Description of Trichodryas slipinskii sp. n. from China (Coleoptera, Dermestidae, Trinodinae)

Abstract Trichodryas slipinskii sp. n. from Yunnan Province of China is described and illustrated. A key to the known species of this genus is provided.


Introduction
The small dermestid genus Trichodryas Lawrence & Ślipiński, 2005 contained only two described Malaysian species before our work, T. esoterica Lawrence & Ślipiński, 2005 and T. lawrencei Háva, 2008. According to Lawrence and Ślipiński (2005), the genus (based on unnamed specimens) is known from the Malay Peninsula, Borneo, Java and the Sulu Archipelago, but likely to be more widely distributed in this region. In this paper we describe a new species, T. slipinskii sp. n. from Yunnan Province of China. The genus Trichodryas is reported from China for the first time.

Material and methods
The type series was collected using Malaise traps during the project Living Landscapes China. Types are deposited in the Institute of Zoology, Chinese Academy of Sciences, Beijing, China.
Standard measurements were made following Háva (2008), as follows: BL body length (measured from the anterior margin of head to the apex of the elytra). BW body width (measured between two anterolateral humeral calli). PL pronotum length (measured from the top of the anterior margin to scutellum). PW pronotum width (measured between the two posterior angles of pronotum).
All measurements are given in millimeters. Description. Body measurements: BL 3.0-3.2 mm, BW 1.1-1.2 mm, PL 0.5-0.6 mm, PW 1.0-1.1 mm. Head black, pronotum and anterior portions of elytra yellowish-brown, remaining portions of elytra, underside and antennae dark brown to black, legs light-brown. All parts covered by brown setation.
Female. Unknown. Differential diagnosis. The new species Trichodryas slipinskii sp. n. differs from both described congeners in only 10-segmented antennae and its larger size.
Remarks. Háva (2008) provided an incorrect illustration of the antenna of T. esoterica as it does not correspond to the illustration and description in Lawrence and Ślipiński (2005). According to the measurements of T. esoterica by Lawrence and Ślipiński (2005) and the picture of T. lawrencei by Háva (2008), the ratio of antennomere lengths is a good way to separate these species. Lawrence and Ślipiński (2005) pointed out that there are definitely only 10 antennomeres in the specimen of undescribed T. sp. from Kalimantan Barat and probably in the unknown T. sp. from the Sabah as well. The antennae of the two specimens from Yunnan described above definitely are 10-segmented.