3i4 
Hominoxious Arthropods 
much elongate. A. luteola (fig. 86). Africa. The sub¬ 
genus Cheeromyia Roub. is included here. Auchmeromyia B.B. 
hh. Peristome narrow; no pteropleurals, two sternopleurals; 
two orbitals in the female; second segment not elongate; 
the fourth with two well developed discal macrochaetae. 
B. depressa. Africa.Bengalia R. D 
gg. With another combination of characters. 
h. Costal spine present; body in part black; antennas notice¬ 
ably shorter than the epistome, inserted above the middle 
of the eye and separated from each other by a carina; 
abdominal segments with marginal macrochaetas; stemo- 
pleurals 2:1 or 1:1. Paratricyclea Villen. 
hh. Costal spine not distinct, or if present, insect otherwise 
different. 
i. Genae with several ranges of microchaetae; vibrissal ridges 
strongly converging; peristome broad; arista moderately 
plumose; sternopleurals usually 1:1; color entirely 
testaceous. C. anthropophaga (fig. 87) and grunbergi. 
Africa.Cordylobia Grunb. 
ii. Genae bare or with but one range of setae; vibrissal ridges 
less converging; peristome narrow; arista long plumose, 
j. Genas with a single row of microchaetae. 
k. Sternopleurals 2:1; color entirely testaceous. 
. Ochromyia Macq. * 
kk. Sternopleurals l:l. P. varia Hough. Africa. 
. Parochromyia Hough 
jj. Genae bare. 
k. Basal section of R4+5 bristly only at the immediate 
base, distal section with a broad curve; distal 
portion of the abdomen metallic; sternopleurals 
usually 1:1. rarely 2:1. M. ceneiventris Wd. Tropic 
America. Mesembrinella. G. T. 
kk. R4+5 bristly at least nearly half way to the small 
crossvein; sternopleurals 1:1. 
I . Macrochaetas of the abdomen marginal; neither sex 
with orbitals; no carina between the base of the 
antennae; three pairs of presutural inner dorso- 
centrals. Eastern hemisphere. T. ferruginea. 
Tricyclea V. d. W. ( = Zonochroa B. B. according 
to Villeneuve 1914). 
II . Abdomen without macrochaetas; wing usually with 
a marginal streak and gray markings. Brazil 
. Hemilucilia B. B. 
*Plinlhomyia Rdi. and Hemigymnochiita Corti are related to Ocliromyia, though too briefly 
described to place in the key. 
