SUBFAMILY CALLIPHORINAE 317 
In addition, Miss MacGill (in Myers, 1929, p. 358) found that 
there are more olfactory pits in the antennae of Calliphora 
vomitoria than in those of vicina. Myers also found that Alysia 
manducator, a common pupal parasite of vicina, did not para- 
sitize vonutoria, and Wardle (1927) reported vomitoria to be 
much more readily attracted to baits in shade than is vicina. 
Calliphora germanorum Vill. differs from vomitoria in having 
the anterior half of the bucca orange or orange red, and the 
buccal hairs before the metacephalic suture black. In addition, 
Wainwright (1932, Trans. Ent. Soc. Lond. 80(2):428) stated 
that the second sternite is nearly square. If a female specimen 
determined as germanorum by Villeneuve, and now in the Na- 
tional Collection, is correctly identified I am unable to find 
distinctive differences between this form and that described by 
Townsend under the name rubrifrons in 1908, which is treated 
here as a synonym of vomitoria. 
Biology, habits, and immature stages. Larva. MacGregor 
(1914) described the larval anatomy of this species in part and 
Herms (1911) reported upon some of the reactions of the larvae. 
The posterior spiracle (pl. 44, G) and the cephaloskeleton (pl. 
44, H) in the third instar larva are as illustrated. The habits 
of the larvae of vomitoria have not been studied so extensively 
as those of vicina; they are probably similar in most respects. 
Adult. What was supposedly this species has served as illus- 
trative material for many of the general studies on the anatomy 
of flies. Ritter (1912) studied the flying apparatus, Whiting 
(1913) the variation of the chaetotaxy, and Peterson (1916), the 
head capsule. 
The species is not very common in the United States and few 
collections contain many specimens, most of the material deter- 
mined as this species being Calliphora terrae-novae or vicina. 
Bruce and Knipling (1936) found only one specimen in trapping 
operations at Ames, Iowa, during 1933-1934. Although relatively 
uncommon, it may be collected throughout most of the northern 
part of North America, especially in the far north during sum- 
mer months. In nature, vomitoria and vicina seem to react in 
similar fashion. The former is often larger than vicina, and it 
appears to be slower on the wing. 
Hugo Summa (1889, p. 347) reported upon a case of human 
myiasis in Missouri, supposedly due to this species, which was 
summarized by Townsend (1890, Insect I1fe, vol. 3, pp. 39-40). 
Calliphora vomitoria rarely occurs in cases of myiasis, however, 
and then only as a secondary invader in old and pustular wounds 
for it is saprophagous. 
