i66 



NEW YORK STATE MUSEUM 



1909 

 1918 



Felt, E. P. 



slender, narrowly rounded apex. Palpi missing. Mesonotiim red- 

 dish brown, the yellowish submedian lines sparsely haired. Scu- 

 tellum yellowish, postscutellum yellowish orange. Abdomen thickly 

 haired, yellowish brown; genitalia yellowish. Wings hyaline, costa 

 dark brown. Halteres pale yellowish. Coxae mostly a yellowish 

 straw, the distal tarsal segments on the anterior and mid legs reddish 

 brown; claws long, slender, evenly curved, the pulviUi about as long 

 as the claws. Genitalia; dorsal plate short, stout, deeply and 

 triangularly incised, the lobes somewhat divergent, roundly emar- 

 ginate, the lateral angles somewhat produced, each posterior angle 

 with a long, stout seta; ventral plate long, slender, narrowly 

 rounded; style long, rather stout, narrowly rounded. Type, 

 Cecid. 978. 



Parallelodiplosis spirae Felt 

 Econ. Ent. Jour., 2:293 (Clinodiplosis) 

 N. Y. State Mus. Bui. 200, p. 134 



The pale yellowish midge with the extremity of the abdomen deep 

 orange was reared the latter part of July and early in August from 

 a variable yellowish or reddish, marginal roll occurring 

 on the half-grown leaves of Spiraea salici- 

 folia taken by Cora H. Clarke June 26, 1909 at 

 MagnoHa, Mass. This gall was observed in Albany 

 June s, 1908. 



The galls (fig. 34) are very variable, yellowish or red- 

 dish, marginal leaf rolls some 3 mm long on the young 

 leaves of Spiraea salicifolia and frequently 

 assuming such fantastic shapes as to lead Miss Clarke 

 to designate the deformity as a ram's horn or Vienna 

 crescent gall. 



Larva. Length 2.5 mm, yellowish. Head small, an- 

 tennae rather long, tapering. Breastbone irregularly 

 bidentate and consisting simply of a rather weakly 

 chitinized, somewhat expanded anterior portion, the 

 posterior part obsolete. Skin nearly smooth, the pos- 

 terior extremity broadly rounded and finely shagreened. 



Male. Length i mm. Antennae one-half longer than the body, 

 thickly haired, reddish brown; fourteen segments, the fifth with 

 stems two and two and one-half times their diameters respectively; 

 terminal segment produced, the distal enlargement cylindric, with 

 a length nearly three times its diameter and an irregular, fingerlike 

 process apically. Palpi; the first segment short, irregular, the second 

 with a length three times its diameter, tapering slightly, the third 

 as long as the second, more slender, the fourth a little longer and 

 more slender than the third. Mesonotum reddish brown, the sub- 

 median lines sparsely haired. Scutellimi yellowish red, postscu- 

 tellum fuscous. Abdomen yellowish with deep orange extremities, 

 the segments margined posteriorly with dark chitin and with rudi- 



Fig. 34 Par- 

 allelodiplosis 

 spirae, leaf 

 rolls on spi- 

 raea (origi- 

 nal) 



