SUBFAMILY III. LOCUSTINJE. 337 



V. DENDROTETTIX Riley, 52 1893, 254. (Gr., "tree" + "grass- 

 hopper.") 



Species of moderate size and robust form, having the head 

 large, broad; eyes small, prominent, widely separated, no longer 

 than the cheeks below them ; fastigium much widened, strongly de- 

 clivent and shallowly but distinctly concave in front of eyes, its 

 sides continuous with those of frontal costa ; face distinctly, not 

 strongly oblique; frontal costa rather wide, low, shal lowly sul- 

 cate, feebly constricted, its margins slightly converging below the 

 ocellus ; antennae slender, about half the length of body in both 

 sexes; pronotum short, its apical fourth flaring, rugose and up- 

 turned to receive the broad head; metazona much shorter and 

 slightly wider than prozoua, its surface rather strongly rugose- 

 punctate, hind margin truncate or broadly rounded ; lateral lobes 

 with transverse sulci deep, the second and third feebly cutting 

 the low interrupted median carina; tegmina variable in form and 

 length; prosternal spine short, stout, subconical; hind femora 

 slender, slightly shorter than abdomen, female, feebly surpassing 

 its tip, male; hind tibiae very hirsute, their marginal spines long; 

 end of male abdomen not enlarged, subgenital plate scoop-shaped, 

 its apex bluntly rounded ; supra-anal plate long, triangular, with 

 the usual median basal lengthwise ridges enclosing a shallow 

 sulcus. 



KEY TO SPECIES OF DENDROTETTIX. 



* 



a. Cerci of male oblong, twice as long as wide, their apical halves 

 twisted, depressed, with tips blunt; inner and lower faces of hind 

 femora dark blood-red. 149. QUERCUS. 



oo. Cerci styliform, tapering strongly and regularly from a broad base to 

 a point; inner and lower faces of hind femora greenish-yellow, the 

 former with two black bars. 150. SCUDDERI. 



149. DEXDROTETTIX QUERCUS Packard, 1890, 214. Post Oak Locust. 



General color yellow or greenish-yellow varied with piceous. Face 

 yellow; occiput with variable black markings, usually with a black median 

 stripe; antennae yellow with dusky markings; side of head with a postocu- 

 lar black bar, widening on the prozona, where it covers the upper half of 

 lateral lobe; metazona usually greenish-yellow; median carina and trans- 

 verse sulci usually black. Tegmina dull brownish-yellow. Sides of ab- 



62 Caudell (19153) gives reasons why this genus should he accredited to Packard, that 

 author (1890, 2i4) having published a description copied verbatim from Bruner (1887, 19) 

 of the nymphs under the name of "Dendrotctti.r quercus Riley Ms." In this copied de- 

 scription Packard makes no mention whatever of generic characters, and the description 

 of the nymphs is based almost wholly upon color, the only structural characters mentioned 

 being: "The pupae average almost an inch in length and are rather robust in form, with 

 short broad head and powerful jaws," terms which could be properly applied to the last 

 stage nymphs of a score or more of Acrididre. Following strictly the rules of priority 

 Caudell may be correct, but from a common sense point of view, I believe that to Riley, 

 who first gave a name to the genus (Proc. Ent. Soc. Wash. 1888, 86), and later doc. cit. 

 above) a full diagnosis of its characters, should belong the generic name, while to Packard, 

 who described the nymphs, as above stated, should be accredited the species. 



