REVISION OF LEUCOSPIDAE 103 



(Text-fig. 127); pronotal sides subparallel (Text-fig. 129); ovipositor not quite 

 reaching first tergite, furrow developed only on fourth and fifth tergites ; Rhodesia 



fallax sp. n. (p. no) 



10 Hind femur with strong basal tooth (Text-fig. 130) and externally with very coarse 



puncturation; white pubescence on face very dense; yellow markings mostly 

 extensive, usually pronotal band extending to premarginal carina, most of 

 scutellum yellow, also hind femur and first tergite in§ extensively yellow; Sudan, 

 Egypt ......... elegans Klug (p. 114) 



- Hind femur with basal tooth at most about as high as slender middle teeth, often 



smaller; femur externally often otherwise; pubescence on face usually not very 

 dense; yellow markings much less extensive; usually more southerly species . n 



1 1 In both sexes middle teeth of broad hind femur the longest, basal tooth oblique and 



at most as long as the second (Text-fig. 135); ovipositor not quite reaching base 

 of fifth tergite which is medially distinctly longer than the first and gradually 

 sloping caudad; ovipositorial furrow not developed on fourth tergite 



carinifera Kriechbaumer (p. 119) 



- Basal tooth of hind femur broader, subtriangular, larger than the second, although 



often not longer than middle teeth; ovipositor sometimes exceeding base of fifth 

 tergite towards head, this tergite dorsally often subhorizontal, never much longer 

 than the first, with puncturation generally coarser, pilosity less dense and more 

 uniform than in alternate; fourth tergite with ovipositorial furrow which often is 

 present also on first tergite (ornata) . . . . . . . . 12 



12 In $ first tergite with well-defined deep ovipositorial furrow, smooth on bottom, 



nearly reaching basal fovea; sheaths in normal position reaching about middle of 

 first tergite; in £ gastral carapace usually with one cross-band before and another 

 behind broadest part, and with transverse apical macula which only rarely tends 

 to expand forwards at sides; puncturation of hind femur of varying density but 

 usually not very coarse though rather deep . . . ornata Westwood (p. 116) 



- In $ first tergite without ovipositorial furrow, although sometimes with a shallow 



median depression posteriorly; sheaths of varying length but generally shorter 

 than in alternate; in £ gastral carapace with arched band just behind broadest 

 place and another transverse macula along apical margin usually expanded 

 forwards at sides; punctures on hind femur usually very coarse and in general 

 sparser than in alternate .......... 13 



13 Ovipositor reaching base of fourth tergite, its furrow narrow and rather deep 



throughout; hind femur relatively slender (Text-fig. 138) varicollis Cameron (p. 120) 



- Ovipositor shorter, hardly reaching basal third of fifth tergite, its furrow broad on 



the fifth and narrow, groove-like on fourth tergite; hind femur rather broad (Text- 

 fig. 142) ......... ostniae sp. n. (p. 121) 



14 Hind femur beneath with large triangular basal tooth followed by many smaller teeth 



(Text-figs 163, 167) . . . . . . . . . . 15 



- Hind femur with basal tooth slender, oblique and shorter than long middle teeth 



(Text-figs 147, 161) ........... 17 



15 North African and European; dorsellum bidentate, coarsely sculptured; hind 



femur unusually flat, very densely punctured as well as hind coxa which has 

 dorsal edge sharp but without tooth (Text-fig. 172); gaster broad basally; in § 

 hind margin of fourth tergite broadly emarginate . . biguetina Jurine (p. 147) 



- South African or Madagascan; dorsellum unarmed; hind femur not unusually flat, 



puncturation not extremely dense and on hind coxa leaving some streaks 

 impunctate; gaster very narrow at base, hind margin of fourth tergite in 9 other- 

 wise .............. 16 



16 Dorsellum nearly smooth, yellow, its margin swollen and not carinate; scutellum 



and mesoscutum without yellow; in $ ovipositor reaching thorax (Text-fig. 162), 

 long first tergite with two diverging ovipositorial furrows separated by smooth 



