Anotylus rectisculptilis, 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 : 26-30

Anotylus rectisculptilis sp. nov.

(Figs. 7)

Type locality: CHINA, Zhejiang, Anji County, Longwang Mountain .

Type material examined. Holotype: male, CHINA, Zhejiang province, Anji County, Longwang Mountain , 450 m, 12. IV. 1996. coll. Hong Wu (IZ-CAS) ; Paratypes: CHINA: Zhejiang: 3 females, Anji County, Longwang Mountain , 450 m, 12. IV. 1996. coll. Hong Wu (IZ-CAS) ; 3 males, 6 females, Anji County, Longwang Mountain , 500 m, 14. V. 1996. coll. Hong Wu (IZ-CAS).

Description. Body black, shiny; legs, elytra and pronotum dark brown. Forebody pubescent, densely punctate and striate. Body length [average] male, 3.40 mm; female, 3.03 mm.

Male: Head (Fig. 7-1C, 7-2A) slightly broader than pronotum. Disc extremely convex, covered with punctures and dense striae, mid-longitudinal sulcus long and deep, with deep impression on each side before base. Supraantennal ridge with margin incrassate. Temples dilated, approximately two times as long as eyes. Clypeus nearly trapezoidal, about 1/3 of total head length, slightly depressed and coriaceous, sparely with less small punctures; anterior margin produced and nearly rounded; coriaceous before base. Epistomal suture with lateral portions obliquely inward, running backward to level of anterior margin of eyes.

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

Pronotum (Fig. 7-1D, 7-2A) quadrate, not obviously transverse, with broadest at near anterior 1/4, surface with round punctures and dense striae or without striae at all; mid-longitudinal sulcus straight and deep, narrowing to base, and two shallow paramedial sulci; medial and paramedial sulci bounded by obtuse longitudinal carina; with two shallow depressions near to lateral margins. Anterior margin broadly emarginate. Lateral margin not very much curved outwards, somehow straightly convergent in posterior 1/3, crenate on posterior half. Posterior margin curved but not much protruded, posterior angles obtuse but obvious. Scutellum with crest-shaped impression, with median lobe sharply pointed. Elytra covered with dense striate and punctures, no pubescent; lateral margin curved, posterior margins truncate and slightly slant. Abdomen coriaceous, covered with punctures and pubescence. Sternite VII (Fig. 7-1G, 7-2C) with posterior margin nearly straight and bearing long setae laterally; Sternite VIII (Fig. 7-1H, 7-2D) with posterior margin broadly bi-emarginate and bearing long setae laterally, forming triangulate plate in middle and slightly beyond lateral angles posteriorly.

Aedeagus (Fig. 7-1J–L, 7-3A–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 complicate sclerites. Parameres (Fig. 7-1M, 7-3D) closely situated to each other and twining around median lobe; flattened and slightly enlarged with broader base; with thick seta at middle of ventral edge of each paramere.

Female. Head (Fig. 7-1E, 7-2B) smaller than male, narrower than pronotum; Temples shorter than eyes. Pronotum (Fig. 7-1F, 7-2B) with lateral margin crenate on posterior 1/4. Sternite VII (Fig. 7-2E) with posterior margin nearly straight and bearing long setae laterally. Sternite VIII (Fig. 7- 1I, 7-2F) with posterior margin broadly rounded and produced. Spermatheca (Fig. 7-1N, 7-3E) with base bulb-like, with apical part clavate and slightly curved.

Distribution. China (Zhejiang).

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

Differential diagnosis. This new species is similar to Anotylus subsericeus ( Bernhauer, 1938) in appearance. It can be distinguished from the latter by having head and pronotum with longitudinal striae much denser, male sternite VII is straight, sternite VIII with deeper bi-emargination; whereas A. subsericeus ( Bernhauer, 1938) has male sternite VII slightly emarginate.

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