Anotylus extrasculptilis, Wang & Zhou & Lü, 2017

Wang, Lin-Fei, Zhou, Hong-Zhang & Lü, Liang, 2017, Revision of the Anotylus sculpturatus group (Coleoptera: Staphylinidae: Oxytelinae) with descriptions of seven new species from China, Zootaxa 4351 (1), pp. 1-79 : 33-37

Anotylus extrasculptilis sp. nov.

(Figs. 9)

Type locality: CHINA, Yunnan, Dali Bai Aut. Pref., Diancang Shan.

Type material examined. Holotype: male, CHINA, Yunnan, Dali Bai Aut. Pref., Diancang Shan E pass, 43 km NW Dali, 2700 m, (secondary pine forest, litter, moss sifted), 25˚59’50’’N/ 100˚00’30’’E, 23. VIII. 2 0 0 9 D. W. WRASE [02] ( MSPC); Paratype: 1 female, CHINA: Yunnan [ CH 07–03], Dali Bai Auton Pref., Diancang Shan W Dali, 25˚41’49’’N, 100˚06’24’’E, 2970 m, sifted at rock edges and under small shrubs, 28. V. 2007, coll. M. Schülke ( MSPC).

Description. Body crineous, head black and abdomen dark but not black; pronotum and elytra brownish, and legs yellowish. Forebody sparsely pubescent, punctate and striate. Body length male, 4.36 mm; female, 3.57 mm.

Male: Head (Fig. 9-1C, 9-2A) almost as broad as pronotum, with brown strip along anterior margin. Disc with sparse small punctures and dense striae, intervals large and glabrous. Vertex convex, mid-longitudinal sulcus deep but not clearly bordered, with shallower impression on each side before base. Supra-antennal ridge with margin incrassate. Temples dilated, more than two times as long as eyes. Clypeus nearly square, slightly transverse, about 1/3 of total head length, convex and glabrous, with very few punctures, anterior margin rounded and obviously produced. Epistomal suture with lateral portions straight and parallel, running backward beyond level of anterior margin of eyes.

Occipital suture straight or slightly curved forward in middle. Antenna filiform, segment IV globular, VI–X short and transverse, with ultimate one stilliform. Neck without smooth area.

Pronotum (Fig. 9-1D, 9-2A) transverse, broadest at near anterior 1/3, but not obvious; disc slightly convex, with obviously large punctures between striae, puncture intervals appeared to glabrous; mid-longitudinal sulcus deep, narrowing to base, with two shallower paramedial sulci, between medial and paramedial sulci bounded by longitudinal carina; sulci and carinae not clearly limited; shallow depression close to lateral margins. Anterior margin almost straight or weakly emarginate near lateral. Lateral margins curved but not obviously convergent posteriorly; posterior margins protruded; posterior angles obtuse but distinguishable. Scutellum with crest-shaped impression, with median lobe sharply pointed. Elytra densely sculptured and punctured, not pubescent; lateral margin curved and posterior margins truncate. Abdomen coriaceous, covered with punctures and pubescence. Sternite VII (Fig. 9-1G, 9-2C) with posterior margin weakly emarginate and bearing long setae laterally. Sternite VIII (Fig. 9-1H, 9-2D) broadly, shallowly bi-emarginate, middle not obviously angle-form and not beyond lateral angles, bearing long setae laterally.

Aedeagus (Fig. 9-1J–L, 9-3A–C) with median lobe elongate, inflated at base and shortly narrowing to apex; apical orifice large and ventral orifice crescentic; internal sac of median lobe with complicated sclerites. Parameres (Fig. 9-1M, 9-3D) arm-like, relatively narrow in basal part, closely situated to each other; with thick, short seta near apex.

Female. Head (Fig. 9-1E, 9-2B) narrower than pronotum (Fig. 9-1F, 9-2B). Clypeus relatively longer than male, and more square, never transverse; temples short, almost as long as eyes. Sternite VII (Fig. 9-2E) with posterior margin nearly straight, only very weakly produced in middle. Sternite VIII (Fig. 9- 1I, 9-2F) with posterior margin broadly rounded and protruded in middle. Spermatheca (Fig. 9-1N, 9-3E) with base bulb-like, with apical part stalk-like and slightly curved.

Distribution. China (Yunnan).

Etymology. The species epithet is from the Latin terms " extra- " (especial) and "sculptilis " (sculptured), to indicate the especial obvious patterns of striae and punctures on head and pronotum.

Differential diagnosis. This new species is similar to A. mutator ( Lohse, 1963) in appearance. It can be distinguished from the latter by having head with longitudinal striae less and coarser, the clypeus is glabrous, its pronotum with longitudinal striae much less, male sternite VII is weakly emarginate and without tubercle, sternite VIII is slightly bi-emarginate; whereas A. mutator ( Lohse, 1963) has clypeus coriaceous, male sternite VII is deeper emarginate and with two small tubercle in middle, sternite VIII is deeply broadly bi-emarginate.

The new species is similar to Anotylus nigelisculptilis sp. nov. in the structure of male genitalia but can be distinguished by the structure of internal sac and median lobe.