Oides thibettana Jacoby

Lee, Chi-Feng & Beenen, Ron, 2017, Revision of the Palaearctic and Oriental species of the genus Oides Weber, 1801 (Coleoptera: Chrysomelidae: Galerucinae), Zootaxa 4346 (1) : 106-108

Oides thibettana Jacoby , valid species

( Figs 66 )

Oides thibettana Jacoby, 1900: 128 ( China: Tibet);

Oides thibetana [sic!]: Weise, 1924: 6 (catalogue); Winkler, 1930: 1303 (catalogue); Gressitt & Kimoto, 1963: 479 (list); Wilcox, 1971: 17 (catalogue).

Oides tibetana [sic!]: Kimoto, 1989: 39 (as synonym of O. tarsata , misdentification).

Oides tarsata: Beenen, 2010: 491 (catalogue). Misdentification

Types. Lectotype ♂ (BMNH), here designated, labeled: “[aedeagus glued on card] // SYN- TYPE [p, w, circle label with blue border] // Thibet [h, w] // Jacoby Coll. / 1909-28 a, [p, w] // Oides / thibettana / Jac. [h, b]”. Paralectotype. 1♀ (BMNH), same data as lectotype.

Redescription. Length 8.8–9.9 mm, width 7.3–8.0 mm. General color yellow; antennae yellow, but antennomeres VI–XI darker; meso- and metathoracic and abdominal ventrites blackish brown; legs yellow. Antennae filiform in males ( Fig. 66A ), antennomeres III longest, III–VII slightly serrate, VIII–XI elongate, length ratios of antennomeres I–XI 1.0: 0.5: 1.0: 0.8: 0.8: 0.8: 0.8: 0.7: 0.7: 0.6: 0.8, length to width ratios of antennomeres I–IX 2.8: 1.8: 3.5: 2.7: 2.8: 2.8: 2.5: 2.4: 2.2: 2.1: 2.8; a little broader in female ( Fig. 66B ), length ratios of antennomeres I–XI 1.0: 0.5: 1.0: 0.9: 0.8: 0.8: 0.7: 0.7: 0.7: 0.6: 0.8, length to width ratios of antennomeres I–IX 2.4: 1.7: 3.6: 3.0: 2.7: 2.6: 2.5: 2.2: 2.1: 2.0: 2.6. Pronotum transverse, 2.1x wider than long, disc without reticulate microsculpture but with dense, fine punctures, baso-lateral angles rounded, apicolateral angles rectangular, apical margin moderately concave. Elytra elongate oval, widest at middle, 1.1x longer than wide, disc without reticulate microsculpture but with dense, fine punctures; moderately convex, epipleurae located 7/10 distance between suture and lateral margins; humeral calli visible, surrounded by curved depression.

Penis ( Figs 66C–66G ) broad, 6.0x longer than wide; widest at apical 1/6, narrowest at basal 1/3, narrowed from apical 1/6 to basal 1/3; apically bifurcate, apices approximate; tectum reduced; slightly curved in lateral view, apex hooked; ventral surface with shallow and narrow notch at apex, inside apex membranous; endophallic sclerite complex comprising one pair of lateral sclerites, apex acute and base swollen, base connected with dorsal surface of penis. Apical margin of abdominal ventrite V in female slightly concave, depressed at middle. Gonocoxae reduced. Ventrite VIII ( Fig. 66H ) transverse, medial area projecting anteriorly and erect, apical margin truncate or medially depressed, with long setae along apical margin, much denser at medially; disc with circular depression near middle of apical margin, spiculum long. Receptacle of spermatheca ( Fig. 66I ) as wide as pump, connected to pump, basally narrowed; pump strongly curved; proximal spermathecal duct short, with narrowed apical sclerotized area at apex and covered densely with minute spines.

Diagnosis. This species is a member of the O. tarsata species group. For differences between species see diagnosis of O. geiseri sp. nov.

Other specimens examined. CHINA. Sichuan (= Szetschwan): 1♂ ( NMPC), leg. E. Pawlik; 3 exs. ( FREY); 1♀ ( KMNH), Muping, 1–3.VII.1929, leg. D. C. Graham; Tibet: 11 exs. ( FREY), leg. Le Moult; MYANMAR. 1♂, 1♀ ( MCSN), Carin Chebà, 900–1100m, V.–XII.1888, leg. L. Fea.

Distribution. China (Sichuan, Tibet), Myanmar ( Fig. 40 ).

Figures

FIGURE 40. Distribution map of Oides geiseri (pink dots), and O. tarsata (red dots), O. thibettana (orange dots), O. tibiella (blue dots), and O. ustulaticia (green dots).

FIGURE66. Diagnostic characters of Oides thibettana Jacoby.66A.Antenna, male; 66B. Antenna, female; 66C.Penis, dorsal view; 66D. Penis, lateral view; 66E. Penis, ventral view; 66F. Endophallic sclerite following eversion of internal sac; 66G. Same, lateral view; 66H. Abdominal ventrite VIII; 66I. Spermatheca.