Zeugophora (Pedrillia) nigricollis (Jacoby, 1885) 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) nigricollis (Jacoby, 1885) new record Figures 48-53 , 54-57

Pedrillia nigricollis Jacoby, 1885: 195. Type locality: Japan, Wada-tôge. Type

depository: NHMUK. Synonymized as Pedrillia bicolor Kraatz, 1879 by Kimoto 1986: 309.

Zeugophora (Pedrillia) nigricollis : Crowson, 1946: 95 [Japan]; Gressitt and Kimoto 1961: 24, 27; Chûjô 1954: 51; Chûjô and Kimoto 1961: 119; Kimoto 1964: 108.

Zeugophora (Pedrillia) bicolor : Kimoto, 1986: 309; Jolivet 1957: 12; Kimoto and Takizawa 1994: 6, 99, 267; An and Kwon 2002: 272; Silfverberg 2010: 334; Li and Liang 2018: 133.

Zeugophora bicolor : Gressitt, 1945: 139; An and Kwon 1995: 91-92; Takizawa 2006: 2; Rodríguez-Mirón 2018: 291.

Zeugophora nigricollis (Jacoby, 1885). Restored as a valid species by Takemoto 2019: 15-19.

Specimens examined.

Type: H. T. / Japan. G. Lewis. 1910-320. / Pedrillia nigricollis Jac.

Non-types (KIZ). Two males, China, Ningxia, Jingyuan, Liupan Shan National Nature Reserve, Erlonghe Forest Farm, 35.33041°N, 106.35110°E, 2088 m, 2018.vii.27, Kaiqin Li coll.

Diagnosis.

Elytra brown, head, antennae, pronotum, scutellum, legs, and underside black (except lateral sides of abdominal ventrites brown); median lobe slender, curved in lateral view, apex of median lobe triangular and blunt.

Description.

BL = 3.8-4.5 mm, BW = 1.9-2.2 mm. Elytra brown, head, antennae, pronotum, scutellum, legs, and underside black (except lateral sides of abdominal ventrites brown).

Head: eyes prominent, inner margin with distinct canthus; vertex coarsely and densely punctate and pubescent, the middle slightly smooth without puncture; occiput strongly constricted; frons densely punctate and pubescent; fronto-clypeal suture slightly arching backwards centrally; clypeus rectangular, width 2.1 × that of length, anterior and lateral margin densely punctate and pubescent; labrum rectangular, narrower than clypeus, center of anterior portion emarginate, anterior and lateral 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 3, antennomeres 6-10 slightly shorter than antennomere 5, antennomere 11 as long as antennomere 5, acute at apex, antennomeres 1-4 sparsely punctate and pubescent, antennomeres 5-11 densely punctate and pubescent.

Thorax: PW/PL = 1.5-1.6; anterior margin slightly flattened; length of anterior margin nearly equal to posterior margin; posterior margin arching backwards in the center; anterior groove distinct laterally, shallow medially; posterior groove shallow; lateral margin gradually expanding from anterior angle to the middle, then constricted, lateral tubercle broad and round; disc convex, densely punctate and pubescent, basal portion of each side slightly prominent; each anterior and posterior angle with two or three long setae. Scutellum triangular, apical margin flattened, sparsely punctate and pubescent.

Elytra: EL/EW = 1.3-1.5; elytral humeri projecting antero-laterally, humeral groove shallow; lateral margin gradually expanding from anterior to posterior, the elytra widest behind the middle, apex round; disc flattened, weakly depressed at basal one third, coarsely punctate and pubescent; elytra base densely punctate and pubescent; suture with one row of punctures and pubescence; epipleura narrow, with one row of punctures and pubescence.

Abdomen and legs: underside sparsely punctate and pubescent. Legs moderately long, femora robust, meso- and meta-tibia slightly curved. Pygidium moderately long, punctate, and pubescent; apical margin of last abdominal ventrite slightly prominent. Median lobe sclerotized, slender, curved in lateral view, lateral sides thick and parallel, dorso-central portion membranous with basal one third tubular, apex triangular and blunt, apex slightly leftward; median struts rod-shaped, widely separated from each other, approximately 2.6 × as long as median lobe; base of tegmen V-shaped, tegminal ring sub-oval, paramere long and triangular with apical margin with long setae; endophallus membranous, with paired granulated and weakly sclerotized area. Spiculum long and Y-shaped, with apical margin projecting.

Distribution.

China (Ningxia).

Host plant.

Euonymus elatus ( Celastraceae ) (Figs 22 , 23 ).

Remarks.

Takemoto (2019) restored Zeugophora (Pedrillia) nigricollis Jacoby, 1885 to a valid species from the synonymy of Z. ( P. ) bicolor (Kraatz, 1879). This species is most similar to Zeugophora (Pedrillia) bicolor Kraatz, 1879 in having the black and brown color, but differs in having the pronotum entirely black, the median lobe less curved in the lateral view, the median lobe slender, with the apex of the median lobe triangular and blunt (the base of the pronotum is slightly brown, median lobe is more curved in the lateral view, median lobe slightly broader, and apex of median lobe narrower and sharper in Z. (P.) bicolor ).

Figures

Figures 48 - 53. Zeugophora nigricollis Jacoby 48 holotype label 49 holotype dorsal view 50 - 53 specimens from Ningxia, male 50 head, anterior view 51 pronotum, dorsal view 52 dorsal view 53 ventral view. Scale bars: 1.0 mm (49, 52, 53); 0.5 mm (50, 51).

Figures 54 - 57. Genitalia of Zeugophora (Pedrillia) nigricollis Jacoby from Ningxia, male genitalia 54 median lobe and median struts, lateral view 55 median lobe, dorsal view 56 tegmen, dorsal view 57 spiculum, dorsal view. Scale bars: 0.5 mm (54, 56); 0.2 mm (55, 57).

Figures 21 - 24. 21 Habitat of Zeugophora (Pedrillia) euonymorum sp. nov. (Ningxia, Liupan Shan) 22, 23 host plant of Zeugophora (Pedrillia) euonymorum (Euonymus elatus) 24 copulation.