Hood — Australian Thysanoptera. 83 



Described from a unique female collected by A. A. Girault at Nelson, 

 North Queensland, April 12, 1914, by sweeping in forest. 



Easily known by the coloration and the absence of an acute lateral tooth 

 on cheeks behind eyes. 



Genus Asemothrips, nov. 

 (tiffrj/jLos, without device; Opif, a wood worm.) 



Head much longer than wide. Eyes moderate in size, rounded. Antennae 

 eight-segmented, the last two segments compactly joined, separated only by 

 an oblique suture; fifth segment obliquely truncate at outer surface of apex. 

 Mouth cone short and broadly rounded at apex, the labrum scarcely sur- 

 passing labium and with sides straight. Prothorax shorter than head. Fore 

 femora swollen and fore tarsi strongly armed in both sexes. Wings of 

 nearly equal width throughout, not narrowed at middle. Bristles short 

 and knobbbed in the type species. 



Genotype: Asemothrips picturatus, sp. nov. 



The type of the present genus is a species of ordinary appearance but 

 one which I have found impossible to assign to any existing genus on account 

 of the union of the seventh and eighth antennal segments, the obliquely 

 truncate apex of the fifth antennal segment, and the short broadly rounded 

 mouth cone. Notwithstanding the form of the wings, which are scarcely 

 narrowed at the middle, the insect is apparently referable to the Haplo- 

 thrips group. 



Asemothrips picturatus, sp. nov. 



Male (macropterous) . — Length about 1.5 mm. Color light yellow, with 

 first two segments of antennae, frons, a longitudinal stripe behind each eye, 

 lateral and dorsal pterothoracic plates, sides of first abdominal segment, 

 all of ninth abdominal segment, and tube, abruptly dark brown, the post- 

 ocular stripe and middle of tube darkest; antennae with apex of segment 5, 

 apical two-fifths of segment 6, and all of segments 7 and 8, light brown; 

 fore femora shaded with brown on outer surface, middle and hind tibiae 

 brown basally, second abdominal segment slightly darkened at anterior 

 angles; wings clear. 



Head about 1.6 times as long as wide, dorsal and lateral surfaces nearly 

 smooth and with a few minute spines; cheeks converging roundly to eyes 

 and more gradually to near base of head, thence subparallel; vertex pro- 

 duced to form a slight hump, and with anterior margin nearly vertical; 

 postocular bristles short, less than half as long as eyes, knobbed, and situ- 

 ated close to sides of head. Eyes about one-third as long as head, prominent 

 and slightly protruding, nearly as wide as their interval. Anterior ocellus 

 directed forward and somewhat overhanging; posterior ocelli situated in 

 front of a line drawn through middle of eyes. Antennae about 1.55 times as 

 long as head; segment 5 prominently obliquely truncate on outer surface 

 of apex; segment 6 with the pedicel correspondingly truncate; segments 7 

 and 8 compactly joined and separated by an oblique suture, segment 8 

 being longer on ventral than on dorsal surface; sense cones disposed as 



