Dendroiketes corticinus ( Burr, 1908 )

Karthik, C. M. & Kalleshwaraswamy, C. M., 2023, An annotated checklist of earwigs (Dermaptera) of South India with two new records from India, Zootaxa 5330 (4), pp. 561-585 : 563

Dendroiketes corticinus ( Burr, 1908)

Description

Anterior part of body paler than abdomen which is blackish-brown ( Fig. 2a ). Antennae with first and second segments brownish yellow ( Fig. 2b ), hind femora darker at middle, posterior half of pronotum, along inner margin of tegmina, and wings with a yellow stripe ( Fig. 2c ). Body without forceps 14.32 mm in length. Head sutures fine but distinguishable, occiput and frons raised, as broad as long ( 1.69 mm in length and width ( Table 2 )). Antennae 30-segmented, first segment being stout, expanded apically, shorter than distance between antennal bases and equal to combined length of second and third segments; second segment being short, about as long as third; third segment being long, slender; fourth and fifth segments being subconical; and sixth segment and beyond gradually lengthening distally, with a few apical segments thin. Prozona elevated; metazona depressed; pronotum transverse; sides sub convex; hind margin truncate; distinct median sulcus measuring 0.12 mm in length and 1.84 mm in width ( Table 2 ). A broad, triangular scutellum visible, tegmina and wings well-developed with exposed part of wings smooth and longer than tegmina (length 2.46 mm; width 2.31 mm). Legs long and stout, with first section of tarsus shorter than third, fore femora swollen, and middle and hind ones compressed. Parallel-sided, slightly convex, punctate tergites in abdomen. Last thoracic sternite punctate, rounded at the apex and obtuse in centre ( Fig. 2d ). Posterior half of the ultimate tergite is declivent, punctured deeply and densely, and weakly transverse. Anal process smooth and depressed, hind border rounded and finely serrated ( 2.61 mm wide). Forceps strong, depressed, regularly incurved from base to apex ( 2.15 mm length); apex weakly hooked and pointed ( Fig. 2f ). Parameres long, narrowed at apex, and virga and basal vesicles distinguishable on the distal lobes of genitalia ( Fig. 2g ).

Materials examined: INDIA, Karnataka, Shivamogga , 13°58'15"N, 75°34'47"E, 636m, 4.v.2020, Coll. Karthik, C. M., ex. leaf litter ( 5 males) .

Figures

FIGURE 2. Dendroiketes corticinus (Burr,1909) (Male); a) Habitus; b) Left antenna; c) Pronotum, tegmina and wings; d) Thoracic sterna e) Left hind leg; f) Penultimate sternite and forceps; g) Genitalia.