56 NORTH AMERICAN BLATTIDAE 



Key West. Fla., I, 20, 1904, (Hebard), i o^ ; HI, 15 to 16, 1910, (Hebard; under 

 boards, short grass in open), i cf, 4 ? • ^ J"v. 9 ; VII, 7. iQi^- (Rehn and Hebard; 

 leaf mould in jungle key scrub), i <f, [all Hebard Cln. and A. N. S. P.]. 



BLATTELLA Caudell 



1839. Phvllodmmia Ser\-ille, Hist. Nat. Ins., Orth., p. 105. 



1903. Blattella Caudell, Proc. Ent. Soc. Wash., v, p. 234. (New name given for 



preoccupied Phyllodromia.''*) 

 191 1. Blattella Shelford, Ent. Monthly Mag., 2d ser., xxii, p. 154. (Genus re- 

 stricted.) 



Though numerous Asiatic and African species belong to the 

 genus as restricted by Shelford, the cosmopolitan genotype alone 

 occurs in America." 



Genotype: Blattella germanica [Blatta germanica] (Linnaeus), 

 designated by Caudell in 1903.^*5 



Generic Description.— Sexes only slightly different in form. 

 Head with eyes well separated, area between eyes and antennal 

 sockets not flattened, ocellar areas weakly defined. Tegmina (in 

 fully developed condition, found in the large majority of species) 

 delicate, narrow; discoidal sectors not numerous (usually about 6), 

 longitudinal. Wings hyaline, not iridescent; area of costal veins 

 narrow, costal veins feebly clubbed distad, ulnar vein with mini- 

 mum branches for group (in genotype normally showing but one 

 fork, occasionally simple or bi-ramose), intercalated triangle small. 

 Abdomen of males with sixth dorsal segment specialized and with 

 succeeding segments specialized in outline. Supra-anal and sub- 

 genital plates of male variously produced. Subgenital plate of 

 female convex, truncate. Limbs moderately slender. Cephalic 

 femora with ventro-cephalic margin supplied with a few mod- 

 erately elongate, heavy spines, grading evenly distad into a series 

 of more frequent, shorter, moderately heavy spines, terminated 

 by three longer spines in increasing length ratio distad; other 

 femoral margins with a few elongate, moderately stout spines. 

 Tarsal joints elongate, first three each with a very small, rounded 



'* Preoccupied by Phyllodromia of Zetterstcdt (I)iptera), described in 1S37. 



'5 At the present time we can not determine the number of species properly referable 

 to this genus. Numerous species certainly belong here, which are referred to in the 

 literature as "Phyllodromia" and one, at least, as " Ceratinoptcra." 



« Proc. Ent. Soc. Wash., v, p. 234. 



