Anomalophylla vidua, Ahrens, 2005

Ahrens, Dirk, 2005, Taxonomic revision of the genus Anomalophylla Reitter, 1887 (Coleoptera: Scarabaeidae: Melolonthinae: Sericini), Zootaxa 1076 (1), pp. 1-62 : 38-39

Anomalophylla vidua sp. n.

( Fig. 3D–F , 7 )

Type material. Holotype: ♂ ” China : W Sichuan, 2500 m, crossroads Kangding­Xindugiao x Kangding­Sabde, J. Kaláb, 17.6.1994 ” ( ZSM) . Paratypes: 2 ♂♂, 1 ♀ same data as holotype ( CA) , 1 ♂ “Szetschwan Kwanhsien Exp. Stštzner” ( CF) , 1 ♂ “ CHINA: W Sichuan 20 km N Sabde , 3200 m 29°35’N 101°23’E, 10–16.VII.1998, J. Král /1998 China Expedition J. Farka č, D. Král, J. Schneider & A. Smetana ” ( CK) .

Holotype description. Length: 6.0 mm, length of elytra: 3.6 mm, width: 3.3 mm. Body oblong, black; dorsal surface dull with long, dense, erect setae; pilosity black, setae on elytra and sometimes those on posterior portion of pronotum white. Head: Labroclypeus transverse, widest medially with lateral margins strongly convex and convergent anteriorly; anterior angles strongly rounded; lateral border and ocular canthus producing a distinct blunt angle; anterior and lateral margin strongly reflexed and anteriorly moderately sinuate medially; surface almost flat and moderately shiny, coarsely and densely punctate with numerous long, erect setae. Frontoclypeal suture distinct; weakly curved and slightly elevated; smooth area anterior to eye as wide as long. Ocular canthus moderately long and slender, finely and densely punctate, densely setose. Frons with coarse, dense punctures, each bearing a long and erect seta, basal punctation less dense and, irregular. Eyes small, ratio of diameter / interocular width: 0.43. Antenna black, with ten antennomeres; basal antennomeres brown, club 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 convergent and slightly sinuate before base, 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 bearing a long erect seta which is slightly directed anteriorly and weakly curved posteriorly. Anterior and lateral borders 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 and finely densely punctate; intervals flat, with fine, moderately dense punctures, punctures with long and erect setae on all intervals; 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 and long setose, setae partially appressed, partially erect. Metacoxa glabrous medially; laterally with fine, long appressed setae. Abdominal sternites with an indistinct transverse row of coarse punctures bearing thick setae between fine, dense punctation; all abdominal 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 / 1.42. Pygidium strongly convex; almost 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 / 3.7; 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 thick and long, equally spaced spines; medial face finely punctate, apex sharply truncate interiorly near tarsal articulation. Tarsomeres dorsally glabrous and moderately punctate, ventrally with sparse, short setae; metatarsomeres dorsally without longitudinal impressions, 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. 3D–F .

Intraspecific variation. Length: 5.4–7.0 mm, length of elytra: 3.3–4.3, width: 2.8–3.6 mm. One specimen has the elytra reddish brown. 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 with a small apical convexity.

Diagnosis. Anomalophylla vidua is similar in external shape and genital morphology to A. mandhatensis and A. majori . It differs from both in the hook­like, curved basal lobe of right paramere, which is equal in length and width.

Etymology. From the Latin word viduus (single, solitary).

Figures

FIGURE 3. (A–C) Anomalophylla morula sp. n. (holotype); (D–F) A. vidua sp. n. (holotype); (G– J) A. kozlovi Medvedev (lectotype); (K–M) A. huashanica sp. n. (holotype); (N–P) A. kangdingensis sp. n. (holotype); (Q–S) A. mawi (Arrow) (syntype). (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.