SYSTEMATIC ACCOUNT. 61 
todo Maa, 
Leucophenga i is Loew. 1865. Berlin. ent. Zeit., 9, 183 (as Drosophila). 
Specimens examined: type material (Gundlach), Bartle (C. W. Metz), 
Cuba. The specimen from Bartle has more yellow on the abdomen than 
the type, but apparently represents the same species. 
Chymomyza Czerny. 1903. Zeit. Hymenopt. Dipt., 3, 3, 199. 
Arista plumose; lower reclinate orbital large, placed below proclinate orbital; ocellars 
present; postverticals small; vibrissz present, other oral bristles large; eyes bare or nearly 
80; carina confined to upper part of face; a few enlarged ommatidia in lower front part of 
eye; two dorsocentrals; two scutellar pairs, posterior ones crossed; a small propleural 
sometimes present; preapicals on all tibie; first femora of males with numerous strong 
bristles below; costa reaches fourth vein; anal cell and vein present; hypopygium promi- 
nent; slender species. 
The species are to be found around bleeding trees, on windows, or at 
fruit. Dr. Metz and I have bred C. procnemis Williston from banana, 
and C. amena Loew from apple and banana. Shannon has bred the latter 
from walnut and butternut husks, and Banks has bred it from acorns. The 
members of the genus have a characteristic habit of waving their wings 
constantly, after the fashion of species of Sepsis or Huzesta. 
The type species is Drosophila fuscimana Zetterstedt, from Europe. The 
following species may be recognized: 
Palearctic: Chymomyza albopunctata Becker; C. caudatula Oldenberg; C. costata Zetter- 
stedt; C. distincta Egger; C. fuscimana Zetterstedt. 
Ethiopian: C. bicolor Lamb. 
Nearctic: C. aldrichit Sturtevant; C. amena Loew; C. caudatula Oldenberg; C. procnemis 
Williston. 
Neotropical: C. procnemis Williston. 
Deducting for double entry of caudatula and procnemis, the total is nine 
species. 
Oldenberg (1914, Arch. Naturgesch., 80, A, 2, 14) has discussed the 
Palearctic species. He has studied the male genitalia, which are evidently 
of importance as taxonomic characters in this group. I have found their 
study difficult to carry out, however, and have used the character only 
enough to identify C. caudatula from the Pacific coast, and to determine 
that C. procnemis (specimens from Lakeland, Florida) is distinct from 
C. fuscimana and C. distincta, which it greatly resembles. I am certain 
that a study of these organs would show that what passes as C. procnemis 
is really a mixture of several species. 
There are at least two Neotropical species of the genus Chymomyza 
(Haiti, British Guiana) with laterally produced eyes, suggestive of Zygo- 
thrica. I have not described them because it seems better to wait for a 
study of the male genitalia before attempting to determine specific limits 
in the section of the genus to which they belong. 
The described North American species may be separated by the following 
key: 
Pew ings mech spotted + front lege VEHOW o's v.... «ss = aliceisiaoid sao e aie plats «a deot amena 
Wings clear, or blackish along anterior margin, or with a white tip; front femora, 
tiie, ana wasal tarsal younts blackish. 3 econ eee ee erage 2 
PE roOne vellowror reda@ismr yellow nn fiMV cio OT ee al Si ls Sl is a procnemts 
LD ay otis Gate Toho SWa) VTE oF 8 1 UG AMIN MRE ai RR Raa RI A a 3 
2 Valea GEE = SIE T Ces ov 7s] 9 CC a Ra On caudatula 
COstAN Cell DrOWA FACE DLOWIN | 3 ih ccna st Gn dn Ma Ta RAT NN i ee aldrichit 
Chymomyza amcena Loew. 1862. Berl. ent. Zeit., 6, 230 (as Drosophila). 
Specimens examined: Hanover, New Hampshire (C. W. Johnson); 
Brattleboro, Vermont (C. W. Johnson); Worcester (C. W. Johnson), 
