Oides tibiella Wilcox

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) : 108-110

Oides tibiella Wilcox , valid species

( Figs 67 )

Oides tibialis Laboissière, 1927 (nec Duvivier, 1884): 40 ( Vietnam).

Oides tibiella Wilcox, 1971: 17 (new replacement name for Oides tibialis Laboissière, 1927 ); Kimoto, 1989: 39 (as synonym of O. tarsata , misidentification).

O. tarsata: Samoderzhenkov, 1992: 110 ( Vietnam) ; Beenen, 2010: 491 (catalogue). Misidentification

Types. Lectotype ♂ (MNHN), here designated, labeled: “ TONKIN / CHO-GANH / L. DUPORT [p, w] // MUSEUM PARIS [p] / C. FLEUTIAUX [h, w] // Cotype [p, r] // [aedeagus glued on the card]”. Paralectotypes: 1♂ (MNHN), same data as holotype; 1♀ (MNHN): “Cho-Ganh / Tonkin / L. Duport [h, w] // ♀ [p, w] // MUSEUM PARIS [p] / V. Laboissière / 1927 [h, w] // COTYPE [p, w, red letters] // Oides / tibialis m. [h] / V. Laboissière— Dét. [p, w] // Oides tibiella Wilcox 1972 [h] / A. VACHON—det. [p] / 1.1976 [h, w]”; 1♀ (IRSB): “ TONKIN / CHO-GANH / L. DUPORT [p, w] [glued on the following label] // Coll. R. I. Sc. N. B. [p] / Nord / Vietnam [h, y] / / Oides / tibialis m. / Paratype [h] / V. Laboissière—Dét. [p, w] // Para- / type [p, o] // cf. Ann. Soc. Ent. / France, XCVI, 1927, p. 40. [h, w] // O. tibialis Laboiss., 1927 / (non O. tibialis Duv., 1884 ) [h, w] // Oides tibiella Wilcox / 1972 / non tibialis Labois. [h] / A. VACHON det [p] V.1976 [h, w]”.

Redescription. Length 12.3–12.4 mm, width 9.4–9.5 mm. General color yellow; antennomeres VI–XI, thoracic and abdominal ventrites black; legs yellowish but most parts of femora dark brown. Antennae filiform in males ( Fig. 67A ), antennomeres III longest, III–V slightly serrate, VI–XI elongate, length ratios of antennomeres I–XI 1.0: 0.5: 1.1: 1.0: 1.0: 0.9: 0.9: 0.9: 0.8: 0.7: 0.8, length to width ratios of antennomeres I–IX 2.6: 1.9: 3.5: 3.2: 3.0: 2.7: 2.9: 2.7: 2.5: 2.5: 3.1; shorter in female ( Fig. 67B ), length ratios of antennomeres I–XI 1.0: 0.5: 0.8: 0.9: 0.7: 0.7: 0.8: 0.7: 0.6: 0.6: 0.7, length to width ratios of antennomeres I–IX 3.0: 1.9: 3.4: 3.4: 2.7: 2.7: 3.0: 2.7: 2.2: 2.2: 3.2. Pronotum transverse, 2.2x wider than long, disc without fine punctures, basolateral angles rounded, apico-lateral angles rectangular, apical margin strongly concave. Elytra oval, widest near base, 1.1x longer than wide; moderately convex, epipleurae located at 7/10 distance between suture and lateral margins. Penis ( Figs 67C–67E ) elongate, 6.0x longer than wide; parallel-sided; apically bifurcate, apices approximate; tectum with deep notch at middle; slightly curved in lateral view, apex narrowly rounded; ventral surface membranous inside apex, with elongate membranous area extending from apex to near base; endophallic sclerite complex comprising one pair of lateral sclerites, dorso-ventrally flattened, with erect process at middle, base connected with dorsal surface of penis. Apical margin of abdominal ventrite V in female rounded. Gonocoxae (Fig. F) separate, with kidney shaped. Ventrite VIII ( Fig. 67G ) longitudinal, medially depressed at apical margin, with dense, short setae along apical margin, much denser at medial area; spiculum long and well sclerotized. Receptacle of spermatheca ( Fig. 67H ) as wide as pump, connected to pump, basally narrowed; pump strongly curved; proximal spermathecal duct short, covered with transverse grooves at apex.

Variation. Specimens of this species are extremely variable in the forms of the antennae and male aedeagi. Some specimens possess short antennae (length to width ratios of antennomeres I–IX 2.6: 1.8: 2.6: 3.0: 2.6: 2.4: 2.0: 1.6: 1.6: 1.5: 2.0), as in O. maculata , but differ in possessing black mesothoracic ventrites, metepisterna, and abdomen.

Diagnosis. This species belongs to the Oides tarsata species group. For differences between species see diagnosis of Oides geiseri sp. nov.

Other specimens examined. LAOS. Balikhamxai: 3 exs. ( NHMB), Ban Nape (8km NE), 600 m, 18°21’N 105°08’E, 1–18.V.2001, leg. Pacholátko; Houa Phan: 1♂ ( NMPC), Ban Saluei→Phou Pane Mt., 1340–1870 m, 15.IV.–15.V.2008; 1♀ ( TCHU), same locality, 25–28.VI.2004; 1 ex. ( NHMB), same locality, 10.V.–16.VI.2009, leg. M. Brancucci & local coll.; 1♂ ( TCHU), Phou Pane Mt., 1500–1800 m, 10–13.IV.2004, leg. T. Niisato; 1♀ ( TCHU), same locality, 16.IV.–15.V.2004; 1 ex. ( NHMB), same locality, 1–16.VI.2009, leg. M. Brancucci; 4 exs. ( JBCB), 25km SE Vieng Xai, Ban Kangpabong env., 20°19’N 104°25’E, 14–18.V.2001, J. Bezděk; Luang Namtha: 1 ex. ( NMW), 25km SE Muang Sing, 14–22.VI.1996, leg. Schillhammer; Phongsaly: 1 ex. ( NHMB), Ban Sano Mai, 21°21’N 102°03’E, 1150 m, 19–26.V.2004, leg. P. Pacholátko; 1 ex. ( NHMB), Phongsaly env., 21°41–42’N 102°06–08’E, 1500 m, 28.V.–20.VI.2003, leg. Pacholátko; 2 exs. ( NHMB), same but with “leg. Brancucci”; 4 exs. ( NHMB), same locality, 6–17.V.2004, leg. P. Pacholátko; 1 ex. ( NHMB), same but with “leg. M. Brancucci”; Xieng Khouang: 2♂♂, 1♀ ( TCHU), Ban Phadkhad, Nong Het, 20.V.2004, leg. T. Niisato; 1♂, 3♀♀ ( TCHU), same locality, III.–IV.2006; 1♀ ( TCHU), Ban Nyodrien, Phu Xane, 2200 m, 15.V.2004; THAILAND. 1♂ ( TCHU), Doi Saket, 18.VI.1989; 1♂, 1♀ ( SEHU), Meo Village, 20–28.IV.1982, leg. M. Ito; 1 ex. ( NHMB), Soppong-Pai, 1800 m, 1–6.V.1991, leg. Pacholátko; Chiang Mai: 1♀ ( SEHU), Doi Pui, 5.V.1983, leg. M. Takakuwa; 1♀ ( SEHU), Doi Suthep, 25.IV.1982, leg. M. Ito; 1♀ ( SEHU), Phuping Palace, 4.V.1980, leg. K. Ikeda; 1♀ ( SEHU), same locality, 25.V.1983, leg. H. Akiyama; 1♀ ( SEHU), same locality, 31.V.1983, leg. K. Ikeda; 1♀ ( SEHU), same locality, 3.V.1984, leg. E. Endo; 1♀ ( SEHU), same locality, 20.V.1985, leg. Y. Komiya; 1 ex. ( NHMB), San Pakia, 19°19’N 98°50’E, 1400 m, 1–15.V.1998, leg. V. Kubáň; Loei: 1 ex. ( TARI), Phu Hiu Roung Kla N.P., 1200–1600 m, 15– 17.IV.2008, leg. Y.-F. Hsu; Mae Hong Son: 1 ex. ( NHMB), Ban Huai Po, 1800 m, 30.IV.–14.V.1991, leg. J. Farkač; 1♀ ( JBCB), same locality, 9–16.V.1991, leg. J. Horák; VIETNAM. 2 exs. ( NHMB), Annam, 1927, leg. Dussault; 10♂♂, 8♀♀ (5♂♂, 6♀♀: MNHUB; 1♂: NMPC; 2♂♂, 2♀♀: SDEI; 2♂♂: SMNS), Montes Mauson, 2–3000’, IV.–V., leg. H. Fruhstorfer; 2 exs. ( NHMB), Tam Dao N.P., 15.V.–16.VI.1991, leg. E. Jendek; 2♂♂ ( SMNS) same locality, 12–22.IV.1981, leg. L. Medvedev et al.; 1♂ ( MCSN), same locality, 12–22.IV.1986, leg. L. Medvedev et al.; 1 ex. ( MCSN), same locality, 12–24.V.1989, leg. Pacholátko; 2 exs. ( NHMB), same locality, 1–8.VI.1996, leg. Pacholátko & Dembický.

Distribution. Laos, Thailand, Vietnam ( 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).

FIGURE 67. Diagnostic characters of Oides tibiella Wilcox. 67A. Antenna, male; 67B. Antenna, female; 67C. Penis, dorsal view; 67D.Penis, lateral view; 67E.Penis, ventral view; 67F.Gonocoxae; 67G.Abdominal ventrite VIII; 67H.Spermatheca.