SOME NEW THYSANOPTERA FROM SOUTHERN 

 CALIFORNIA, I 



D. L. CRAWKORD. 



In collections made by the writer in the vicinity of Claremont, ten different 

 species are represented, three of which are new, besides a new variety of a 

 species previously described, and one new genus.. 



Ankothrips, new genus. 



Antennae strongly geniculate, with the tip of second segment strongly 

 produced inwardly beyond insertion of third (Fig. 45 I). 



Head broader than long, reticulated posteriorly ; ocelli present in both 

 sexes. Antennae nine-segmented, all segments free ; without long spines. 

 Maxillary palpi three-segmented ; labial palpi two-segmented. Prothorax 

 shorter than head, with bristles on both anterior and posterior angles. Fore- 

 femora thickened in both sexes. Wings present in both sexes ; the forewing 

 with two longitudinal yeins and five cross veins ; anterior margin with a row 

 of unusually strong spines. Anterior wings colored a uniform pale brown; 

 posterior wings clear white. Abdomen with several stout spines on posterior 

 angles of each segment ; last two segments with extremely long strong bristles. 



Ankothrips robustus, n. sp. 



Average length, 1.46 mm. General color, dark brown to black. 



Head (Fig. 45 C) somewhat wider than long, rounded and slightly nar- 

 rowed anteriorly; with subrectangualr projection over insertion of antennae 

 bearing two spines ; cheeks arched ; back of head reticulate ; with several very 

 long spines around the eyes. Eyes prominent, black, coarsely facetted, slightly 

 pilose. Ocelli present, placed well forward ; posterior ocelli nearly contiguous 

 with inner margin of eyes. Mouth cone reaching five-sixths the length of 

 prothorax; bluntly pointed; maxillary palpi with terminal segment very small. 

 Antennae (Fig. 45 H) less than twice as long as head, brown, unicolorous 

 with body ; each segment with from six to ten small spines on distal end ; small 

 sense areas on segments four to seven. 



Prothorax (Fig. 45 C) about twice as wide as long and shorter than head; 

 with two large spines on each anterior and posterior angle, and two midlaterals 

 on each side ; with a row of twelve conspicuous spines on posterior dorsal mar- 

 gin and several scattered on dorsal surface. Thorax broadest across meso- 

 thorax. Metathorax tapering roundly from mesothorax to abdomen. Legs 

 (Fig. 45, G, F, and E) dark brown, a trifle lighter than the body; clothed rather 

 sparsely with bristles ; fore-legs very large, with femora and tibiae strongly 

 thickened ; fore-coxae with several large conspicuous spines ; fore and second 

 tibiae with two long spines at tip, and hind tibiae with several ; tarsi with only 

 a few spines. Forewings (Fig. 45 A) broadly rounded at tip, and somewhat 

 narrowed after the mid-cross vein ; with two ])romincnt longitudinal veins 



