524 PAMtljY XVI. — COCCINEIjLID.E. 



Tribe VI. SCYMMXI. 



This tribe embraces a largij number of small species readily 

 recognized by the distinct pube--f('ence of the upper surface. The 

 genus Smilia. though composed of apparently glabrous forms, is 

 combined ^^'ith the other genera on account of a similarity in struc- 

 ture. In all our' forms the antennse are scarcely as long as the 

 head, thorax deeply emarginate in front and rounded behind ; front 

 and middle legs more or less contractile, with the thighs sulcate be- 

 neath for the reception of the tibi;e. Casey separates the tribe into 

 six genera, four of which are represented in Indiana. 



KEY TO INDIANA QENEHA OF SCYMNINI. 



i(. Thorax not deeply emarginate; antennae ajjparently ll-jointed, free; 

 front coxiB moderately separated. 

 6. Thorax with a Hne, obliquely impressed line behind the front angles; 

 body apparently glabrous, yet finely pubescent under high power; 

 tarsal claws simi^le. XA'. Siiiilia. 



Jjh. Thorax without an oblique line near the front angles; body always 

 distinctly pubeiscent ; tarsal claws bifid. 

 c. Clypeus prolonged for a considerable distance before the eyes, the 

 sides converging ; antenna; inserted in small shallow eniargina- 

 tions just before the e.ves ; prosternura flat, not at all defiexed 

 toward the tip, generally bicarinate. XVI. Scyiinls. 



cc. Clypeus extremely short before the eyes, truncate with rounded 

 angles, the antenna' inserted under its sides adjoining the eyes ; 

 prosternum transversely convex, not carinate, broadly and grad- 

 ually deflexed, forming a protection to the mouth in repose. 



XVII. Stethoeus. 

 (Id. Thorax very short and broad and deeply emarginate in front ; antennre 

 apparently 0-jointed; front coxw very widely separated. 



XVIII. Gephaloscvmms. 



XV SinijA Weise. 1801. 



Here belong very small rounded species formerly classed under 

 the genus Pcntiliii. Of the six listed from the United States, one is 

 known from Indiana. 



1(I0.'{ (:!0!)()). Smilta MiSEi.i.A Lee., I'roc. Amer. Phil. Soc, XVII, ISTS, -1(»(», 

 Oval, eouvex. Uniform l)lack, shining. Thorax nearly smooth, the 

 impressed line near the front angles line and indistinet. Elytra rather 

 coarsely, sparsely and somewhat unevenly punctate. Length .8-1 mm. (Fig. 

 193.) 



Thnint;'hout the State; frociueiit. .\pril 13-:\lny 20. Occurs 

 c,s].ccially on fruit trees infested with San Jose scale and one of the 

 most beneficial beetles preying upon that injurious insect. 



