NO. 2130. NORTH AMERICA RHAPHIDOPEORINAE—CAUDELL. 685 



Genus DAIHINIA Haldeman. 

 Baihinia Haldeman, Proc. Amer. Assoc' Adv. Sci., vol. 2, 1850, p. 346. 



This genus is remarkable in the structure of the fore and hind tarsi, 

 where there are only three segments developed instead of four, as in 

 all other known genera of the subfamily. The f astigium of the vertex 

 is not tuberculate and the antennae are not very long; the palpi are 

 short, the third and fifth segments of about equal length, the fifth 

 sulcate ventrally in the apical half, fourth segment a httle shorter 

 than the third or fifth, the first and second not or barely more than half 

 as long as the third, the first the shorter. Pronotum truncate before 

 and behind; lateral lobes subquadrate or slightly longer than high, 

 the lower margins horizontal and broadly rounded; meso and meta- 

 notum together approximately as long as the pronotum, the lateral 

 lobes descending about as far as those of the pronotum, their lower 

 margins rounded. The posterior femora are armed beneath in the 

 type-species, hrevipes, and unarmed in phrixocnemoides CaudeU; hind 

 tibiae armed above on both margins with about half a dozen very 

 large spines, those on the inner margin somewhat longer, a few smaU 

 serrations between some of the longer spines, especially on the basal 

 half of the tibia. Ovipositor moderately stout and somewhat longer 

 than the pronotum, the inner valves in the adult armed beneath with 

 four long subapical teeth and terminated 

 by an apical hook; subgenital plate of the 

 male deeply fissured apicaUy. 



There are two species referred to this ge- 

 nus and they may be separated as follows: 



KEY TO THE SPECIES OF DAIHINIA. 



Posterior femora of both sexes armed beneath; hind 



tibiae with the large dorsal spiirs naked and the 



apical four on the inner margin mostly separated 



by spaces fully as great as their own width 



(fig. 25); claws of hind tarsi scarcely more than 



one-half as long as the segment from which they 



arise brevipes Haldeman 



Posterior femora of female, and probably also of the 



male, unarmed beneath; large dorsal spurs of the 



hind tibiae distinctly pilose and the apical four 



or five mostly separated by distances scarcely as 



great as their own width; claws of hind tarsi 



almost as long as the segment from which they 



arise phrixocnemoides Caudell. 



DAimNIA BREVIPES Haldeman. 

 _,, . • T . J- ii • Fig. 25.— Daxhinia BKEVBPES. Hnro 



This species, the type ot the genus, is a tibia and taksus of female, ra- 

 large robust brown msect occurring from nee side. 

 Louisiana, the type-locaUty, north to Wyoming and North Dakota. 

 In size it varies moderately, adults before me measuring as follows : 



