344 PROCEEDINGS OP THE NATIONAL MUSEUM. vol.43. 



Four sternopleural bristles, the posterior one much the strongest. 

 Four postsutural bristles. Scutellum with three strong pairs of 

 lateral bristles, and a very short pair of subapical bristles in male 

 hardly stronger than rest of dorsal scutellar bristles. First abdomi- 

 nal segment of male with 1 lateral macrochseta, second with 2 lateral 

 and 2 short median marginal, tliird with row of 10 marginal and still 

 'Others below, fourth with 8 marginal counting those below. Female 

 without dorsal bristles on first and second segments, with 1 lateral on 

 each; third and fourth segments like male. Hind tibiae ciliate, with 

 a slightly longer cilia-like bristle in middle which is perhaps better 

 developed in female as a rule. Claws of female about equal to her 

 shortened last tarsal joint, of male a little longer than his elongate 

 last tarsal joint. Apical cell open, ending well before wingtip. No 

 wrinkle or stump at the abruptly rounded rectangular bend of fourth 

 vein, hind crossvein a little nearer to bend of fourth than to small 

 cross vein. 



Reproductive habit, leaf-oviposition ; uterus very long and slen- 

 der, with black elongate microtype eggs somewhat pointed at ends, 

 chorion not honeycomb-reticulate but with alveolae surrounding a 

 central opaque area. 



Type-spedes. — Phasiatacta elongata Townsend. 



PHASIATACTA ELONGATA Townsend. 



Phasiatacta elongata Townsend, Ann. Ent. Soc. Amer., vol. 4, pp. 144, 329. — 

 TD 4019. 



Length of body, 9.5 mm.; of wing, 6.5 rmn. One male and one 

 female, the latter SuUana, Peru, March 25, 1911, on foliage in Rio 

 Chira valley; the former Chapair^, in the Rio Piura valley. May 21, 

 1911, on foliage. 



Face and cheeks silvery-white, the parafrontals deeply golden 

 extending on occiput and upper orbits. First two antennal joints 

 reddish-yellow or yellowish-red, third joint and arista dark brown. 

 Palpi pale brownish-yeliow. Occiput with grayish pile appearing 

 faintly brassy above. Pleurae and outside of anterior femora sil- 

 very poUinose; mesoscutum faintly brassy pollinose in female, 

 decidedly brassy in male, leaving four heavy and practically equal 

 black vittae, the median pair appearing shorter when viewed from 

 behind. Scutellum pale brownish-yellow. Abdomen of female red- 

 dish on sides, tip, and whole of venter; blackish on disk; covered 

 with silvery pollen which has a faint brassy tinge on upper por- 

 tion. Abdomen of male blackish nearly throughout, faintly red- 

 dish on sides of second segment, anal segment tipped with reddish, 

 thickly brassy pollinose above in a submarmorate pattern, leaving 

 median and lateral blackish areas irregularly defined on second and 

 third segments; venter deeply silvery- white pollinose except on sides 



