440 PROCEEDINGS OF THE NATIONAL MUSEUM vol.88 



ORASEMA TEXANA, new species 



This species is distinguishable at once from all others known to me 

 by having the abdominal petiole very nearly twice as broad as long 

 and by having the middle lobe of the mesoscutum anteriorly broadly 

 impressed medially. 



Female. — Length 2.9 mm. Head dark metallic green; thorax 

 blackish with rather strong metallic tints on the dorsmn; abdomen, 

 except the petiole, brownish black with strong metallic green and 

 bronzy reflections ; scape and pedicel pale yellow ; flagellum brownish 

 black ; coxae concolorous with the thorax ; femora all f uscometallic on 

 basal two-thirds; trochanters, apices of femora, all tibiae, and all 

 tarsi pale yellow ; wings hyaline, venation yellow. Abdominal petiole, 

 propodeum, and pleura dull blackish with only a very slight metallic 

 tinge. 



Head alveolately punctate, the alveolae irregular in shape and size 

 and on the frons more or less elongate; middle lobe of mesoscutum 

 sculptured about like the head ; scapulae more weakly and finely retic- 

 ulated than the prescutum and each with a shallow impression near 

 the inner posterior angle ; parapsidal grooves very deep and distinctly 

 foveated; scutellum irregularly rugulose, with a shallow depression 

 medially a little in front of the transverse fold, the transverse fold 

 strong and not distinctly foveated, the lateral grooves very weak and 

 inconspicuous ; axillae higher than the scutellum and rugulosely sculp- 

 tured, not alveolate ; metanotum rugose ; propodeum very finely and 

 rather evenly reticulately sculptured and with a weak median carina, 

 the spiracular grooves complete and weakly f oveolated ; pleura finely 

 and nearly uniformly punctate; abdominal petiole and hindcoxae 

 finely sculptured ; gaster of abdomen smooth and about as large as the 

 thorax ; second sternite faintly granulose. Dorsal valve of ovipositor 

 with nine distinct teeth. 



Antennal scape cylindrical, slightly thickened throughout its length, 

 not attaining front ocellus ; pedicel globose ; flagellum not clavate, very 

 slightly thicker than pedicel; ring joint distinct but strongly trans- 

 verse ; first funicle joint about one and one-half times as long as broad, 

 following funicle joints subquadrate; club three-jointed, not thicker 

 than funicle and a little longer than two preceding joints. Clypeus 

 nearly twice as broad as long, weakly rugulose, its anterior margin not 

 straight but slightly convex ; clypeal f oveae deep and joined by a dis- 

 tinct groove ; supraclypeal area well defined, nearly twice as broad as 

 long, weakly rugulose, a shining smooth area medially ; cheeks a little 

 shorter than eyes ; ocellocular line about one and one-half times as long 

 as the diameter of lateral ocellus and distinctly shorter than distance 

 between posterior ocelli. 



Forewings approximately two and one-half times as long as broad, 



