Plesiochara inflexa, Inoue & Maruyama, 2022
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publication ID |
https://doi.org/ 10.11646/zootaxa.5165.4.3 |
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publication LSID |
lsid:zoobank.org:pub:B0760118-093B-4198-8EB4-B7B6CA39BE14 |
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DOI |
https://doi.org/10.5281/zenodo.6857492 |
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persistent identifier |
https://treatment.plazi.org/id/FA188782-FF8F-FFE7-1283-FE6B7D16F808 |
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treatment provided by |
Plazi |
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scientific name |
Plesiochara inflexa |
| status |
sp. nov. |
Plesiochara inflexa View in CoL sp. nov.
Japanese common name: Nise-kusabira-hanekakushi
( Figs 6A–F View FIGURE 6 , 7A–D View FIGURE 7 , 8 View FIGURE 8 , 12D–F View FIGURE 12 )
Description. Body elongate; head, thorax and abdomen dark brown; antennae dark reddish brown, with basal part paler; mouth parts and legs reddish yellow; elytra reddish yellow with posterolateral portion darker; head, thorax, abdominal sternites, elytra, and legs covered with setae rather densely; abdominal tergites sparsely covered with setae; dorsal surface of head and pronotum densely covered with reticulation; elytra weakly rugose; abdominal tergites glossy.
Head circular, slightly longer than or as long as wide; postocular parts roundly narrowed toward base; eyes ovate. Antennae slender, longer than a combination of head and pronotum; segments IV–V slightly longer than wide; segments VI–VII as long as wide; segments VIII–IX slightly transverse; segments X as long as wide; segments XI ovate.
Pronotum almost hexagonal, slightly wider than long; anterior margin widely rounded; lateral margin moderately rounded, narrowed more strongly to posterior than anterior; anterior corners rounded; posterior corners obtusely roundly angulated; hypomera visible in lateral view, with posterior part of carina ( Fig. 12D–F View FIGURE 12 ) directed to posterolateral corners obliquely and curved inward at posterior end in most cases.
Mesoventrite shortly carinate at base of midline; inner coxal process narrow, elongate, reaching to metaventrite process. Metaventrite with inner coxal process short, moderately narrow.
Elytra wider than long, longer and wider than pronotum, weakly diverging to posteriorly, widest near posterolateral corners; hind margin sinuate near posterolateral corners. Hind wings developed.
Abdomen moderately elongate, parallel sided; tergites III–VII with small pores at basal impression; VIII tergite with posterior margin smooth, shallowly emarginate medially in both sexes. VIII sternum with posterior margin smooth, widely rounded in both sexes.
Legs slender, rather long (HTL/PL = 1.27–1.40); surface of fore and middle tibia not covered with spines; hind tarsal segments I longer than a combination of II and III.
Male: Median lobe of aedeagus ( Fig. 6B–E View FIGURE 6 ) rather large; apical lobe rather thin, curved ventrally; sclerites 1 oblong, narrowed ventrally, curved posteriorly at ventral apex; one pair of sclerites 4 (sc4) rather distinct, located near apex of sclerites 2, strongly curved inward.
Female: Spermatheca ( Fig. 6F View FIGURE 6 ) with capsule ovate, small, almost as long as chamber.
Measurements. BL 4.5–5.5, FBL 2.63–3.10, HW 0.74–0.77, HL 0.76–0.80, PW 0.93–1.07, PL 0.83–0.98, EW 1.33–1.44, EL 1.01–1.21, HTL 1.05–1.32.
Variation. Tanzawa mountains (Mt. Ishihodo-yama, Kanagawa Pref.; near Dôsaka tunnel, Yamanashi, Pref.): Hypomera with carina not curved inward at posterior end ( Fig. 12F View FIGURE 12 ); legs longer; median lobe of aedeagus with apical lobe thin, rather weakly curved ventrally, narrower in ventral view ( Fig. 7A–B View FIGURE 7 ). Shikoku (Mt. Tsurugi-san, Tokushima Pref.): median lobe of aedeagus with apical lobe thin, rather weakly curved ventrally, narrower in ventral view ( Fig. 7C–D View FIGURE 7 ). Hypomeral carina curved weakly or not curved in eastern localities ( Fig. 12E View FIGURE 12 ), curved strongly in northern localities ( Fig. 12D View FIGURE 12 ).
Type materials. Holotype: male, Wakasugi forest , Nishiawakura-son, Okayama Pref., JAPAN, 22.X.2009, T. Ito leg., from mushroom ( KUM) . Paratype. JAPAN: Hokkaido: [Hokkaido Pref.]: 1 unsexed, Kiyosato-chô , 27.X.2009, K. Matsumoto leg. (cI) ; 1 unsexed, Kamimuri, Maruseppu-chô , 21. V.2000, M. Maruyama leg., from bear dung ( KUM) ; 1 unsexed, Nagahashi, Naebo, Otaru-shi , 1. V.1992, M. Ôhara leg., by bait trap ( KUM) ; 5 male, 3 female, 5 unsexed, ditto, 8.X.1992, M. Ôhara leg. By bait trap ( OM, KUM) ; 2 unsexed, ditto, 15.X.1992, M. Ôhara leg. By bait trap ( KUM) ; 3 female, 1 unsexed, ditto, 22.X.1992, M. Ôhara leg. By bait trap ( OM, KUM) ; 2 male, 2 female, 1 unsexed, ditto, 29.X.1992, M. Ôhara leg. By bait trap ( KUM) ; 1 male, ditto, 5.XI.1992, M. Ôhara leg. By bait trap ( KUM) ; 2 female, Kakkumi-chô, Hakodate-shi , 12.IV.2020, Y. Tasaku leg. ( KUM) ; Honshu : [Aomori Pref.]: 1 male, Oirase, Fukaura-chô , 9.VII.1989, A. Abe leg. ( KUM) ; [Yamagata Pref.]: 1 male, 1unsexed, Ichino-taki, Chôkai-zan, Sakata-shi , 10.X.2015, H. Ooki leg. ( KUM, cO) ; [Fukushima Pref.]: 1 male, 1 unsexed, Futamata-onsen , Ten-ei-mura, 850 m, 19.X.2003, S. Nomura leg. ( KUM) ; [Tochigi Pref.]: 1 female, Okukinu, Kuriyama-mura , 30. V.1991, S. Naomi leg. ( KUM) ; [Gunma Pref.]: 1 male, 3 unsexed, Marunuma, Katashina-mura , 23.IX.1969, Y. Shibata leg. ( KUM) ; 4 male, 1 female, Tamahara-kogen, Kamihocchi-machi, Numata-shi , 26.X.2003, N. Kanai leg. ( KUM) ; 2 unsexed, Aratosawa, Mt. Hotaka-san, Katashina-mura , 950 m, 15.X.2000, H. Kamezawa leg. ( KUM) ; 2 male, 1 unsexed, Kirizumi spa, Yasunaka-shi , 29.IV.1958, Y. Shibata leg. ( KUM) ; 1 unsexed, ditto, 18. VI.1958, Y. Shibata leg. ( KUM) ; [Kanagawa Pref.]: 6 males, 1 female, 3 unsexed, Mt. Ishihodo-yama, Yamakita-machi, Kanagawa Pref. , 9.X.1995, T. Watanabe leg. ( KUM) . [Toyama Pref.]: 1 unsexed, Masagosawa, Mt. Tsurugi-dake, Tateyama-machi , 18.VII.1962, Y. Hayashi leg. ( KUM) ; [Fukui Pref.]: 6 male, 2 female, 2 unsexed, Kôkura, Imajo-chô , 14–18.X.1996, K. Ishida et al. leg. ( KUM) ; 1 male, Mt. Hyakuri-ga-take, Obama-shi , 5. V.1979, H. Sasaji leg. ( KUM) ; [Yamanashi Pref.]: 1 unsexed, Norogawa-deai , Minami-Alps-shi, 3.VII.1980, H. Yamazaki leg. ( KUM) ; 1 female, Kitazawa-tôge pass, Minami-Alps-shi, 28–30. VI.1980, H. Yamazaki leg. ( KUM) ; 1 male, near Dôsaka tunnel, Dôshi-mura , 16.XI.1996, T. Watanabe leg. ( KUM) ; [Nagano Pref.]: 1 unsexed, Hakuba-mura , 20.X.2007, T. Ito leg. (cI) ; 3 unsexed, Norikura, Matsumoto-shi , 1500 m, 26. V –1. VI.2008, H. Asaki leg. ( KUM) ; 1 unsexed, ditto, 2100 m, 27.VIII–02.IX.2008, H. Asaki leg. ( KUM) ; 5 unsexed, ditto, 1800 m, 18–22.IX2008, H. Asaki leg. ( KUM) ; 1 unsexed, Nagawa, Matsumoto-shi , 1500 m, 11–14. VI.2008, H. Asaki leg. ( KUM) ; 4 unsexed, ditto, 1600 m, 10–16.IX.2008, H. Asaki leg. ( KUM) ; 2 unsexed, ditto, 1500 m, 31.X–6.XI.2008, H. Asaki leg. ( KUM) ; [Gifu Pref.]: 2 unsexed, Hirayu, Takayama-shi , 12.X.1980, K. Konishi leg. ( KUM) ; 1 unsexed, Nishihotaka-guchi, Takayama-shi , 11. VI.1980 ( KUM) ; 2 unsexed, Mannami River, Miyagawa, Hida-shi , 5.XI.1980, S. Saito leg. ( KUM) ; 1 male, 1 female, 4 unsexed, Ooshirakawa, Shirakawa-mura , 26.X.1980, Y. Takai leg. ( KUM) ; 3 unsexed, Shirakawa-super-rindsuô, Shirakawa-mura , 11.X.1997, Y. Takai leg. ; 3 unsexed, Magari–Sanpôiwa, Hakusan, Shirakawa-mura , 13.X.1996, Y. Takai leg. ; 1 unsexed, Shirakawa-mura , 22.X.2006, K. Toyoshima leg. (cI) ; 1 unsexed, Mt. Fukube-ga-take, Minami-mura, Gujô-shi , 12. V.2002, A. Sugimura leg. ( KUM) ; [Kyoto Pref.]:
1 male, 1 female, Sugio-tôge pass, Ashiu, Nantan-shi , 15.X.1993, K. Setsuda leg., from Omphalotus japonicus (Kawam.) Kircham. & O. K. Mill. (KUM); [Nara Pref.]: Kamikitayama-mura, 4.X.2009, T. Ito leg., from mushroom ( KUM, cI); [Tottori Pref.]: 3 female, 2 unsexed, Daisen , 8.XI.1977, S. Naomi leg. ( KUM); [Okayama Pref.]: 1 male, 2 female, 4 unsexed, Wakasugi forest, Nishiawakura-son , 22.X.2009, T. Ito leg., from mushroom ( KUM, cI) ; 1 male, Wakasugi-tôge pass, Nishiawakura-son 8. V.1977, Watanabe leg. ( KUM); [Hiroshima Pref.]: 4 unsexed, Mt. Tateeboshi-yama , Saijô-chô , Shôbara-shi , 30.IV.2022, S. Inoue leg., by shifting leaf litter ( KUM); Oki Isls. : [Shimane Pref.] : 1 male, Minamidani-rindo, Dougo, Okinoshima-chô, 10.XI.2004, T. Watanabe leg. ( KUM); Shikoku : [Tokushima Pref.] : 4 male, 3 unsexed, Mt. Tsurugi-san , 15–17.X.1980, S. Naomi leg. ( KUM) .
Distribution. Japan: Hokkaido, Honshu, Oki Isls., and Shikoku ( Fig. 8 View FIGURE 8 ).
Bionomics. The collecting records show that P. inflexa is distributed in lowlands to mountainous areas of Hokkaido, and mountainous areas to subalpine areas in Honshu and Shikoku. Adults appear in fall and spring to early summer (late September–November, April–early July), and are found in mushroom (e. g. Omphalotus japonicus (Kawam.) Kircham. & O. K. Mill ), animal droppings, and fallen leaves.
Diagnosis. Plesiochara inflexa is similar to P. japonica and P. nitida but can be distinguished by the sexual characters median lobe of aedeagus with apical lobe thin, entirely curved ventrally; sclerites 1 oblong narrowed ventrally, curved posteriorly at ventral apex; spermatheca with capsule ovate, almost as long as chamber.
Etymology. The specific name alludes to the shape of sclerites 4, which are strongly curved inwards.
| T |
Tavera, Department of Geology and Geophysics |
| KUM |
Resource Management Support Center |
| V |
Royal British Columbia Museum - Herbarium |
| OM |
Otago Museum |
| VI |
Mykotektet, National Veterinary Institute |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.