144 



WILLIAM MORTON WHEELER. 



Male. (Fig. 5.) Length 5-5.5 mm. 



Black ; venter and posterior margins of gastric segments fuscous ; an- 

 tennae whitish but appearing somewhat infuscated on account of a covering 

 of very short black hairs ; antennal scape black, second joint paler than the 

 succeeding joints. Mandibles reddish, black only at their bases. Tarsi 

 infuscated from the tip of the first joint. Wings blackened, apical third 

 hyaline ; veins and stigma black. 



Mandibles longitudinally striated, especially at the base ; smooth and 

 shining towards their tips. Clypeus shining in the middle, irregularly and 

 coarsely rugose at its lateral and posterior edges. Head subopaque, with 

 several systems of rather indistinct, parallel ruga; with smooth interrugal 

 spaces ; one system runs transversely just behind the clypeus, another on 

 either side from the frontal carina obliquely to the anterior ocellus, where 

 it meets the corresponding series from the other side ; another system runs 

 transversely between the two posterior ocelli, while still another is continued 

 downwards from each of these ocelli to the sides and back of the head. 



FIG. 5. Erebomvrma Longii sp, nov. Male. 



Mesonotum subopaque, remainder of thorax smooth and shining except the 

 neck and mesopleuras which are opaque. Mesonotum with a smooth me- 

 dian band only on its. anterior half, the remaining surface more densely 

 covered with elliptical foveolas than in the female. Metanotum and pos- 

 terior portion of scutellum with fine parallel transverse rugae. Mesopleuras 

 and sides of pronotum sparsely foveolate. Metapleurae longitudinally 

 rugose. Epinotum almost impunctate. Petiole and postpetiole somewhat 

 roughened and subopaque, node of former smooth and shining, as is also 

 the gaster. The sculpture of the gaster is like that of the female but more 

 indistinct. 



Body covered with rather dense, yellowish-gray hairs, which are sub- 

 erect on the head, thorax and abdomen, but appressed on the legs. There 

 are a few hairs on the shining surface of the epinotum and on the petiolar 

 node. On the antenna? the hairs are microscopic, except on the scape 

 where they are dense and rather conspicuous. Wings covered with minute 

 black hairs. 



