SYNTOMASPIS.— EUBYTOMA. 107 



SYNTOMASPIS. 



Syntomaspis, Foerster, Hymen. Stud. ii. p. 43. 



A genus of small extent, chiefly distinguished from Diomorus by the absence of 

 teeth from the posterior femora, and from Torymus by the scutellum having a transverse 

 line a little past the middle. The species are parasites on gall-flies. 



1. Syntomaspis maculipennis. 



iEneo-viridis ; flagello antennarum nigro ; genieulis, apice tibiarum tarsisque flavo-testaeeis. 

 Long. 4| millim., terebra fere 4 millim. 



Hah. Mexico, North Sonora {Morrison). 



Head and thorax (except the pleurae behind, where they are smooth, shining, 

 impunctate, and of a bluish tint) strongly and closely punctured. Scutellum behind 

 the transverse line much finer and closer punctured than it is in front of it. Front 

 excavated above the antennae in the middle ; the face coppery. Antennae rather slender, 

 the flagellum getting thicker towards the apex ; its third joint longer than fourth, the 

 apical compressed. Scape thin, cylindrical, reaching to the lower ocellus. Annellus 

 longer than broad, thicker and rounded at the apex. Abdomen smooth, shining, coppery. 

 Coxae rather strongly, femora obscurely, punctured. The coxae are coppery ; femora 

 black, with a slight coppery tint. The posterior tibiae are black, except at base and 

 apex ; the anterior are for the greater part testaceous in front, coppery behind. The 

 tarsi are of a clear yellow, except that the apices of the joints of the posterior tarsi 

 are fuscous ; the long spur of the calcaria reaches a little beyond the middle. The 

 ovipositor is as long as the body. Wings clearly hyaline ; humerus testaceous ; ulna 

 and cubitus blackish, at the latter is a fuscous fascia. The posterior edge of the basal 

 segment of the abdomen incised. As with most of the species, the coppery tints are 

 irregularly distributed over the body. 



The present species differs from most of the European in having the scutellum finely 

 punctured behind the transverse line, that part being generally shining and impunctate. 



Subfam. EURYTOMINM 



This subfamily is distinguished by having the body not metallic, the prothorax 

 large, acute laterally, quadrate, the antennae with not more than eleven joints, and the 

 abdomen compressed and convex above. 



The species are parasites on gall-insects of various orders, so far as is known. 



EUEYTOMA. 



Eurytoma, Illiger, Fauna Etr. ii. p. 127. 



This genus is a common one in the Palaearctic and Nearctic Regions. We now add 

 three new species from Central America ; two of these (E. aurifrons and JE. argentata) 



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