Pseudognaptorina obtusa, Shi & Ren & Merkl, 2005

Shi, A., Ren, G. & Merkl, O., 2005, Two New Species Of Pseudognaptorina Kaszab, 1977 (Coleoptera, Tenebrionidae: Blaptini) From The Tibet Plateau, Acta Zoologica Academiae Scientiarum Hungaricae 51 (3), pp. 163-170 : 166-169

Pseudognaptorina obtusa sp. n.

( Figs 13–24 , 27–28, 30)

Description. Body black, weakly shining; apical segments of antennae and tarsi reddish brown. Male body length 10.2–10.8 mm, width 5.3–5.5 mm; female body length 11.1–11.6 mm, width 6.3–6.4 mm.

Male (Fig. 27). Anterior margin of clypeus straight. Outer margin of head with noticeable obtuse-angled incision above antennal base. 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 clear. Antennae, when posteriorly extended, reaching pronotal base. Length (width) ratio of antennomeres 2 to 11 as follows: 9(9): 25(9): 13(9): 13(9): 12(8): 14(10): 13(13): 13(14): 12(14): 18(15).

Pronotum ( Fig. 13 ) transverse, 1.31–1.39 times as wide as long, widest behind the middle, 1.84–1.85 times as wide as head. Ratio of pronotal width at anterior margin to its maximum width and width at base (n = 2) 0.57: 1.00: 0.91, on the average. Outer margins of pronotum arcuately narrowing to anterior margin; shallowly sinuate in posterior 1/4; bordered along entire length. Anterior margin shallowly arcuately emarginate, bordered only laterally, base straight, not bordered. Anterior angles same, ventral view

Figs 25–28. 25–26 = Pseudognaptorina obtusa sp. n.: 25 = male, 26 = female; 27–28 = P. exsertogena sp. n.: 27 = male, 28 = female of pronotum obtuse, rounded apically; posterior ones almost rectangular. Pronotal surface between outer margins slightly convex, with clear median depression in anterior half; densely covered with fine punctures. Prothoracic hypomeron smooth, covered with longitudinal rugae. Prosternum in front of procoxae vertical, with intercoxal process steeply sloping behind coxae.

Elytra elongate-oval (1.46–1.47 times as long as wide), widest before the middle, 1.33–1.36 times as wide as pronotum. Epipleural carina visible from above in more than anterior half and at elytral apices. Elytral surface between outer margin of epipleura and sutural margin weakly convex, sparsely covered with fine punctures and irregular wrinkles. Epipleural surface smooth, densely covered with fine wrinkles. Abdominal ventrites covered with punctures and golden setae. Abdominal ventrites 1 to 3 covered with wrinkles.

Legs ( Figs 15–17 ) strong, length (width) ratio of pro-, meso-, and metafemora 79(22): 88(21): 100(20); that for corresponding tibiae: 71(10): 72(10): 96(13). Upper edge of inner surface of profemur with angularly arcuate prominence. Mesotibiae slightly incurved. Plantar surface of pro- and mesotarsomeres 1 to 3 with hair brushes; protarsomere 4 with apical tuft of pale hairs divided into two parts on plantar surface. Metatibiae incurved, gradually widening toward apex, length (width) ratio of metatarsomeres 1 to 4 is as follows: 25(6.5): 15(6): 13(5.5): 23(5.5).

Aedeagus ( Figs 18–20 ): length 2.5 mm, width 0.5 mm (when body length 10.2 mm). Parameres strongly elongate, 0.92 mm long, 0.33 mm wide, with outer margins very slightly sinuate. Spiculum gastrale as in Fig. 21 . Apical margin of abdominal sternite 8 sinuate ( Fig. 22 ).

Female (Fig. 28). Body longer and wider. Antennae, when posteriorly extended, reaching posterior 1/4 of pronotum. Pronotum 1.37–1.52 times as wide as long, 1.85–2 times as wide as head. Ratio of pronotal width at anterior margin to its maximum width and width at base (n = 2) 0.56: 1.00: 0.91, on the average. Elytra more swollen than in male, 1.28–1.29 times as long as wide, 1.32–1.44 times as wide as pronotum. Outer margin of epipleura visible from above in anterior 1/3. Lower spur of protibiae small and pointed, the upper one blunt apically, noticeably larger than the lower one, but not particularly enlarged. Apical spurs on metatibiae of female narrow and parallel sided. Hair brushes or tufts of light setae on plantar surface of tarsal segments absent. Ovipositorial lobes ( Figs 23–24 ) rounded apically, densely covered with setae.

Type material. Holotype male, CHINA: Tibet, Markam county , 3800–4000m, N 29°36’ E 98°24’, 12 Jun. 2004, Ai-Min Shi and Yi-Bin Ba leg. ( MHBU). First label of the holotype (written with Chinese characters) see Fig. 30 . Paratypes: 1 male ( HNHM) and 2 females ( MHBU), same data as holotype .

Etymology. Named after the prominence on the upper edge of the inner surface of profemur.

Diagnosis. The new species resembles Pseudognaptorina exsertogena sp. n., with the following differences: genae slightly convex; prosternum in front of procoxae vertical; the upper edge of the inner surface of profemur angularly arcuate prominence; mesotarsomeres 1 to 3 with hair brushes on plantar surface.

Distribution. China: Tibet.

Figures

Figs 13–24. Pseudognaptorina obtusa sp. n., 13 = pronotum; 14 = antenna; 15 = fore leg; 16 = middle leg; 17 = hind leg; 18 = apical part of aedeagus in dorsal view; 19 = same, ventral view; 20 =aedeagus in lateral view; 21 = spiculum gastrale; 22 =abdominal sternite 8; 23 = ovipositor in dorsal view; 24 =

Figs 29–30. First labels of the holotypes: 29 (left) = Pseudognaptorina exsertogena sp. n.; 30 (right) = P. obtusa sp. n.