188 DERMAPTERA AND ORTHOPTERA FROM SINALOA, MEXICO 



Type. — d^ ; Villa Union, Sinaloa, Mexico. Septeml)ei- 27, 

 1918. [Hebard Collection, Type no. 865.] 



Size large, form elongate. Head as in limbata, except that the dorsal 

 angle of the facial scutellum is evenly rounded, not bilobate. Pronotum 

 with lateral margins smooth, except on collar where they are very feebly 

 sub-denticulate; supra-coxal expansion moderate, as in limbata; shaft with 

 a decided medic-longitudinal carina. Tegmina with marginal field opaque, 

 rather narrow and narrowing very gradually and evenly from proximal jioint 

 of greatest width, stigma neither defined in color nor with an adjacent suf- 

 fusion. Abdomen with proximal tergites dark distad, forming broad bands. 

 Supra-anal plate transverse, weakly chitinous toward the broadly convex 

 free margin. Concealed genitalia apparently as in limbata, except that the 

 heavy spine of the ventral lobe, similarly directed dextro-proximad, is de- 

 cidedly more elongate. Subgenital plate truncate distad, with a minute 

 median angulate emargination, so that, unlike limbata, each style surmounts 

 a small rotundato-truncate lobe; these lobes are symmetrical, the dextral 

 narrower but projecting further than the sinistral. Cephalic coxae reaching 

 to proximal third of pronotal shaft, cephalic margin armed with (six to nine 

 in the series) small, bluntly rounded spinulae, between which are irregularly 

 scattered a few very minute tuberculations. Caudal metatarsus shorter 

 than combined length of succeeding joints. 



Allotype. — 9 ; Venvidio, Sinaloa, Mexico. August 28, 1918. 

 (J. A. Kusche.) [Hebard Collection.] 



Size very large, form elongate for this sex of Stag»io)nantis, though much 

 heavier than male. Head much as in this sex of limbnta, except that the 

 occiput is more elevated, with vertical impressions more prominent and dorsal 

 outline between juxta-ocular portions showing even weaker convexity, while 

 the facial scutellum is very slightly higher.^- Pronotum with lateral margins 

 finely denticulate on collar, this becoming much weaker on shaft; supra- 

 coxal expansion slightly greater than in females of limbata and narrowing 

 more rapidly caudad, sulci and carina stronger than in male. Organs of 

 flight reduced, covering slightly more than proximal half of abdomen. Teg- 

 mina opaque, stigma indicated by a smooth oval, longitudinal area, (;ostal 

 margin comparatively narrow and narrowing very gradually distad. Hands 

 of proximal abdominal tergites broader, but less conspicuous, than in ninlc 

 Cephalic; coxae reaching to near caudal extremity of i)ronotal sluift, (;cphiilic 

 margin armed witli (eight and eleven) spinulae, which are slightly heavier 

 than in male but of the same type, between wliicli arc irregularly scattered a 

 larger number of very small s[)inulae. 



Coloration. Male. Head, pronotum and body light hrowii. Cephalic 

 femora with a small blackish brown fleck at unguicular sulcus; external 

 surfaces oft-eti showing three very broad transverse bands of (individually 



*2 The difference in this respect is so slight lliat it will prohably l>c IduikI lo 

 have little or no diagnostic value. 



