24 INSECUTOR INSCITL^ MENSTRUUS 



site in Chosica Canon, Peru, April 17, 1913, by Mr. E. W. 

 Rust (No. A 3159). 



This species superficially resembles Frankliniella minuta 

 (Moulton) very closely, but is easily distinguished by the ven- 

 tral tympanum on the third abdominal segment of the female. 



Physothrips funestus, new species. (PI. II, figs. 6 and 7.) 

 Female (macropterous). — Length about 1.1 mm. Color dark 

 blackish brown, nearly black, with tarsi, middle apical portion 

 of fore tibiae, apical fourth of antennal segments 3 and 4, and 

 extreme bases of segments 3-5, distinctly paler ; fore wings 

 nearly uniform dark gray-brown, with a minute, median, paler 

 spot at basal fifth. 



Head 0.9 as long as wide, slightly broadest behind eyes, sides 

 slightly arcuate, nearly parallel ; occiput with two or three 

 anastomozing lines ; interocellar bristles very long, about one- 

 third the length of head, situated well within the ocellar tri- 

 angle, though not always as posterior as shown in figure (PI. 

 II, fig. 6) ; a pair of approximate minute bristles in front of 

 anterior ocellus and a slightly larger pair near inner margin of 

 eyes ; postocular bristles minute, subequal. Eyes about 0.6 as 

 long as head and about equal in width to their interval. Ocelli 

 equidistant, subequal in size, posterior pair opposite posterior 

 half of eyes. Antennae about 2.4 times as long as head, form 

 and structure as in figure (PI. II, fig. 7), unusual in that the 

 fourth segment is noticeably longer than the third and the 

 eighth segment nearly half as long as third; entire antenna 

 nearly concolorous with body, except apical fourth of segments 

 3 and 4 and extreme bases of 3-5, which are paler. 



Prothorax very slightly longer than head and about 1.5 

 times as wide as long; pronotum smooth; two strong dark 

 bristles at posterior angles and a prominent smaller pair on 

 posterior margin ; all other bristles small. Wings of fore pair 

 about fourteen times as long as width at middle, nearly uni- 

 form dark gray-brown, with a minute rtiedian paler spot at 

 basal fifth ; costa with about 26 bristles ; anterior vein with 

 three similar bristles in a basal group, followed immediately by 

 another group of six, and then by two more in apical sixth; 



