45 
Metalepsis Grt. 
1875, Check List Noct. 13, 25 (type, comuta Grt.) 
Eyes naked, lashed. Palpi upturned, third joint porrect; both second 
and third joints heavily fringed below with long hairs. Front smooth. 
Male antennae serrate and fasciculate or bipectinate. Tibiae all spined; 
fore tibia longer than first tarsal joint, heavily fringed with hair on outer 
side; inner row of spines complete, distinct; outer row confined to a few 
apical ones, and more or less hidden in vestiture. Fourth row of tarsal 
spines lacking. Vestiture of thorax hairy with indications of anterior and 
posterior tufting. 
Figure 23. Male genitalia of Metalepsis comuta Grt. 
Male Genitalia. Clasper long and narrow, apex rather truncate with- 
out corona; sacculus long and heavy with harpe obliquely attached at apex 
and projecting slightly over costal edge of clasper; digitus present or absent. 
Uncus somewhat diamond-shaped apically. Clavus absent. Juxta weak; 
anellus with two lateral scobinate flaps. Vesica armed with a large heavy 
cornutus. 
The writer previously (1927, Can. Ent. LIX, 65) noted the close 
relationship between this genus and Cerastis Ochs, and included in it the 
three species comuta Grt., fishi Grt., and salicarum Wlk. The genitalia of 
these species are very similar, but in comuta we find a digitus which is lacking 
in the other two. The type of armature of the vesica is reminiscent of 
Ochropleura pleda. 
Cerastis Ochs. 
1816, Schmett. Europ. IV, 84 (type, rubricosa Schiff.). 
Glaea Stephens, 1829, 111. Brit. Ent. Haust. 11, 159 (type, rubricosa Schiff.). 
Matuta Grote, 1874, Can. Ent. VI, 116 (type, tenebrifera Wlk.). 
Differs chiefly from Metalepsis in the entire absence of spining on the 
fore tibia. 
66022—4 
