Oides maculosa Gahan
Creators: name: Lee, Chi-Feng
name: Beenen, Ron
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Oides
Oides maculosa

description: Oides maculosa Gahan
(Figs 28G– 28I, 53)
Oides maculosa Gahan, 1891: 457 (Bangladesh: Sylhet); Maulik, 1936: 112 (redescription); Wilcox, 1971: 12 (catalogue).
Types. Lectotype ♂ (BMNH), here designated, labeled: “[aedeagus glued on the card] // [broken legs and antenna glued on the card] // Type [p, w, circle label with red border] // SYN- / TYPE [p, w, circle label with blue border] // (E. Ind) M e Cld [p, w] // Oides / maculosa, / Gahan / Type [h, w] // dissected 12-1975 [h] / A. VACHON—dab. [p, w]”. Paralectotype: 1♀ (BMNH): “58 / 60 [h, g, circle label] // (E. Ind) M e Cld [p, w] // SYN- / TYPE [p, w, circle label with blue border]”.
Redescription. Length 13.7–17.8 mm, width 8.8–10.8 mm. General color (Figs 28G– 28I) yellow; pronotum with one pair of black spots at sides; scutellum black; most areas of metasternum black; elytra with seven pairs of black spots, arranged into three transverse rows: in first row one pair and a solitary spot near scutellum; in second row two pairs and in third row three solitary spots; abdominal ventrites I–IV with one pair of black spots at sides, ones on ventrite I largest, smaller towards apical ones. Antennae filiform in males (Fig. 53A), 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: 0.9: 0.9: 0.9: 0.7: 0.7: 0.9, length to width ratios of antennomeres I–XI 2.5: 1.6: 2.8: 2.9: 3.0: 2.9: 2.7: 2.8: 2.5: 2.7: 3.9; similar in female. Pronotum transverse, 2.2 wider than long, disc convex, sides flattened, with reticulate microsculpture and dense, coarse punctures; baso-lateral angles broadly rounded, apico-lateral angles narrowly rounded; lateral margin rounded; apical margin moderately concave. Elytra elongate oval, widest at middle, 1.3x longer than wide, disc with reticulate microsculpture and dense, fine punctures; moderately convex, epipleurae near lateral margins, located 9/10 distance between suture and lateral margins. Penis (Figs 53B–53D) relatively wider, 5.2 longer than wide; parallel-sided; tectum medially divided into two rounded sclerites; slightly curved in lateral view, apices angular, with deep notch between dorsal and ventral surface; ventral surface with broad but apically narrowed notch from apex to apical 1/3; endophallic sclerite complex comprising one erected sclerite at base, apical margin truncate, hooked in lateral view. Apical margin of abdominal ventrite V in female concave and sinuate. Gonocoxae (Fig. 53E) separated and longitudinal, inner margin with one angular process at basal 1/3, apices narrowly rounded and with dense setae. Ventrite VIII (Fig. 53F) transverse, apical margin broadly rounded and moderately depressed at middle, with extremely dense setae; spiculum short; ventral surface well sclerotized. Receptacle of spermatheca (Fig. 53G) as wide as pump, connected to pump, basally narrowed; pump strongly curved; proximal spermathecal duct as wide as receptacle, with sclerotized area at base, covered with transverse grooves; membranous areas slender.
Diagnosis. Adults of Oides maculosa are similar to those of O. coccinelloides, O. decempunctata, and O. duodecimpunctata in possessing small, black spots on the elytra arranged into three transverse rows. They differ from others in possessing one pair of lateral black spots at the pronotum (entirely yellowish brown pronotum in O.
decempunctata) and black scutellum (yellow scutellum in O. decempunctata and O. coccinelloides), three pairs of black spots near apices of the elytra (only one pair in O. decempunctata; two pairs in O. coccinelloides and O. duodecimpunctata), and less convex elytra (epipleurae located at 9/10 distance between suture and lateral margins; strongly convex elytra in O. coccinelloides, epipleurae located at 3/5 between suture and lateral margins; moderately convex elytra in O. decempunctata, epipleurae located at 5/7 between suture and lateral margins). In males, the aedeagi of O. maculosa differ from those of other species in possessing bifurcate and rounded tectum (lacking tectum in O. coccinelloides; recurved tectum in O. decempunctata; small and apically tapering tectum in O. duodecimpunctata), deep and broad notch at ventral apex (membranous apex in O. decempunctata; deep and narrow notch at ventral surface of penis in O. coccinelloides), and one large, hooked, and erect sclerite (one elongate and parallel-sided endophallic sclerite in O. duodecimpunctata; lacking endophallic sclerites in O. decempunctata; one small, hooked, and erect endophallic sclerite in O. coccinelloides).
Other specimens examined. INDIA. Assam: 1♂ (BMNH), leg. W. F. Badgley, B.M. 1906-185; 1♀ (BMNH), coll. Atkinson, B.M. 92-3.
Distribution. Bangladesh, India (Fig. 25).
description: Published as part of Lee, Chi-Feng & Beenen, Ron, 2017, Revision of the Palaearctic and Oriental species of the genus Oides Weber, 1801 (Coleoptera: Chrysomelidae: Galerucinae) in Zootaxa 4346 (1) on pages 83-85, DOI: 10.11646/zootaxa.4346.1.1, http://zenodo.org/record/1115692