74 
Psyche 
[June- Sept. 
tinaglia ) . Only one pulvillus well-developed, the 
other rudimentary 5 
Base of third longitudinal vein bare 8 
5. Second longitudinal vein very short, forming an oblique 
cross-vein which ends in the first longitudinal and 
runs from opposite or apicad of upper tip of anterior 
basal crossvein (M 3 ) to basad of anterior cross-vein 
(r-m) . Frons distinctly narrower at occiput than at 
fronto-clypeus, the postvertex much longer than wide. 
Scutellum as a rule with three ivory-white spots, the 
largest in the center ; with 13 to 27 preapical bristles 
(usually 16 to 20), in one or two irregular and fairly 
continuous rows. Parameres of male genitalia slen- 
der, rod-like, ending in a sharp point. Wing 7 to 8 
mm. long H. variegata. 
Second longitudinal vein longer and more slanting, end- 
ing in costa at or beyond tip of first longitudinal and 
running from basad of upper tip of anterior basal 
cross-vein to opposite or basad of anterior cross-vein 
6 
6. Smaller, the wing 4.5 mm. long. Frons wide, not ap- 
preciably narrower at occiput than at fronto-clypeus, 
the postvertex much wider than long. Mesonotum 
reddish-brown, with an anterior median dark band 
extending posteriorly to near the transverse suture 
where it is more or less forked. Scutellum entirely 
yellowish-white; with relatively few (probably eight 
to ten) preapical bristles. Mesonotum moderately 
bristly, bare in the center H. martinaglia 
Larger, the wing 6.5 to 9 mm. long. Frons narrower, 
the postvertex nearly as long as wide or slightly 
longer. Color pattern of mesonotum different. Pre- 
apical bristles of scutellum more numerous (12 to 
23) 7 
7. Frons distinctly narrower at occiput than at fronto- 
clypeus. Scutellum very wide and nearly rectangular, 
with a median, rufous and two lateral, ivory-white 
spots; with 12 to 23 heavy preapical bristles (usually 
14 to 20), placed in one regular, almost continuous 
row. Mesonotum moderately bristly, bare in the cen- 
