28 PROCEEDINGS OF TliE NATIONAL MUSEUM vin,. 71 



and thorax black, the face more or less brownish; antennae, legs 

 including all coxae, and the abdomen pale yellowish, the abdomen 

 with a small brownish or blackish spot on each side near apex; wings 

 hyaline. 



Male. — Length 0.55 mm. Scape greatly swollen and dark brown- 

 ish in color; apical one-third of abdomen black; otherwise exactly 

 like the female. 



The size is variable in both sexes, the length ranging from 0.55 mm. 

 to 0.65 mm. in the females and from 0.45 mm. to 0.60 mm. in the 

 males. 



Type locality. — Buitenzorg, Java. 



Cotypes.— Cat. No. 29450, U.S.N.M. 



Described from 6 females and about 150 males mounted in balsam 

 on 12 slides, and 1 female and 34 males mounted on card points. 

 This material was all received by the Bureau of Entomology from 

 W. C. Van Heurn, Buitenzorg, Java, with the information that it 

 was reared from Thrips tabaci along with Thripoctenus hrui Vuillet 

 and was believed to be a secondary parasite. 



Van Heurn published a figure and description of this insect together 

 with some account of its habits* but did not name it. It is at his 

 suggestion transmitted through Dr. L. O. Howard that the writer has 

 undertaken to name it here. 



ASTICHUS PULCHRILINEATUS, new species 



Plate 1, fig. 2 



This species is extremely similar to the description and figure of 

 A. longivittatus Masi " and may possibly be the same, but the females 

 apparently have the abdomen somewhat longer and more slender 

 than indicated by Masi's figare, the ovipositor appears to be a little 

 more prominent, the hyaline band at apex of forewing appears 

 broader, and the head appears to be less narrowed behind the eyes. 

 Both pidchrilineatus and longivittatus differ from typical Aslichus as 

 represented by A. arithmeticus Foerster (of which the National Col- 

 lection possesses one specimen determined by Dr. Franz Ruschka 

 and taken at Bleicherode, Saxony) as follows: The stigmal vein is 

 much more oblique and distinctly longer than the postmarginal, the 

 apical margins of first and second tergites are emarginate at the 

 middle, the dorsum of thorax is very finely and opaquely sculptured, 

 while the infuscation of the forewing is not nearly so dark and is 

 much less broken by hyaline spots. In arithmeticus the stigmal vein 

 is nearly perpendicular to the wing margin, the postmarginal is as 

 long as stigmal, the abdominal tergites are not emarginate, the dor- 

 sum of thorax is weakly reticulated but shining, while the infusca- 



sTijdschrift voor Entomologie, vol. 66, 1923, p. 124. 

 • Boll. ^oc. Knt. Itftl.. vol. 57 . 1925. p. 85. 



