REPORT OF THE STATE ENTOMOLOGIST 1918 237 
on Long Island and has been reported from the Pacific coast. The 
midges complete their transformations in the galls and at the time 
of emerging, leave the whitish exuviae protruding. They are there- 
fore easily transported with infested plants. 
Gall. A more or less irregular, oval swelling of the leaf (fig. 53) 
with an eccentric, oval, clear space excavated by the yellowish larva. 
There may be very slight elevation of the leaf with an irregular, 
yellowish or brownish discoloration, the margin of the enlargement 
being indicated by a darker green. The gall is most easily seen by 
transmitted light. An infested leaf may contain only one or two of 
the maggots or there may be half a dozen with a nearly complete 
destruction of the vital parts of the leaf. 
Male. Length 2 mm. Antennae nearly as long as the body, 
sparsely haired, reddish; fourteen segments, the fifth (fig. 54a) with 

a b 
Fig. 54 Monarthropalpus buxi: a, fifth antennal segment of male, setae 
not sketched in; 6, same of female (enlarged, original) 
stems two and three times their diameters, respectively; three 
circumfila, the loops rather stout, short and approaching those of 
Hormomyia. Palpi (fig. 55); one long segment somewhat expanded 
distally, sparsely setose. Mesono- 
tum, scutellum and _ postscutel- 
lum a variable yellowish orange, 
the submedian lines sparsely 
haired. Abdomen sparsely haired, 
a variable orange, the basal seg- 
ments lighter, the distal bright 
orange; genitalia fuscous yellowish. 
Wings hyaline, costa dark brown, 
the third vein uniting therewith ‘ : 
at the apex. Halteres orange basally, fuscous yellowish distally. 
Legs a nearly uniform yellowish orange; claws tapering, simple, the 

Fig. 55 Monarthropalpus buxi, 
palpus of male (enlarged, original) 
