134 Psyche [October 



vinia-\\ke). First genital segment (notiim) of female not divided 

 into two lateral lips. 



(cf.) Length, 7 to 11 mm. 



Head: Viewed from side parafrontals and genae with dark re- 

 flections. Breadth of front at its narrowest part about three- 

 sevenths eye width; cheek height about one-fourth that of eye. 

 Front prominent ; frontal vitta at its narrowest part usually greater 

 than twice the width of each parafrontal, its sides drawn in at 

 base and converging backward in a slight curve. Second and 

 third antennal segments pinkish orange; third one and one-fourth 

 to one and one-half times length of second; arista shortly plumose 

 to beyond middle, hairs on lower side continuing farthest out- 

 ward. Palpi, dull orange. Chaiotaxy. Lateral verticles ab- 

 sent, virbrissge inserted on line of oral margin. 



Thorax: Metanotum clothed with short, reclinate bristles. 

 Hairs covering anterior spiracle usually dark above, light toward 

 base of spiracle, or base of hairs dark and tips light; those of ante- 

 rior margin of posterior spiracle may be dark below and light above 

 or almost entirely light colored; those of spiraculaf cover very 

 light and often tinged with brown centrally at base. 



Wings: Bend of fourth vein essentially a right angle; anterior 

 cross-vein slightly more basal than end of first longitudinal ; third 

 vein with bristles near its base that may extend more than half 

 way to anterior cross vein; costal spine short; section III of costa 

 at least equal to section V; fifth vein continued beyond junction 

 with posterior cross- vein; alulae fringed with hair; calypters whit- 

 ish: but posterior one is often more or less smoky, margin with 

 dark hairs at bend at least, otherwise the fringe white. 



Legs: Dark; vestiture short, except under side of coxse, tro- 

 chanter with a distinct apical spine: femur more or less spindle 

 shaped; anterior face with two rows of bristles only, an upper and 

 a lower; posterior face with a ventral row of slender bristles that 

 are at least as long as those of lower row of anterior face, well dif- 

 ferentiated centrally and extending distally to beyond middle of 

 femur: tibia with a single bristle on anterior face (besides those 

 close to median dorsal ridge) just distal of the middle and nearest 

 the lower side: tarsus slightly shorter than tibia. Anterior and 

 posterior ventral rows of bristles of middle femur developed on 

 proximal half only or thereabouts, distal portion of posterior row 



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