Anaedus unidentatus, Wang, Feng-Yan & Ren, Guo-Dong, 2007

Wang, Feng-Yan & Ren, Guo-Dong, 2007, Four new species and a new record of Anaedus from China (Coleoptera: Tenebrionidae), Zootaxa 1642, pp. 33-41 : 34-35

Anaedus unidentatus sp. nov.

( Figs. 1–6 , 25 )

Type material. Holotype: ɗ, deposited in HBUM. Gongshan Country, Yunnan Province, China. 4 May 2004, collected by Yang Xiu-Juan and Liu Yu-Shuang. Paratypes: 5 ɗɗ, 2ΨΨ, deposited in HBUM. Same data as holotype; 2 ɗɗ, 1Ψ, deposited in IZAS. Gongshan Country, Yunnan Province, 13 April 2002, collected by Liang Hong-Bin and Ba Wei-Dong; 1Ψ, deposited in HBUM. Gongshan Country, Yunnan Province, 2 to 3 May 2004, collected by Yang Xiu-Juan and Liu Yu-Shuang.

Diagnosis. The new species can be distinguished from A. buricus Schawaller, 1994 by the following characters: vertical posterior surface of the prothorax with a pair of teeth, which bend downwards; lateral margins of pronotum undulate with only one small tooth at each side; protibiae somewhat curved, without sexual dimorphism.

Etymology. The specific name is derived from the Latinized word “uni-” and combination of word “dentatus”, and refers to the single tooth of each pronotal lateral margin.

Description. Body oval, flat and elongate; black, legs, 1st and 2nd antennomeres, maxillary palpi brown, petellae black; dorsum covered with very dense and long pubescence, erect on head, lateral margins of pronotum and elytra, those concentrate into the midline in the median area of pronotal disc, while those on elytra posteriorly recumbent.

Labrum oblong and produced, with coarse punctures; clypeus strongly convex and coarsely punctate, with almost straight anterior margin; frontoclypeal suture deep and lineate in middle; frons with coarse punctures; terminal segments of maxillary palpi triangular. Antennae robust, reaching base of pronotum; 3rd antennomere as long as 4th and somewhat longer than 5th to 10th antennomeres, about 2.2 times as long as 2nd antennomere; last antennomere oblong-oval, with cuspidal apex, other antennomeres subcylindrical.

Pronotum transverse, about 1.7 times as broad as long, broadest at middle; anterior margin shallowly emarginate, wide and straight at middle; lateral margins unevenly expanded laterad, strongly convergent in apical half, feebly narrowed posteriad from middle and strongly sinuous before basal corners with a minute tooth on each apical third; posterior margin gently arcuate in middle, with a pair of teeth which bend downwards on the vertical posterior surface of the prothorax; anterior angles sharp and somewhat bent downwards, reaching front border of eyes; posterior angles acute and pointing outwards; disc convex, coarsely and densely punctate, area between the punctures adorned with irregular carinae; midline obsolete.

Scutellum triangular and without punctures; elytra about 1.5 times as long as broad, somewhat broader than pronotum, lateral margins finely serrate in basal fourth, rounded at shoulders; elytra and pseudopleura with similar punctures as those on pronotum; disc convex. Protibiae somewhat curved, meso- and metatibiae straight, gradually broadening towards apex; length ratio of 1st to 5th tarsomeres from base to apex of protarsus and of mesotarsus: 1.1: 0.5: 0.45: 0.2: 1.35 and 1.5: 0.5: 0.4: 0.2: 1.35, while length ratio of 1st to 4th tarsomeres of metatarsus from base to apex: 2.8: 0.8: 0.4: 1.5. Propleura with a small and deep impression at apex; median part of prosternum and V-shaped area of mesosternum densely and coarsely punctate; pleura with sparse punctures; while those on metasternum and abdominal sternites fine and sparse; metasternum with a round impression between coxae; last abdominal ventrite broadly triangular with sharpened apex.

Female. Body size larger than that of male; disc of elytra more convex.

Measurements. Body length: ɗ 8.0– 8.5 mm, Ψ 9.0– 11.5 mm; width: ɗ 3.8–4.0 mm, Ψ 4.0–5.0 mm.

Distribution. China (Yunnan).

Figures

FIGURES 1 – 6. Anaedus unidentatus sp. nov. (%) 1, antenna; 2, pronotum; 3, elytron; 4, aedeagus in ventral view; 5, aedeagus in dorsal view; 6, aedeagus in lateral view.

FIGURES 24 – 28. 24, Anaedus mroczkowskii Kaszab, 1968 (%) 25, Anaedus unidentatus sp. nov. (%) 26, Anaedus tibiodentatus sp. nov. (%) 27, Anaedus basilatilus sp. nov. (%) 28, Anaedus pluridentatus sp. nov. (Ψ)