Zeugophora (Pedrillia) flavithorax, Li & Liang, 2020

Li, Kai-Qin & Liang, Hong-Bin, 2020, Four new species and two new records of genus Zeugophora (Coleoptera, Megalopodidae, Zeugophorinae) from China, ZooKeys 975, pp. 51-78 : 51

Zeugophora (Pedrillia) flavithorax sp. nov. Figures 29-32 , 33-37 , 46-47

Specimens ecamined.

Holotype: male, China, Guizhou, Leishan, Leigong Shan National Nature Reserve, 26.36966°N, 108.18724°E / 1367 m, 2019.vii.14, Kaiqin Li coll. / Holotype, Zeugophora (Pedrillia) flavithorax sp. nov., des. by K.Q. Li & H.B. Liang, 2020 [red label]. Paratypes (1 male and 1 female): 1 female, same data as holotype but paratype Zeugophora (Pedrillia) flavithorax sp. nov., des. by K.Q. Li & H.B. Liang, 2020 [yellow label]; 1 male (IZCAS), China, Guizhou, Leishan, Leigong Shan National Nature Reserve, 26.36966°N, 108.18724°E / 1367 m, 2019.vii.15, Kaiqin Li coll. / Paratype Zeugophora (Pedrillia) flavithorax sp. nov., des. by K.Q. Li & H.B. Liang, 2020 [yellow label].

Diagnosis.

Head brown except occiput black, antennae, pronotum, elytra, prosternum, abdominal ventrites and legs brown, mesoventrite and metaventrite black, the pubescence of surfaces slightly yellow and transparent; median lobe short and broad, slightly curved in lateral view, lateral sides thin, apex slightly broad, middle of apical margin projecting and sharp; base of coxite with one elongate sclerotized area.

Description.

BL = 4.0-4.2 mm, BW = 1.6-1.8 mm. Head brown except occiput black, antennae, pronotum, elytra, prosternum, abdominal ventrites, and legs brown, mesoventrite and metaventrite black.

Head: eyes prominent, inner margin with distinct canthus; vertex coarsely and densely punctate and pubescent; occiput strongly constricted; frons finely punctate and pubescent; fronto-clypeal suture arching backwards centrally; clypeus rectangular, width 2.1 × that of length, anterior margin and lateral with punctures and pubescence; labrum rectangular, narrower than clypeus, center of anterior portion emarginate, anterior and lateral portion with punctures and pubescence; antennae extended to exceed the humeri, antennomere 1 long, anterior portion slightly swollen, antennomere 2 short, half-length of antennomere 1, antennomere 3 slightly shorter than antennomere 1, antennomere 4 as long as antennomere 1, antennomeres 5-11 slightly thick, antennomere 5 shorter than antennomere 4, antennomere 6 slightly shorter than antennomere 5, antennomeres 7-10 slightly shorter than antennomere 6, antennomere 11 as long as antennomere 6, acute at apex, antennomeres 1-4 sparely punctate and pubescent, antennomeres 5-11 densely punctate and pubescent.

Thorax: PW/PL = 1.2-1.3; anterior margin slightly flattened; posterior margin arching backwards in the center; length of anterior margin nearly equal to posterior margin; anterior and posterior groove shallow; lateral margin gradually expanding from anterior angle to the middle, then constricted, lateral tubercle projecting, narrow and blunt; disc slightly convex, coarsely punctate and pubescent. Scutellum triangular, apical margin slightly emarginate, sparsely punctate and pubescent.

Elytra: EL/EW = 1.5-1.7; elytral humeri slightly projecting antero-laterally, humeral groove shallow; lateral margin gradually expanding from anterior to posterior, the elytra widest behind the middle, apex rounded; disc slightly convex, weakly depressed at basal one third, coarsely punctate and pubescent; elytra base finely punctate and pubescent; suture with one or two rows of punctures and pubescence; epipleura narrow, two rows of punctures and pubescence at base and one row at apex.

Abdomen and legs: underside sparsely punctate and pubescent. Legs moderately long, femora robust. Pygidium moderately long, punctate, and pubescent, apical portion exposed; apical margin of last abdominal ventrite slightly prominent in male (slightly emarginate in female). Median lobe weakly sclerotized, short and broad, slightly curved in lateral view, dorso-central portion entirely membranous, lateral sides thin, apex slightly broad, middle of apical margin projecting and sharp; median struts rod-shaped, widely separated from each other, approximately 1.8 × as long as median lobe; base of tegmen V-shaped, tegminal ring sub-oval, paramere sub-trapezoid and apical margin slightly rounded, apical margin with long setae; endophallus membranous, with paired granulated and weakly sclerotized area. Spiculum long Y-shaped, apical margin slightly flattened. Ovipositor long, sub-rectangular, base slightly broader than apex, divided into two vaginal palpi, each side with one baculus, extending from the base of the ovipositor backwards to the coxite, baculus base slightly broad, apex slightly narrowed, sclerotized, two baculi proximal to each other at base; coxite strongly sclerotized, sub-rectangular, apical margin with setae, lateral sides of apical margin with stylus; stylus, cylindrical, small and distinct.

Distribution.

China (Guizhou).

Host plant.

Symplocaceae .

Etymology.

The specific name flavithorax refers to the yellow color of the prothorax.

Remarks.

This species is most similar to Zeugophora (Pedrillia) maculata ( Chûjô, 1941) (Figs 38-41 ) in the shape of the external morphology and color, but differs in having the pronotum and elytra without a black spot, the pubescence of surfaces slightly yellow and transparent, the median lobe apex slightly broad and the apical margin projecting and sharp, paramere of tegmen sub-trapezoid, and the base of the coxite with one elongate sclerotized area (pronotum and elytra with a black spot, the pubescence of surfaces pale yellow, median lobe apex slightly narrowed and downward, apical margin slightly round without projecting, paramere of tegmen tongue-shaped, base of coxite without elongate sclerotized area in Z. (P.) maculata (Figs 38 - 45 )).

Figures

Figures 29 - 32. Holotype of Zeugophora (Pedrillia) flavithorax sp. nov., male 29 dorsal view 30 ventral view 31 head, anterior view 32 pronotum, dorsal view. Scale bars: 1.0 mm (29, 30); 0.5 mm (31, 32).

Figures 33 - 37. Types of Zeugophora (Pedrillia) flavithorax sp. nov., genitalia 33 - 36 male genitalia of holotype 33 median lobe and median struts, lateral view 34 median lobe, dorsal view 35 tegmen, dorsal view 36 spiculum, dorsal 37 ovipositor of paratype, dorsal view. Scale bars: 0.5 mm (33, 35); 0.2 mm (34, 36, 37).

Figures 46 - 47. Habitat of Zeugophora (Pedrillia) flavithorax sp. nov. (Guizhou, Leigong Shan).

Figures 38 - 41. Zeugophora (Pedrillia) maculata (Chujo) from Guizhou, female 38 dorsal view 39 ventral view 40 head, anterior view 41 pronotum, dorsal view. Scale bars: 1.0 mm (38, 39); 0.5 mm (40, 41).

Figures 42 - 45. Genitalia of Zeugophora (Pedrillia) maculata (Chujo) from Guizhou, genitalia 42 - 44 male genitalia 42 median lobe and median struts, lateral view 43 median lobe, dorsal view 44 tegmen, dorsal view 45 ovipositor, dorsal view. Scale bars: 0.5 mm (42, 44); 0.2 mm (43, 45).