192 dermaptera and orthoptera from sinaloa, mexico 



Phasmidae 

 heteroneminae^^ 



Diapheromera erythropleura new species (Plate VII, figures 12, 13 and 



14.) 



This is a very slender species, with head, however, no longer 

 than the pronotum. In the male the pleura are bright red, the 

 seventh tergite is half again as long as the eighth (penultimate) 

 tergite, the cerci are unarmed proximo-internally, while the 

 ventral margins of the median and caudal femora as well as the 

 moderately prominent medio-longitudinal ventral carina of the 

 latter are microscopically denticulate. In the female the color 

 is uniform green, the seventh tergite is half again as long as the 

 eighth, the cerci are very elongate, being almost as long as the 

 ninth (ultimate)" tergite, while the ventral margins of the median 

 and caudal femora are not serrulate and no medio-longitudinal 

 carina is developed ventrad. 



Type. — cf ; Venvidio, Sinaloa, Mexico. September 2, 1918. 

 (J. A. Kusche.) [Hebard Collection, Type no. 867.] 



Size medium, form very slender for the genus. Surface smooth and shin- 

 mg, pronotum and mesonotum with a subobsolete sulcus on each side just 

 before the lateral margins, formed by a series of minute impressions. Seventh 

 tergite moderately enlarged in distal two-thirds, eighth transverse, ninth 

 (ultimate) strongly convex in dorsal portion, length subequal to width, 

 caudal margin nearly rectangulate-emarginate with apex rounded, leaving 

 the apex of the minute supra-anal plate exposed. Cerci unarmed, moderately 

 elongate, curving moderately inward, with internal surface flattened and 

 apex rounded. Subgenital opercle small, formed by eighth sternite, which is 

 minute, weakly bilobate distad, and ninth sternite which is small, cucullatc, 

 tapering distad to the nearly acute apex, its length equal to that of the ulti- 

 mate tergite. Cephalic femora slightly longer than combined length of 

 pronotum and mesonotum. Median femora much heavier but not to the 

 degree usual in males of the genus. Median and caudal femora with distal 

 spine of vcntro-internal margin heavy and showing a weak sigmoid tendency. 

 M(!dian and caudal tibiae with medio-longitudinal carina of ventral surface 

 denticulate, this and the lateral carinae each terminating distacl in a tuft of 

 spiniform hairs. 



Allotype. — 9 ; same data as type, [Hebard Collection.] 

 Agrees with male (ixccjpt as follows and as noted above. Size larger, form 

 decidedly heavier, though much more slender than is usual in females of 

 Diapheromera. Distal tergites not tliickened, seventh sliglitly longer than 



"This is the correct name for the subfamily termed tlic tribe Bacunculini 

 by Brunner. 



