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PROCEEDINGS OF THE NATIONAL MUSEUM 



VOL. 71 



with a single median tooth, and the surface of head and body is 

 smoother and shinier, the scutellum entirely smooth and polished. 

 In the present species the mandibles are very nearly as in Xesmatia, 

 while the mesoscutum and scutellum are distinctly shagreened as in 

 Ooencyrtus. While representing a very distinct species in the genus 

 the agreement with other species of Ooencyrtus in the essential 

 generic characters as well as in its habits is such that I believe it is 

 properly placed in that genus. 



Differs from all other species in the genus known to the writer by 

 the expanded scape as well as by the more strongly clavate and 

 varicolored flagellum (fig. 1). 



Female. — Length 0.7 mm. Head as broad as thorax; fronto- 

 vertex moderately narrow, a little more than twice as long as broad, 

 finely reticulate-punctate and somewhat shining; eyes weakly pilose, 

 diverging below; ocelli small, in a nearly equilateral triangle; man- 

 dibles subtruncate at apex, with a very weak ventral tooth, the 

 middle of apical margin very slightly more prominent than either 



the ventral or inner angles but not 

 forming a distinct tooth; anten- 

 nal scape expanded beneath, sub- 

 triangular, about twice as long as 

 broad and broadest near or a little 

 below the middle; pedicel twice as 

 long as thick at apex; flagellum 

 strongly clavate, the club much 

 broader than the funicle and as 

 long as funicle; first funicle joint a 

 Uttle longer than broad and distinctly much narrower than the pedi- 

 cel, second to sixth inclusive broader than long and successively 

 increasing in width, the sixth about as broad as apex of pedicel; funi- 

 cle joints hairy, the hairs arranged in a single more or less regular 

 whorl near the apex of segment and about twice as long as the seg- 

 ment; club nearly twice as broad as sixth funicle joint, elongate oval 

 and compact, the dividing sutures distinct but not deep, and the sur- 

 face of all three segments evenly covered with hairs which are much 

 shorter and finer than those of the funicle; mesoscutum about twice 

 as broad as long, distinctly finely reticulate-punctate or shagreened, 

 somewhat shining, and weakly pilose; scutellum similar but a little 

 more finely sculptured and subopaque above, smooth and polished 

 apically; propodeum very short and finely shagreened; pleura sculp- 

 tured and subopaque; stigmal vein a little longer than marginal, 

 very slender at base, the stigmal knob normal; marginal longer than 

 broad; disk of wing sparsely ciliated basad of hairless streak, uni- 

 formly and more densely ciliated beyond, the hairless streak moder- 

 ately broad, open behind, a single row consisting of about eight 



Fig. 1. 



-Ooencyrtus l.vtiscapus Gah.^n, antenna 

 of female 



