74 PROCEEDINGS OF THE NATIONAL MUSEUM VOL, 125 
Family CALAMOCERATIDAE 
The calamoceratids are a rather small family, the majority of 
whose numbers are found in the tropical regions of the world. Many 
of the species are brightly colored and are most active in the daytime. 
The immature stages are all case bearers, many making flat cases 
of leaf fragments, some cylindrical cases of sand, and others hollowing- 
out a twig. They are generally inhabitants of lotic waters but may 
congregate in masses of organic trash in slowly flowing pools in the 
stream. 
Genus Phylloicus Miller 
Phylloicus Miller, 1880, p. 131. [Type-species: Phylloicus major Miiller, 1880, 
designated by Flint, 1964b.] 
The genus is primarily Neotropical in distribution but does enter 
the southwestern United States. Most of the species are diurnal and 
are marked with orange and black. 
The larvae construct large, flat cases of leaf fragments. The imma- 
ture stages were described by Flint (1964b). 
Phylloicus monticolus, new species 
FIGURES 222-225 
This species is most closely related to P. lituratus Banks from 
Columbia and Panama. From this species it differs in its coloration, 
and in the male genitalia by the shorter, broader cercus and broadened 
apical segment of the clasper. 
Avutt.—Leneth of forewing 8-11 mm. Color basically blue black, 
marked with orange as follows: pronotum, head and thorax ventrally, 
femora, and middle tarsi; forewings with two pale pinkish bands, one 
slightly beyond anastamosis, other basad, and longitudinal stripes 
basally in cells Cu, and 2A. Male genitalia: eighth sternum produced 
and bifid apically; ninth sezment produced ventrally into a sclerotized 
band articulating with eighth sternum; tenth tergum with a hirsute 
projection mesally at union with ninth tergum, with a ventrolateral 
flange, apically truncate; cercus broad basally, tapering to an apical 
point, sughtly longer than tenth tergum; clasper with basal segment 
cylindrical, apical segment broad and short, with apical peglike setae; 
aedeagus tubular, slightly C-shaped. Female genitalia: eighth sternum 
incised mesally, with a heavy brace along anterior margin and sub- 
laterally; ninth sternum with ribbon-like anteromesal sclerites, and 
a transverse ridge at midlength, basomesally a transverse, striated 
sclerite; cercus united to tenth segment, very small; bursa copulatrix 
with laterally expanded, posterior supports, bursa with an A-shaped 
central structure. 
