1915} North American Pachygasterine 315 
Pachygaster pulcher Loew.* 
Male—Glossy black. Antenne yellow; face with a white pilose line 
on each side, eyes with three narrow lines across center. Disc of 
mesonotum with short dark upright hairs. Abdomen shining, a large 
portion of the disc opaque. Legs yellow, coxe, and femora except 
bases and apices blackened. Wings slightly infuscated, especially along 
the fore margin on basal half, veins brown. Halteres yellow, usually 
with a dark spot on outer under surface of knob. 
Eyes bare, facets of equal size throughout, closely contiguous for a 
considerable distance above; ocelli on a prominent raised portion; 
antennze small, arista bare, hairlike; insertion of antennz very dis- 
tinctly below middle of profile; postocular orbits only visible towards 
lower extremity of head; profile as in Figure 2. Mesonotum finely 
punctured; scutellum without distinct rim. Abdomen not broader 
than thorax, narrowed at base, segments more distinct than in other 
genera, hypopygium small, usually protruded. Legs slender. Third 
vein ending as far before wing-apex as second branch of media does 
behind it, the branches of media often fused at apex of discal cell; 
apex of discal cell distinctly proximad of apex of stigma. 
Female—Agrees in color with the male. 
Frons slightly less than one-third head-width, slightly narrowed 
anteriorly, incised central line weak; antennz as in male but rather 
larger; profile as in Figure 1. 
Length, 2-3 mm. 
The original description gives the District of Columbia as. 
the type locality. I have seen one male from the Museum of 
Comparative Zoology collection labeled ‘“‘O. Sacken coll.” 
which bears the locality label West Point. The species has 
been recorded from New Jersey and the White Mountains, 
NE.” I) ave’ seen a-specimen from Opelousas, La‘; April, 
1897, submitted by C. W. Johnson, and others from Lafayette, 
iid. jiaky oj. M.-Aldrich): and Urbana, and ‘Monticello, 
Iil., June 20 to July 4, 1914 (C. A. Hart and J. R. Malloch). 
Only one male of the type series of pulcher in the Museum of 
Comparative Zoology, besides the type specimen, belonged to 
this species, the others being Neopachygaster maculicornis and 
Eupachygaster sp., probably puncizfer. 
Nothing is known of the early stages of our North American 
species. The European congener, atra Meigen, has been reared 
from decayed Ulmus wood. There are records of the species 
having also been reared from Populus alba and Pinus sylvestris, 
but there is considerable doubt as to the correctness of these, 
as pointed out by Verrall.t 
*Berl. Ent. Zeitschr., 1863, p 
{British Flies, Vol. V, ENE oy lle 
