62 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



5. Mesonotum with median lobe rufous 6 



Mesonotum with median lobe black; body in female rufous, 



with the following parts white: clypeus, labrum, antennal 

 segments six to nine, a narrow line on collar, the V-spot of 

 the mesonotum, a spot beneath anterior wings, scutellum, 

 postscutellum; coxae and trochanters white, shading to 

 rufous; with the following parts black: postocellar area, an 

 irregular spot at base of clypeus, ventral part of prothorax, 

 mesothorax except parts named and a large spot on pleurae, 

 and metathorax; saw-guides with their upper and lower 

 margins subparallel, slightly convex, and rounded, squarely 

 truncate at apex. Male has basal segments of antennae 

 rufous above and pleurae almost entirely rufous. Length 

 1 1 mm jmellosa 



6. Female with saw-guides concave above, convex below, and 



the apex almost squarely truncate; body rufous with the 

 following parts white: narrow line on collar, scutellum, 

 postscutellum, apices of coxae, and trochanters; with the 

 following parts black: spot surrounding pcelli, a small 

 spot on the middle of postocellar area, lateral lobes of 

 mesonotum, prothorax in great part, pectus, and bases of 



coxae confusa 



Female with saw-guides straight or slightly convex above, 

 convex below, and gradually rounded to a blunt point at 

 apex; body rufous, with the following parts white: clypeus, 

 labrum, antennal segments six to nine, usually a fine line on 

 collar, scutellum, and postscutellum; with the following 

 parts black: antennal segments four to six, postocellar area 

 sometimes, lateral lobes of mesonotum, metathorax, ven- 

 tral part of prothorax, pectus, coxae, trochanters in part, 

 saw-guides, and a ring on the apex of posterior femora; 

 amount of black extremely variable, in some specimens 

 entire head, metathorax, prothorax, and entire legs rufous 

 with black lines on sutures. Length iimm terminalis 



7. Eyes in great part margined with white; body in female 



black, with the following parts white: clypeus, labrum, 

 ^ antennal segments six to nine, outer orbits, inner orbits, 

 genae, supraclypeal area, posterior margin of head, tegulae, 

 collar, V-spot, a spot beneath each wing, a line or spot on 

 pleurae, scutellum and postscutellum, coxae at side, and 

 trochanters; the following parts rufous: abdomen including 

 basal plates, and legs beyond trochanters; third segment 

 of antennae longer than fourth; saw-guides with the upper 

 and lower margins parallel and broadly truncately rounded 

 at apex, Male differs only in having the white more pro- 

 nounced on center of thorax. Length 11 mm pallidicornis 



1 



