CYDNIDAE OF THE WESTERN HEMISPHERE — FROESCHNER 365 



Scutelliim.^ — ^Surpassing apices of clavi, latter not forming a com- 

 missure beyond apex of scutellum. 



Thoracic pleurae (fig. 88): Posterior margins fully developed; pro- 

 pleuron with anterior and posterior convexities. 



Legs: Not especially modified; tarsi with segment II thinner than 

 I or III; anterior tarsus inserted at apex of tibia. 



Sternites: Sutures faintly crenulate, curved anteriorly in middle 

 third; sternites III to VII with two trichobothria arranged in hori- 

 zontal rows posterior to the spiracles (fig. 174). 



Type of subfamily. — Genus G.arsauria Walker (1868, p. 536), of 

 which Microhynchus Signoret (1882, p. Ixiii), Microrrhamphus Ber- 

 groth (1891, p. 214), and Brachyrrhamphus Haglund (1894, p. 400) 

 are all established synonyms. 



Distribution. — Literature records show the range of this group 

 to extend from the Malay Archipelago eastward across southern 

 Asia into Africa. 



Discussion. — At present, this subfamily consists of the single 

 genus Garsauria Walker with the genotype G. aradoides fixed by the 

 monobasic original proposal. In addition, there are four other species 

 that have been proposed under this generic name. All of these are 

 extralimital to the present study and so will not be considered further 

 here. 



Scaptocorinae, new subfamily 



Diagnosis. — The peculiar cultrate anterior tibia with the tarsus 

 inserted at its midlength (fig. 115) will separate this subfamily from 

 all others in the Cydnidae. 



Description. — Head: Subquadrate; lateral margins with oblique 

 crenulations (fig. 20); antennae 4-segmented. 



Scutellum: Long, surpassing apices of clavi, latter not forming a 

 commissure posterior to scutellar apex. 



Wings: Venation of posterior wings (fig. 165) with Sc and R leaving 

 radial cell at antero-apical angle, juncture of r-m and M basad of 

 fracture in Sc+R, radial cell receiving short hamus from M. 



Thoracic pleurae (fig. 85): Posterior margins not fully developed; 

 propleuron with no posterior convexity; mesopleuron shrunken pos- 

 teriorly, hind margin concave, exposing mesometapleural membrane 

 for most of its width; metapleuron shrunken posteriorly, reaching 

 base of abdomen laterally, thence inwardly curving anteriorly and 

 partly exposing internal portion of posterior coxa. 



Legs: Strongly modified; anterior tibia (fig. 115) depressed, strongly 

 cultrate, greatly projecting beyond tarsal insertion so that tarsus 

 arises at its midlength, without a dorsal row of spines; middle legs 

 (fig. 133) obliquely impressed, dorsally distinctly curved, with rows of 

 stout bristles, these absent on ventral face, tarsal insertion subapical; 



