MORGAN HEBARD 303 



A NEW CENTRAL AMERICAN GENUS AND SPECIES 



OF THE GROUP BLATTELLITES (ORTHOPTERA; 



BLATTIDAE; PSEUDOMOPINAE). 



BY MORGAN HEBARD 



In Studying large Panamanian collections of Blattidae, we 

 have recently examined much of the undetermined material of 

 this family available. In material, as yet unreported, from Mexico 

 and Nicaragua, a pair of a Blattellite, particularlj^ remarkable in 

 the character of the tarsal claws, has been found. This material 

 we desire to treat at the present time, in order that the name maj' 

 be quoted in the Panamanian study now being prepared. 



ANTITHETONi new genus 



The present genus is remarkaljle in having asymmetrical tarsal 

 claws, .a feature characteristic of the typical genera of the Nycti- 

 borinae and the genus Chorisoneurar, though in all other respects 

 clearly a Pseudomopid of the Group Blattellites. This species, 

 and the species of the genus Latiblattella, represent the onh- 

 forms of the Pseudomopinae known to us which show this type 

 of tarsal claw specialization. 



In linear arrangement we place this genus after LotiblatteUa 

 Hebard and before MacrophyUodromia Saussure and Zehntner. 

 The genus is, however, distinctive and shows little affinity to any 

 of the other genera, though superficially and in general appear- 

 ance alone agreeing more closely with Platijlestes Hebard. 



Genotype. — Antitheton iniquiungues new species. 



Sexes similar. Size rather large, form very Inroad for the 

 Group Blattellites. Head with eyes well separated; lateral 

 margins of face distinctly convergent ventrad. Tegmina rather 

 decidedly chitinous for the Group; discoidal sectors numerous, 

 oblique but moderately radiating, so that they are strongly 

 oljlique beyond apex of anal field, but toward the discoidal vein 

 parallel to it. Wings with costal veins weakly thickened distatl; 



' From di^Tt0«7-oi'=antithe.si.s. 



- Though a striking feature, we find no mention of it heretofore in the 

 literature. 



TRANS. AM. ENT. SOC, XLV. 



