84 
Psyche 
[June-Sept. 
PERILAMPUS, A SECONDARY PARASITE ON SARCOPHA- 
GIDS AND TACHINIDS PARASITIC ON KATYDIDS AND 
LONG-HORNED GRASSHOPPERS 
Ford 1 reports finding a planidium of Perilampus attached 
to a long-horned grasshopper, Conocephalus fasciatus. She 
considers it quite improbable that Conocephalus is the true 
host of the Perilampus, and that quite likely the planidium 
is a secondary parasite of some parasite of Conocephalus, 
because Perilampus has been reared as a secondary parasite 
from several species of Sarcophagids, though not from Sar- 
cophagids on long-horned grasshoppers. 2 ’ 3 
I have reared a Perilampus n. sp. 4 from one of three 
puparia collected from the cell of the digger wasp, Ammo- 
bia pennsylvanica which uses katydids, Microcentrum rhom- 
bifolium ( M . laurifolium ) for provisioning her cells. The 
other two puparia yielded a Brachymeria n. sp., and a Sar- 
cophagid fly. The fly was in too poor a condition to allow 
of identification beyond Sarcophagidse. The puparia, which 
were all identical, in structure, were new and as yet uniden- 
tified, making it impossible to use them as a means of iden- 
tifying the fly. The find at least establishes the fact that 
Perilampus is a secondary parasite on a Sarcophagid para- 
sitic on katydids. 
From a collection of over fifty puparia of the Tachinid, 
Senotainia trilineata (V. d. W.) found in the cells of the 
same digger wasp, I reared 2 specimen of Perilampus hya- 
linus (Say). This establishes the fact that Perilampus is a 
secondary parasite on Senotainia trilineata parasitic on 
katydids. I have also reared, however, S. trilineata from 
1. N. Ford, Canad. Ent., 54:199-204, 1922. 
2. H. S. Smith, U S Dept Agr, Bur Ent, Tech Ser 19 (4) :33-69, 1912. 
3. E. O. G. Kelly, Jour. Agric. Res., U. S. Dept. Agr., 2:435-445, 1914. 
4. Identifications were made by the staff of the Bur. Ent. and Plant 
Quar., U. S. Dept. Agr. as follows: Orthoptera, A. N. Caudell; 
Perilamphus, A. B. Gahan; Sarcophagids, J. M. Aldrich and C. T. 
Greene. 
