NO. 3665 CADDISFLIES—FLINT PA 
Ecnomodes Ulmer, 1911, p. 17. [New synonymy. ‘Type-species: Henomodes 
buchwaldi Ulmer, 1911, by monotypy.] 
Cordillopsyche Banks, 1913, p. 238. [Type-species: Cordillopsyche costalis Banks, 
1913, by monotypy.] 
Ecnomodellina Ulmer, 1962, p.5. [Replacement name for Ecnomodes Ulmer 1911. 
New synonymy.] 
Genus C Flint, 1964a, p. 476. 
Species from tropical America, Africa, and the Orient have been 
placed in this genus; however, I expect that many of those from the 
Old World are not truly congeneric. On the basis of adult morphology, 
the genus is close to Polycentropus; indeed, most North American 
workers have not recognized the two as distinct. 
The adults of this genus may be recognized by the fusion of Re and 
R; in the hindwing and generally by the division of the clasper in the 
male into distinct dorsolateral and ventromesal lobes. The larvae have 
the mandibles with the dorsal row of teeth overhanging the ventral 
row, the tibia and tarsus of the fore- and midlegs have a row of 
enlarged and generally black setae on the posterior face, and the anal 
claw bears several long teeth ventrally. 
I have already synonymized the genus Cordillopsyche (Flint, 1967), 
and am here synonymizing Eenomodellina (=Ecnomodes) Ulmer with 
Polyplectropus Ulmer. The original description of HL. buchwaldi leaves 
little doubt that it is a typical species of Polyplectropus. The following 
New World species, mostly described in Polycentropus, must be 
transferred to Polyplectropus (all new combinations): Hcnomodes 
buchwaldi Ulmer, Polycentropus charlesi Ross, P. santiago Ross. P. 
thilus Denning, P. allent Yamamoto, P. altmani Yam., P. deltoides 
Yam., P. elongatus Yam., P. laminatus Yam., P. robacki Yam., P. 
recurvatus Yam. 
Polyplectropus bredini, new species 
Ficures 38-41, 47-49 
This species seems quite unrelated to any other known species 
although there may be a slight relationship to P. charlest (Ross). From 
this species it is easily distinguished by the more distinctly bipartite 
clasper that bears large black spines. The species is named for Mr. 
J. Bruce Bredin, a cosponsor of the Dominica Survey. 
The relationship of the island populations is very close, but slight 
differences do exist. The males from St. Lucia have only three dark 
setae on the dorsal lobe of the clasper; the other dark seta on the 
Dominican specimens is pale. The Grenadan male (fig. 40) also has 
only three dark setae, but the ventralmost one is on an elongate 
process. Considering, the overall similarity however, I am considering 
these all one species. 
