51 
mm. Los Angeles, Cal. A single male specimen bred by Albert 
Koebele from a larva of Sphenophorus robustus. Type Xo. 3529, 
IT. S. National Museum robusta n. sp. 
Genus PHYTO Desv. 
Phi/to Desvoidy, Essai sur les Myodaires, p. 218: 1830. 
Savia Rondani, Dipterologiae Italicae Prodromns, Vol. IV, p. 140; 1861. 
This synonymy is given by Brauer and Bergenstamm. 1 Our species 
is black, including the palpi, cheeks largely reddish; front in male 
destitute of orbital bristles, in the female bearing two pairs; three 
postsutural and three sternoplenral rnacroclueta- : length, G to 8 mm. 
Northern Illinois and Missouri. (List of Dipterous Insects, Part IV, 
p. 757; 1849: Tacit ina. Phyto setosa Coquillett, Journ. N. Y. Ent. Soc, 
Vol. Ill, p. 99 ; Sept., 1895.) clesides Walk. 
Genus MAUROMYIA, new genus. 
The characters of this genus may be gleaned from the following 
description of the type species: Black, the palpi yellow; front in the 
male one and two-thirds times, in the female slightly over twice, as 
wide as either eye, ocellar bristles projecting obliquely forward, two 
pairs of orbital bristles in the female, none in the male, frontal bristles 
descending to base of third antennal joint, sides of face at narrowest 
point each one-thii(Las wide as the median depression, thickly covered 
with black bristles, cheeks in the male slightly narrower, in the female 
broader, than the eye height, vibrissa' widely separated, inserted on a 
line with the front edge of the oral margin, facial ridges bristly on the 
lowest fourth or third, facial depression carinate in the middle, antennae 
reaching tin 1 oral margin in the male, but only reaching to lowest 
fourth of face in the female, third joint in the male six, in the female 
three, times as long as the second, arista thickened on the basal half, 
the penultimate joint slightly longer than broad; palpi clavate, short, 
less than half as long as the proboscis beyond the basal articulation, 
the latter slightly over one half as long as height of head, eyes bare, 
head in profile nearly quadrangular, as long at the vibrissa 1 as at base 
of antenna', the face slightly concave; thorax gray pollinose, marked 
with three black vittae, three. postsutural and two sternoplenral macro- 
cha'ta 1 , scutellum bearing three long marginal pairs; abdomen shining, 
last three segments whitish pollinose at the bases, bearing discal and 
marginal niacroclneta^ ; wings hyaline, tinged with smoky along the 
veins, third vein bristly two thirds of distance from base to small cross- 
vein, hind crossvein slightly curved, nearly perpendicular, situated 
midway between the small and the bend, the latter nearly rectangular 
and bearing a short appendage, apical cell closed and petiolate, the 
petiole almost as long as the hind crossvein; calypteres whitish; hind 
»Zweif. Kais. Mus. Wien, VI, p. 237; 1893. 
