus 2.9‑3.8 times as long as high, dorsal margin truncated, ventromedial margin ending in small tooth
distally.
2nd pereopod with ratio of carpal articles: 10:6:2:2:4. 3rd pereopod having dactylus simple, styliform, half of propodus. Propodus 5,6‑6.0 times as long as broad, bearing paired distal spines and 7 or 8 spines along ventral margin. Carpus unarmed; merus 4.2 times as long as broad, unarmed, 1.5 times an Iong as propodus; ischium with 1 movable spine ventrolaterally. 5th pereopod having propodus with 4‑5 ventral spines and about a dozen of rows of short bristles laterally; ischium unarmed.
Pleura of lst to 4th abdominal somites rounded, but pleuron of 5th subtrian‑
gular. Telson broad, 2.8‑3.3 times as long as broad at posterior margin, which is gently rounded: 2 pairs of dorsal spines small, anterior pair situated at O.4‑O.5, the posterior at O.7, of telson length.
Four species of AimeLns from intertidal and shallow water mudflats in the Sea of Ariake, Kyushu, Japan 283
'
Coloration. Body translucent, with two distinct transverse bands of reddish brown or deep blue on carapace and one on posterior half of each abdominal somite, major and minor chelipeds reddish brown, posterior half of uropods deep blue.
' Htzbiim. The specimens from the muddy shore of Aitsu, Amakusa‑Matsu‑
shima Island were collected by blind sweepings of small hand‑net from many small pools after digging up edible Japanese littlenecks, "Asari" in Japanese, Ruditmpes PhilipPinamm (A. Adams & Reeve). Many specimens of Athanas
7'aponicus Kubo, 1936, Aipheus lobidens De Haan, 1849, Aipheus Pacifcus Dana, 1852, Aipheus brevicristatus De Haan, 1844, and UZ)Qgagia ([lpQgebia) ma7'or (De Haan, 1841) were collected together by the same hand‑net samplings. A. brevi‑
cristatus and [L ( (L) mew'or are common burrow‑dwellers in muddy or sandy mud flats in Japan.
So far as collected from various localities in southern Japan by myself, A.
heeia lives under cover, in anything available, from open rocky shore to sandy mud flats of well‑protected coves.
Renzarks. it is not unlikely that A. heeia may have been erroneously identified with A. Iobidens or A. edwartlsii based on their morphological affinities or with Aipheus leviusculus Dana, 1852 on their similar coloration.
Distribution. The species, previously known only from the type localities in Oahu, Hawaiis seems to be rather common in southern Japan.
Alpheus hoplocheles Coutiere, 1897 7Y Y b ti f y )j￡ V= tf (XffiffR) (Fig. 4)
Aipheus hoplocheles Coutiere, 1897: 197 Type localities: Japan; Amoy, China;
Malay Archipelago.
Cvangon hoplocheles: Yu, 1935: 60 Kiuchow Bay.
Aipheus hoplocheles: Liu, 1955: 32, pl. 11, figs. 1‑5 Po Hai coast and Yellow Sea coast, northern China.
284 Yasuhiko MiyA
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A‑I, ovigerous female, carapace length 15.8mm, BLNU Cr. IIO02, muddy flat, Tara‑
machi, Saga Pref., Sea of Ariake: A, anterior part of body, lateral view; B, same, dorsal view; C, major cheliped, lateral view; D, same, medial view; E, minor cheliped of female, lateral view, showing dorsolateral face of minor chela; F, same, medial view, G, right 2nd pereopod; H, right 3rd pereopod; I, tail fan, dorsal view.
Four species of A,4nheus from intertidal and shallow water mudflats in the Sea of Ariake, Kyushu, Japan 285
Aipheus hoplocheles:Yamaguchi & Baba, 1993:229, fig. 49.
Notes on 2 paralectotypes in von Siebold ‑ Bttrger collection.
Mdterial. Sea of Ariake: 1 ovig. ¥, BLNU Cr. 11002, Saga Pref., Tara‑chou, mudflat, intertidal, 6 May 1953, coll. S. Miyake.
Description. Edwardsii‑group. Only an ovigerous female specimen of 43 mm long (cl 10.3 mm). Body stout, smooth and naked. Rostrum narrow, triangular, overreaching 2/3'of lst antennular segment; rostral ridge indistinct, posteriorly fading away slightly behind of eyes. Orbital hood unarmed, moderately swollen;
orbitorostral margin gently sinuous; orbital groove broad and shallow, weakly demarcated. Antennular peduncle robust, 2nd segment 2.2 times as long as broad;
stylocerite slender, sharply pointed, reachng to distal margin of lst segment.
Basicerite bearing strong lateral tooth; carpocerite 2.6 times as long as broad, overreaching distal end of antennular peduncle. Scaphocerite 2.5 times as long as broad, weakly concaved laterally; distolateral spine and lamella reaching for‑
ward as far as distal margin of antennular peduncle; lamella rather broad
distally.
Third maxilliped slender, reaching with 1/2 of distal segment beyond anten‑
nular peduncle; penultimate segment unarmed with spinules medially.
Major chela of lst pair of pereopods 1.8 times as long as carapace; dactylus (movable finger) O.75 as long as palm, bearing moderate plunger, clearly defined only by proximal angle, fitting in opposing socket in fixed (immovable) finger;
medial wall of socket forming high "parapet", which makes a right angle distally along to axis of chela, furnished with long setae along margin. Palm massive, 1.2 times as long as high, twice as long as broad; dactylar articulation flanked by a pair of strong teeth. Dorsal saddle well defined; proximal shoulder blunt, over‑
hanging saddle slightly; distal shoulder gradually rounded. Lateral palmar depression quadrangular, well defined, reaching to "linea impressa". Ventral shoulder heavy, rounded, slightly projecting. Ventrolateral depression V‑shaped, deep, sharply demarcated. Medial palmar depression triangular, apex disappear‑
ing in proximal fourth of palm. Ventromedial depression indistinct shallow, roughly showing equilateral triangle bordered proximally by low perpendicular ridge that bears a few setae, Along ventromedial margin ill‑ defined, narrow
286 Yasuhiko MiyA
groove running from proximal articulation to ventral shoulder. Merus twice as long as high, dorsal margin dull‑pointed distally, ventromedial margin bearing strong distal tooth.
Minor chela O.8 times as long as carapace, slender, subcylindrical; medial surface of both fingers and distal half of palm furnished with long stiff setae.
Dactylus 1.2 times as long as palm, not balaeniceps (in female, but balaeniceps in male) ; both fingers with cutting edges fitting together. Palm with strong teeth at both sides of dactylar articulation, with dorsal saddle and low rounded shoulders;
lateral and medial palmar depressions present but smaller and weaker than those of major chela; ventral shoulder much reduced. Carpus cup‑shaped, distal margin of dorsomedial face projecting in sharp tooth. Merus 2.5 times as long as high, dorsa'1 margin truncated, ventromedial margin ending in sharp tooth distally.
2nd pereopod with ratio of carpal articles: 10:6:3:3:5. 3rd pereopod having dactylus simple, flattened ventrally but narrow, lateral face bearing tufts of short bristles along ventrolateral margin. Propodus 4.8 times as long as broad, bearing 12 spines and a series of long setae medially along ventral margin. Carpus unarmed; merus 4 times as long as broad, unarmed, 1.3 times as long as propodus;
ischium with 1 movable spine ventrolaterally. 5th pereopod having propodus with more than a dozen of rows of short bristles laterally; ischium unarmed.
Pleura of lst to 4th abdominal somites rounded, but pleuron of 5th subtrian‑
gUlar, sharply pointed at posteroventral angle. Telson broad, 2.5 times as long as broad at posterior margin, which is gently arcuate; 2 pairs of dorsal spines strong, anterior pair situated at O.4, and posterior pair at O.7, of telson length.
Colovation. "Boby deep green, the color pattern in similar to that of Aipheus
7'oponicus Miers, 1879 [==having two transverse bands of deep green on carapace and one on posterior section of each abdominal somite], major and minor chelipeds green dorsally [medially], posterior half of uropods deep blue" (Liu, 1955).
Htzbitat. "Their behavior is also similar to A. 7'mponicus, many shrimps live in sandy mud or under gravels near low tide level. Their local distribution is rather narrow. Very small fisheries production, and edible. The breeding season is mainly in Autumn" (Liu, 1955).
Four species of A4!theus from intertidal and shallow water mudflats in the Sea of Ariake, Kyushu, Japan 287
Remarks. My brief note on the Paralectotype, RNHL Reg. No. 5543, of Aipheus hoplocheles Coutiere is as follows: A dry male specimen of 33.7 mm (cl 10.5 mm) in good condition. Rostrum strong, high, its apex blunt, without rostral ridge, rounded dorsally, well separated from orbital hoods laterally by deep and broad grooves. Stylocerite sharply pointed. Ist pereopods absent; 3rd, 4th, left 5th pereopods absent. Right 3rd or 4th pereopod detached; dactylus absent. Right 5th pereopod lacking dactylus.
Another paralectotype (RMNH 2491) which I overlooked was recently commented and photographed by Yamaguchi & Baba (1993). The specimen in alcohol also lacks the first pair of pereopods.
The single specimen has no special features and agrees with Coutiere's 'original description (1897) and also the description provided by Liu (1955). This
is the second record of the species from Japan.
Distribution. Previously known from Japan, through coasts of China conti‑
nental, to Malay Archipelago.
Alpheid shrimps collected from soft bottom in the Sea of Ariake and adjacent waters (including above 4 species)
Aiphezcs brevicn'status De Haan, 1849 A. compressus A. H. & D. M. Banner, 1981 A. digimlis De Haan, 1844
A. edwartlgii (Audouin, 1827)
A. emphrosyne richartisoni Yaldwyn, 1971 A. heeia Banner & Banner, 1975
A. hoplocheles Coutiere, 1897 A. 7'aponicus Miers, 1879
Aiphezes leviusculus Dana, 1852 A. Iobidens De Haan, 1844 A. malaban'czas (Fabricius, 1775)"
A. Pac417czas Dana, 1852 A. strenuus Dana, 1852 Athanas jmponiczts Kubo, 1936 Athanopsis dentipes Miya, 1980 .Azatomate dolichQgnatha De Man, 1888
Stilmonezts gracilipes Miya, 1972
": Aipheus dolichodoclylus Ortmann, 1890 (type locality: Tokyo Bay) is a junior synonum of A.
malabaricus. The species seems to be common in the Sea of Ariake. I have received many specimens from some localities for identification through our students, working on the biology of a goby,
"Tabirakuchi," APocmptodon Pzanctatzas Tomiyama.
Literature Cited
Banner, A. H. & Banner, D. M., 1975. Contributions to the knowledge of the alpheid shrimp of the Pacific Ocean. Part XVII. Additional notes on the Hawaiian alpheids: New species, subspecies, and some nomenclatorial changes. Pacific Science, 28(4): 423‑437.
288 Yasuhiko MiyA
Banner, A. H. & [Banner,] D. M., 1981. Decapod Crustacea: Alpheidae. In: R6sultats des campagnes MUSORSTOM. I. Philippines (18‑28 Mars 1976). Volume 1.
Collection M6moires ORSTOM no 91:217‑235.
'
Banner, D. M. & [Banner,] A. H. 1982. The alpheid shrimp of Australia. Part III. The remaining alpheids, principally the genus Aipheus, and the family Ogyrididae.
Records of the Australian Museum, 34(1): 1‑357.
Chace, F. A., Jr., 1988. The caridean shrimps (Crustacea: Decapoda) of the Albatross Philippine Expedition, 1907‑1910, Part 5: Family Alpheidae. Smithsonian Contri‑
butions to Zoology, no 466: vi+99 pp.
Coutiere, H., 1897. Note sur quelques especes du genre Aiphezts du Musee de Leyde.
Notes from the Leyden Museum, 19:195‑207.
Dotu [Dotsu] , Y., 1961.The bionomics and life history of the gobioid fish,APocmptodon bleeleen' (Day).
Bulletin of the Faculty of Fisheries, Nagasaki University, no 10: 133 ‑ 139, pl. 28.
(In Japanese with･English summary)
Liu, J. Y., 1955. Economic shrimps and prawns of northern China. viii+73 pp., 24 pls.
Marine Biological Laboratory, Academy of Sciences, (ed.), Scientific Publishing House, Beijing. (In Chinese)
Yaldwyn, J. G., 1971. Preliminary descriptions of a new genus and twelve new species
of natant decapod Crustacea from New Zealand. Records of the Dominion Museum, 7(10): 85‑94.
Yamaguchi, T. & Baba, K., 1993. Crustacean specimens collected in Japan by ph.F. von siebold and H. BUrger and held by the Nationaal Natuurhistorische Museum in Leiden and other museums. pp. 145‑539, figs. 1‑200D, pls. 3‑14. Yamaguchi, T.
(ed.), Ph. F. von Siebold and Natural History of Japan. Crustacea. viii+732 pp., 24 plates. The Carcinological Society of Japan, Tokyo. (In English and Japanese) Yu, S. C., 1935. Sur les crevettes chinoises appartenant au genre Cvangon (Alpheus) avec descriptions de nouvelles especes. The Chinese Journal of Zoology, 1:55‑67.
