Anomalophylla hispidulosa, Ahrens, 2005

Ahrens, Dirk, 2005, Taxonomic revision of the genus Anomalophylla Reitter, 1887 (Coleoptera: Scarabaeidae: Melolonthinae: Sericini), Zootaxa 1076 (1), pp. 1-62 : 31-33

Anomalophylla hispidulosa sp. n.

( Fig. 2N–P , 7 )

Type material. Holotype: ♂ China. S. Gansu Dengkagoin 5.– 9.6.1996 Bene š & Š tepa ř lgt. ( ZSM) . Paratypes: 7 ♂♂, 2 ♀♀ same data as holotype ( CA, TICB) .

Holotype description. Length: 5.6 mm, length of elytra: 3.6 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 white at base. Head: Labroclypeus transverse, widest medially; lateral margins strongly convex and slightly convergent anteriorly and toward base; 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, slender with fine, dense punctures, densely setose. Frons with coarse, dense punctures bearing a long, erect seta; basal punctation less dense, irregular. Eyes small, ratio of diameter / interocular width: 0.43. Antenna black with ten antennomeres; base 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 basal half almost straight and subparallel, strongly convex and convergent in apical half; 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 with fine, glabrous punctures mixed with large punctures bearing a long, erect seta. 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, partially smooth on apical portion; 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 on all intervals with long, erect setae; sutural interval with robust, long 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 with dense, long setae; setae partially appressed, partially erect. Metacoxa with fine, long, appressed setae; glabrous medially. Abdominal sternites with an 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 / 1.5. Pygidium moderately convex, posteriorly shiny; with fine, dense punctures bearing fine, long setae; without smooth midline. Legs: slender with shiny surface. Femora with two longitudinal rows of setae; fine dense punctures 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 / 3.5; dorsal margin sharply carinate and smooth with two groups of spines, the basal group at one third, apical group at two thirds of metatibial length; basally with a few single spines in punctures; lateral face longitudinally convex with 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 and finely 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. 2N–P .

Intraspecific variation. Length: 4.7–7.0 mm, length of elytra: 3.3–4.7 mm, width: 2.8– 3.8 mm. Some specimens have the elytra uniformly reddish brown without dark lateral margins. 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; pygidium apically more strongly convex and completely shiny; eyes equal in size to that of male.

Diagnosis. Anomalophylla hispidulosa is similar to A. mandhatensis in external shape and genital morphology of male. It differs from A. mandhatensis by the distally produced basal lobe of right paramere (in A. mandhatensis medially produced) and the minute lateral apophysis present at left side of phallobase (absent in A. mandhatensis ).

Etymology. From the Latin word hispidulosus (setose).

Figures

FIGURE 2. (A–C) Anomalophylla bicolor sp. n. (Lectotype: Tatsienlu ­ Kiulung); (D–F) A. liciata sp. n. (holotype); (G–J) A. subfastuosa sp. n. (holotype); (K–M) A. stoetzneri sp. n. (holotype); (N– P) A. hispidulosa sp. n. (holotype); (Q–S) A. majori 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.