56 ENTOMOLOGICAL SOCIETY 



described it from a pinned specimen, a male, from Mexico. So 

 far as I can ascertain, no description from living specimens has 

 been made. I therefore give a detailed description of both 

 male and female, drawn from the insects while alive, as follows : 



Male and female : Dorsal aspect of thorax and abdomen, 

 including the ovipositor in the female, approaches raw sienna 

 in color.* 



The ventral and lateral aspects of the body, the legs, poisers, 

 head except the eyes, straw-yellow. Frontal bristles black. 

 Basal segments of antennae same color as lower part of head and 

 thinly covered with short black hairs ; last segment of antennae 

 deep chromeyellow, bristle black, except at base, and about twice 

 as long as segment. Face a little receding, furrows for the 

 reception of the antennas proportionately rather deep. Opening 

 of the mouth rather widened, border sharp. 



Proboscis rather thick, with the suctorial flaps slightly pro 

 longed, and covered with yellowish-brown hairs ; palpi prominent 

 and covered with blackish hairs. There are three longitudinal 

 sulphur-yellow stripes, two lateral and one mesal, on the dorsal 

 surface of the thorax ; the mesal one extends from the cephalic 

 margin of the thorax to the scutellum, but is not as distinct as its 

 cephalic as at its caudal end where it is widest ; the lateral ones are 

 more distinct and extend from the suture caudad to the posterior 

 margin of the thorax ; there is also a stripe same color as the 

 preceding each side of the thorax running from the base of the 

 wing along the lateral aspect to the cephalic margin of the thorax. 

 Scutellum is prominent, same color as stripes, has four black 

 bristles arranged around the upper margin of the posterior portion. 

 Short hairs of the thorax yellowish ; bristles black. Metanotum 

 with a black stripe on each side. Abdomen of the male with 

 blackish, very short hairs and a row of black bristles around the 

 margin of the last segment ; last segment a little longer than the 

 two previous ones taken together. Abdomen of the female 

 marked above by three distinct straw-yellow bands, with the 

 segment at base of ovipositor same color ; first segment as long 

 or longer than the two immediately following it ; segments below 

 covered with yellowish hairs ; the caudal margin of all except 

 the first two bear several blackish bristles. Ovipositor 

 approaches raw sienna in color, darker at tip, covered with short 

 blackish hairs, and measures about 4 mm. in length. Legs straw- 

 yellow, covered with short yellowish hairs, anterior femora with 

 a row of stout blackish bristles on the under side ; coxae with 

 several black bristles ; tibiae of medium pair of legs with a stout 

 black spine (spur) at the anterior end. Wings are 8 mm. long 



*According to Ridgeway Nom. of Colors. 



