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smoothened. L. 5-6 mm 10. St. clavlcornls Scop. 



Pronotum at middle-line posteriorly distinctly grooved. Body more 

 or less glistening. Abdominal ventral side in the O at middle 

 with dense and long grayish-yellow hair, in middle-line especial- 

 ly of the middle- and hindmost joints strongly smoothed. L. 5 

 mm 11. St. provldus Er. and v. Pogeri Kr. 



18. The impression in the u on the abdominal fifth ventral joint very 



smooth witn a short carina in the middle-line, at tip obtuse- 

 angularly incised. Ventral side of abdomen at middle with long 

 jrayish-yellow hair. Legs in both sexes brownish with predomi- 

 nantly reddish-yellow femora. L. 5 mm 12. St. lustrator Sr. 



The impression on the fifth ventral joint of O without carina in 

 middle-line, at tip with rounded emargination. Legs in both 

 sexes pitch-colored, only the inner half of the femora are red 

 or yellowish-red 19. 



19. Elytra 1/J times as long as pronotum. L. 4.5 mm. :13. St. scrutator Sr. 

 Elytra not or only insignificantly longer than pronotum 20. 



20. Head not broader than elytra; these much broader than pronotum. 



Grooves of forehead feeble. L. 4 mm. : 14. St. sylvester Sr. and 



excubitor Sr. 



Head almost broader than elytra; these a very little broader than 



pronotum. Grooves of forehead deep. L. 3-3.5 mm. :15. St. prod it or Er. 



21. Legs reddish-yellow with pitch-brown femoral tip. Body with whitish 



yellow glistening hair. L. 5 mm 16. St. fossulatus Er. 



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