Mesothrips swezeyi, Moulton, 1942

Moulton, Dudley, 1942, Thysanoptera: Thrips of Guam, Insects of Guam I, Bernice P. Bishop Museum Bulletin, pp. 7-16 : 13

17. Mesothrips swezeyi , new species.

Holotype female (?): head, thorax and fore legs blackish brown, abdomen, middle and hind legs black with joints of legs lighter. Antennae uniformly blackish brown; prominent spines light yellow, almost clear. Wings light brown; forewings with a median dark streak that ends in a broadened cloudy area at about two thirds length of wing.

Head almost twice longer than width at eyes, where it is broadest, with cheeks almost straight and narrowed toward base; cheeks with several moderately short stout spines; eyes semiovate. Antenna with segments 3 and 4 elongate clavate, with 4 somewhat larger; 8 slightly constricted at base, clearly separated from 7. Anterior margin of prothorax almost straight; prothorax with a median, full-length thickening; postangular spines alone prominent, others small, all with pointed tips. Fore femora greatly enlarged, each fore tarsus armed with a stout, broad-seated tooth. Wings long, somewhat narrowed in the middle, fore pair with 32 double fringe hairs. Spines on sides of abdomen becoming very long and prominent on segments 6 to 9. Tube almost as long as head, more than four times longer than width at base.

Total body length 2.87 mm.; head length 0.485 mm., width across eyes 0.264 mm., near posterior margin 0.220 111111. Prothorax length 0.264 mm., width not includiQg coxae 0.47 mm.; tube length 0.44 mm., width at base 0.102 mm. Fore femora length 0.47 mm., width at middle 0.19 mm. Antenna! segments length (width): II, 80 (43); III, 106 (46); IV, 126 (50); V, 113 (46); VI, 96 (33); VII, 80 (30); VIII, 56; total 690 microns.

Upi, May 5, under bark of Hibiscus tiliaceus , holotype female (?), Swezey ( 5465 ).

This species may be separated from jordani by its uniformly blackish brown antennae, in jordani antenna! segments three to eight are yellowish brown. In jordani also there is a thickened ring at base of head while this is wanting in swezeyi .