Anomalophylla dongchuanensis, Ahrens, 2005

Ahrens, Dirk, 2005, Taxonomic revision of the genus Anomalophylla Reitter, 1887 (Coleoptera: Scarabaeidae: Melolonthinae: Sericini), Zootaxa 1076 (1), pp. 1-62 : 51-53

Anomalophylla dongchuanensis sp. n.

( Fig. 4G–J , 8 )

Type material. Holotype: ♂ ” China: Yunnan 1500–3200m 26°07’N 103°14’E Dongchuan 28/6–3/7 Vit Kubán leg. 1994” ( MMBC via TICB) . Paratypes: 7 ♂♂, 3 ♀♀ same data as holotype ( TICB, CA) , 21 ♂♂, 140 ♀♀ ” Yunnan 1500–3200[m] 26°07’N 103°14’E Dongchuan 28.vi.–3.vii. Vít Kubán leg. 1994” ( TICB, CA) .

Holotype description. Length: 5.2 mm, length of elytra: 3.3 mm, width: 2.9 mm. Body oblong; dorsal surface and legs brown; antenna yellow; pronotum, apex of elytra, ventral surface black; dorsal surface dull; head and pronotum with long, dense, erect setae; pilosity on elytra sparse; yellow pilosity on head, pronotum, elytra. Head: Labroclypeus transverse, widest basal to middle with lateral margins strongly convex, convergent anteriorly and toward base; anterior angles strongly rounded; lateral border and ocular canthus producing distinct blunt angle; anterior and lateral margin strongly reflexed; anterior margin moderately sinuate medially; surface almost flat medially, moderately shiny with double punctation; fine glabrous punctures mixed with coarse, dense punctures each bearing a long, erect seta. 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 double punctation; fine glabrous punctures mixed with coarse, moderately dense punctures each bearing a long, erect seta; basal punctation less dense, predominantly fine, almost glabrous. Eyes small, ratio of diameter / interocular width: 0.44. Antenna with ten antennomeres, yellow; club darker with five equal in length antennomeres; club 2.5 times as long as remaining antennomeres combined, reflexed. Prementum weakly elevated, transversely carinate; distinctly concave apical to elevation. Pronotum: widest adjacent to base; lateral margins in posterior half almost straight and subparallel, in anterior half strongly convex and convergent; anterior angles not produced, strongly rounded; posterior angles strongly rounded; anterior margin medially weakly convex with distinct, fine marginal line; basal margin with fine marginal line. Pronotal surface with dense, double punctation; fine, glabrous punctures mixed with large punctures bearing moderately long, erect seta directed posteriorly. Anterior and lateral borders setaceous; basal margin of hypomeron not produced ventrally, not transversely sulcate anterior to base. Scutellum : moderately long; apex moderately sharp; with fine, sparse punctures; smooth apically; minute setae present in punctures. Elytra: oblong, widest medially; striae indistinctly impressed and finely, densely punctate; intervals weakly convex with fine, moderately dense punctures; punctures on all intervals with long, erect setae, which are anteriorly longer and denser; punctures on even intervals setose only basally; sutural interval with robust, long single seta. Epipleural edge fine, ending at strongly convex external apical angle of elytra; epipleura densely setaceous, 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 glabrous near articulation of the leg; elsewhere with fine, long appressed setae. 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; penultimate sternite 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, moderately long setae; pilosity along apical margin denser; 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, long, widest at apex; ratio width / length: 1 / 3.3; dorsally sharply margined; dorsal edge serrate, with two groups of spines, 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 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 without longitudinal impressions, ventrally with strongly serrated ridge adjacent to strong longitudinal carina, laterally without strong longitudinal carina; first metatarsomere slightly shorter than following two tarsomeres combined, one third of length longer than upper tibial spur. Protibia short, bidentate. Protarsal claws asymmetrical; basal tooth of inner protarsal claw widened, truncate apically. Aedeagus: Fig. 4G–J .

Diagnosis. This species differs from the similar A. kozlovi by the shape of parameres. The right paramere is straight and not curved externally as in A. kozlovi and the medial margin of its basal lobe is strongly reflexed, the left paramere is not widened medially in dorsal view.

Intraspecific variation. Length: 4.3–6.7 mm, length of elytra: 3.0– 4.2 mm, width: 2.7– 3.5 mm. Coloration varies strongly: body and legs sometimes entirely black, entirely reddish brown, reddish brown with dark apex of elytra only, or reddish brown with dark pronotum and dark apex of elytra. ♀: Antennal club with three antennomeres and distinctly shorter than the remaining antennomeres combined; eyes equal in size to that of male.

Etymology. The new species is named after Dongchuan, the type locality.

Figures

FIGURE 4. (A–C) Anomalophylla wulingshanica sp. n. (holotype); (D–F) A. ganhaiziensis sp. n. (holotype); (G–J) A. dongchuanensis sp. n. (holotype); (K–M) A. qinlingensis sp. n. (holotype); (N–P) A. moxiensis sp. n. (holotype); (Q–S) A. plagipennis 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 8. Present known distribution of Anomalophylla bicolor, A. dongchuanensis, A. ganhaiziensis, A. huashanica, A. kangdingensis, A. kozlovi, A. mawi, A. moxiensis, A. plagipennis, A. qinlingensis, and A. wulingshanica.