REVISION OF LEUCOSPIDAE 37 



longer, reaching at least base of gaster; in g hind margin of fourth sternite slightly 

 emarginate, fifth sternite much more transverse and shorter than the sixth 



anthidioides Westwood (p. 59) 



19 Dorsellum raised in two tubercles; thorax dorsally black; pubescence extremely 



short; hind coxa in depression with extensive smooth area nearly or quite reaching 

 base of coxa (Text-fig. 54) ; ovipositor short, not reaching base of fifth tergite 

 (Text-fig. 55) pictipyga sp. n. (p. 54) 



- Dorsellum regularly convex; thorax at least with some yellow markings; pubescence 



longer; smooth area of hind coxa smaller; ovipositor reaching at least middle of 



first tergite ............ 20 



20 Hind margin of dorsellum with indication of carina; ovipositor reaching thorax 



(Text-figs 50, 51) ; propodeum medially shorter than dorsellum (§) ; body with rich 

 yellow pattern and mostly red instead of black; occipital carina not reaching 

 temples which are extremely short .... santarema Walker (p. 52) 



- Hind margin of dorsellum smooth, not subcarinate; ovipositor not reaching base of 



gaster, propodeum medially longer than dorsellum; body predominantly black, 

 only apical half of gaster sometimes more yellow; occipital carina sometimes 

 reaches temples . . . . . . . . . . . .21 



21 Occipital carina reaching distinctly behind eyes; gaster relatively slender (Text-fig. 



48), with narrow yellow cross-bands on first tergite basally, on fourth tergite, on 



the fifth posteriorly and on the sixth and epipygium . brasiliensis sp. n. (p. 50) 



- Occipital carina disappearing beyond ocelli; gaster broad (Text-fig. 49), anteriorly 



black, extensively yellow only from half of fifth tergite . klugii Westwood (p. 58) 



22 Hind coxa along middle of depression with dense puncturation and long hairs which 



converge conspicuously towards median line of depression (Text-fig. 58), also 

 dorsal edge with long pilosity; in $ first tergite with a smooth median crest rising 

 from submedian depression; pronotum only with posterior pale cross-line 



latifrons Schletterer (p. 61) 



- Depression (and dorsal edge) of hind coxa rather regularly punctured and clothed 



with short hairs which are directed uniformly caudad; in 9 first tergite mostly 

 otherwise, also pale pattern on pronotum mostly different .... 23 



23 Yellow on pronotum strongly expanding laterad but leaving median part anteriorly 



black (or reddish) (Text-fig. 59) ; propodeum posteriorly yellow; hind tibia basally 



in lateral view almost straight (Text-fig. 60); Cuba . poeyi Guerin-Meneville (p. 68) 



- Pale (yellow, white or red) markings on pronotum different: posterior band not 



expanding laterad and if connected with lateral streak, then another cross-band 

 present anteriorly; propodeum usually black; hind tibia arched in basal half 

 (Text-figs 57, 61, 63) .... 24 



24 First tergite in $ with smooth median crest delimited by very shallow submedian 



depressions (as in latifrons); hind femur densely punctured; pronotum only with 

 posterior yellow cross-line but apex of gaster (in $) predominantly yellow; Mexico 



azteca Cresson (p. 62) 



- First tergite in § with well delimited median ovipositorial furrow subdivided by low 



median ridge; hind femur mostly rather sparsely punctured (Text-fig. 61); prono- 

 tum usually with anterior band and mostly bordered with yellow, whitish or red 

 on sides; Canada to C. America ...... affinis Say (p. 63) 



25 Hind basitarsus dorsally much shorter than breadth of apex of hind tibia which is 



slightly obliquely truncate (Text-figs 87, 90) ; occipital carina interrupted or 

 obliterated sublaterally before reaching eye (Text-figs 88, 91) .... 26 



- Hind basitarsus dorsally at least as long as breadth of tibia (Text-fig. 83), the latter 



often otherwise than in alternate; occipital carina even laterally conspicuous, 

 although sometimes less distinct in sinuation between lateral ocellus and eye, but 

 again distinct on temples (Text-fig. 82) ....... 28 



26 Interocellar area strongly raised above the unusually small ocelli, median ocellus 



