Die Hymenopteren-Gruppe der Evaniiden. III. iy3 



Gasteruption sericeum Cam. 



Gasteruption sericeum Cam., Biolog. Cent. Amer., p. 424, o\ J,Tab. XVIII, Fig. 3 , , Fig. 1 $ . 1887 



»Nigrum, argenteo-pilosum, basi tarsorum anteriorum basique tibiarum albis, ab- 

 domine, lateribus tegulisque rufo-testaeeis; 5 terebra quam dimidio abdomen longiore. 

 cf, 9. Long. 1 1 — 13 mm.; terebra 5 — 6 mm. 



Flagellum rather attenuated at the base; the third Joint equal in length to, it' not 

 shorter than, the rirst and seeond joints united, and shorter than the fourth Joint. Head 

 in the centre (except on the front), and on the vertex, denselv covered with a close 

 silverv-white pubescence, impunetate, the vertex shining; the cheeks a little shorter than 

 the seeond Joint of the antennae; the hinder ocelli separated from each other by a space 

 about equalling the length of the seape, and from the eyes by about the length of the 

 seeond Joint. 



Prothorax short, not much longer than its lateral depth, covered with a thick close 

 silkv pile; above finely rugose. Mesonotum opaque, coarselv, transversely rugosely 

 striated, the lateral lobesnot so strongly asthe middle ones; scutellum strongly aciculated; 

 pleurae shagreened below and, as well as the sternum, thickly covered with a silvery- 

 pubescence; metanotum almost shining, irregularly transversely roughened. Abdomen 

 opaque, shagreened, the basal three segments on the lower side testaeeous. Hind coxae 

 hnelv but obscurelv striated laterally; hind tibiae considerably thickened, opaque, cha- 

 greened; spurs testaeeous; metatarsus longer than all the other joints united. 



The male has the tips of the antennae rufous, and the sculpture on the pleurae 

 (especiallv behind) much stronger. The base of the four anterior tarsi is broadly white; 

 all the tibiae are white at the base; the front tibiae incline to testaeeous; and the tegulae 

 are testaeeous. The colour of the legs varies, as does also the intensity of the sculpture 

 on the thorax.« Cam. 



Subreg. 3. 



Guatemala. 



G. sericeum unterscheidet sich von tenuicolle durch den quergestreiften, nach 

 hinten unregelmässig gerunzelten Rücken und den längeren Legebohrer, von ^apotecum 

 durch den längeren Legebohrer, durch den glänzend glatten Scheitel, der bei ^apotecum 

 matt, und durch das Fehlen der zerstreuten, feinen Punkte, wovon Cameron keine 

 Erwähnung macht. 



Gasteruption macroderum n. sp. 



9. L. i3 mm. Caput angustatum et subnitidum; capitis pars occipitalis medioeriter 

 longa et obeonica (Tab. XXI, Fig. 118 a), margine postico simplici. Genae brevissimae. 

 Flagelli articulus seeundus quam primus fere duplo longior, tertius seeundo longior, 

 primo unacurn seeundo brevior (Tab. XXI, Fig. 1 1 8 b). 



Collum valde elongatum, gracile. Mesonotum omnino opacum. Segmentum 

 medianum tenuiter reticulato-rugosum. Coxae posteriores tenuiter transverso-striolatae. 

 Terebra corpori longitudine aequalis, vaginis nigris, apice albis. Nigrum, pedibus 

 quatuor anterioribus testaeeis, duobus posticis bruneis tarsis basique tibiarum exceptis 

 albicantibus. 



9. Kopf schmal und schwach glänzend. Hinterkopf massig lang und so ziemlich 

 kegelstutzartig verschmälert nach hinten (Taf. XXI, Fig. 118 a). Kopfhinterrand einfach. 

 Wangen sehr verkürzt. Abstand der hinteren Nebenaugen von den Netzaugen kaum so 

 gross wie die Länge des ersten Geisselgliedes, ihr gegenseitiger Abstand grösser als die 



