REVISION OF GENUS ZAMARADA 41 



the hind tibia is dilate, except in erugata, enclosing a tuft of long hair-scales. 

 Distinguished from the many similar-looking species in the minimaria-gvoup by the 

 dilate hind tibia of the male and by the presence on the vesica of a single, thorn-like 

 cornutus in place of the cluster of cornuti found in species of that group. 



Key to Species 



1 Dorsal process of valve cygnate, broadened at two-thirds, then tapered, smooth- 



edged and without projection ........ 2 



— Dorsal process of valve serrate-edged in part or with spatulate projection at 



one-half to two-thirds, the projection digitate or triangular, serrate-edged or 

 smooth ............ 3 



2 (1) Apex of uncus tapered to distinctly truncate tip. Apical fourth of aedeagus 



coarsely scobinate on dorsal surface. Ventral plate of gnathus broadly 

 rounded ......... hyalinaria (p. 57) 



Apex of uncus tapered to a point. Aedeagus smooth-surfaced. Ventral 



plate of gnathus tapered to narrowly rounded apex . . ochrata (p. 58) 



3 (1) Scobination on apical half of aedeagus as long as or longer than cornutus. 



Projection from dorsal process of valve triangular, weakly serrate along 

 posterior margin ........ psammites (p. 56) 



— Scobination on apical half of aedeagus often coarse and strongly sclerotized, 



but minute. If the projection from the dorsal process of the valve is tri- 

 angular, it is either entirely smooth-edged or only the anterior margin is 

 serrate ............ 4 



4 (3) Dorsal process of valve with entirelv smooth-edged, triangular process at one- 



half 5 



— Dorsal process of valve not so formed; if triangular in shape, then coarsely 



serrate along anterior margin ........ 6 



5 (4) Triangular projection from dorsal process of valve sharply angled at apex. 



Fulcrum almost twice as long as aedeagus, apex finely and minutely serrate 



delta (p. 55) 



— Triangular projection from dorsal process of valve rounded at apex. Fulcrum 



a little longer than aedeagus (ratio 9:8), apex densely long-spined. 



erugata (p. 46) 



6 (4) Projection from dorsal process digitate, spatulate and smooth-edged, apex 



smoothly rounded. Fulcrum not extending beyond apex of aedeagus . 7 



— Projection from dorsal process not so formed; if digitate, then apical margin 



serrate. Fulcrum extending beyond apex of aedeagus .... 8 



7 (6) Uncus tapered to point. Apex of ventral plate of gnathus dilate and discoid. 



Fulcrum three-eighths as long as aedeagus, apex tapered to a point 



melasma (p. 59) 



— Uncus very broad, almost rectangular, for two-thirds of its length, apical third 



tapered to minute, pointed tip. Ventral plate of gnathus evenly tapered to 

 narrowly rounded tip. Fulcrum one-half as long as aedeagus, apex hammer- 

 headed and coarsely scobinate ....... ilma (p. 60) 



8 (6) Ventral surface of dorsal process of valve evenly curved from base to apex; 



dorsal surface coarsely and irregularly serrate from one-fourth to five- eighths. 

 Uncus sharply narrowed at one-third, apical two-thirds produced and of even 

 width to tip, the width equal to that of apical fourth of dorsal process. Apex 

 of fulcrum dilate and densely spined, 3-4 spines one and one-half times as 

 long as width of aedeagus ...... prionotos (p. 48) 



— Ventral surface of dorsal process of valve more or less cygnate. Uncus evenly 



narrowed to one-half, then more slenderly produced, or evenly tapered, to 

 apex. Apex of fulcrum not ornamented with long spines ... 9 



