190 DERMAPTERA AND ORTHOPTERA FROM SINALOA, MEXICO 



differing further in the proportionately shorter pronotum and 

 tegmina which are moderately, though not greatly, produced at 

 their apices. Like in godmani, the apices of the wings alone 

 are darkened, while the lateral productions of the abdominal 

 tergites are very similar. The female sex of these species is 

 unknown. 



Type.- — cf ; Venvidio, Sinaloa, Mexico. July 28 to August 1, 

 1918. (J. A. Kusche.) [Hebard Collection, Type no. 866.] 



Size medium, form normal for the genus. Head with juxta-ocular por- 

 tions of occiput each produced dorsad in a small blunt tooth; ocelli large 

 and approximate, forming a triangle slightly broader than deep, above which 

 there is a fine but distinct carina, this carina forming an obtuse-angle dorsad ; 

 facial scutelknn with depth about two-fifths its width, dorsal margin finely 

 carinate and with a small, projecting tubercle on each side of the median 

 ocellus. Pronotum of normal form for genus; surface with a few minute 

 irregular, scattered tubercles, particularly cejihalad, and with a pair of much 

 larger tubercles just before caudal margin. Tegmina and wings fully de- 

 veloped, the former transparent in greater portion of discoidal and anal 

 fields, elsewhere suffused; costal margin twice strongly convex, mesad strongly 

 concave, distad weakly concave to the rounded produced apex, which portion 

 is slightly longer than broad. Wings with distal portion heavily suffused, 

 elsewhere transparent with obscure flecks; the apices briefly produced and 

 founded. Abdomen with fourth tergite produced on each side in a large, 

 roughly quadrate, lamellate lobe, with its distal and caudal margins irregu- 

 larly serrate; fifth tergite with a smaller, but similarly specialized, triangular 

 lobe, this tergite narrowing strongly caudad; the succeeding tergites much 

 narrower, with lateral margins terminating caudad in a minute tubercle on 

 each side. Supra-anal plate transverse, rounded sub-bilobate. Cerci 

 lamellato-lobate distad, as characteristic of genus. Subgenital plate with 

 margin transverse between the small styles. Cephalic femora lamellate 

 dorsad, with a small triangular projection at base of this margin, which is 

 decidedly weaker than that developed in A. falcata Stal. Median and caudal 

 lini])s proximad covered very thickly with very fine, elongate hairs. IVIedinn 

 tibiae strongly narrowed mesad, then gradually thickening to i\\w\. 



Coloration that of a dead leaf, individually varying from dark vandj-ke 

 brown to clay color. Spot at stigma shining, always slightly darker. Pro- 

 notum with a pair of dark brown triangular markings mesad on shaft. Trans- 

 I)arent portions of tegmina and wings jxaler than elsewhere, the wings, as a 

 result, with greater portion not darkened as in falcata. 



The measurements (in millimeters) of the type are given first, followed by 

 the extremes in the paratypic males. Length of body, 36, 25.4 to 39.5; 

 length of pronotum, 10.2, 9.9 to 10.4; length of tegmcn, 35.1, 32 to 35.2; 

 greatest width of tegininal marginal field, 4.3, 4 to 4 ; length of c(;phalic 

 fenmr, 10.9 to 10.2 mm. 



