NEW SPECIES OF THY8AN0PTERA—M0RQAX. 



Named in honor of the collector. 



Type.— C&t. No. 15722, U.S.N.M. 



Note. — This species is closely related to Euthrips tritici Fitch from 

 which it may be separated by the difference in coloration of the 

 thorax, the absence of black at the tip of the abdomen, the different 

 relative lengths of the segments of the antennae, and by the smaller 

 number of spines upon costa and veins. 



EUTHRIPS GOSSYPU, new species. 

 Figs. 19-22. 



Female. — Length 1.1 mm. (1 to 1.3 mm.;. General color yellow- 

 ish gray — some specimens almost white. 



Head nearly three-fourths as long as broad and four-fifths as long 

 as pro thorax, slightly retracted therein; slightly broadening behind; 

 anterior margm very nearly straight; back of head indistinctly trans- 

 versely striate. Eyes of medium size, occupying a little more than 

 half the width of the head, yellowish to transparent gray, facets of 

 medium size, sparsely and minutely pilose; ocelli present, well sepa- 

 rated, the posterior ones very close to umer margms of eyes, trans- 

 parent whitish, as large as facets of eye, not margined with crescents 

 inwardly, the anterior ocellus slightly directed forward. A long slen- 

 der brown spine near each posterior ocellus in front and toward the 

 meson. Postocular spmes brown and very nearly as large as those 

 in front of the ocelli. A row of small very light brown spines extends 

 across the dorsum of head back of eyes. Mouth cone reaches nearly 

 to posterior edge of prosternum, its sides straight, tinged with brown 

 and with a very dark brown spot at the tip. First and third seg- 

 ments of maxillary palpi of equal length, the second shorter. Labial 

 palpi slender, the first segment very short. Antennae slightly more 

 than twice as long as head. Relative lengths of segments as follows: 



J_ 1, ± -1- A A -I A 



"6 10 12 11.5 9 12 2 3 



Color: One gray; two yellowish gray, lightest at the base; three 

 to five brownish yellow; six to eight light brown. Spmes upon seg- 

 ments two to five, slender, light brown, those on segment two stout- 

 est. Branched sense cones on upper side of three near the tip and on 

 the under side of four near the tip. 



Pro thorax rounded, only about three-fifths as long as wide; one 

 pair of stout spines at each posterior angle, a similar spine at each 

 anterior angle, midway between meson and spine on anterior angle 

 stands a spine of similar length to those at the angles, between spines 

 on posterior angles and meson on each side stands a row of five spines, 

 only the second one from, the meson being large and conspicuous. 

 Mesothorax very bluntly rounded ; mesonotal plate with one stout 



