ART. 5 GENERIC EEVISION OF THE FOSSORIAL WASPS PARKER 63^ 



94. Sternites 2-5 with lateral spots variabilis. 



Sternites 2-5 entirely black atrifrons. 



95. Base of clypeus strongly carinate; apex of sixth tergite rounded. 



liberiensis. 

 Base of clypeus not strongly carinate; apex of sixth tergite truncate. 



infumata. 



96. Wings, except apical portion, clouded; abdomen almost devoid of macu- 



lations tenebrosa. 



Wings clear; abdomen with evident maculations 97. 



97. Pubescence on head and thorax, especially on the sides, unusually long 



and hoary; middle tibial spur reaching to or beyond the middle point 



of the metatarsus 98. 



Pubescence normal ; middle tibial spur not reaching to middle point of 

 the metatarsus 99. 



98. Sixth tergite maculated connexa. 



Sixth tergite black amoena. 



99. Fasciae on tergites sinuate but not greatly attenuated medially ; body 



comparatively slender 100. 



Fasciae on tergites wide laterally, attenuated medially or reduced to 



lateral spots ; body relatively robust 101. 



JOG. Fascia on second tergite imperfectly inclosing pair of discal spots ; third 



and fourth with pair of anterior emarginations ; fasciae yellow. 

 <•' muscicapa. 



■^ Fascia on second tergite like those on third and fourth ; fasciae on tergites 



white spinolae. 



101. Eyes not widely separated, inner margins plainly divergent at the clypeus ; 



lateral spots on sternites connected by apical lines beutenmulleri. 



Eyes widely separated, inner margins not divergent at the clypeus ; lateral 

 spots on sternites not connected by apical lines 102. 



102. Abdominal markings creamy v/hita; tibiae heavily marked with black; 



length about 16 mm : cinerea. 



Abdominal markings yellow ; tibiae yellow ; 18-20 mm hinei. 



103. Basal half of wings heavily clouded 104. 



Basal half of wings not heavily clouded 105. 



104. Scutellum with pair of lateral spots; sixth tergite black nubilosa. 



Scutellum black ; sixth tergite maculated fuscipennis. 



105. Clypeus with black basal border or a pair of basal black spots; usually 



discal spots on second tergite 106". 



Clypeus not marked basally with black 108. 



106. Sides of thorax and propodeum conspicuously maculated ; length greater 



than 20 mm luzonensis. 



Sides of thorax and propodeum black or sparingly maculated ; length less 

 than 20 mm 107. 



107. Fascia on first tergite interrupted texana. 



Fascia on first tergite continuous flavescens. 



108. Sides of mesothorax or propodeum or both with evident maculations__109. 

 Sides of mesothorax and propodeum black (rarely with inconspicuous 



maculation on mesothorax) 112 



I 109. Large and robust, 17-20 mm. ; fascia on second tergite more or less com- 

 pletely inclosing pair of black spots connexa. 



Smaller, 15 mm. or less ; fascia on second tergite lacking black spots__110. 



