REVISION OF LEUCOSPIDAE 83 



sternite very shallowly depressed, sparsely punctured and strongly transverse as the more basal 

 sternites. 



Biology. Unknown. 

 Distribution. Paraguay, Argentina. 



Holotype £, Argentina: Catamarca, La Cienaga, 15.x. 1969 (Terdn, Willink & 

 Stange) (IML, Tucuman). 



Paratypes. Paraguay: Villa Rica, xi., 1$ (F. Schade) (MCZ, Cambridge). 

 Argentina: Salta, Yocochua nr Cafayate, 16.iii.1969, 1$ (Porter) (BMNH); 

 Alemania, 27. iv. 1970, 1$ (L. Stange & C. Porter) (IML, Tucuman); Catamarca, 

 Pirquitas, 13.il. 1958, 1 <$ (Colbach) (BMNH); Tucuman, El Siambon, xii. 1945, 1 £ 

 (Olez) (IML, Tucuman); Amaicha del Valle, 30.xii.1965, 1 $ (H. & M. Townes) 

 (Townes); Chaco de Santa Fe, Rio Las Garzas, 25 km E. of Ocampo, 1903, 1$ 

 (Wagner) (MNHN, Paris); Santiago del Estero, Rio Salado, 1$ (Wagner) (FCNM, 

 La Plata); nr Icano, Rio Salado, 2$ (Wagner) (BMNH); La Rioja, La Torre, 

 7.iii.i970, 1$ (Porter & Stange) (BMNH); Villa Union, 23.iv.1972, I <J (Porter) 

 (IML, Tucuman). 



This species is very close to L. birkmani Brues and L. auripyga sp. n. from 

 Mexico and the south-western U.S.A. 



Leucospis imitans sp. n. 



(Text-figs 98, 99) 



$. 10-12 mm. Body black with weak metallic tint which is dark greenish on sides and 

 posteriorly on thorax and on basal half of gaster and more violaceous (if distinct) on head and 

 pronotum; yellow lines border scape beneath, metapleurum posteriorly, hind coxa dorsally, 

 laterally and its apex beneath, hind femur dorsally and ventrally, fore tibia anteriorly, mid 

 knee; hypopygium pale ochreous; tarsi more or less testaceous. Ovipositor sheaths and base 

 of gaster reddish. Wings black at anterior margin, slightly violaceous; hind margin much 

 paler, apex broadly subhyaline, narrow margin whitish. 



Head slightly narrower than pronotum posteriorly, in dorsal view about 2-6 times as broad 

 as long, temples extremely short but distinct. Vertex closely punctured, outside of lateral 

 ocellus with fine rugae diverging forwards; occipital carina sharp and continuous on temples 

 down to lower third of eyes; POL : OOL as 14 : 12; ocellar triangle 2-4 : 1, ocelli of normal 

 size but space between them strongly raised on either side behind median ocellus; laterad of 

 median ocellus smooth triangular space; sharp scrobal carina separated by narrow groove. 

 Frontal protuberances not high but subrectangular. Head in facial view i-io— 1-12 times as 

 broad as high; face finely densely rugulose-punctured, pilosity thin and extremely short; 

 supraclypeal area fairly convex, interantennal lobe with keel. Relative measurements: head 

 width 82, frontovertex 47, breadth of scrobes about 24 (not sharply delimited at toruli where 

 broadest), lower face 41, its height 34, eye 50-0 : 29-5, emargination of inner orbit slightly 

 indicated ; malar space 17, width of mouth 33. Clypeus slightly broader than high, sides strongly 

 diverging, distinctly convex except for depression at emargination of lower margin, this margin 

 hardly produced, with low lobes but no median tooth. Scapus 1*35 times as long as malar 

 space (relative length 23), fully 3 times as long as broad, virtually bare. Flagellum hardly 

 clavate, combined with pedicellus about 1-2 times as long as breadth of head; pedicellus slightly 

 elongate, hardly shorter than following segment, this slightly shorter than second flagellar 

 segment which is about 1 -3, the sixth 1 -06, clava about twice, as long as broad ; last two funicular 

 segments subquadrate. 



