FAM. EMPIDID/E 307 
'The genus Crossopalpus, Bigot, was founded on Platypalpus ambiguus, Macquart, which is regarded 
as the same species as Drafetis flavipes, Macquart, and therefore it is synonymous with this subgenus. 
2. SUBGENUS EUDRAPETIS, MELANDER 
Type species : E. spectabilis, Melander (Pl. 4, Fig. 34). Robust, larger species, more or less 
bristly and black; antenne longer, directed obliquely upward, the second joint with a pronounced seta 
beneath, the third joint ovate to lanceolate, with a long terminal arista; femora with preapical bristles, 
anterior tibiae with apical bristles and the hind ones with a more or less evident terminal spur and 
usually with extensor or apical bristles; humeral, and sometimes discal bristles (e. g. posthumeral, 
supraalar and anterior dorsocentrals) present ; wings broad, costa short-pubescent, third vein straight or 
recurved ; halteres yellow. 
3. SUBGcENUS ELAPHROPEZA, MACQUART 
Type species : E. ephippiata, Fallen. Usually yellow, sometimes black species; antennae 
elongate, horizontal, the second joint without seta beneath, the third joint lanceolate, two or more times 
the length of the first two joints together, the terminal arista relatively short, sometimes no longer than 
the antennze; abdomen broad, the middle segment with flattened setula; legs slender, the hind tibize 
with extensor bristles and with a more or less evident terminal spur; wings narrower, the hairs of the 
base of the costa longer than elsewhere. 
4. SUBGENUS CTENODRAPETIS, BEzzi 
Tyne species : C./. ciliatocosta, Bezzi. Body slender, elongate, usually yellow, the abdomen 
longer than the thorax; antenne elongate, horizontal, the second joint without seta, the third joint 
lanceolate with relatively coarsely pubescent terminal arista ; legs slender, with bristles and a long 
terminal spur on the hind tibiz;; wings long, narrow, cuneate, the costal margin with long cilia. 
* 
* * 
'The species of Drafetis are &stival and occur in meadowlands and among shrubbery. The 
developmental stages are unknown. In the tropics yellow-colored species predominate, but in the 
'Temperate Zone the general species are black and more robust. Here the species are found during the 
spring and summer, sometimes swarming about flowers like wild cherry and plum, and sometimes 
running about singly over grass and low shrubbery. A synopsis of the American species of Drafetis was 
given by the writer in the June, 1918, issue of the « Annals of the Entomological Society of America ». 
The preceding generic characterization is taken from this account. 
Geographical distribution. 
SuBGENUS DRAPETIS, MEIGEN, S. STR. 
r. D. aliteruigra, Melander, Ann. Ent. Soc. Amer. Vol. rz, p. 192 (1918). | North America. 
nigra, Melander (not Meigen), Trans. Amer. Ent. Soc. Vol. 28, p. 208, 
f. 12, 17, 24 (1902); Lundbeck, Dipt. Dan. Vol. 3, p. 257, note (1910); 
Malloch, Bull. Illinois Labor. Nat. Hist. Urbana, Vol. 12, Art. 3, p. 403 
(1917) larva, pupa. 
2. D. assimilis, Fallen, Dipt. Suec. Emp. p. 8, 34 [1815] (Tachydromia); Europe, ?North America. 
Walker, Ins. Brit. p. 136 (1851); Schiner, Fauna Dipt. Austr. 
Vol. r, p.95 (1862); Lundbeck, Dipt. Dan. Vol. 3, p. 256, f. 115 
(1910); Wahlgren, Ent. Tidskr. Vol. 3r, p. 87 (1910); Frey, Acta 
