Taxonomic Note of the Genus Cephennodes (Coleoptera: Staphylinidae: Scydmaeninae) from Japan and Taiwan 利用統計を見る

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(Coleoptera: Staphylinidae: Scydmaeninae) from

Japan and Taiwan

journal or

publication title

福井大学教育・人文社会系部門紀要

volume

3 page range

109-129

year

2019-01-17

URL

http://hdl.handle.net/10098/10547

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Abstract. Seven new species of the genus Cephennodes are described from Japan and Taiwan.

Cephennodes (Cephennodes) japonicus (Sharp, 1886) and C. (C.) vafer Kurbatov, 1995 are recorded

for the ﬁrst time from the Ryukyus. As a result of this study, the Japanese number of Cephennodes becomes nineteen. C. (C.) maya Hoshina, sp. nov. is a ﬁrst Taiwanese species of Cephennodes.

Introduction

The genus Cephennodes Reitter, 1883 belongs to the tribe Cephenniini of the subfamily Scydmaeninae of the family Staphylinidae (Csiki, 1919; Newton & Franz, 1998; Grebennikov & Newton, 2009). In Japan, 13 species have been known to occur (Sharp, 1886; Kurbatov, 1995; O’Keefe & Li, 1998; Jałoszyński, 2003; Jałoszyński & Hoshina, 2003; Hoshina & Kishimoto, 2004; Jałoszyński, 2005, 2007; Hoshina, 2012, 2016, 2017a, 2017b).

Recently, I found many specimens of Cephennodes collected from Japan and Taiwan in my collection. My careful examination showed that those specimens include seven new members of this genus. In this paper, I describe seven new species under the names, Cephennodes (Cephennodes)

miharu Hoshina, sp. nov., C. (C.) tamaki Hoshina, sp. nov., C. (C.) kotori Hoshina, sp. nov., C. (C.) maya Hoshina, sp. nov., C. (Fusionodes) nemu Hoshina, sp. nov., C. (F.) koko Hoshina, sp. nov., and C. (F.) sakura Hoshina, sp. nov.

Materials and methods

Most of specimens used in this study were collected by sifting litters. Materials examined were dissected, and the male genitalia was put in 5 % KOH for about 12 hours at room temperature. Drawings of male genitalia were prepared using an imaging equipment of biological microscope.

The holotype designated in this study is deposited in the collection of the Museum of Nature and ＊_{Faculty of Education, Humanities and Social Sciences Division of Teacher Education, University of Fukui}

Staphylinidae: Scydmaeninae) from Japan and Taiwan

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Human Activities, Hyôgo (MNHAH). Paratypes are preserved in Fukui University (FU).

Before going further, I wish to express my sincere thanks appreciation to Dr. Munetoshi Maruyama, Mr. Takasuke Miyata, Mr. Shigeru Onoda, Mr. Hiroshi Sugaya, and Mr. Teruhisa Ueno for their kind oﬀering of the valuable specimens.

Cephennodes (Cephennodes) miharu Hoshina, sp. nov. [Japanese name: Miharu-munabiro-kokemushi]

(Figs. 1–3)

Diagnosis. Dorsum dark reddish brown. Body 1.35–1.53 mm in length. Elytra widest at about basal 2/5 of lateral margins. Hind wings fully development or absent. Median lobe of aedeagus slender in general.

Measurement of holotype: Body 1.48 mm in length; head 0.38 mm in width; pronotum 0.48 mm in length, 0.65 mm in width; elytra 0.76 mm in length, 0.70 mm in width.

Male and female. Coloration. Dorsum of body shining, almost concolorous and dark reddish

brown; maxillary palpus light brown; antennae brownish; antennomeres 1–8 brown; antennomeres 9–11 a little lighter than others; meso- and metaventrites dark reddish brown except for a black median carina of mesoventrite; abdominal ventrites brown; legs brown in general, except for light brown all tarsi and a little darkish brown metacoxae; pubescence of dorsum light yellowish brown.

Body 1.35–1.53 mm in length, about 2.1 times as long as wide, densely and thinly pubescent on dorsum.

Head not showing sexual dimorphism, pubescent as pronotum and elytra or a little more sparsely than pronotum and elytra, and about 0.58 times as wide as pronotum; surface of head smooth; setal socket punctures very minute; vertex very weakly convex; eyes round, about 1.6 times as long as wide in dorsal view; antennae normal shape in the genus Cephennodes; antennomeres 1–2, 7, and 11 each longer than wide; antennomeres 9–10 wider than long; other antennomeres almost as wide as long; antennomere 11 slender-oval, about 1.5 times as long as wide.

Pronotum bearing dense and moderate sized setal socket punctures, densely pubescent, almost smooth, wholly convex but relatively flat near both basal corners, about 1.3 times as wide as long, and widest at base or about basal 2/5 of lateral margins; length of pronotum about 0.65 times as long as that of elytra; width of pronotum almost as long as or a litter narrower than that of elytra; posterior margin feebly curved inwardly near both basal corners; basal two foveae strongly impressed and its interval between foveae about 0.78 times as long as the maximal width of pronotum.

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smooth, bearing dense minute setal socket punctures, and densely pubescent as pronotum; humeral oblique carinae distinct, about 0.38 times as long as elytra.

Hind wings fully development or short.

Legs without sexual dimorphism, and normal shape in the genus Cephennodes.

Metaventrite pubescent, smooth, convex, and almost impunctate; abdominal ventrites densely pubescent and weakly microreticulate.

Male. Aedeagus slender in general (Figs. 1–3); median lobe feebly curved at left margins in

dorsal view (Fig. 2) and sharply projected apically at dorsal sides in lateral view (Fig. 3); both parameres a little asymmetric in ventral and dorsal views (Figs. 1 and 2) and feebly curved in lateral view (Fig. 3); each paramere bearing a few ﬁne apical setae.

Distribution. Japan: Ryukyus: Amami Islands (Amami-Ôshima Is. and Tokunoshima Is.) and Okinawa Islands (Okinawa Is.).

Type series. Holotype: Mt. Yuwandake, Amami-Ôshima Is., Ryukyus, 26-27. iii. 2002, H. Sugaya leg. (MNHAH). Paratypes: 1♂ 2♀, 4 exs., same data as holotype (FU). 3 exs., Mt. Yuidake, Amami-Ôshima Is., Ryukyus, 26-27. iii. 2002, H. Sugaya leg. (FU). 1♀, Santarô-tôge, Amami-Ôshima Is., Ryukyus, 25. iii. 2006, H. Hoshina leg. (FU). 1♂ 2♀, Mt. Amagidake, Tokunoshima Is., Ryukyus, 19. iii. 2010, H. Hoshina leg. (FU). 2♀, Tete, Tokunoshima Is., Ryukyus, 19. iii. 2010, H. Hoshina leg. (FU). 2♂, Ie-rindô, Okinawa Is., Ryukyus, 20-22. iii. 2002, H. Sugaya leg. (FU).

Notes. The present new species is a ﬁrst species of the genus Cephennodes from Amami Islands.

Cephennodes (Cephennodes) miharu Hoshina, sp. nov. is similar to Cephennodes (Cephennodes) japonicus (Sharp, 1886) in appearance, but can be separated from it by having median lobe of

aedeagus relatively slender (Figs. 1 and 2) and relatively feebly curved at left margins in dorsal view (Fig. 2). In contrast, C. (C.) japonicus has the median lobe relatively robust (Figs. 4 and 5) and relatively strongly curved at left margins in dorsal view (Fig. 5).

Etymology. This speciﬁc name is derived from a Japanese word miharu, which means a period from January to March of the lunar calendar.

Cephennodes (Cephennodes) japonicus (Sharp, 1886) [Japanese name: Yamato-munabiro-kokemushi]

(Figs. 4–6)

Cephennium japonicum Sharp, 1886: 50, Franz, 1976: 58.

Cephennodes japonicus: Jakobson, 1910: 591; Csiki, 1919: 17; Kurbatov, 1995: 947; O’Keefe & Li,

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Cephennodes (Cephennodes) japonicus: Jałoszyński, 2007: 89; Schülke & Smetana, 2015: 863. Distribution. Japan: Shikoku, Kyushu, and Ryukyus (Ôsumi Islands: Yakushima Is.) and Korea. Specimens examined. 3♂2♀, 3 exs., Mt. Motchomudake, Yakushima Is., Ryukyus, 18. vii. 2001, H. Hoshina leg. (FU). 2♀, Yakushima Is., Ryukyus, 13. vii. 1995, S. Onoda leg. (FU). 1♂, Oshioka, Susaki City, Kôchi Pref., Shikoku, 12. vi. 2013, T. Miyata & T. Miyata leg. (FU).

Notes. Cephennodes (Cephennodes) japonicus (Sharp, 1886) is recorded for the ﬁrst time from Shikoku and Ryukyus.

Cephennodes (Cephennodes) tamaki Hoshina, sp. nov. [Japanese name: Tamaki-munabiro-kokemushi]

(Figs. 7–9)

Diagnosis. The present new species is the smallest species among Japanese Cephennodes. Dorsum brown. Body 0.95–1.05 mm in length. Elytra widest at about basal 1/3 of lateral margins. Hind wings fully development or short. Median lobe of aedeagus oval in general.

Male and female. Coloration. Dorsum of body shining, almost concolorous and brown; maxillary

palpus light brown; antennae brownish; antennomeres 1–8 brown; antennomeres 9–11 a little lighter than others; meso- and metaventrites brown except for a black median carina of mesoventrite; abdominal ventrites brown; legs brown in general, except for light brown all tarsi and a little darkish brown metacoxae; pubescence of dorsum light yellowish brown.

Head not showing sexual dimorphism, pubescent a little more sparsely than pronotum and elytra, and about 0.53 times as wide as pronotum; surface of head smooth; setal socket punctures very minute; vertex very weakly convex; eyes round, about 2.5 times as long as wide in dorsal view; antennae normal shape in the genus Cephennodes; antennomeres 1–2, 7, and 11 each longer than wide; antennomeres 8–10 wider than long; other antennomeres almost as wide as long; antennomere 11 slender-oval, about 1.4 times as long as wide.

Pronotum bearing dense minute setal socket punctures, densely pubescent, almost smooth, wholly convex but relatively flat near both basal corners, about 1.3 times as wide as long, and widest at base; length of pronotum about 0.59 times as long as that of elytra; width of pronotum almost as

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long as that of elytra; posterior margin feebly curved inwardly near both basal corners; basal two foveae strongly impressed and its interval between foveae about 0.83 times as long as the maximal width of pronotum.

Elytra about 1.3 times as long as wide, widest at about basal 1/3 of lateral margins, almost smooth, and bearing dense minute setal socket punctures, and densely pubescent as pronotum; humeral oblique carinae distinct, about 0.34 times as long as elytra.

Male. Aedeagus oval in general (Figs. 7–9); left sclerite of median lobe strongly sinuate and

pointed apically in ventral view (Fig. 7); both parameres asymmetric in ventral and dorsal views (Figs. 7 and 8), and feebly curved in lateral view (Fig. 9); each paramere bearing a few ﬁne apical setae.

Distribution. Japan: Ryukyus: Ôsumi Islands (Kuroshima Is. and Yakushima Is.) and Okinawa Islands (Okinawa Is.).

Type series. Holotype: ♂, Nakazato-rindô, Kuroshima Is., Ryukyus, 8. vi. 1994, S. Onoda leg. (MNHAH). Paratypes, 1♂2♀, 4 exs., same data as holotype (FU). 1♀, Koyôji-rindô, Yakushima Is., Ryukyus, 16. x. 2000, M. Maruyama & Y. Kôyama leg. (FU). 1♂4♀, Seibu- rindô, Yakushima Is., Ryukyus, 17. x. 2000, M. Maruyama & Y. Kôyama leg. (FU). 1♀, Koseda-rindô, Yakushima Is., Ryukyus, 18. vii. 2001, H. Hoshina leg. (FU); 1♂, Mt. Yaedake, Nago City, Okinawa Is., Ryukyus, 29. iii. 2007, H. Hoshina leg. (FU).

Notes. The present new species is a ﬁrst species of the genus Cephennodes from Ôsumi Islands together with Cephennodes (Cephennodes) japonicus (Sharp, 1886), and the smallest species among Japanese Cephennodes. Cephennodes (Cephennodes) tamaki Hoshina, sp. nov. is similar to

Cephennodes (Cephennodes) yonaguniensis Hoshina, 2012 in appearance, but can be separated from

it by having the small body (0.95–1.05 mm in length), the brown dorsum, and left sclerite of median lobe strongly sinuate and pointed apically in ventral view (Fig. 7). In contrast, C. (C.) yonaguniensis has the relatively large body (1.20-1.30 mm in length), the dark reddish brown dorsum, and left scler-ite of median lobe almost straight and round apically in ventral view (Fig. 10).

Etymology. This speciﬁc name is derived from a Japanese word tamaki, which means an ancient circular adornment.

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Cephennodes (Cephennodes) vafer Kurbatov, 1995 [Japanese name: Chishima-munabiro-kokemushi]

(Figs. 11–12)

Cephennodes vafer Kurbatov, 1995: 946; O’Keefe & Li, 1998: 158; Jałoszyński & Hoshina, 2003: 195; Vít & Besuchet, 2004: 206;

Cephennodes (Cephennodes) vafer: Jałoszyński, 2007: 90; Schülke & Smetana, 2015: 864.

Cephennodes (Cephennodes) yonaguniensis, Hoshina, 2012: 426; Hoshina, 2013: 288

(misidentiﬁcation).

Distribution. Japan: Hokkaido (Kunashiri Is.), Honshu, Shikoku, Kyushu, Ryukyus (Tokara Islands: Nakanoshima Is., Amami Islands: Amami-Ôshima Is., Okinawa Islands: Kumejima Is.).

Specimens examined. 4♂3♀, 9 exs., Mt. Yuwandake, Amami-Ôshima Is., Ryukyus, 26-27. iii. 2002, H. Sugaya leg. (FU). 4 exs., Mt. Yuidake, Amami-Ôshima Is., Ryukyus, 26-27. iii. 2002, H. Sugaya leg. (FU). 1♂, 1 ex., Mt. Otake, Nakanoshima Is., Ryukyus, 20. x. 2000, M. Maruyama leg. (FU). 1♂, 1 ex., Mt. Uegusukudake, Kumejima Is., Ryukyus, 19. iii. 2013, H. Hoshina leg. (FU) (identiﬁed as Cephennodes (Cephennodes) yonaguniensis Hoshina, 2012 by Hoshina (2013)). 1♂1 ♀, 1 ex., Âradake, Kumejima Is., Ryukyus, 19. iii. 2013, H. Hoshina leg. (FU) (identiﬁed as C. (C.)

yonaguniensis by Hoshina (2013)).

Notes. Cephennodes (Cephennodes) vafer Kurbatov, 1995 is recorded for the ﬁrst time from the Ryukyus. Hoshina (2013) recorded Cephennodes (Cephennodes) yonaguniensis Hoshina, 2012 from Kumejima Is., Okinawa Islands. However, I reexamined those specimens of Cephennodes collected in Kumejima Is. in this study and concluded that they are C. (C.) vafer. At the present time, C. (C.)

yonaguniensis is a species endemic to Yonaguni Is., Yaeyama Islands.

Male aedeagus of C. (C.) vafer show intraspecific variation. Right parameres of Ryukyuan specimens are relatively a little longer than those of specimens in Hokkaido, Honshu, Shikoku, and Kyushu, in dorsal view (Figs. 11 and 12).

Cephennodes (Cephennodes) kotori Hoshina, sp. nov. [Japanese name: Kotori-munabiro-kokemushi]

(Figs. 13–15)

Diagnosis. Dorsum brown or dark reddish brown. Body 1.34–1.50 mm in length. Elytra widest at about basal 1/3 of lateral margins. Hind wings fully development or short. Median lobe of aedeagus

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slender in general.

Male and female. Coloration. Dorsum of body shining, brown or dark reddish brown; head

and pronotum often a little darker than elytra; maxillary palpus light brown; antennae brownish; antennomeres 1–8 brown; antennomeres 9–11 a little lighter than others; meso- and metaventrites dark reddish brown except for a black median carina of mesoventrite; abdominal ventrites brown; legs brown in general, except for light brown all tarsi and a little darkish brown metacoxae; pubescence of dorsum light yellowish brown.

Head not showing sexual dimorphism, pubescent a little more sparsely than pronotum and elytra, and about 0.51 times as wide as pronotum; surface of head smooth; setal socket punctures very minute; vertex very weakly convex; eyes round, about 1.8 times as long as wide in dorsal view; antennae normal shape in the genus Cephennodes; antennomeres 1–2 and 11 each longer than wide; antennomeres 8–10 wider than long; other antennomeres almost as wide as long; antennomere 11 slender-oval, about 1.5 times as long as wide.

Pronotum bearing dense setal socket punctures, densely pubescent, almost smooth, wholly convex but relatively flat near both basal corners, about 1.4 times as wide as long, and widest at base or about basal 2/5 of lateral margins; setal socket punctures often larger than those of elytra; length of pronotum about 0.58 times as long as that of elytra; width of pronotum about 0.93 times as long as that of elytra; posterior margin feebly curved inwardly near both basal corners; basal two foveae strongly impressed and its interval between foveae about 0.72 times as long as the maximal width of pronotum.

Elytra about 1.1 times as long as wide, widest at about basal 1/3 of lateral margins, almost smooth, bearing dense minute setal socket punctures, and densely pubescent as pronotum; humeral oblique carinae distinct, about 0.29 times as long as elytra.

Male. Aedeagus slender in general (Figs. 13–15); median lobe distinctly curved at left margins in

dorsal view (Fig. 14) and apically projected at dorsal sides in lateral view (Fig. 15); both parameres a little asymmetric in ventral and dorsal views (Figs. 13 and 14) and moderately curved in lateral view

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(Fig. 15); each paramere bearing a few ﬁne apical setae.

Distribution. Japan: Kyushu (Fukuoka Pref. and Shimo-Koshiki Is.).

Type series. Holotype: ♂, Mt. Fukuchi, Fukuoka Pref., Kyushu, 30. x. 1995, H. Hoshina leg. (MNHAH). Paratypes: 2♂1♀, 1 ex., 13. xi. 1995, same data as holotype except for the data (FU). 1 ♂, Mt. Otake, Shimo-Koshiki Is., Kagoshima Pref., Kyushu, 24. v. 1994, T. Ueno leg. (FU).

Notes. Cephennodes (Cephennodes) kotori Hoshina, sp. nov. is similar to Cephennodes (Cephennodes) japonicus (Sharp, 1886) in appearance, but can be separated from it by having the median lobe of aedeagus relatively sharply projected apically at dorsal sides in lateral view (Fig. 15). In contrast, C. (C.) japonicus has the median lobe relatively shortly projected apically at dorsal sides in lateral view (Fig. 6). Moreover, C. (C.) kotori sp. nov. also resembles C. (C.) miharu sp. nov. in shape, but can be distinguished from it by having the median lobe of aedeagus strongly curved at left margins in dorsal view (Fig. 14) and relatively robust in lateral view (Fig. 15). In contrast, C. (C.) miharu sp. nov. has the median lobe feebly curved at left margins in dorsal view (Fig. 2) and relatively slender in lateral view (Fig. 3).

Etymology. This speciﬁc name is derived from a Japanese word kotori, which means a small bird.

Cephennodes (Cephennodes) maya Hoshina, sp. nov. [Japanese name: Maya-munabiro-kokemushi]

(Figs. 16–18)

Diagnosis. Dorsum dark reddish brown. Body 1.45–1.61 mm in length. Elytra widest at about basal 1/3 of lateral margins. Hind wings fully development or absent. Median lobe of aedeagus long-oval in general.

Male and female. Coloration. Dorsum of body shining, almost concolorous, dark reddish brown;

maxillary palpus light brown; antennae brownish; meso- and metaventrites dark reddish brown except for a black median carina of mesoventrite; abdominal ventrites brown; legs brown in general, except for light brown all tarsi and a little darkish brown metacoxae; pubescence of dorsum light yellowish brown.

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wide as pronotum; surface of head smooth; setal socket punctures dense and moderate sized; vertex very weakly convex; eyes round, about 1.7 times as long as wide in dorsal view; antennae normal shape in the genus Cephennodes; antennomeres 1–2, 7, and 11 each longer than wide; antennomeres 8–10 wider than long; other antennomeres almost as wide as long; antennomere 11 slender-oval, about 1.8 times as long as wide.

Pronotum bearing dense setal socket punctures, densely pubescent, almost smooth, wholly convex but relatively flat near both basal corners, about 1.5 times as wide as long, and widest at base or about basal 2/5 of lateral margins; setal socket punctures as those of head; length of pronotum about 0.56 times as long as that of elytra; width of pronotum about 0.94 times as long as that of elytra; posterior margin feebly curved inwardly near both basal corners; basal two foveae strongly impressed and its interval between foveae about 0.75 times as long as the maximal width of pronotum.

Elytra about 1.1 times as long as wide, widest at about basal 1/3 of lateral margins, almost smooth, and densely pubescent; setal socket punctures of elytra dense, and minter than those of head and pronotum; humeral oblique carinae distinct, about 0.29 times as long as elytra.

Hind wings fully development or absent.

Male. Head impressed in anterior part of vertex and bearing a pair of a long upstanding

bristle-like structures on posterior part of vertex; aedeagus long-oval in general (Figs. 16–18); median lobe round apically in ventral and dorsal views (Figs. 16 and 17); both parameres asymmetric in ventral and dorsal views (Figs. 16 and 17); right paramere distinctly curved near apex in lateral view (Fig. 18); each paramere bearing a few ﬁne apical setae.

Famale. Head not modiﬁed on dorsum.

Distribution. Taiwan.

Type series. Holotype: ♂, Tehuashe (alt. 900 m), Nantou, Taiwan, 4-5. v. 2001, H. Sugaya leg. (MNHAH). Paratypes: 2♂4♀, same data as holotype (FU).

Notes. The present new species is a first Taiwanese species of the genus Cephennodes.

Cephennodes (Cephennodes) maya Hoshina, sp. nov. is similar to Cephennodes (Cephennodes) yume

Hoshina, 2017 in appearance, but can be separated from it by having the median lobe of aedeagus long-oval and about 1.7 time as long as wide in ventral and dorsal views (Figs. 16 and 17). In contrast, C. (C.) yume has the median lobe slender and about 2.3 times as long as wide. Moreover, C. (C.) maya sp. nov. also resembles C. (C.) hongkongensis described by Jałoszyński (2008) in shape, but can be distinguished from it by having the median lobe of aedeagus simply round at apex in dorsal

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view (Fig. 17). In contrast, C. (C.) hongkongensis has the he median lobe of aedeagus curved to the left near apex in dorsal view.

Etymology. This speciﬁc name is derived from a Japanese word maya, which means a stable.

Cephennodes (Fusionodes) nemu Hoshina, sp. nov. [Japanese name: Nemu-munabiro-kokemushi]

(Figs. 19–21)

Diagnosis. Dorsum dark reddish brown. Body 1.40–1.45 mm in length. Elytra widest at about basal 1/5 of lateral margins. Hind wings short. Median lobe of aedeagus long-oval in general.

Male and female. Coloration. Dorsum of body shining, almost concolorous, dark reddish brown;

maxillary palpus light brown; antennae brownish; antennomeres 1–8 brown; antennomeres 9–11 a little lighter than others; meso- and metaventrites dark reddish brown except for a black median carina of mesoventrite; abdominal ventrites brown; legs brown in general, except for light brown all tarsi and a little darkish brown metacoxae; pubescence of dorsum light yellowish brown.

Head not showing sexual dimorphism, densely pubescent, and about 0.46 times as wide as pronotum; surface of head smooth; setal socket punctures very minute; vertex very weakly convex; eyes round, about twice as long as wide in dorsal view; antennae normal shape in the genus

Cephennodes; antennomeres 1–2, 7, and 11 each longer than wide; antennomeres 9–10 wider than

long; other antennomeres almost as wide as long; antennomere 11 oval, about 1.9 times as long as wide.

Pronotum bearing dense and very minute socket punctures, densely pubescent, almost smooth, wholly convex but relatively flat near both basal corners, about 1.5 times as wide as long, and widest at base; length of pronotum about 0.59 times as long as that of elytra; width of pronotum almost as long as that of elytra; posterior margin feebly curved inwardly near both basal corners; basal two foveae strongly impressed and its interval between foveae about 0.77 times as long as the maximal width of pronotum.

Elytra about 1.2 times as long as wide, widest at about basal 1/5 of lateral margins, almost smooth, bearing dense and very minute setal socket punctures, and densely pubescent as head and pronotum; humeral oblique carinae distinct, about 0.33 times as long as elytra.

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Hind wings short.

Male. Aedeagus long-oval in general (Figs. 19–21); median lobe about 1.6 times as long as wide

in lateral view (Fig. 21); U-shaped sclerite of aedeagus strongly and simply curved at both sides (Figs. 19 and 20); parameres bearing a few apical setae, and fused to median lobe as other species of subgenus Fusionodes.

Distribution. Japan: Shikoku (Ehime Pref.).

Type series. Holotype: ♂, Mt. Iwaguro, Mts. Ishiduchi, Ehime Pref., Shikoku, 1. vi. 2017, H. Hoshina leg. (MNHAH). Paratypes: 1♀, 1 ex., same data as holotype except for the data (FU). 1♂, 12. vi. 1997, same data as holotype except for the data (FU).

Notes. Cephennodes (Fusionodes) nemu Hoshina, sp. nov. is similar to Cephennodes (Fusionodes) otome Hoshina, 2016 in appearance, but can be separated from it by having the elytra widest at about basal 1/5 of lateral margins and the U-shaped sclerite strongly and simply curved at both sides (Figs. 19 and 20). In contrast, C. (F.) otome has the elytra widest at about basal 1/3 of lateral margins and the U-shaped sclerite of aedeagus sinuate at both sides.

Etymology. This speciﬁc name is derived from a Japanese word nemu, which means a tree,

Albizia julibrissin (Fabaceae).

Cephennodes (Fusionodes) koko Hoshina, sp. nov. [Japanese name: Koko-munabiro-kokemushi]

(Figs. 22–24)

Diagnosis. Dorsum bicolorous. Head and pronotum dark reddish brown and elytra brown. Body 1.30–1.40 mm in length. Elytra widest at about basal 1/3 of lateral margins. Hind wings fully development. Median lobe of aedeagus oval in general.

Male and female. Coloration. Dorsum of body shining and bicolorous; head and pronotum

dark reddish brown; elytra brown; maxillary palpus light brown; antennae brownish; antennomeres 1–8 brown; antennomeres 9–11 a little lighter than others; meso- and metaventrites brown except for a black median carina of mesoventrite; abdominal ventrites a little lighter than meso- and metaventrites; legs brown in general, except for light brown all tarsi and a little darkish brown

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metacoxae; pubescence of dorsum light yellowish brown.

Head not showing sexual dimorphism, densely pubescent, and about 0.53 times as wide as pronotum; surface of head smooth; setal socket punctures very minute; vertex very weakly convex; eyes round, about 1.6 times as long as wide in dorsal view; antennae normal shape in the genus

long; other antennomeres almost as wide as long; antennomere 11 long-oval, about 1.8 times as long as wide.

Pronotum bearing dense and very minute socket punctures, densely pubescent, almost smooth, wholly convex but relatively flat near both basal corners, about 1.5 times as wide as long, and widest at about basal 1/5 or 1/4 of lateral margins; length of pronotum about 0.52 times as long as that of elytra; width of pronotum about 0.87 times as long as that of elytra; posterior margin feebly curved inwardly near both basal corners; basal two foveae strongly impressed and its interval between foveae about 0.71 times as long as the maximal width of pronotum.

Elytra about 1.2 times as long as wide, widest at about basal 1/3 of lateral margins, almost smooth, bearing dense and very minute setal socket punctures, and densely pubescent as head and pronotum; humeral oblique carinae distinct, about 0.36 times as long as elytra.

Hind wings fully development.

Male. Aedeagus oval in general (Figs. 22–24); median lobe about 1.4 times as long as wide

in lateral view (Fig. 24); U-shaped sclerite of aedeagus sinuate at both sides (Figs. 22 and 23); parameres bearing a few apical setae, and fused to median lobe as other species of subgenus

Fusionodes.

Distribution. Japan: Shikoku (Kôchi Pref.).

Type series. Holotype: ♂, Monobe, Kami City, Kôchi Pref., Shikoku, 9. vii. 2013, T. Miyata & T. Miyata leg. (MNHAH). Paratypes: 1♂1♀, 2 exs., same data as holotype (FU). 1♂, Tengu, Tsuno Town, Kôchi Pref., Shikoku, 24. vii. 2012, T. Miyata & T. Miyata leg. (FU). All type specimens were collected by car nets.

Notes. Cephennodes (Fusionodes) koko Hoshina, sp. nov. is similar to Cephennodes (Fusionodes) otome Hoshina, 2016 in appearance, but can be separated from it by having the bicolorous dorsum. In contrast, C. (F.) otome has the almost concolorous dorsum. Moreover, C. (F.)

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koko sp. nov. also resembles C. (F.) loebli Kurbatov, 1995 in shape, but can be distinguished from

it by having the median lobe oval and about 1.4 times as long as wide in lateral view (Fig. 24). In contrast, C. (F.) loebli has the median lobe of aedeagus slender and about 1.9 times as long as wide in lateral view.

Etymology. This speciﬁc name is derived from a Japanese word koko, which means a coco.

Cephennodes (Fusionodes) sakura Hoshina, sp. nov. [Japanese name: Sakura-munabiro-kokemushi]

(Figs. 25–28)

Diagnosis. Dorsum dark reddish brown. Body 1.43–1.52 mm in length. Elytra widest at about basal 1/3 or 2/5 of lateral margins. Hind wings fully development. Median lobe of aedeagus long-oval in general.

Male and female. Coloration. Dorsum of body shining, almost concolorous, dark reddish brown,

or elytra a little lighter than head and pronotum; maxillary palpus light brown; antennae brownish; antennomeres 1–8 brown; antennomeres 9–11 a little lighter than others; meso- and metaventrites dark reddish brown except for a black median carina of mesoventrite; abdominal ventrites brown; legs brown in general, except for light brown all tarsi and a little darkish brown metacoxae; pubescence of dorsum light yellowish brown.

Head not showing sexual dimorphism, densely pubescent, and about 0.54 times as wide as pronotum; surface of head smooth; setal socket punctures very minute; vertex very weakly convex; eyes round, about 1.6 times as long as wide in dorsal view; antennae normal shape in the genus

long; other antennomeres almost as wide as long; antennomere 11 long-oval, about twice as long as wide.

Pronotum bearing dense and very minute socket punctures, densely pubescent, almost smooth, wholly convex but relatively flat near both basal corners, about 1.4 times as wide as long, and widest at about basal 1/4; length of pronotum about 0.53 times as long as that of elytra; width of pronotum about 0.89 times as long as that of elytra; posterior margin feebly curved inwardly near both basal corners; basal two foveae strongly impressed and its interval between foveae about 0.72 times as long

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as the maximal width of pronotum.

Elytra about 1.1 times as long as wide, widest at about basal 1/3 or 2/5 of lateral margins, almost smooth, bearing dense and very minute setal socket punctures, and densely pubescent as head and pronotum; humeral oblique carinae distinct, about 0.33 times as long as elytra.

Hind wings fully development.

Male. Aedeagus long-oval in general (Figs. 25–27); median lobe about 1.6 times as long as wide

in lateral view (Fig. 27); U-shaped sclerite of aedeagus almost straight at both sides (Figs. 25 and 26); parameres bearing a few apical setae, and fused to median lobe as other species of subgenus

Fusionodes.

Distribution. Japan: Shikoku (Ehime Pref.) and Kyushu (Fukuoka Pref. and Ôita Pref.). Type series. Holotype: ♂, Mt. Hikosan, Fukuoka Pref., Kyushu, 26. vi. 1995, H. Hoshina leg. (MNHAH). Paratypes: 1♂1♀, Mt. Kurodake, Ôita Pref., Kyushu, 24. vi. 1996, H. Hoshina leg. (FU). 1♂, Omogo Valley, Ehime Pref., Shikoku, 5. viii. 1998, H. Hoshina leg. (FU).

Notes. Cephennodes (Fusionodes) sakura Hoshina, sp. nov. is similar to Cephennodes (Fusionodes) otome Hoshina, 2016 in appearance, but can be separated from it by having the U-shaped sclerite of aedeagus almost straight at both sides (Figs. 25 and 26). In contrast, C. (F.)

otome has the U-shaped sclerite of aedeagus sinuate at both sides.

Male aedeagus of C. (F.) sakura show intraspeciﬁc variation. U-shaped sclerite of holotype rel-atively thick and weakly curved at both sides in lateral view (Fig. 27). In contrast, that of two male paratypes relatively slender and strongly curved in lateral view (Fig. 28).

Etymology. This speciﬁc name is derived from a Japanese word sakura, which means a cherry. References

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