1970] 
Roth — Blattaria 
437 
Fig. 1. Male genitalia (dorsal view) of Epilampra abdomenningrum 
from Tapurucuara, Rio Negro, Brazil. (C = cleft of Ll ; Ll = first sclerite 
of left phallomere; Lib = setal brush of Ll ; L2vm = median sclerite 
L2 ventromedial) ; L2d = dorsal sclerite of L2 ; P = prepuce; R2 = hooked 
sclerite of right phallomere). 
Museum of Comparative Zoology, Harvard University, Cambridge, 
Mass.; (N) = U. S. Army Labs., Natick, Mass.; (USNM) = 
United States National Museum, Washington, D.C. Geographical 
collection data, if known, follow these abbreviations. The number 
preceding the abbreviations refers to the number assigned the speci- 
men and its corresponding genitalia (on a slide) which were deposited 
in the museum indicated. These numbers are used in the text where 
the identifications of certain species are discussed. 
If known, the taxonomists who identified the species are given. 
In several cases these specialists of the Blattaria disagreed in their 
determinations, emphasizing the difficulty in identifying species of 
Epilampra from literature descriptions. Unfortunately male type ma- 
terial was not always available so that several questions still remain 
unresolved. In spite of this drawback the results point up the value 
of using male genitalia in the taxonomy of a difficult genus. 
Results and Discussion 
The phallomeres characteristic of Epilampra male genitalia are 
shown in Figure i. 
Prepuce — Usually distinctively shaped with a definite marginal 
outline and often covered by microtrichia (Fig. i, P). 
