FAM. MYCETOPH1LID.E 
89 
as the preceding; the tip of the proboscis flat and broad, spade-like; palpi four jointed. Abdomen seven 
segmented. The wing is a little longer than the abdomen, rounded ; costa produced beyond the tip of 
the radial sector, but does not reach the tip of the anterior branch of the media ; subcosta is rather short, 
ending in Rj; Ri ends beyond the middle of the wing length; the basal section of the radial sector 
(omitted in Schnuse's figure) is situated near the mid length of the wing and slightly oblique in position; 
R-M crossvein is nearly longitudinal in position in the same line with radial sector; media forks distad 
ot the base of the radial sector; cubitus forks under or proximad of the proximal end of the R-M cross- 
vein; anal veins incomplete (PI. 5, Fig. 26). 
Type species : R. rufina, Schnuse. 
Geographical distribution of species : 
I. R. rufina, Schnuse, Zeitschr. f. Hym. u Dipt. p. 149, fig. (igoi). Corsica. 
Megophthalmidia. Dziedzicki, Horae Soc. Ent. Ross. Vol. 20. p. SaS (3) (i88g). 
Characters. — Head placed low upon the thorax; palpi three jointed ; the first pyriform, the 
second twice as long as the first, the third a little longer than the second; face rather long; eyes oblong, 
emarginate at the base of the antennje ; ocelli three in number, placed in a transverse line on the front, 
the middle one as large or larger than the laterals, the latter widely remote from the eye margin; anten- 
nae arcuate, 2-I-14 jointed, the two basal joints caliciform, the flagellar joints subequal in length. Thorax 
short, highly arched, the metanotum short; scutellum large, with ten setae. Halteres with large round 
head. Abdomen short, cylindrical, with six segments; hypopygium (PI, 7, Fig. 5) inflected under 
the abdomen. Wing oblong-oval ; costa produced far beyond the tip of the radial sector but not reaching 
the tip of the wing ; subcosta not long, ending in R i ; Ri ends in the costa beyond the mid-length of the 
wing; basal section of the radial sector is situated about the middle of the wing, nearly perpendicular in 
position; media forks beyond the base of the radial sector, its anterior branch about twice as long as the 
petiole; cubitus forks proximad of the proximal end of the R-M crossvein which is nearly longitudinal 
in position; anal veins vestigial (PI. 5, Fig. 30). 
This genus, most closely related to Riilrophora and Parastemma, differs from the former in having 
shorter anal veins, from the latter in the position of the fork of the cubitus. 
Type species : M. Zugmayeriae, Dziedzicki. 
Geographical distribution of species : 
I. M. Zugmayeriae, Dziedzicki, Horae Soc. Ent. Ross. Vol 23, p. 626, pi. 21, Europe, 
f. 22i-23i (1889). {= Leia crassicornis, Curtis, according to Jenkin- 
son, igo8.) 
Parastemma. Grzegorzek, Berl. Ent. Zeitschr. Vol. 29, p. 199 (i8S5). 
? Sciarella. Meunier, Mon. Mycetoph. etc. p. 78, pi. 7, f. i5 (1904). 
? Heeriella. Meunier. ibidem, p. 75, pi. 7, f. 4 (1904). 
(i) M . occidental is, no v. sp. — Male and female. — Brownish yellow, head black, legs pale yellow, tarsal claws each with large tooth near 
base. Length 2.5 mm. Washington State. 
43. Genus MEGOPHTHALMIDIA, Dziedzicki 
Western United States. 
44. Genus PARASTEMMA, Grzegorzek 
