Oides duporti Laboissière

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) : 45-48

Oides duporti Laboissière

( Figs 30A–30C , 31)

Oides duporti Laboissière, 1919: 160 ( Vietnam) ; Weise, 1924: 3 (catalogue); Wilcox, 1971: 8 (catalogue); Samoderzhenkov, 1992: 108 (catalogue).

Types. Lectotype ♀ ( ZMUH), here designated, labeled: “ Cho Ganh / 5 1914 [h, w] // Type [h, w, red letters] // Oides / Duporti m. / 1919 [h, w] // Le Moult Vend. / via Reinbek / Eing Nr. 1, 1957 [p, w]”. Paralectotype: 1♀ (ZMUH): “Choganh / LD. 4. 1914 [h, w] // Type [p, w, red letters] // Le Moult Vend. / via Reinbek / Eing Nr. 1, 1957 [p, w]”.

Redescription. Length 14.3–15.0 mm, width 8.0– 9.1 mm. General color ( Figs 30A–30C ) yellow; antennae yellow, antennomeres VII–XI dark brown; elytra with five pairs of black spots, arranged into three tranverse rows: two pairs near base, two pairs at middle, one pair near apex; tarsi black. Antennae filiform in males (Fig. 31A), antennomeres IV longest, III–VII slightly serrate, VIII–X elongate, length ratios of antennomeres I–XI 1.0: 0.5: 1.0: 1.1: 1.0: 1.0: 1.0: 0.8: 0.7: 0.7: 0.8, length to width ratios of antennomeres I–XI 2.9: 1.7: 3.2: 3.5: 3.2: 3.0: 3.2: 2.9: 2.5: 2.5: 2.9; similar in females (Fig. 31B), length ratios of antennomeres I–XI 1.0: 0.6: 1.0: 1.2: 1.0: 1.0: 1.0: 0.9: 0.7: 0.7: 0.9, length to width ratios of antennomeres I–XI 2.7: 1.9: 3.5: 4.0: 3.5: 3.3: 3.5: 3.0: 2.6: 2.5: 3.6. Pronotum transverse, 2.4 wider than long, disc convex, without reticulate microsculpture but with dense, coarse punctures; baso-lateral angles obtuse, apico-lateral angles rectangular; lateral margin rounded; apical margin moderately concave. Elytra elongate oval, widest at middle, 1.4x longer than wide, disc with dense, coarse punctures; moderately convex, epipleurae near lateral margins, located 9/10 distance between suture and lateral margins. Penis (Figs 31C–31E) relatively slender, 6.7x longer than wide; parallel-sided; bifurcate at apical 1/5, lateral processes directed mesally and apically, apices of lateral processes rounded, apices approximate; tectum small and apially tapering; slightly curved in lateral view, apices rounded; ventral surface with shallow, broad but apically narrowed notch at apex; endophallic sclerite complex comprising one pair of elongate sclerites at base, weakly sclerotized. Apical margin of abdominal ventrite V in female (Fig. 31I) truncate and with small, rounded process at middle. Gonocoxae (Fig. 31F) separated and longitudinal, medially curved, apices rounded and with dense, short setae. Ventrite VIII (Fig. 31G) transverse, apical margin medially projecting but depressed at middle, with dense, long and short setae along apical margin; spiculum short. Receptacle of spermatheca (Fig. 31H) as wide as pump, connected to pump, basally narrowed; pump strongly curved; proximal spermathecal duct short, apically broadened.

Diagnosis. Specimens of O. duporti Laboissière , O. leucomelaena Weise , and O. multimaculata Pic are characterized by large black spots on the elytra (larger than yellow area between spots). However, O. multimaculata is easily recognized the broadly oval body shape and elytra with four black spots near the lateral margins (elongate oval body shape and elytra with three black spots near the lateral margins in others). Oides duporti can be distinguished from O. leucomelaena by the yellow pronotum and scutellum (one pair of black spots laterally on the pronotum and black scutellum in O. leucomelaena ) and by black spots on elytra separated by transverse yellow stripes (separated by oblique yellow stripes in O. leucomelaena ). Aedeagi of male O. duporti differ from others in possessing an extremely elongate penis, 6.7x longer than wide (broad penis in O. leucomelaena , 4.9x longer than wide; elongate penis in O. multimaculata , 6.0x longer than wide), small and apically tapering tectum (elongate and parallel-sided tectum in O. multimaculata ), rounded lateral processes (hooked lateral processes in O. multimaculata ), ventral surface with shallow and broad notch (membranous area inside ventral surface in O. leucomelaena ; with deep and basally narrowed notch in O. multimaculata ), and one pair of elongate endophallic sclerites (one pair of small endophallic sclerites in O. leucomelaena ; lacking endophallic sclerites in O. multimaculata ).

Other specimens examined. LAOS. Bolikhamsai: 1 ♂ ( RBCN), Ban Nape-Kaew Nua pass, 18.IV.–1.V. 1998, 600m., N 18°22,3’ E 105°09,1’, leg Sausa. MYANMAR. Madelay: 2 exs. ( HHCR), Kyaukpadanng, 6–28.VI.2009, leg Li Jingke; VIETNAM. 1♀ ( SEHU), Tam Dao, 1992, leg. A. Tanaka; Há Giang: 1♂ ( TARI), Mèo Vac, 17.VI.2014, leg. Y.-F. Hsu; 1♀ ( TARI), same but with “ 17.IX.2014 ”.

Distribution. Laos, Myanmar, Vietnam. The records from China should refer to O. leucomelaena .

Figures

FIGURE30.Habitus of Oides duportiLaboissière,O. leucomelaena Weise,and O.multimaculata Pic. 30A.O. duporti, dorsal view; 30B. Same, ventral view; 30C. Same, lateral view; 30D. O. leucomelaena, dorsal view; 30E. Same, ventral view; 30F. Same, ventral view; 30G.O. multimaculata, dorsal view; 30H. Same, ventral view; 30I.Same, lateral view.