Lemula (s. str.) rufithorax Pic, 1901

Ohbayashi, Nobuo & Chou, Wen-I, 2019, Revision of the genus Lemula (Coleoptera, Cerambycidae, Lepturinae), Zootaxa 4671 (4), pp. 451-499 : 456-457

3. Lemula (s. str.) rufithorax Pic, 1901

(Figs. II-3, VI-3, XV-3)

Lemula rufithorax Pic, 1901: 57 . Type locality: Central Honshu, Japan.—Aurivillius, 1912: 168.—N. Ohbayashi, 2007: 362, pl. 6, figs. 3, 4.

Lemula decipiens rufithorax: Tamanuki, 1939: 97 .

Lemula decipiens ab. rufithorax: Mitono [1941] : 16.— Hayashi, 1944: 25.

Lemula decipiens ab. nigroguttata Hayashi, 1944: 26, fig. 2. Type locality: Kanmuri-yama, Hiroshima Pref., Japan.

Diagnosis. Male: BL = 6.0–8.0 mm. Body reddish brown; vertex, underside of body black except yellow lateral margin of each abdominal ventrite; antennae blackish brown except for each apex of I–IV antennomeres, and each base of VI–XI pale color; pronotum and elytra yellowish to reddish yellow, and sometimes each elytron widely blackish except marginal area in male (ab. nigroguttata); base of each femur pale yellow. Head and pronotum furnished with intermixed whitish and brownish short hairs; elytra sparsely furnished with pale yellow slanted hairs.

Head and pronotum densely covered with small punctures; antennae long, reaching apical third to fourth of elytra.

Pronotum shorter than width across lateral tubercles (PL/PW = 0.87).

Elytra longer than twice humeral width (EL/EW = 2.14), rather roughly punctured with rugged texture.

Endophallus (Type B). Dorsal view: CT swollen, dm cordiform with round ds surrounded by reverse parenthesis shaped lrs; PB expanded laterally with tongue shaped dm, then strongly constricted distally; APH nearly circular. Lateral view: CT moderately inflated ventrally; PB weakly inflated ventrally with colored area at distal half, and distinctly projected dorsally; APH small and nearly circular.

Female: BL = 6.4–8.8 mm; PL/PW = 0.89; EL/EW = 2.06. Similar to male, but antennae reaching middle of elytra; elytra always reddish brown; abdominal ventrites yellow except for each black middle area of I–II, or I–III.

Type material examined. Lemula rufithorax Pic, 1901 : Holotype ♀ (MNHN), “MUSEUM PARIS / NIPPON MOYEN / ENV. DE TOKIO / ET ALPES DE NIKKO / J. HARMOND 1901”, “ HOLOTYPE ”, “ Lemula / rufithoraxs Pic / n. sp. ”, “ Maurice Pic det. 1901”.

Other material examined. [ Japan]: Mt. Kumotori (=ιm), Okutama, Tokyo Met. Pref. [3 exs., 11–12-VI- 1983, N. Ohbayashi leg.]; Mt. Sukaisan (·海m), Numata, Gunma Pref. [1 ex. 14-VI-2018, Y. Notusu leg.]; Mt. Amagi (ξ<m), Shizuoka Pref. [3exs., 3–5-V-1956, H. Hattori leg.]; Jizô-pass (»蔵ŋ), Nagano Pref. [3 exs., 23-V-1982, K. Takahashi leg.]; Todai (Ḫȗ), Hasemura, Nagano Pref. [6 exs., 3-V-2003, S. Maru leg.; 25 exs., 22-IV-2017, T. Ito leg. (G-958)]; Hôuraiko (鳳ƫ湖), Shinsiro, Aichi Pref. [12 exs., 22-IV-2017, H. Hasegawa leg. (G-949)]; Mt. Kanmuri (Ηm), Hiroshima Pref. [1 ♂ (f. nigroguttata), 10-V-1976, T. Kosaka & T. Murakami leg.]; Okegoya (flϋϖ›, Odamiyama, Ehime Pref. [6 exs., 6-V-1995, N. Ohbayashi leg.]; Omogo Valley (面Ṇĸ), Ehime Pref. [1 ex., 31-V-1981, M. Sakai leg.]; Shibukusa (¢草), Omogo, Ehime Pref. [12 exs., 6-IV-1994, Y. Utsunomiya leg. (G-895)]; Mt. Ishizuchi (石鎚m), Ehime Pref. [14 exs., 16-V-2013, N. Ohbayashi leg.]; Mt. Hikosan (ƛøm), Fukuoka Pref. [1♂ (ab. nigroguttata), 3-V-1967, M. Amano leg.; 2♂♂ (ab. nigroguttata), 1♀, 8-V-2010, T. Mori leg. (G-977)]; Asono-kurodake (Ḥ蘇/黒ae), Yufu City, Ôita Pref. [9♂♂ (ab. nigroguttata), 4♀♀, 5-V- 2005, E. Sakamoto leg.] Mt. Kurodake (黒ae), Ôita Pref. [1♂ (ab. nigroguttata), 18-V-1985, N. Ohbayashi leg.] .

Distribution. Japan (Honshu, Shikoku, Kyushu).

Ecology. Flight period: April–June. Flower records: Acer , Stephanandra , Symplocos .

Remarks. Hayashi (1944) described ab. nigroguttata from Hiroshima Pref., Japan under L. decipiens but it is now thought to be a male local variety of L. (s. str.) rufithorax occurring in western Japan.