NO. 3665 CADDISFLIES—FLINT 9g 
shelter distended. The pupae are enclosed in a rather loose, domed 
shelter of sand and silk. 
Key to Genera 
LARVAE 
Frontoclypeus with anterior margin evenly convex. . . ... . . Wormaldia 
Frontoclypeus with anterior margin asymmetrically emarginate . . . Chimarra 
PUPAE 
Mandible broad, subapical teeth close together, often arising from a single pro- 
PCUIOITUERR Re ences re Bet wei fo pt et ata: oak “all ete aserr ia oo ps OMIM AER 
Mandible narrower, teeth well separated, never arising from a single projection 
Wormaldia 
ADULTS 
Brostmpiawith. 1 apical spuri. .eic5 Be ae yet ee ees se SQ &. Chimarra 
Brenton with.2, apical spursis..o/. <.-.)! 3,2. «3 3 « » « -.. .Wormaldia 
Genus Wormaldia McLachlan 
Wormaldia McLachlan, 1865, p. 140. [Type-species: Hydropsyche occipitalis 
Pictet, 1834, designated by Ross, 1949.] 
There are species placed in the genus Wormaldia from all regions of 
the world save the Australian; however, the genus seems to be most 
diverse in the Northern Hemisphere. This is the first record of the 
genus from the West Indies. 
Larvae and pupae of the genus were described by Ross (1944), 
Lepneva (1964), and others. 
Wormaldia planae Ross and King 
Fiaures 10, 11 
Wormaldia planae Ross and King, 1956, p. 64. 
This species was described from Mexico, but I have seen examples 
from Panama, Colombia, and Trinidad, as well as these recorded here. 
It is thus a circum-caribbean species, and it may also be expected in 
the Andean region further south. 
Apuut.—Length of forewing 4 mm. Color brown, legs slightly 
paler. Male genitalia: no sternal processes; eighth tergum with a 
U-shaped dorsomesal excision, flanked by a pair of knoblike pro- 
tuberances; tenth tergum narrow, with apex enlarged in lateral aspect, 
dorsally with an expansion and a blunt tooth laterally, then narrow- 
ing to a subapical constriction, and a sharp apicolateral tooth; cercus 
reaching posteriad to subapical constriction of tenth tergum; clasper 
with basal segment short and broad, apical segment about as long as 
basal segment, somewhat narrowed, with a dense apicomesal patch of 
black spines; aedeagus with internal sclerotizations in the form of long 
