THE LADY BEETLES. 



529 



d. Form broadly oval ; apical spot not extending over one-fifth the 

 length of suture. 



e. Apex of elytra dull yellow ; thorax sparsely and obsoletely 

 punctate throughout. (Fig. 196, c.) 1010. fraternus. 



ee. Apex of elytra reddish ; thorax distinctly and coarsely punc- 

 tate at middle, more finely and sparsely at sides. 



1011. CAUDALIS. 



dd. Form oblong-oval ; apical spot comprising nearly a third of the 

 upper area ; last three segments of abdomen yellow. 



1012. RUBRICAUDA. 



cc. Elytra narrowly pale at apex. 

 f. Thorax partly black. 

 g. Legs entirely reddish-yellow ; first ventral segment of male 

 without pubescence. (Fig. 196, a.) 1013. collaris. 



gg. Legs pale, the femora piceous ; first ventral segment of male 

 with a median smooth area surrounded by short pubescence. 



1014. PUXCTICOLLIS. 



ff. Thorax entirely yellow. 1015. cervicalis. 



bb. Elytra entirely black. 



Ji. Species larger, 2-2.5 mm.; thorax entirely black. 



1016. TEXEBROSUS. 



////. Smaller, not over 1.5 mm.; front angles of thorax usually pale. 



NANUS. 



tta. Form oblong; thorax narrower at base than base of elytra; elytra black, 

 each with a small oval red spot at center of disk. (Fig. 196, b.) 



PUXCTATUS. 



1010 (3145). Scymnus featernus Lee, Proc. Phil. Acad. Nat. ScL, VI, 



1S52. 138. 



Broadly oval. Piceous black ; head black or yellowish ; thorax reddish- 

 yellow at sides, with a central piceous spot which is variable in size ; elytra 

 with a yellowish area at apex which never extends along the suture more 

 than a fifth of its length. Abdomen piceous, paler at sides and apex ; legs 

 reddish-yellow. Thorax and elytra punctate but not closely nor densely. 

 Length 2-2.5 mm. (Fig. 196. c.) 



Our most common species ; found throughout the State. Hiber- 

 nates. January 6-Xovember 1. This species includes the form 

 generally listed as ha-morrhous Lee. the types showing, as stated by 

 Horn, "that they were established on uniques, the differences being 

 merely individual, fraternus having the greater extent of yellow on 

 the thorax. " * 



1011 (3149). Scymxus caudalis Lee. Agass. Lake Sup., 1S50, 23S. 

 Broadly oval. Black ; head, side margins of thorax, tibia? and tarsi 



and large, often somewhat indistinct spot on apex of elytra, dull reddish ; 

 femora piceous. Thorax but little more than twice as wide as long, sides 

 moderately convergent, evenly curved. Elytra quite coarsely and closely 

 but not densely punctate. First ventral segment of male with a large me- 

 dian area at apex glabrous and impunctate. Length 2-2.3 mm. 



*Trans. Amer. Entom. Soc, XXII, 101. 



