Muscidaz 
303 
base of the antennae usually above the 
middle of the eye; arista bare; at least 
two posthumerals and three posterior 
intraalars present. Parasitic on cater¬ 
pillars, etc. Tachinid^e 
SYNOPSIS OF THE PRINCIPAL GENERA OF THE MUSCID.® OF THE WORLD 
. Proboscis long, directed forward, adapted for piercing, or oral margin much 
produced, snout-like. 
b. Oral margin produced snout-like; vibrissa placed high above the oral 
margin; antennal arista either pectinate or more or less plumose, 
c. Antennal arista short or long-plumose; neither sex with distinct 
orbital bristles. 
d. No facial carina between the antennae . Rhynchomyiin.e 
e. Arista short-plumose. R.speciosa. Europe .... Rhynchomyia R. D. 
ee. Arista long-plumose. I. phasina. Europe and Egypt. Idiopsis. B.B. 
dd. With flattened carina, the bases of the antennae separated; no abdom¬ 
inal macrochaetae . Cosminin^e 
C. fuscipennis. South Africa . Cosmina 
cc. Antennal arista pectinate; bases of the antennae separated by a flat¬ 
tened carina . Rhiniinve R. D. 
d. Cell R5 open, or closed at the margin. 
e. Third segment of the antenna twice as long as the second; claws of 
both sexes short; cell R5 open. I. lunata. Eastern Hemisphere. 
. Idia Meigen 
ee. Third segment of the antenna three times as long as the second; 
cell R5 open or closed; claws of the male long and slender, of the 
female shorter than the last tarsal joint. I. mandarina, China. 
. Idiella B. B. 
dd. Cell R5 petiolate. Rhinia; and Beccarimyia Rdi. 
bb. Proboscis long, directed forward, adapted for piercing. STOMOXIN^E 
c. Arista flat, pectinate above with plumose rays; sternopleurals 1:2; 
bases of the veins Ri and R4+5 without setae; base of the media bowed 
down; apical cell opens before the apex of the wing. African species 
. Glossina Wied. 
d. Species measuring overtw r elve mm. in length. G. longipennis and fusca. 
dd. Species less than twelve mm. in length, 
e. All segments of the hind tarsi black. 
f. The fourth and fifth segments of the fore tarsi black; antennae 
black (fig. 164) . G. palpalis R. D. 
ff. Otherwise marked. G. bocagei, tachinoides, pallicera. 
ee. First three segments of the hind tarsi are yellow, the fourth and 
fifth segments are black. 
f. Fourth and fifth segments of the first and second pair of tarsi are 
black. 
g. The yellow bands of the abdominal segments occupy a third of 
the segment (fig. 165). G. morsitans Westw. 
gg. The yellow band on each segment of the abdomen occupies a 
sixth of the segment. G. longipalpis Wied. 
