Anomalophylla obscuripennis, Ahrens, 2005

Ahrens, Dirk, 2005, Taxonomic revision of the genus Anomalophylla Reitter, 1887 (Coleoptera: Scarabaeidae: Melolonthinae: Sericini), Zootaxa 1076 (1), pp. 1-62 : 20-22

Anomalophylla obscuripennis sp. n.

( Fig. 1Q–S , 7 )

Type material. Holotype: ♂ ” China: W­Sichuan (Yaan Pref. Shimian Co.) Xiaoxiang Ling , 7 km S Liziping, 35 km S Shimian, 28°56’N / 102°18’E, ca. 1600 m (field ridge, bamboo) 7.VII.1999 leg. D. Wrase ” ( DEI) . Paratypes: 27 ♂♂, 3 ♀♀ same data as holotype ( CA, TICB, NME, DEI) , 7 ♂♂, 2 ♀♀ ” China: S­Sichuan 1999 Yaan Pref. Shimian Co. Xiaoxiang Ling, 7 km S Liziping, 35 km S Shimian , 28°56’N / 102°18’E, ca. 1600 m, Bambus, Feldrand 7.VII. leg. M. Schülke ” ( CAN) , 2 ♂♂ ” China: W­Sichuan Yaan Pref. Shimian Co. Xiaoxiang Ling, 7 km S Liziping, 35 km S Shimian 1600 m, 28°56’N, 102°18’E, 7.VII.1999 leg. A. Pütz ” ( CAPE) , 7 ♂♂, 1 ♀ ” China: W­Sichuan Yaan Pref., Shimian Co. Xiaoxiang Ling, side valley ab. Nanya Cun nr. Caluo , 11 km S Shimian, 1250 m, 7.VII.1999 leg. A. Pütz ” ( CAPE, CA) , 3 ♂♂, 1 ♀ ” China Centr. Sichuan Volong 150 [km] SW Chengdu 9.–10.7.94 Benes lg.” ( CA) , 2 ♂♂ “ CHINA Sichuan pr. Liziping 28.6.– 3.7.1991 R. Dunda lgt.” ( CN, CA) , 3 ♂♂, 1 ♀ “ Lungsi 7.1934 2000 m Wassuland / W. Szechuan, China Sankiangkou leg. Friedrich” ( CF, CA) , 1 ♂ “ CHINA, Daxue Shan Mts., Sichuan, Mianning , 1850 m, 6.vi.1999, 28°33’N, 102°10’E, V. Sinaev & A. Plutenko ” ( TICB) .

Holotype description. Length: 6.1 mm, length of elytra: 3.8 mm, width: 3.1 mm. Body oblong, black; dorsal surface dull with long, dense, erect setae; pilosity black; setae on elytra and sometimes those on pronotum posteriorly white. Head: Labroclypeus transverse, widest medially; lateral margins strongly convex, convergent anteriorly; anterior angles strongly rounded; lateral border and ocular canthus producing a distinct blunt angle; anterior and lateral margin strongly reflexed, anteriorly moderately sinuate medially; surface almost flat, moderately shiny and coarsely, densely punctate with numerous long, erect setae. Frontoclypeal suture distinct, weakly curved, slightly elevated; smooth area anterior to eye as wide as long. Ocular canthus moderately long, slender; finely, densely punctate; densely setose. Frons with coarse, dense punctures, each bearing a long, erect seta; posteriorly punctation less dense, irregular. Eyes small, ratio of diameter / interocular width: 0.47. Antenna dark yellow with ten antennomeres; club black with five equal in length antennomeres; club 2.5 times as long as the remaining antennomeres combined, reflexed. Prementum almost flat. Pronotum: widest at base; lateral margins in posterior half almost straight and subparallel, in anterior half strongly convex and convergent; anterior angles weakly produced and moderately rounded; posterior angles blunt and moderately rounded; anterior margin medially weakly convex with distinct, fine marginal line; basal margin with a fine marginal line. Pronotal surface with dense, double punctation; fine glabrous punctures mixed with large punctures; punctures bearing a long erect seta which is slightly directed anteriorly, weakly curved posteriorly. Anterior and lateral borders of pronotum setose; basal margin of hypomeron not produced ventrally, not transversely sulcate anterior to base. Scutellum : moderately long; apex weakly rounded with fine, dense punctures; posteriorly partially smooth; minute setae present in the punctures. Elytra: oblong, widest medially; striae indistinctly impressed, densely punctate with fine punctures; intervals flat, with fine, moderately dense punctures; with long and erect setae in the punctures on all intervals; even intervals anteriorly setose only; sutural interval with robust and long single seta. Epipleural edge fine, ending at the strongly convex external apical angle of elytra, epipleura densely setose, strongly curved in anterior third of elytra, apical border chitinous, without short microtrichomes. Venter: Ventral surface dull with fine, dense punctures. Metasternum densely setose with setae long, partially appressed, partially erect. Metacoxa with fine, long appressed setae; glabrous medially. Abdominal sternites with indistinct transverse row of coarse punctures bearing thick setae between fine, dense punctation; all sternites with fine, long setae; tegument of abdominal sternites (60x magnification) with fine polygonal mesh pattern formed by microtrichomes; ultimate three abdominal sternites at midline with longitudinally impressed line. Mesosternum between mesocoxae narrow, narrower than mesofemur, with irregularly scattered, strong setae. Ratio of length of metepisternum / metacoxa: 1 / 1.56. Pygidium moderately convex; completely shiny; with fine, dense punctures bearing fine, long setae; without smooth midline. Legs: slender with shiny surface. Femora with two longitudinal rows of setae; finely, densely punctate and setose; anterior edge of metafemur acute, lacking adjacent serrated line; posterior margin weakly convex with a few fine setae medially, ventral posterior margin weakly widened in apical half; posterior margin smooth ventrally and dorsally. Metatibia moderately slender and long, widest at apex; ratio width / length: 1 / 3.4; dorsal margin sharply carinate and smooth with two groups of spines, the basal group at one third, apical one at two thirds of metatibial length; basally with a few single spines in punctures; lateral face longitudinally convex with moderately dense, fine punctures; ventral edge serrated with four strong, long, equally spaced spines; medial face finely punctate; apex sharply truncate interiorly near tarsal articulation. Tarsomeres dorsally glabrous, coarsely punctate; ventrally with sparse, short setae; metatarsomeres dorsally with longitudinally impressed punctures, ventrally with strongly serrated ridge, laterally without strong longitudinal carina; first metatarsomere slightly shorter than the following two tarsomeres combined and one third of its length longer than the upper tibial spur. Protibia short, bidentate. Protarsal claws symmetrical, basal tooth of inner protarsal claw evenly pointed. Aedeagus: Fig. 1Q–S .

Intraspecific variation. Length: 5.3–7.1 mm, length of elytra: 3.3–4.4, width: 2.8–3.7 mm. Some specimens have the elytra uniformly reddish brown or dark brown, the lateral and sutural interval is rarely dark. The density of punctation on dorsal surface as well as shape of lateral border of pronotum are variable. ♀: Antennal club with three antennomeres and distinctly shorter than the remaining antennomeres combined; eyes equal in size to that of male; pygidium almost flat and coarsely and densely punctate.

Diagnosis. The new species is similar to A. tristicula in external morphology and in the shape of aedeagus. It differs in having sparser pilosity on the elytra and by the generally smaller and narrower aedeagus, the right paramere has only a short basal lobe (basal lobe long in A. tristicula ).

Etymology. From the combined Latin words obscurus (dark) and penna (wing= elytra).

Figures

FIGURE 1. (A–C) Anomalophylla tristicula Reitter (Tibet: Kuku­Nor); (D–F) A. tristicula Reitter (China, Yunnan, Dequen env., “population B”); (G–J) A. tsangpoana sp. n. (holotype); (K–M) A. moupinea (Fairmaire) (lectotype “Chine: Moupin”); (N–P) A. subcarinata sp. n. (holotype); (Q–S) A. obscuripennis sp. n. (holotype). (A, D, G, K, N, Q) aedeagus, left side lateral view; (B, E, H, L, O, R) parameres, dorsal view; (C, F, J, M, P, S) aedeagus, right side lateral view. Scale bar = 0.5 mm.

FIGURE 7. Present known distribution of Anomalophylla hispidulosa, A. majori, A. mandhatensis, A. morula, A. obscuripennis, and A. vidua.