THE THYSANOPTEKA OF CALIFORNIA. 47 



2. Genus .aJOLOTHIlIPS Haliday.« 



Head about as broad as long-. Ocelli present in both sexes. 

 Antenn{\3 nine-segmented, the last four segments closely joined and 

 together shorter than the one preceding; the third segment longest. 

 Maxillary palpi three-segmented and geniculate. Prothorax about as 

 long or a little longer than the head, without large bristles. Legs 

 veiy long and slender; fore femora somewhat thickened in both sexes; 

 fore tibioe usually unarmed, although sometimes armed; second fore 

 tarsal Segment in both sexes with hooklike appendage. AVings usu- 

 ally present in both sexes; fore wing somewhat narrowed before the 

 middle; fore part of ring vein furnished with very short hairs, which 

 hardly overreach the edge of the wing and which increase in length 

 toward the tip. Fore wings white, with dark cross or longitudinal 

 bands. First abdominal segment in the males is much longer than the 

 second, and the ninth is drawn out at the hind angles into short clasp- 

 ing organs or hooks. 



(2) JEolothrips kuwanaii, new species. (PI. I, figs. 5-S.) 



lleasurements : Head, length 0.13 mm. (varxing to 0.16 mm.), width 

 0.17 mm. (to 0.18 mm.); protliorax, length 0.10 nmi., width 0.20 nun.; 

 mesothorax, width 0.80 nun.; total body, length 1.66 mm. Antenna^: 



1, 36//; 2, olyu; 3, 84yu; 4, 81/<; 5, 69yu; 6, 7, 8, and 9, .51/r, total, 0.37 

 mm. Color of insect brown — sometimes dark brown — with conspicu- 

 ous red pigment blotches, this red showing especially vivid through 

 the membranous parts between the segments. 



Head aV)out as wide or only a little wider than long, rounded in front 

 and only slightly elevated between basal segments of antenna^; cheeks 

 arched; back of head faintly cross-striate with one especialh' prom- 

 inent line near posterior margin; with several not prominent spines. 

 Eyes prominent, black; with large facets, pilose. Ocelli present, 

 placed well forward on anterior part of head, posterior ocelli contig- 

 uous with inner margin of eyes, orange-yellow and margined inwardly 

 with deep orange crescents. Mouth-ante long, reaching to posterior 

 margin of prothorax, pointed bluntly; maxillary palpi three-segmented, 

 basal segment large, terminal one very small. Antennx nine-seg- 

 mented, two and one-half times as long as head; brown, unicolorous 

 with body except segment 3, which is lemon-yellow shaded light-brown 

 at tip; all segments except basal one thickly and uniformly clothed 

 with short spines, those on tip of 2 are stoutest, spines on segments 1, 



2, 4, and 5 are brown, those on 3 and style are white; sense area on 3 

 long and slender, on -1 a similar larger area; a simple sense cone on 

 lower side of segment 6 near tip. 



«Genua modified to include California forms. J'Mlothrips kuirnnaii differs only in 

 minor details from the ^Eolothrips of other writers, so that it seems best to extend 

 this genus rather than to create a new one. 



