REVISION OF LEUCOSPIDAE 97 



with pale keel separating the densely punctured epipleurum. Second tergite narrowly 

 exposed, punctured, its epipleurum about as long as high. Following tergites more or less fused, 

 generally more densely punctured in broad band at hind margins, this less apparent on third 

 tergite; epipleura not separated. Fourth and fifth tergites posteriorly, sixth tergite wholly 

 densely punctured and golden, covered with long decumbent golden hairs which converge 

 arcuately towards median line; most apparently so on sixth tergite which has a median keel; at 

 base of fifth tergite keel indicated by a smooth strip; hind margin of fourth tergite broadly excised; 

 hind margin of the sixth not elevated, without lateral auricles. Epipygium slightly transverse, 

 broadly transversely depressed, median keel barely indicated; a slight longitudinal elevation 

 above cerci; hind margin rounded, not swollen. Last two sternites golden, moderately de- 

 pressed, last sternite along middle, the sixth (penultimate) transversely so; last sternite slightly 

 broader than long, sides strongly converging, apex narrowly truncate and subemarginate; 

 penultimate sternite more than twice as broad as long, preceding sternites still more transverse, 

 their puncturation increasingly coarser towards base of gaster, as well as degree of convexity. 

 §. Unknown. 



Biology. Host unknown. 



Holotype <$, Brazil: Minas Geraes, Passa-Quatro, Las Tronqueras, 1904 

 (Wagner) (MNHN, Paris). 



Before I examined the holotype of L. sumichrastii Cresson I thought that the 

 male described here as L. addenda might belong to the former species. L. addenda, 

 however, clearly belongs to the species with the lower tooth of the mandibles 

 separated by a semicircular gap (Text-fig. 119), whilst this tooth in sumichrastii 

 is separated by a triangular notch (Text-fig. 102). In the cayennensis-group 

 L. addenda, together with L. clavigaster sp. n., has only a moderate pilosity on the 

 propodeum, as stressed in the key; all the other species of that group have the 

 propodeum unusually densely pubescent. 



Leucospis metatibialis sp. n. 



(Text-fig. 113) 



9. 6-4-7'4 mm. Black, with weak metallic tinge on thorax and gaster but head bright 

 cupreous; whitish yellow are scapus beneath, sometimes pronotum at hind margin, mesoscutum 

 along lateral and posterior margins, a broad spot on upper mesepisternum, narrow line dorsally 

 on fore tibia and basal part of mid tibia, sometimes a lateral line on hind coxa, broad dorsal 

 and short ventral streaks on hind femur, hind tibia broadly along dorsal edge and indistinctly 

 hind margin of pronotum; antenna except apically, then pronotum and propodeum or even 

 metapleurum, reddish; fore and mid legs and gaster beneath reddish brown. Wings moderately 

 infumate, slightly darker along anterior margin. 



Head hardly narrower than pronotum posteriorly (52 : 53), dorsally 2-oo-2-i5 times as broad 

 as long; occipital carina not high, disappearing laterad of ocelli; temples rather broad, distinct, 

 nearly one-third as long as eye in dorsal view, subparallel; POL about 0-9 the OOL, ocellar 

 triangle about 2:1, with fine carina from lateral ocellus to centre of median ocellus. Scrobal 

 margins hardly carinate at frontal protuberances and at median ocellus. Vertex punctured 

 with longitudinal rugae in front of lateral ocelli; face finely rugulose-punctured, dull but slightly 

 shiny on vertically convex supraclypeal area where interspaces are more conspicuous; median 

 carina of interantennal lobe not distinct; pubescence whitish, moderately short. In facial 

 view head 1 -16 times as broad as high, height to shortest distance between eyes (below antennae) 

 G 



