no. 2068. NEW SPECIES OF INSECTS— OAHAX. . 165 



Host. — Lorema accius. 



Type.— Cat. No. 18335, U.S.N.M. 



Five females from the type-locality, reared from the above-named 

 host by G. G. Ainslie and recorded in the Bureau of Entomology, 

 United States Department of Agriculture, under Webster No. 9498. 



This species is easify separated from the other American forms by 

 the short first joint of the tarsi and the short tibial spurs in which 

 it resembles certain oriental species. 



Subfamily ETXLOFHIISr^kE. 

 DIAULINTJS INSULARIS, new species. 



Female. — Length about 1.1 mm. Similar to Diaulinus pulchripes 

 Crawford, from which it may be separated by the stronger and deeper 

 punctation of the mesoscutum and scutellum, by the furrows of the 

 scutellum not being nearly as far apart as the length of the scutellum, 

 by the propodeum being obviously reticulated, though very finely 

 so, by the marginal vein being slender, the postmarginal a little 

 longer than the stigmal, and by the narrower bands of black on the 

 tibiae, these rarely extending much beyond the middle of the tibiae. 

 Readily distinguished from begini Ashmead by the stronger sculp- 

 ture and the broader bands on the tibia?. 



Blue-green with brassy reflections, the latter strongest on the pro- 

 podeum and base of the abdomen; antennal scape pale except at 

 extreme apex, the pedicel and flagellum brown; punctures of the 

 scutellum slightly finer than those of the mesoscutum but very dis- 

 tinct, parallel furrows of the scutellum about as far apart as half the 

 length of the scutellum; wings hyaline; all femorae blackish at base, 

 their apices broadly white or whitish; all tibiae banded with black, the 

 black band extending to or a very little beyond the middle, a narrow 

 band at the extreme base and the apical half whitish; two apical 

 joints of the tarsi dark; abdomen mostly smooth. 



Male. — Essentially like the female. 



Type-locality. — Rio Pedras, Porto Rico. 



Host. — Agromyza inaequalis Malioch. 



Type.— Cut. No. 18336, U.S.N.M. 



Described from nine females and four males from the type-locality 

 reared by T. H. Jones. 



Subfamily TETRASTICHINAE. 

 CERATONEURA PRETIOSA, new species. 



Agrees with the description of the genus except that the scutellum 

 shows two faint longitudinal grooves similar to those in species of 

 Tetrastichus but less distinct than in that genus. 



Female. — Length about 2.25 mm. Antennal pedicel about two- 

 thirds the length of the first funicle joint; ring joints each nearly as 

 long as thick; first joint of funicle the longest of the funicle joints, 

 about twice as long as thick, third joint the shortest and scarcely one 



