Vol. XXvi] ENTOMOLOGICAL NEWS 73 



Three New Species of Aphelinus (Hym.) 



By E. W. RUST, Assistant Government Entomologist, Lima, 



Peru. 

 Aphelinus capitis sp. nov. 



9. Length, 0.75 mm.; expanse, 1.7 mm.; greatest width of fore- 

 wing, 0.27 mm. 



Antennal scape long and slender, reaching to top of head, slightly 

 compressed laterally and of nearly equal cross section throughout its 

 length except at the extremities where it tapers sharply to the articu- 

 lations; pedicel just a trifle less than half as long as the scape and 

 nearly half again as wide at its widest point, increasing gradually in 

 diameter to a point just distad of its middle where it is half as wide 

 as long; funicle joint I triangular in outline, very small and sometimes 

 quite indistinct, being of less than half the size of funicle joint 2, which 

 latter is of the same diameter as the pedicel and of a hit less than one- 

 third its length; the penultimate joint is from two-thirds to four- 

 fifths as long as the pedicel and just a shade wider, it is also three times 

 as long as the second funicle joint which it just exceeds in diameter; 

 the second or ultimate club joint, which is compressed laterally, is 

 three times as long as the penultimate joint and at least one-third 

 wider (when seen in broad outline), widest just distad of the middle 

 from where it tapers rapidly to a blunt point. A deep constriction 

 occurs between the two club joints separating them quite distinctly. 

 Club, with a few longitudinal keels and (in common with the rest of 

 the antenna) sparsely hairy. 



Eyes hairy. Head and rest of body very similar to A. diaspidis How. 

 both in shape, position and number of hairs or spines and in general 

 sculpture, except that the mesoscutum and mesoscutellum of A. capitis 

 are faintly longitudinally striated instead of showing the slightly tessel- 

 lated pattern of A. diaspidis. 



The forewings, in structure, are nearest like those of A. mytilaspidis 

 How., but differ in that the discal cilia do not appear to be quite so 

 plentiful as in the last named species. In A. capitis there is a greater 

 difference in the length of the cilia on opposite sides of the hairless 

 streak, those distad being seemingly shorter than in A. mytilaspidis 

 and those proximad being slightly longer. The latter cilia, although 

 of about the same numbers as those of A. mytilaspidis, more nearly 

 occupy all of the wing surface proximad of the- hairless streak, thus 

 producing the impression that the wing is less densely ciliated than in 

 A. mytilaspidis. Hind wings as in other species of Aphelinus. 



Color : Head brownish yellow to orange yellow ; eyes blackish ex- 

 cept with strong light through them, when they appear garnet-colored; 

 ocelli dark red ; antennae concolorous with body or a trifle more 



