286 



Annals Entomological Society of America [Vol. I, 



Prothorax very slightly shorter than greatest width of head, and (including 

 coxce) about twice" as wide as long, with a prominent median groove; surface 

 faintly reticulate; usual spines all present, the pair at the posterior angles much 

 the longest, nearly as long as the postoculars. Pterothorax sub-rectangular, 

 slightly wider than long, and slightly broader than prothorax; anterior corners 

 projecting slightly beyond the lateral margins. Wings present, short, reaching 

 to posterior margin of sixth abdominal segment. Legs without conspicuous 

 spines; fore femora slightly more than half as wide as greatest width of head; 

 fore tarsi armed each with a short broad tooth. 



Fig. 9. 

 1. — Idolothrips armatus sp. nov. ; a, head and prothorax, male, x67; b, c, 

 left fore tarsus, male, x93, showing variations; d, left fore tarsus, female, x93. 

 (J. D. H., del.) 



2. — Idolothrips armatus sp. nov., female, head, x67. (J. D. H., del.) 

 ;3. — a, Idolothrips armatus sp. nov., female, right antenna, x67; b, Idolo- 

 thrips tuberculatus sp. nov., female, right antenna, x67. (J. D. H., del.) 



Abdomen long, very slender, lanceolate, about 1.4 times as wide as ptero- 

 thorax, and about four times as long as its greatest width; widest at segment 2, 

 thence tapering evenly to base of tube. Tube slightly shorter than head, 

 tapering evenly from base to apex; surface not spinose ; terminal bristles much 

 shorter than tube, brown or black at base. Spines on segments 5-8 one-third 

 as long as tube; those on segment 9 nearly as long as tube. 



Measurements: — Total length 3.0-3.(3 mm.; head, length .56 mm., width 

 .22 mm.; prothorax, length .22 mm.; width (including cox^e) .40 mm.; ptero- 

 thorax, width .45 mm. ; abdomen, width .61 mm. ; tube, length .50 mm. ; width 

 at base .1 18 mm. ; at apex .059 mm. Antennae: 1, 53/(; 2, 76/(; 3, 165/(; 4, 140«; 

 5, 123/(; 6, 104/(; 7, 73/r, 8, 78/(; total, .81 mm. ; width, 42 il. 



Male. — Larger than female (length 3.3-3.9 mm.). Fore tarsi yellow; fore 

 tibiae yellow along middle of inner surface, becoming concolorous with body 

 laterally and basally. 



Head about 2.8 "times as long as wide (2.77-2.92). widest across eyes; genal 

 spines inconspicuous, the pair just behind the eyes largest. Eyes larger and 



