Oides andrewesi 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) : 9-11

Oides andrewesi Jacoby

( Figs 1D–1F , 4 )

Oides andrewesi Jacoby, 1900: 127 ( Myanmar) ; Weise, 1924: 2 (catalogue); Wilcox, 1971: 3 (catalogue); Vachon, 1977: 12 (removed from synonymy with O. bipunctata ); Vachon, 1980a: 15.

Oides bipunctata var. andrewesi: Maulik, 1936: 109 . Misidentification

Types. Lectotype ♂ (BMNH), here designated, labeled: “Birmah. / Ex Andrewes [h, w] // Oides / Andrewesi Jac. [h, b] // SYN- / TYPE [p, w, circle label with blue border] // Type / H. T. [p, w, circle label with red border] // Jacoby Coll. / 1909-28 a. [p, w] // Oides andrewesi Jacoby 1900 / ♂ dissected on February [h] / A. VACHON—det. [p] 1974 [h, w]”. Paralectotypes: 1♂ (BMNH): “[male adeagus glued on the card] / Tharrawaddy, / Burma. / 1902.994 // Oides / andrewesi / Jac. / Cotype [h, w] // SYN- / TYPE [p, w, circle label with blue border]”; 1♀ (BMNH): “Birmah [h, w] // Jacoby Coll. / 1909-28 a [p, w] // SYN- / TYPE [p, w, circle label with blue border]”; 1♀ (BMNH): “ Burma [h, w] // SYN- / TYPE [p, w, circle label with blue border] // H.E. Andrewes / Bequest. / B.M. 1922-221. [p, w]”.

Redescription. Length 11.8–11.9 mm, width 6.7–7.2 mm. General color black; antennae yellow, antennomeres IV–XI dark brown; pronotum, elytra and scutellum reddish brown, elytra with one pair of large black spots at apical 1/3. Antennae filiform in males ( Fig. 4A ), antennomeres IV longest, VIII–X elongate, length ratios of antennomeres I–XI 1.0: 0.7: 1.0: 1.3: 1.0: 0.8: 0.8: 0.9: 0.8: 0.8: 1.1, length to width ratios of antennomeres I–XI 2.1: 1.7: 2.0: 2.6: 2.0: 1.7: 1.7: 1.7: 1.7: 1.9: 2.5; shorter in female ( Fig. 4B ) length ratios of antennomeres I–XI 1.0: 0.5: 0.8: 1.0: 0.7: 0.7: 0.6: 0.6: 0.6: 0.6: 0.9, length to width ratios of antennomeres I–XI 2.7: 1.8: 2.3: 3.1: 2.1: 2.1: 2.0: 1.9: 1.7: 1.9: 3.0. Pronotum transverse, 2.1x wider than long, with lateral fovea, disc with reticulate microsculpture and fine punctures, baso-lateral angles angular, apico-lateral angles narrowly rounded and recurved, lateral margins rounded, apical margin concave. Elytra oblong, widest at middle, 1.4x longer than wide, disc with reticulate microsculpture and dense, coarse punctures; moderately convex; epipleurae near lateral margins, located 9/10 distance between suture and lateral margins, strongly broadened at basal 1/5, apically narrowed and abbreviated at middle; humeral calli prominent, with depression posterior to calli. Tarsomeres I of front and middle legs swollen in males. Penis ( Figs 4C–4E ) slender; parallel-sided; subapically bifurcate, lateral process directed mesal in apex, subapically narrowed, apices of lateral processes rounded, and near each other; tectum reduced; slightly curved near base in lateral view, apices widely rounded; ventral surface with shallow and medially broadened notch at apex; endophallic sac without sclerites. Apical margin of abdominal ventrite V in female broadly rounded, slightly depressed at middle. Gonocoxae reduced. Ventrite VIII ( Fig. 4F ) transverse, apical margin bifurcate, apical processes broadly rounded, with dense setae along apical margin; spiculum long. Receptacle of spermatheca ( Fig. 4G ) as wide as pump, connected to pump; pump strongly curved, apically narrowed; proximal spermathecal duct membranous, slender and short.

Diagnosis. Adults of O. andrewesi Jacoby and O. palleata (Fabricius) are characterized by their dull, flattened elytra. However, O. andrewesi can be easily distinguished from O. palleata by its black venter. The aedeagi of adult males of O. andrewesi are similar to those of O. affinis in possessing relatively shorter lateral processes but differing in lacking a tectum (present in O. affinis ) and in the gradually narrowed bases of the lateral processes (obruptly narrowed bases in O. andrewesi ).

Distribution. Only known from type specimens from Myanmar.

Figures

FIGURE 4. Diagnostic characters of Oides andrewesi Jacoby. 4A. Antenna, male; 4B. Antenna, female; 4C. Penis, dorsal view; 4D. Penis, lateral view; 4E. Penis, ventral view; 4F.Abdominal ventrite VIII; 4G. Spermatheca.

FIGURE1. Habitus of Oides affinis Jacoby and O. andrewesi Jacoby. 1A. O. affinis, dorsal view; 1B. Same, ventral view; 1C. Same, lateral view; 1D. O. andrewesi, dorsal view; 1E. Same, ventral view; 1F. Same, lateral view.