Gnamptodon sp.

Figs 4 A–D

Colour (Figs 4A–C, E): Head, mandible (except tip black), scape of antenna, two basal metasomal segments, legs, tegula clear yellowish, mesosoma and rest of metasomal tergites shiny black; antennal pedicel and basal two flagellomeres reddish brown, rest of flagellomeres black (broken); palpi whitish. Wings hyaline, pterostigma brown, veins partly pale brown (Fig. 4D).

Head (Figs 4B, C). With scattered fine, whitish, appressed setae; antenna filiform, F1 about 1.29× F2; F1 and F2 about 4.0× and 3.0× as long as wide, respectively; face convex when seen in lateral view; vertex coriaceous, rest of head smooth; malar space 1.3× as long as basal width of mandible.

Mesosoma (Fig. 4A). Length of mesosoma 1.5× as long as its maximum width; all smooth and shiny, with few scattered whitish setae; mesoscutum without median sulcus, notauli short, not reaching middle of mesoscutum; scutellar suture narrow, linear; propodeum smooth, without median longitudinal carina, with slightly roundly protruding postero-lateral corners. Fore wing (Fig. 4D) hyaline, with brownish pterostigma and pale brown veins, radial cell short, distance between fore wing apex and apex of marginal cell 2.2× length of 1R1; vein r very short, slightly shorter than vein 3–SR; vein SR1 7.0× as long as vein 3–SR; pterostigma 1.7× as long as 1R1; 1CU1:2CU1= 8: 62; vein SR1 slightly curved.

Metasoma (Figs 4A, E). Smooth and shiny, with few scattered setae; T1 smooth, widened posteriorly, apical width 2.0× basal width, 0.6× as long as its apical width; T2 with a deep, linear transverse sulcus, with a transverse elevation close to basal margin, median length of basal elevation 0.4× median length of the rest of tergite; T3 shorter than T2 (0.8×).

Material examined. 1♂, KSA: Jazan (Farasan Islands, Park 2), 16.715789N 42.080407E, 5. iii. 2017, sweep net, leg. Usama M. Abul El-Ghiet & Tarek M. El-Sheikh.

Remarks. In the present study, the subfamily Gnamptodontinae is recorded for the first time for the Arabian Peninsula from Farasan Islands (Jazan, Kingdom of Saudi Arabia). The specimen does not agree with any of the Afrotropical species included in van Achterberg’s key (1983), or those of Fischer’s (1987). However, because of the bad condition of the specimen, we have refrained from allocating a species name until more specimens are collected.