MORGAN HEBARD I 7 



GG. Median and caudal femora lacking a disto-dorsal genicular 

 spine. V^entral margins of femora supplied with \ery numerous, 

 elongate, silky hairs. Supra-anal plate not produced. Genital 

 hook curved outward. Subgenital plate with surface specialized 



proximo-si nistrad Eremoblatta subdiaphana (Scudder) 



EE. Ocelli absent. Subgenital plate symmetrical. (Tegmina with veins 

 distinct, discoidal sectors oblique. Ventral margins of femora unarmed. 

 Pulvilli absent. Arolia vestigial. Size very small. Styles small, 

 slender, rather elongate, placed laterad on distal margin. General col- 

 oration buffy, diaphanous.) Compsodes schwarzi (Caudell) 



CC. Tegmina much reduced. Wings vestigial. (Tegmina rhomboidal, sutural 

 margins overlapping, distal margins truncate. \'entro-cephaIic margin of 

 cephalic femora armed with a single, delicate, distal spine; other ventral 

 femoral margins unarmed, except cephalic margin of caudal femora, which is 

 supplied with several stout spines. Pulvilli absent. Large arolia present. 

 Size minute. Subgenital plate asymmetrical, without styles. General color- 

 ation amber yellow.) Attaphila fungicola Wheeler 



BB. Tegmina absent. (Distal portion of abdomen covered by the produced sixth 

 dorsal and ventral abdominal segments. Subgenital plate concealed, symmet- 

 rical, produced. Styles similar, elongate, cylindrical, springing from sharp, 

 brief, latero-distal emarginations of the distal margin of the plate. Size medium, 

 form elongate. Coloration shining blackish brown. Ocelli absent. Pronotum 

 thickened and somewhat hooded cephalad. Cephalic femora with \entro- 

 cephalic margin armed distad with two or three stout spines, ventro-caudal 

 margins of all femora (normally) armed with two similar distal spines, other 

 ventral femoral margins unarmed. Four proximal tarsal joints heavy, each 

 bearing a pulvillus; tarsal claws heavy. Arolia absent.) 



Cryptocercus punctulatus Scudder 



Key to the Females of the Blattidae foujid in North America, north 



of Mexico^" 



A. Ventral margins of femora supplied with numerous spines. (Median and caudal 

 femora with a disto-dorsal genicular spine. Tegmina present. Tarsal claws 

 simple.) 

 B. Subgenital plate simple. (Arolia present.) 



C. \'entro-cephalic margin of cephalic femora armed with a row of hea\-y 

 proximal spines, succeeded by a row of more slender, shorter, distal spines 

 (type B). 



D. Fourth tarsal joint alone bearing a puKillus. (Tegmina with oblique 

 discoidal sectors, where these are not obliterated by tegminal reduction.) 



" The species of the genera Parcoblatta and Arenivaga are not included in the present 

 key. Keys to distinguish the females of these species are given under their respective 

 generic discussions. 



MEM. AM. ENT. SOC, 2. 



