Oides vexilla Duvivier

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) : 112-113

Oides vexilla Duvivier

( Figs 59E–59G , 69 )

Oides vexilla Duvivier, 1884c: 134 ( Philippines: Luzon); Weise, 1924: 7 (catalogue); Wilcox, 1971: 18 (catalogue); Kimoto, 1990: 221 (catalogue); Medvedev, 1995: 9 ( Philippines: Leyte Island).

Oides tibialis Duvivier, 1884c: 135 ( Philippines: Siagao island); Weise, 1924: 6 (catalogue); Kimoto, 1990: 221 (catalogue). New synonymy

Types. Oides vexilla . Holotype ♀ (IRSB, by monotypy), labeled: “ ♀ [p, w] // Luzon / Semper [p, w] // Coll. Chapuis [p, w] [both labels glued on the following label] // Coll. R. I. Sc. N. B. / Philippines [p, y] // Adorium / vexillum / Luzon Chp [h, w] [glued on the following label] // A. Duvivier det. [p] 1884 [h, w] // TYPE [p, r] // cf. Ann. Soc. Ent. Belg. / C. R. p. CXXXIV, 28, 1884 [h, w] // V. Laboissière vid, 1939: [p] / Oides / vexilla Duv / Type [h, w] // A. VACHON—[p] vidit V-1976 [h w]”.

Oides tibialis . Holotype ♂ (IRSB, by monotypy), labeled: “(male aedeagus gluded on the card) // ♂ [p, w] // Siagao / Semper [p, w] // Coll. Chapuis [p, w] (both labels glued on the following label) // Coll. R. I. Sc. N. B. / Philippines [p, y] // Adorium / Tibiale Chp / Siagao [h, w] (glued on the following label // A. Duvivier det. [p] 1884 [h, w] // TYPE [p, r] // cf. Ann. Soc. Ent. Belg. / C. R. p. CXXXV, 28, 1884 [h, w] // V. Laboissière vid, 1939: [p] / Oides / tibialis Duv / Type [h, w] // Oides tibialis Duv. / aedéotype [h] / A. VACHON—det. [p] V.1976. [h, w]”.

Redescription. Length 8.5–8.7 mm, width 5.1–5.5 mm. General color ( Figs 59E–59G ) reddish brown; antennomeres IV–VII and apical half of III, and outer margins of tibiae black. Antennae filiform in males ( Fig. 69A ), VIII-X elongate, length ratios of antennomeres I–XI 1.0: 0.5: 1.1: 1.2: 1.0: 1.0: 1.0: 0.8: 0.8: 0.8: 1.1, length to width ratios of antennomeres I–IX 2.9: 1.8: 3.7: 3.4: 3.1: 2.9: 2.9: 2.6: 3.0: 3.1: 4.9; similar in females ( Fig. 69B ), length ratios of antennomeres I–XI 1.0: 0.6: 1.2: 1.3: 1.1: 1.1: 1.0: 0.9: 0.9: 0.8: 1.0, length to width ratios of antennomeres I–IX 2.6: 2.0: 3.6: 3.7: 3.0: 2.8: 3.0: 2.7: 2.9: 2.8: 3.6. Elytra oblong, widest at middle, 1.3x longer than wide, disc without reticulate microsculpture, but with dense punctures; moderately convex, epipleurae near lateral margins, located 9/10 distance between suture and lateral margins. Penis ( Figs 69C–69E ) elongate but comparatively wide; 4.9x longer than wide, parallel-sided, apically tapering from apical 1/4; tectum elngate; straight in lateral view, apices narrowly rounded; ventral surface with deep and subapically broadened notch from apex to middle; endophallic sac without sclerites. Apical margin of abdominal ventrite V in female slightly concave. Gonocoxae reduced. Ventrite VIII ( Fig. 69F ) transverse and well sclerotized; apical margin rounded, depressed medially, with several long setae along apical margin; one median longitudinal internal ridge from apical 1/3 to basal 1/3; spiculum long and wide. Receptacle of spermatheca ( Fig. 69G ) as wide as pump, connected to pump; pump strongly curved; proximal spermathecal duct separated from receptacle, extremely elongate, apical half covered by sparse minute teeth.

Diagnosis. Members of this species belong to the Oides celebensis species group. They differ in the reddish yellow color and the entirely yellow antennomeres XI. In males, the aedeagi of this species is characterized with the short tectum and deep ventral notch.

Other specimens examined. PHILIPPINES. Mindanao: 1♀ ( MNHUB), 28.XII.1914; Siagao island: 4♂♂, 1♀ ( MNHUB), 14.VII.1916; 2♂♂ ( MNHUB), Surigao.

Distribution. Philippines.

Figures

FIGURE 59. Habitus of Oides quadriguttata Duvivier and O. vexilla Duvivier.59A. O. quadriguttata, holotype, dorsal view; 59B. Colora variation (O. sternalis), dorsal view; 59C. Same, ventral view; 59D. Same, lateral view; 59E. O. vexilla, dorsal view; 59F.Same, ventral view; 59G. Same, lateral view.

FIGURE 69. Diagnostic characters of Oides vexilla Duvivier. 69A. Antenna, male; 69B. Antenna, female; 69C. Penis, dorsal view; 69D.Penis, lateral view; 69E.Penis, ventral view; 69F.Abdominal ventrite VIII; 69G.Spermatheca.