ANATOMY OF MARELLIA REMIPES — CARBONELL 



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The clypcus, lahriim, and epipharynx. — The clypeolabral region of 

 the head (figs. 2, 5, Clp, Lm) does not differ much from the same 

 region in other grasshoppers. The clypeus (fig. 2, Clp) is distinctly 

 separated from the frons by a frontoclypeal or epistomal suture {es). 

 Its Hmit with the labrum is similarly marked by the clypeolabral 

 suture. The labrum is slightly asymmetrical, this asymmetry being 

 more noticeable from its posterior or epipharyngeal surface (fig. 5 A) 

 because of the irregular distribution of the bristlelike hairs that cover 



B Md Mx 



Fig. 2. — The head of Marellia remipcs. 



A, anterior view (palpi not drawn). B, lateral view. 



Ant, antenna; at, anterior tentorial pit; Clp, clypeus; Cv, cervical sclerites; 

 E, compound eyes ; es, epistomal suture ; Ge, gena ; h, subocular ridge ; i, frontal 

 carina; /, subantennal suture; Lb, labium; Lm, labrum; Md, mandible; Mx, 

 maxilla; O, ocellus; Ocs, occipital suture; sgs, subgenal suture. 



some of its surface. The tormae {Tor) are clearly visible in the limit 

 of the clypeus. 



The mandibles. — The mandibles of Marellia remipes (fig. 3) are, as 

 in all grasshoppers, asymmetrical, the left mandible being larger than 

 the right one and broadly overlapping it when closed. The mastica- 

 tory or mesal edge of each mandible is differentiated into a molar 

 area {ma) and an incisor lobe {il). As far as these features are con- 

 cerned, the mandibles of Marellia follow the general structure of the 

 grasshopper mandible. There are, however, several details that will 

 be referred to below, which are peculiar to this particular insect. 



