Anotylus applanatifrons Wang & Zhou, 2020

Wang, Lin-Fei & Zhou, Hong-Zhang, 2020, Taxonomy of Anotylus nitidifrons group (Coleoptera: Staphylinidae: Oxytelinae) and five new species from China, Zootaxa 4861 (1), pp. 23-42 : 30-33

3. Anotylus applanatifrons Wang & Zhou , sp. nov.

(Fig. 3)

Type locality: CHINA, Zhejiang, Kaihua, Gutianshan .

Type material examined. Holotype: male, CHINA, Zhejiang, Kaihua , Gutianshan, G 24ha–28, 446– 715 m, 1–4. V. 2010. coll. Chongling Liu ( IZ-CAS).

Measurement. BL= 3.91 mm; FBL= 1.92 mm; HL= 0.58 mm; HWE= 0.96 mm; HWT=1.0 mm; EL= 0.30 mm; TL= 0.57 mm; ETR= 0.52; PNL= 0.76 mm; PNW= 0.92 mm; PNR= 0.83; ABDW= 1.07 mm.

Description. Body yellow-brown, head darker, shining.

Male: Head (Fig. 3–1C) near rectangular, slightly broader than pronotum. Clypeus convex, smooth and with small punctures, anterior martin truncated. Epistomal suture with lateral portions poorly marked and running backward to level of anterior margin of eyes. Supra-antennal ridge bordered by very fine ridge. Post-ocular furrow marked, not reach the base of head. Disc depressed, smooth and with dense small punctures, convex and with orderly short longitudinal furrows at base, without middle sulcus and depressions. Temples dilated, with big punctures, about 1.5 times as long as eyes. Eyes big. Occipital furrow complete and curved forward. Antenna filiform, VI-X with basal ridges.

Pronotum (Fig. 3–1C) trapezoidal, broadest at near anterior 1/3, convex in middle, with dense punctures and less furrows. Mid-longitudinal sulcus straight and deep, with two shallower and shorter paramedial sulci and two paralateral depressions close to lateral margins. Posterior angles well marked. Sides running continuously and weakly crenulated at posterior half. Elytra with dense punctures and longitudinal furrows. Abdomen without puncture.

Sternite VII (Figs 3–1E, 3–2E) with posterior margin broadly emarginate and carrying long setae laterally, produced at middle and with two small tubercles near margin; Sternite VIII (Figs 3–1F, 3–2F) with posterior margin broadly bi-emariginate and carrying long setae laterally, middle lobe broad and truncated, slightly shorter than lateral angles posteriorly.

Aedeagus (Figs. 3–1I–K, 3–2A–C) oval, inflated at base and shortly narrowing to apex; apical orifice large and ventral orifice crescentic. Parameres (Figs 3–1L, 3–2I) arm-like, closely situated, broader at anterior half carrying row of setae and narrowing to apex; with large seta at middle of ventral edge on each piece.

Female. Head (Fig. 3–1D) narrower than pronotum (Fig. 3–1D), with big punctures and deep furrow near base. Temples not dilated, about 0.7 times as long as eyes. Sternite VII (Figs 3–1G, 3–2G) with posterior margin almost straight and unmodified. Sternite VIII (Figs. 3–1H, 3–2H) with posterior margin produced, broadly and obtusely triangular. Spermatheca (Figs 3–1M, 3–2J) with base bulb-like, with apical part clavate and slightly curved.

Distribution: China (Zhejiang).

Etymology. The specific epithet derived from two Latin words, applanatus and frons, to indicate the relatively depressed and plane front of the head.

Differential diagnosis. This new species can be distinguished by the following characters: head and pronotum with dense small punctures; clypeus not bordered by fine ridge; pronotum with posterior angles sharp; paramere with row of setae near apex; structure and relative position of internal sac selerites (Fig. 3–2C–D).