REPORT OF THE STATE ENTOMOLOGIST I918 



235 



long as the enlargement. Palpi (fig. 526) consisting of but three 

 segments, the first short, subquadrate, the second twice the length 



Fig. 52 Adiplosis toxicodendri: a, fifth antennal segment of male; b, 

 palpus; c, distal tarsal segment (enlarged, original) 



of the preceding, rounded at each extremity, the third a little shorter 

 than the second, more slender; face fuscous yellowish, eyes large, 

 black. Mesonotum reddish brown, submedian lines pale yellowish, 

 sparsely ornamented with fine setae. Scutellimi and pleurae fuscous 

 yellow, postscutellum yellowish. Abdomen a nearly uniform fuscous 

 brown, rather thickly clothed with fine setae. Wings (pi. 16, fig. 2) 

 hyaline, costa reddish brown; halteres yellowish transparent. Coxae 

 and femora pale yellowish, tibiae and tarsi pale brown, tarsi slightly 

 darker; claws (fig. 52c) rather slender, strongly curved, simple. 

 Genitalia; basal clasp segment stout, obliquely truncate; termmal 

 clasp segment slender, swollen at the base; dorsal plate broad, 

 deeply incised, the lobes well separated, narrowly rounded; ventral 

 plate broad, broadly rounded; style stout, tapering, narrowly 

 roimded. Type Cecid. 263. 



MONARTHROPALPUS Rubs. 

 1892 Rubsaamen, E. H. Berln. Ent. Zeitschr., 37:329, 381 



1896 Kiefifer, J. J. Wien. Ent. Zeit., 15:92, 94 



1897 Syn. Cecid. de Eur. & Alg., p. 30 



1910 Rubsaamen, E. H. Zeitsch. Wissenschaft. Insektenbiol., 15:284 



191 1 Felt, E. P. N.Y. Ent. Soc. Jour., 19:58 

 1913 KiefEer, J. J. Gen. Insect., fasc. 152, p. 149 



This peculiar Diplosid is easily distinguished by the uniarticulate 

 palpi and the normal mesonotimi. The male binodose antennal 

 segments have three ciromifila, the claws are simple and the third 

 vein imites with the margin near the apex of the wing. The female 

 has the ovipositor terminating in a long, stout, chitinous spine with 

 a length equal to about one-half the diameter of the abdomen. The 

 reduction of the palpi, the approximation to equality in the develop- 



