Gnaptorina felicitana Reitter, 1887

Zhu, Xi-Chao & Ren, Guo-Dong, 2014, The larvae of Gnaptorina felicitana and Agnaptoria amdoensis of the tribe Blaptini from China (Coleoptera: Tenebrionidae), Zoological Systematics 39 (2), pp. 275-282 : 276

3.1 Gnaptorina felicitana Reitter, 1887 ( Figs 1–14 )

Body elongate cylindrical, tawny, shiny. Body wall ossifying. The anterior and posterior border of the first tergite and the posterior borders of 2–11 tergites covered with dark brown platbands, on which blanketed with fine longitudinal grains, and other part of the 1–11 tergites with grainy shallow wrinkles. Median line is obvious at the first 4 segments. Besides the last segment, each tergite has 6 pairs of long hairs, of which 3 pairs are at the anterior section, and 3 other pairs are at the posterior section ( Fig. 1 ).

Clypeus center with 4 hairs. Epicranial stem Y-shaped. The center of anterior rim of frons with 1 pair of hairs. Vertex with 6 hairs, of which 2 are at the apexes of epicranial stem, and 4 are at the posterior rim of head. The sides of head with sparse hairs. Ocelli 4 in number ( Fig. 2 ). Antennae 3-segmented; first and second segments are similiar in shape; sensation circle at apex of second segment C-shaped ( Fig. 3 ); third segment short cylinder, with 1 long hair at peak; basis of antennal process with 3 long hairs. Labrum slightly convex at anterior margin, with 6 thorn-like hairs at the back center, and 2 center setae and 6 lateral periphiral setae at anterior rim ( Fig. 4 ). Epipharynx with sparse lateral periphiral setae; sting area with 2 pairs of short thorn-like processes, and 2 basal thorns; there are 4 small mastoids between the basal thorns, and 6 upon them, and the 10 mastoids arrange in 2 columns. The center of the connected section between epipharynx and clypeus with 2 highly ossified triangular torma ( Fig. 5 ). Two hairs on the basal membrane of mandibles, and 2 on the crest. Molar with 2 leaf-teeth, deeply concave at middle, and flat at base ( Fig. 6 ). Sclerome bending chair shaped, and highly ossified ( Fig. 7 ). Labial palp 2 segments, ligula with 2 thorn-like hairs at apical part; prementum with 2 long hairs, and mentum and submentum with 10 long hairs that distribute symmetrically ( Fig. 8 ). Maxillary palp 3-segmented, with 1 hair respectively at interior and lateral sides of the second segment ( Fig. 9 ).

Foreleg stronger than meso- and metaleg. All the tarsus differentiate into highly ossified tarsungulus and weakly ossified base. The interior and lateral sides of protarsus with 1 short thorn-like process respectively; lateral sides of meso- and metatarsus with 1 short thorn-like process. Inner margin hairs of each segment pectinated. The inner margin hairs formula of foreleg is 4: 7(2): 2(2); lateral sides of tibiae with 2 short thorn-like processes; lateral sides of femora with 2 hairs; trochanters with 3 hairs ( Fig. 10 ). The inner margin hairs formula of meso- and metaleg are 3–5: 4–5(2): 2(2); lateral sides of tibiae with 2 short thorn-like processes; lateral sides of femora with 2 hairs; lateral sides of trochanters with 3 hairs ( Fig. 11 ). 9th abdominal segment triangular, and its width about 1.3 times wider than length; the sides contract to arched apex; the basal part of its back with 2 long hairs and 4–6 short thorn-like hairs each side; sparse long hairs at its venter. Urogomphi short cylindrical, is about 1/15 as long as the ninth abdominal segment; its apex is truncatus, slightly upwarp, with 2 thorn-like processes on and 2 long hairs at its venter ( Figs 12–14 ).

Larval material examined. Four larvae, Tianjun , Lasaer , Qinghai (37°10′N, 98°52′E; elev. 3 733 m), 28 July 2012, collected by Guo-Dong Ren and Xi-Chao Zhu.

© Zoological Systematics, 39(2): 275–282

Figures

Figs 1–14. Characteristics of Gnaptorina felicitana Reitter. 1. Larva. 2. Head. 3. Sensation circle of antenna. 4. Labrum. 5. Epipharynx. 6. Right mandible. 7. Sclerome. 8. Labium. 9. Maxillary palp. 10. Foreleg. 11. Mesoleg and metaleg. 12. Urogomphi in anterior view. 13-14. Ninth abdominal segment. 1–2, 4, 6a, 14. Dorsal view. 6b, Ventral view. 7, 13. Lateral view. 10–11. Posterior view. 12. Anterior view. Scale bars = 1mm.