Doryscus niger Medvedev & Sprecher-Uebersax 1998
Creators: name: Lee, Chi-Feng
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Doryscus
Doryscus niger

description: Doryscus niger Medvedev & Sprecher-Uebersax, 1998
(Figs 9 F, 12)
Doryscus niger Medvedev & Sprecher-Uebersax, 1998: 34.
Types (n= 3). Holotype ♂ (NMHB), labeled: “ Pothana 1900- / Landrung 1600m / 7.V.1984 [p, w] // W-Nepal / C. Holzschuh [p, w] // HOLOTYPUS [p] / Doryscus / niger m. [h] / L.N.Medvedev det.95 [p, r]. Paratypes: 1♂ (NHMB), labeled: “Landrung- 1600- / Pothana 1900m / 6.VI.1984 [p, w] // W-Nepal / Modi Khola / C. Holzschuh [p, w] // PARATYPUS / L.N.Medvedev det.95 [p, r]”; 1♀ (NMHB), labeled: “ Gangjwal / 2500m 6–7.V.89 / M. Brancucci [p, w] // Nepal Bagmati / Sindhupalchok [p, w] // Doryscus / niger / Medvedev [h, w] // PARATYPUS / L.N.Medvedev det.95 [p, r]”.
Redescription. Length 3.7–4.3 mm, width 1.4–1.8 mm. General color black, but mouth parts, antennae, apices of femora, bases of tibiae, and tarsi paler (Fig. 9 F). Antennomere I slightly swollen in males (Fig. 12 A), length ratios of antennomeres I–XI 1.0: 0.4: 0.6: 0.6: 0.6: 0.6: 0.7: 0.7: 0.6: 0.6: 0.7, length to width ratios of antennomeres I–XI 3.0: 1.5: 2.5: 2.5: 2.6: 2.6: 2.9: 2.9: 3.0: 2.7: 3.8; antennomere I more slender in females (Fig. 12 B), length ratios of antennomeres I–XI 1.0: 0.4: 0.6: 0.6: 0.7: 0.7: 0.7: 0.7: 0.6: 0.6: 0.8, length to width ratios of antennomeres I–XI 3.7: 1.8: 2.7: 2.8: 2.9: 2.7: 2.7: 2.8: 2.9: 2.7: 3.6. Elytra 1.8x longer than wide, surface with erect, pale, dense, and elongate setae; and fine punctures. Apical margin of last abdominal ventrites with two shallow incisions in males (Fig. 12 G); but widely rounded in females (Fig. 12 H). Penis (Figs 12 C–12D) slender, 6.1 x longer than wide, gradually narrowed towards apex; apex of dorsal surface with deep notch; apex of ventral surface with shallow notch; almost straight in lateral view, apex with deep notch between dorsal and ventral surface; ventral surface smooth. Endophallic spiculae long, about 0.6 x as long as penis, apex trilobed, median lobe medially swollen, with dense lateral setae subapically, lateral lobes slender; eight pairs basal horn-like spiculae, basal pair longest, apically shortened. Gonocoxae (Fig. 12 E) extremely slender, 6.2 x longer than wide, sides narrowed at apical 1/10 and 3/10; apices narrowly rounded; inner margins approximate from apex to midpoint, apex with nine setae; extremely slender from half to midpoint but abruptly widened at base. Ventrite VIII (Fig. 12 F) well sclerotized; spiculum elongate; apex square, apical margin truncate, with dense short setae; disc with several long setae at sides. Receptacle of spermatheca (Fig. 12 I) moderately swollen, narrowly separated from pump; pump strongly curved but not apically narrowed; proximal spermathecal duct slender, shallowly projecting into receptaculum.
Differential diagnosis. See diagnosis of Doryscus nepalensis sp. nov.
Distribution. Only known from type specimens from Nepal.
description: Published as part of Lee, Chi-Feng, 2017, Revision of the genus Doryscus Jacoby (Coleoptera: Chrysomelidae: Galerucinae), pp. 1-43 in Zootaxa 4269 (1) on pages 23-25, DOI: 10.11646/zootaxa.4269.1.1, http://zenodo.org/record/581259