PROC. ENT. soc. WASH., VOL. 21, NO. 5, MAY, 1919 !()< 



sclerite in front of mouth (tormae), an indistinct wide interrupted dorsal 

 stripe on abdomen, and the tarsi. Front of male almost one-third the head- 

 width, that of female hardly wider, male with usually at least one very minute 

 inner (cruciate) bristle; ocellar triangle small; parafrontals with light-brown 

 pollen, changing to faintly silvery above antennal insertion; transverse im- 

 pression wide, rather soft and wrinkled; bucca half the eyeheight. 



Thoracic chaetotaxy: dorsocentrals 4-2, anterior acrostichals only hair- 

 like, humeral 2, interhumeral 1, posthumeral 1 , notopleural 2, intra-alar 1', 

 supralar 1, prealar at largest half the following, but much reduced in sonic 

 cases, even absent, scutellar 2 pairs, sternopleural 1-1, prothoracic 1 large. 



FIG. 1 Pergandia apivora ALDRICH head of male 



Front tibia with one bristle above middle on outer hind side, and one 

 below middle on front; middle tibia with one stout bristle on outer front 

 below middle, one on outer hind and one on inner hind at about the same 

 level, above the latter two are two directly behind ; hind tibia of male with 

 a few delicate cilia on inner and outer flexor, 3 behind and 5 on outer hind; 

 in the female the hind tibia has 2 very small on outer flexor, 2 on hind and 3 

 on outer hind. 



Abdomen of male broad at base, deep and a little compressed apically, 

 the hypopygium rather large; fifth sternite excised in a deep I", the arms 

 convergent and ending in a sharp, curved point, laterad of which are a few 

 bristles; a short lunule of the fifth tcrgite is visible; first genital segment rather 

 prominent, with a few bristles; second genital segment of moderate size, 

 hairy; inner forceps very short, apparently coalescent, outer forceps very 

 long and slender, almost parallel, the tips ascending and divergent; penis 

 very long and slender, jointed at middle, almost attaining the hind coxae. 



Female genitalia not much visible, retracted; the penultimate segment 

 bears a dense row of hairs which curl over the apex, last segment with a IV \\ 

 thorns below. 



