Pseudognaptorina flata, Liu, Hao-Yu & Ren, Guo-Dong, 2009

Liu, Hao-Yu & Ren, Guo-Dong, 2009, Review of the genus Pseudognaptorina Kaszab from China (Coleoptera, Tenebrionidae), Zootaxa 2174, pp. 45-50 : 46-49

Pseudognaptorina flata sp. nov.

( Figs 2–16 )

Type material. Holotype 3, China, Sichuan, Batang, 30º07' N, 99º02' E, 3850 m, 16 July 2008, coll. Guodong Ren. Paratype: 1Ƥ, same data as the holotype (holotype and paratype in MHBU).

Diagnosis. This new species resembles P. o b t u s u s Shi, Ren & Merkl, but can be distinguished by the following characters: upper edge of inner surface of profemur straight; both sides of pronotum explanate and slightly concave; elytra densely covered with distinct wrinkles; apices of lateral branches of spiculum gastrale distinctly widened. It is also related to P. exsertogena Shi, Ren & Merkl , but differs in several characters: genae slightly convex; anterior margin of pronotum shallowly and arcuately emarginated; ventral surfaces of male mesotarsomeres I–III with hair brushes; both sides of pronotum explanate and slightly concave; apical margin of lobe of ovipositor almost straight.

Description. Body black, slightly shiny.

Male ( Fig. 2 ). Anterior margin of clypeus slightly sinuate. Outer margin of head with obtuse-angled incision before antennal insertion. Genae slightly convex, parallel-sided before eyes. Eyes not protruding beyond outer margin of head. Dorsal surface of head densely covered with fine punctures. Frontoclypeal suture conspicuous. Antennae reaching posterior margin of pronotum, length (width) ratio of antennomeres II–XI as follows: 10(8): 25(8): 12(9): 11(9): 11(7): 13(8): 11(11): 10(12): 10(12): 14(13).

Pronotum ( Fig. 13 ) transverse, 1.36 times as wide as long, widest at middle, 1.93 times as wide as maximum width of head. Ratio of widths at anterior margin to its maximum to posterior margin 39: 73: 70. Anterior margin shallowly and arcuately emarginated, bordered at both sides, anterior angles widely rounded, lateral margins arcuately narrowed anteriorly, obliquely narrowed at posterior one-third, bordered along entire length, posterior angles obtusely rounded, posterior margin straight, not bordered. Disc explanate and slightly concave at both sides, densely covered with fine punctures. Prothoracic hypomeron smooth, covered with longitudinal rugae. Prosternum in front of procoxae strongly convex.

Elytra elongate-oval (1.25 times as long as wide), widest at middle, 1.29 times as wide as maximal width of pronotum. Disc weakly convex, densely covered with irregular wrinkles. Epipleural carina visible from above at anterior half and apex. Epipleural surface smooth, densely covered with fine wrinkles. Abdominal sternites covered with fine punctures and golden setae, I–III mixed with wrinkles, VIII with apical margin sinuate ( Fig. 12 ).

Legs ( Figs 5–7 ) stout, length (width) ratio of pro-, meso- and metafemora: 140(36): 156(34): 180(37); that for corresponding tibiae: 124(20): 128(21): 178(24). Upper edge of inner surface of profemur straight, mesotibia slightly incurved. Ventral surface of pro- and mesotarsomeres I–III with hair brushes; IV with two tufts of pale hairs at apices. Metatibia incurved, gradually dilated apically, length (width) ratio of metatarsomeres I–IV as follows: 41(13): 25(11): 21(10): 43(10).

Aedeagus ( Figs 8–10 ): length 2.79 mm, width 0.51 mm (specimen body length 12.1 mm). Parameres distinctly elongate, length 0.91 mm, width 0.37 mm, outer margins slightly sinuate. Spiculum gastrale as in Fig. 11 .

Female ( Fig. 3 ). Body wider than male. Antennae shorter than in male, not reaching posterior margin of pronotum. Pronotum 1.37 times as wide as long, 1.98 times as wide as maximal width of head. Width ratio of pronotum at anterior margin to its maximum to posterior margin 55: 87: 74. Elytra distinctly convex, 1.36 times as long as wide, 1.38 times as wide as maximal width of pronotum. Spurs of protibia subequal in length, inner spur of metatibia narrow, never dilated apically. Ventral surface of tarsi without hair brushes or tufts of setae. Ovipositor as in Figs 14–15 . Spiculum ventrale as in Fig. 16 .

Measurements. Male body length 12.1 mm, width 5.4 mm; female body length 11.9 mm, width 6.7 mm.

Etymology. Derived from Neo-Latin word “ flatus ” (= flat), referring to the rather flat body of the male. Distribution. China: Sichuan province.

Figures

FIGURES 2 – 3. Habitus of Pseudognaptorina flata sp. nov., dorsal view 2. male. 3. female. Scale bar = 1 mm.

FIGURES 4 – 16. Pseudognaptorina flata sp. nov. 4. antenna; 5 – 7. pro-, meso- and metatibiae and tarsi, lateral views; 8 – 10. aedeagus, dorsal, ventral and lateral views; 11. spiculum gastrale; 12. abdominal sternite VIII of male; 13. pronotum; 14 – 15. ovipositor, dorsal and ventral views; 16. spiculum ventrale. (Figs 4 – 13. male; Figs 14 – 16. female) Scale bars = 1 mm.