Stenoscelis longisetosus Konishi 1956
Creators: name: Inoue, Shûgo
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Curculionidae
Stenoscelis
Stenoscelis longisetosus

description: Stenoscelis longisetosus Konishi, 1956
[Japanese common name: Kenaga-kuchibuto-kikui-zômushi]
(Figs 21–22, 30–34, 72 & 81)
Stenoscelis longisetosus Konishi, 1956: 110 (type locality: “ Gifu Pref., Honshu”); Konishi, 1962 (in key); Morimoto, 1983 (in key); Morimoto & Kojima, 2004 (cataloged).
Stenoscelis longisetosa: Hlaváč & Maughan, 2013 (misspelling, cataloged); Alonso-Zarazaga et al., 2023 (misspelling, cataloged).
Stenoscelis cryptomeriae Konishi, 1962: 13 syn. nov. (type locality: “Kobotoke-tôge, Asakawa, Tokyo”); Morimoto, 1983 (in key); Zherikhin & Egorov, 1991 (Far East, Russia); Morimoto & Kojima, 2004 (cataloged); Hlaváč & Maughan, 2013 (cataloged); Legalov, 2020 (cataloged); Alonso-Zarazaga et al., 2023 (cataloged).
Diagnosis. Stenoscelis longisetosus is very similar to S. aceri in the upper margin of scrobe being directed to middle of eye, the elytral setae on the declivity being arranged in a single row and located behind a granule, and the elytral striae being punctate from base to apex. But it differs from S. aceri in the following character states: elytra shorter (1.6–1.7 times as long as wide); apex of elytra conjointly rounded (Fig. 81), obtusely angulated in lateral view (Fig. 22); aedeagal body 1.4 times as long as wide, 1.0 times as long as apodeme (Figs 30–31); spermatheca with collum developed and ramus not developed (Fig. 34).
Redescription. Body length 2.8–3.4 mm; black, rather shiny; mouth parts, antennae, tarsi, and apical part of tibiae reddish brown; setae yellowish brown.
Rostrum 0.6–0.7 times as long as wide; dorsum convex; dorsal surface reticulate, rugosely punctate; punctures small, separated by interspace approximately 1–2 times as long as diameter; upper margin of scrobe directed to middle of eye; epistome with six long setae basally, with anterior margin obtusely projected at right side. Head with dorsal surface reticulate, smoothly punctate; punctures small, separated by interspace approximately 2–4 times as long as diameter; interocular area with a shallow fovea; eye round, hardly convex.
Antennae with club subcircular, slightly wider than long; funicle 7-segmented, slightly longer than club.
Prothorax 0.8 times as long as wide, widest before base, gradually narrowed anteriorly, weakly sinuate laterally; anterior margin weakly sinuate in middle or not; subapical constriction distinct on lateral side, obsolete on dorsal side; disc reticulate, rugosely punctate; punctures medium, separated by interspace almost as long as or narrower than diameter.
Elytra 1.6–1.7 times as long as wide, 1.1 times as wide as and 2.1–2.3 times as long as prothorax, subparallel, conjointly rounded at apex; apex obtusely angulated in lateral view; striae rather deep, with medium punctures separated by interspace approximately 1–2 times as long as diameter; apical part of striae moderated, not dilated or reticulate; second stria distinctly separated from base; intervals somewhat convex, with an irregular row of small puncture; base of second to third or fourth interval rugosely punctate-granulate; apical half of ninth interval and tenth interval carinate; granules of intervals arranged in a single row, indistinct basally, distinct and conical on declivity; setae on declivity arranged in a single row, each behind a granule, distinct and more than twice as long as granules.
Aedeagal body (Figs 30, 31) 1.4 times as long as wide, 1.0 times as long as apodeme, moderately arcuate laterally, gradually narrowed and weakly prolonged apically; apodeme attached sublaterally; endophallus with a pair of sclerite on subapical part; tegmen (Fig. 32) without dorsal part and paramere, with distinct manubrium; spiculum gastrale (Fig. 33) gradually curved to right side apically, not expanded apically; sternite VIII divided, with several long setae apically; without spinulate apical membranous area.
Spiculum ventral not bifurcate at base; spermatheca with cornu falciform; collum well developed; ramus not developed.
Distribution. Japan: Hokkaido, Honshu and Shikoku; Russia: Far East.
Biological note. The adults were collected from under the bark of Cryptomeria japonica (L.f.) D.Don in Kobotoke-pass, Tokyo Met. (holotype of S. cryptomeriae) and the dead branch of Chamaecyparis obtuse (Siebold et Zucc.) Endl., inside of which there were tunnels which are supposed to be bored by adults, in Ina-shi, Nagano Pref.
Type material. Holotype of Stenoscelis longisetosus (Figs 21 & 22): “Pref Gifu / 1934.7.9 / Hideo Ise” (white card); “ Stenoscelis / longisetosus / KONISHI, ♂ / Holo-Type” (red card); “Photo / Dr. Okada / No. 6 / 1959” (red card); “Photo” (pink card); “HOLOTYPE / The label attached by / ÔHARA and HIRONAGA / 2006” (white card); “0000000252 / Sys. Ent / Hokkaido Univ. / Japan [SEHU]” (white card). Holotype of Stenoscelis cryptomeriae: “[Tokyo]. Kobotoke / -pass Vi 5th 1948 / [Coll. N. Hayashi,]” (white card); “ ť. "ǝ下 ” (white card); “Host / Cryptomeria / japonica / (under bark)” (yellow card); “Holo-type / Stenoscelis / cryptomeriae / KONISHI” (red card); “HOLOTYPE / The label attached by / ÔHARA and HIRONAGA / 2006” (white card); “0000000258 / Sys. Ent / Hokkaido Univ. / Japan [SEHU]” (white card). Paratype of Stenoscelis longisetosus: “Pref Gifu / 1934.7.9 / Hideo Ise” (white card); “ Stenoscelis / longisetosus / KONISHI, ♀ / Allo-Type” (red card); “PARATYPE / The label attached by / ÔHARA and HIRONAGA / 2006” (white card); “0000000253 / Sys. Ent / Hokkaido Univ. / Japan [SEHU]” (white card).
Non-type material. Hokkaido: [Hokkaido Pref.]: 1 female, Mikasa, 30.VII.2011, K. Onodera leg. (KUM); 1 male, 2 female, Maruyama, Sapporo-shi, 7.VII.2017, N. Tsuji, S. Hori & N. Kikuchi leg. (KUM); Honshu: [Aomori Pref.]: 1 unsexed, Iizume, 9.VII.1977, A. Abe leg. (KUM); 3 unsexed, Tsutanuma, Towadako-machi, 25.VII.2004, T. Ozaki leg. (KUM); 1 male, 1 unsexed, ditto, 26. VI.2005, T. Ozaki leg. (KUM); 3 unsexed, ditto, 6.VIII.2005, T. Ozaki leg. (KUM); 2 unsexed, ditto, 1.VII.2007, T. Ozaki leg. (KUM); 2 unsexed, ditto, 27.VII.2008, T. Ozaki leg. (KUM); 1 unsexed, Tsuta, Towadako-machi, 15.VII.1997, T. Ozaki leg. (KUM); 2 unsexed, ditto, 20.VII.1997, T. Ozaki leg. (KUM); 2 unsexed, ditto, 18.VII.1998, T. Ozaki leg. (KUM); 1 unsexed, ditto, 31.VIII.2000, T. Ozaki leg. (KUM); 4 unsexed, ditto, 30. VI.2002, T. Ozaki leg. (KUM); 1 unsexed, ditto, 7.VIII.2005, T. Ozaki leg. (KUM); 1 unsexed, Shiraiwa, Ozaki, Hiraka-machi, 5. VI.2004, T. Ozaki leg. (KUM); 1 unsexed, Kiraichi, Kanagi-machi, 9.VII.1995, T. Ichita leg. (KUM); 1 unsexed, Micro-rindô, Takko-machi, 9.VIII.1998, T. Ozaki leg. (KUM); 3 unsexed, ditto, 26. VI.1999, T. Ozaki leg. (KUM); 1 unsexed, Dake, Iwaki-machi, 6. VI.1999, T. Ozaki leg. (KUM); 1 unsexed, ditto, 17. VI.2000, T. Ozaki leg. (KUM); 1 unsexed, Ichinowatari, Hirosaki City, 19. V.1991, T. Ozaki leg. (KUM); 2 unsexed, Mitori, Shiura-mura, 18. VI.2005, T. Ozaki leg. (KUM); 1 male, 1 female, ditto, 25. VI.2005, T. Ozaki leg. (KUM); 1 unsexed, ditto, 7.VII.2007, T. Ozaki leg. (KUM); 1 unsexed, Ôyamanagane, Todomari-mura, 4.X.1997, T. Ozaki leg. (KUM); 1 unsexed, ditto, 6.IX.1998, T. Ozaki leg. (KUM); 1 unsexed, Tsubaigawa, Iwasaki-mura, 8. VI.1996, T. Ozaki leg. (KUM); 1 unsexed, ditto, 28. VI.1997, T. Ozaki leg. (KUM); 1 unsexed, Jûniko, Iwasaki-mura, 7. VI.2002, T. Ozaki leg. (KUM); 1 unsexed, Akaishiôhashi, Ajigasawa-machi, 21.VII.1997, T. Ozaki leg. (KUM); 1 unsexed, Tashirotai, Aomori-shi, 18. VI.2000, T. Ozaki leg. (KUM); 1 unsexed, Yunomata, Oohatamachi, Shimokita Pen., 29.VII.1956, K. Morimoto leg. (KUM); [Miyagi Pref.]:1 unsexed, Akiho, Sendai-shi, 16. VI.2009, J. Aoki leg. (KUM); 1 unsexed, Futakuchi, Taihaku-ku, Sendai-shi, 11.VII.2010, T. Ozaki leg. (KUM); 1 unsexed, Ôhama, Ogatsu-machi, 27. VI.2010, T. Ozaki leg. (KUM); 1 unsexed, Tekurayama, Marumori-machi, 21.IV.2012, T. Ozaki leg. (KUM); 1 unsexed, Kawaharago dam, Shiraishi-shi, 26.VIII.2012, T. Ozaki leg. (KUM); [Fukushima Pref.]: 1 unsexed, Sasagoya, Takinohara, Minamiaidu Town, 19. VI.2016, Y. Fujisawa leg. (KUM); [Tochigi Pref.]: 1 unsexed, Amamaki-san, Mashiko-machi, 11. VI.2007, K. Takahashi leg. (KUM); 1 unsexed, Dorobu, Nikko, 15.VIII.2011, K. Takahashi leg. (KUM); 4 unsexed, Chûgûshi, Nikkô-shi, 10. VI.2023, Y. Kanzawa leg. (KUM); [Gumma Pref.]: 1 male, Kuni-mura, 29. VI.2005, K. Takahashi leg. (KUM); [Fukui Pref.]:1 unsexed, Mt. Aoba, 21–24.VII.1974, H. Sasaji leg. (KUM); 1 unsexed, Teratani, Hanjyo town, em. 21. VI.1997, Shoji Inoue leg. (KUM); 1 unsexed, Kusuyagadake, Obama city, 30. VI.2004, Shoji Inoue leg. (KUM); [Nagano Pref.]: 1 male, Kamimaki, Ina-shi, 11. VI.2016, T. Hashizume leg. (KUM); 1 male, ditto, 2.VII.2016, T. Hashizume leg. (KUM); 1 unsexed, ditto, from dead branch of Chamaecyparis obtusa (Siebold et Zucc.) Endl., 1.IX.2022, T. Hashizume leg. (KUM); 1 female, Ogiso, Kiso-mura, 8.VII.2017, T. Hashizume leg. (KUM); 1 unsexed, Nishiminowa, Ina-shi, 1.VII.2022, T. Hashizume leg. (KUM); [Gifu Pref.]: 1 unsexed, Uchigatani, Yamato, 21. VI.1995, Y. Takai leg. (KUM); [Shizuoka Pref.]: 1 unsexed, Mt. Tokasa, Izu, 31. V.1970, S. Miyakawa leg. (KUM); 2 unsexed, Amagi toge– Nihonsugi toge, Izu, 19.VII.1972, S. Miyakawa leg. (KUM); 1 unsexed, Mt. Manzaburo-dake, Izu hanto, 19. V.1980, J. Okuma leg. (KUM); [Mie Pref.]: 1 unsexed, Asake-keikoku Valley, Komono, 27.VIII.2009, N. Tsuji & M. Amagasu leg. (KUM); 1 unsexed, Kurakake Pass, Fujiwara, Inabe-shi, 20.VII.2012, N. Tsuji leg. (KUM); 1 unsexed, Mt. Nobobori, Kameyama, 19.VII.2015, N. Tsuji leg. (KUM); [Shiga Pref.]: 1 unsexed, Kitahira-tôge Pass, Kitahira, Ôtsu-shi, alt. 750–900 m, 29. V.2022, R. Nakamura leg. (KUM); 2 unsexed, Mt. Iwao-san, Sugitani, Kônan-chô, Kôka-shi, 21. VI.2023, S. Imada leg. (KUM); 1 unsexed, Onyû-tôge, Takashima-shi, 15.VII.2023, S. Imada leg. (KUM); [Wakayama Pref.]: 1 unsexed, Hattoki, 10.VII.2011, I. Matoba leg. (KUM); 1 unsexed, Toishiyama, Aritagawa-machi, 16.VII.2012, I. Matoba leg. (KUM); Shikoku: [Ehime Pref.]: 1 unsexed, Mt. Takanawasan, Matsuyama-city, 6.VIII.2008, R. Ogawa leg. (KUM); 1 unsexed, Hoino, Do-gamori, 2. VI.1966, M. Iga leg. (EUM).
Remarks. In the original description (Konishi, 1962), S. cryptomeriae was discriminated from S. longisetosus by the sculpture of disc of elytral intervals: punctate in S. cryptomeriae, granulate in S. longisetosus. However, there is almost no significant difference in the punctation or the granules on the elytral intervals between the holotypes of the two species, and also no difference in the male genitalia. Thus, S. cryptomeriae is here treated as a newjunior synonym of S. longisetosus.
description: Published as part of Inoue, Shûgo, 2025, Revision of the genus Stenoscelis Wollaston (Coleoptera: Curculionidae: Cossoninae) of Japan, pp. 462-490 in Zootaxa 5583 (3) on pages 470-473, DOI: 10.11646/zootaxa.5583.3.3, http://zenodo.org/record/14804799