Vol.1] Bradley. — The Taxonomy of the Masarid Wasps 433 



Trimeria Saussiire 



Figures 23, 38, 39, 53-55, 84, 105 



1912. Trimeria Zavattari. Arehiv fiir Naturgescliichte, vol. 78, pt. A, 

 no. 2, p. 58. Eedescription. 



cf. Head transversely quadrate ; the temples narrow, margined pos- 

 teriorly, rectangular below ; eyes triangularly emarginate, the apex of 

 the incision slightly obtuse, distant from one another above ; the ocelli 

 in an equilateral triangle ; vertex prominent ; front nearly tlat, with- 

 out tubercles ; clypeus slightly convex, shield-shaped, its anterior mar- 

 gin broadly shallowly emarginate ; mandibles broad, obliquely triden- 

 tate toward the apex ; ligula elongate and retractile ; labial palpus 

 completely 3-segmented ; maxillary palpus reduced to a transparent, 

 very short, conical tubercle. Antenna much shorter than the thorax, 

 of 12 distinct segments, not clavate but the flagellum slightly fusiform ; 

 scape long, cylindrical, pedicel less than one-third as long, remaining 

 segments short, as broad or broader than long, the seventh to the tenth 

 dilated a little mesally beneath. 



Dorsal surface of pronotum anteriorly transversely margined ; 

 parapsidal furrows wanting ; tegula small, oval, not covering the base 

 of the scutellum, the outer margin not sinuate, or scarcely so ; scutellum 

 rather flat, in some species posteriorly margined with a reflexed rim 

 overhanging the postscutellum ; posterior surface of propodeum slop- 

 ing, the angles mucronate. 



Forewing not plaited, R- absent, the cells R^ and R., therefore 

 coalesced ; m-cu attached to Cuj, which from that point turns down- 

 ward to meet M^. Anterior trochanter armed at apex with a process 

 with two upturned lamellate edges ; anterior femur with its posterior 

 inferior edge somewhat angled and sinuate; middle femur flattened 

 beneath ; tibiae with regular surfaces ; anterior tibial spur strongly 

 curved, slender, acute ; middle tibia with a single apical spur ; larger 

 posterior tibial spur bifid at apex ; tarsal claws simple. 



Abdomen sessile, the basal dorsal segment squarely truncate at 

 base, the apical segment short, hoodlike, strongly decurved toward and 

 weakly notched at the apex ; second and third ventral segments un- 

 armed ; last ventral segment with its apical border truncate. 



Squama ending in an upturned acute hook, a tubercle on the inner 

 side apicad of the sagitta, which is reduced to a larger tubercle borne 

 on the inner side of the squama; uncus very broad and flat, obtuse, 

 beneath with two long sharp barbs at base. 



I have not seen a female. 



Type. — Trimeria americana Saussure, genus monobasic. 



Habitat. — Brazil and Argentina. 



