80 Bulletin of the Brooklyn Entomological Society Vol. XVI 



under the bark of black locust trees in October, 1920, by Miss 

 Evelyn Osborn. 



Type in the author's collection ; paratypes in the National Mu- 

 seum, the collection of the Brooklyn Entomological Society, and 

 of the N. Y. State College of Forestry. 



Trichotlirips salicis n. sp. 



Female. General color dark brown ; tarsi and antennal 

 segment 3 light brown. Measurements: Total body length 

 2.8 mm. ; head — length 0.38, breadth 0.28 mm. ; prothorax — 

 length 0.24 mm., breadth 0.52 mm.; mesothorax — breadth 

 0.53 mm. ; abdomen — greatest width 0.64 mm. ; tube — length 

 0.28 mm., width at base o.io mm., at apex 0.05 mm. Anten- 

 nae — segment i, 48; 2, y2; 3, 118; 4, 100; 5, 100; 6, 90; 

 7> 53 > 8, 53 microns. Total length 0.62 mm. 



Head about 1.3 times as long as wide, cheeks slightly 

 arched, bearing minute setae. Eyes small, occupying about 

 .2 the length of the head. Ocelli minute, posterior pair oppo- 

 site the anterior third of the eyes. Antennae about 1.6 times 

 the length of the head. Third antennal segment noticeably 

 longer than any of the others, 7 and 8 of about equal length, 

 but varying even in the same individual. Mouth cone 

 rounded at the apex, reaching two-thirds across the pro- 

 sternum. 



Prothorax considerably shorter than the head; posterior 



angles well rounded, a pair of stout spines on the coxae. 



Fore femora but slightly enlarged. Fore tarsus without a 



tooth. 



' Pterothorax subrectangular, sides arched. Wings wanting. 



Abdomen short and thick; tube moderately long and slen- 

 der. Bristles prominent on only the last two abdominal 

 segments, almost colorless. 



Male similar to the female, but smaller. Measurements : 

 total body length 1.8 mm.; head — length 0.33, breadth 0.24 

 mm.; prothorax — length 0.21 mm., breadth 0.38 mm.; meso- 

 thorax — length 0.24, breadth 0.43 mm. ; abdomen — greatest 

 width 0.50 mm.; tube — length 0.21, width at base 0.07, at 

 apex 0.04. Antennae — segment i, 48; 2, 67; 3, 100; 4, 91; 

 5, 81; 6, 72; 7, 53; 8, 44 microns; total length 0.50 mm. 

 Fore tarsi with heavy, almost straight spines. Post-ocular 

 bristles slender, projecting beyond the eyes. Terminal 

 bristles shorter than the tube. 



Described from a single female and a single male collected from 



