REVISION OF LEUCOSPIDAE 39 



- Ovipositor not reaching anterior third of fifth tergite; interantennal area without 



keel; fore wing weakly infumate; South America . enderleini Ashmead (p. 90) 



35 Hind coxa dorso-posteriorly with a broad obtuse-angular thin lobe (Text-figs 67, 69, 



71); scutellum (as far as known) without yellow colour; in known forms $ with 

 petiolate gaster; $ with unusual hairy fascia on gaster ..... 36 



- Hind coxa instead of lobe with a conspicuous tooth (Text-fig. 74) which may be less 



distinct in dwarfs (under 6 mm) ; scutellum usually at least posteriorly yellow; £ 



and § otherwise ............ 37 



36 Only ^ known, its gaster unusually petiolate (Text-figs 64-66), first tergite 1-5 



times as long as broad; hind femur with interspaces nearly as broad as punctures; 

 Mexico ........ bulbiventris Cresson (p. 69) 



- Only $ known : fourth tergite with thick whitish hairs which converge sideways to 



median cross-line of tergite (Text-fig. 68) ; hind margin of fifth tergite and some- 

 times also apex of gaster with denser pilosity; gaster without yellow markings; 

 S. America ........ manaica Roman (p. 69) 



37 Dorsellum bare, subtriangular, 2-0-2-3 times as broad as long, with deep and broad 



crenulate furrow along margin (Text-fig. 72); hind femur very broad, 1-72-1-84 

 times as long as broad, teeth excluded (Text-fig. 74) and interspaces of punctures 

 on upper mesepimeron dull, obliquely strigose; ovipositor sometimes not reaching 

 base of gaster ............ 38 



- Dorsellum at least sparsely hairy, more plain, admarginal groove shallow; hind 



femur mostly much more slender and, if about as broad as above (in pulchriceps), 

 then interspaces of punctures on upper mesepimeron smooth and shiny; ovipositor 

 always reaching thorax .......... 39 



38 Ovipositor nearly reaching base of gaster or still more forward; vertical length of 



eye often slightly greater than breadth of frontovertex (0-95-1-11 : 1; Text-fig. 

 73) ; first tergite in $ usually with two yellow spots posteriorly; N.E. Argentina to 

 Trinidad .......... egaia Walker (p. 72) 



- Ovipositor shorter, not reaching basal third of first tergite; length of eye slightly 



less (0-93-0-99) than breadth of frontovertex (^ $); first tergite in $ without 

 yellow spots; Argentina ....... coxalis Kirby (p. 71) 



39 Interspaces of punctures on convex upper mesepimerum quite or virtually smooth, 



shiny and hind femur relatively broad (Text-fig. 79), teeth excluded at most 

 twice as long as broad (mostly broader) ....... 40 



- Interspaces on mesepimerum dull, distinctly subhorizontally striate; hind femur at 



least 2-1 times as long as broad, teeth excluded (Text-fig. 83) .... 41 



40 Interspaces of mesepimerum quite smooth; hind femur broader, mostly i-8c— 1-86 



times as long as broad ; narrow yellow line on posterior margins of pronotum and 

 scutellum, in $ gaster with fifth tergite black but a yellow band connecting both 

 halves of sixth tergite across epipygium dorsally; Argentina 



pulchriceps Cameron (p. 73) 



- Interspaces of punctures on mesepimerum shallowly striate; hind femur about 



twice as long as broad (Text-fig. 7*9); scutellum with broad yellow band (Text- 

 fig. 78), pronotum with short anterior and long posterior band, in $ fifth tergite 

 and epipygium dorsally mainly black; Colombia . . colombiana sp. n. (p. 74) 



41 Thorax with yellow lines of subequal breadth bordering almost completely pronotum, 



and lateral and posterior margins of mesoscutum and of scutellum (Text-fig. 76) ; 



hind leg relatively broader; S. Brazil ..... aliena sp. n. (p. 78) 



- Yellow pattern on thorax different, generally much reduced on mesoscutum ; hind leg 



relatively slenderer (Text-fig. 83) ......... 42 



42 Mesoscutum all dark metallic but scutellum extensively yellow except for narrow 



dark anterior margin extending along median line backwards (Text-fig. 77) ; 

 pronotum at most with posterior yellow band; S. Brazil to N. Argentina 



signifera sp. n. (p. 76) 



