INSECUTOR INSCITI^ MENSTRUUS 9 



Heterothrips analis, new species. (PI. I, figs. 4 and 5.) 



Female (macropterous). — Length about 1 mm. Color dark 

 blackish brown, with tarsi, proximal and distal ends of mid 

 and hind tibiae, all of fore tibiae, distal third of fore femora, 

 and antennal segments 3-5, very pale grayish yellow. 



Head about 1.4 times as wide as median dorsal length and 

 nearly 0.9 as long as prothorax, widest about midway be- 

 tween eyes and base, cheeks rounded ; surface with a few 

 minute spines, impressed and transversely rugose in front 

 of anterior ocellus, smooth between ocelli, and with about 

 eight anastomozing striae behind ocelli ; frontal costa with 

 deep U-shaped emargination ; ocellar area not delimited by 

 chitinous lines. Eyes setose, about 0.6 as long as head, slightly 

 wider than their dorsal interval, not bounded behind by a 

 chitinous line. Ocelli of posterior pair twice the diameter of 

 anterior ocellus, about half as wide as their interval. Antennae 

 about 2.7 times as long as head ; segment 3 very slender, about 

 3.6 times as long as greatest width, with deep incisions at basal 

 fifth and third ; 4 about half as wide as long, roundly tapering 

 to base; 5-8 more or less barrel-shaped, with sense cones, 



5 with indications of a brief pedicel; 9 about three times as 

 long as wide, obliquely truncate at base, its axis tipped out- 

 ward from that of rest of antenna; segments 1 and 2 slightly 

 lighter in color than head, 2 pale grayish yellow in apical half ; 

 3-5 very pale grayish yellow, or 5 slightly infuscate apically; 



6 blackish brown, paler basally ; 7-9 blackish brown. 

 Prothorax about 1.2 times as long as head and a little less 



than twice as wide as long, sides and posterior margin rounded, 

 anterior margin nearly straight ; notum with a few incon- 

 spicuous bristles, its surface closely transversely striate with 

 anastomozing lines which are about half as numerous as in 

 H. sericatus Hood. Wings of fore pair nearly half as wide 

 at middle as near base, the greatest subbasal width (exclusive 

 of scale), less than one-ninth the length of wing; costal mar- 

 gin, anterior vein, and posterior vein with about 34, 28, and 

 22 short, stout spines, respectively. 

 Abdomen stout ; pubescence dense, disposed on close anasto- 



