174 DERMAPTERA AND ORTHOPTERA FROM SINALOA, MEXICO 



Panchlora cahita new species (Plate VII, figure 1.) 



This handsome insect belongs to the green species of the 

 genus, with antennae showing a single dark annulus, but pro- 

 notum without narrow dark lateral lines. 



The tegmina, lacking dots and lines, and heavier limb arma- 

 ment, distinguish it from P. fraterna Saussure and Zehntner, 

 hyalina Saussure and festae Giglio-Tos. In this it agrees only 

 with P. acolhua Saussure and Zehntner, now known from the 

 States of Guerrero and Chiapas, from females only. The present 

 insect is separable from that species by its narrower form and 

 much narrower tegy.ninal marginal field. Males of acolhua will 

 probably show additional features of difference. 



A single female is in the Academy Collection from Guadala- 

 jara, Jahsco, taken by D. L. Crawford, which we refer to the 

 present species with some uncertainty. It is readily distin- 

 guished from the female of acolhua recorded recently by us,-^ by 

 the characters mentioned above and the more strongly bilobate 

 supra-anal plate. ^'^ 



Type. — c?; Venvidio, Sinaloa, Mexico. August 18, 1918. 

 (J. A. Kusche.) [Hebard Collection, Type no. 761.] 



Size medium, form broad for the gemis. Head with eyes rather narrow in 

 front; considerably narrower than in P. cubensis Saussure; separated by a 

 moderately broad space, slightly over half the occipital ocular depth. ^'' Pro- 

 notum broad for the genus, the lateral portions not clear, transparent but 

 tinged with greenish, the marginal field filled with a network of coarse, opaque 

 greenish veinlets.^^ Supra-anal plate strongly bilobate. Cerci small, ex- 

 tending very slightly beyond the apex of the produced supra-anal plate, 

 tapering distad, the last joint flattened, elongate-triangular, witli iipvx sharply 

 rounded. Subgenital plate transverse, asymmetrical, the sinistral portion 



22 Trans. Amer. Ent. Soc, xlvii, p. 213, (1921). 



-^ In this specimen the interocvdar space is hazel, the face mesad and dorsal 

 margins of the femora suffused with chestnut brown, while the antennal 

 annulus occupies sixteen joints. The measurements arc, for this female: 

 length of body, 23; width of interocular space, 1; length of pronotum, 6.2; 

 width of pronotum, 8.7; length of tegmen, 21.8; width of tegmen, 8; width of 

 tegminal marginal field, 1.7 nun. Additional material is needed to determine 

 whether these features indicate si)ecific differentiation or are due only to indi- 

 vidual variation. 



2'' Varying in the series from slightly less to decidedly greater than half 

 that dimension. 



26 Varying in intensity in the series and in rare examples al)sent from the 

 larger port-ion of this field. 



