THE SOFT-WINGED FLOWER BEETLES. 



841 



bl). Antennae distinctly 11-jointed. 



c. Front tarsi simple, joint two not prolonged. 



cl. Elytra similar in both sexes. II. Anthocomus. 



dd. Elytra of male prolonged at tip and bearing a hook-like append- 

 age. III. PSEUDEBJEUS. 



cc. Front tarsi of male with second joint prolonged over the third 

 (Fig. 328) ; elytra similar in both sexes. IV. Attalus. 



aa. Sides of body without vesicles ; angles of thorax not fissured beneath ; 

 first joint of tarsi shorter than second ; claws without appendages ; 

 edge of thorax and elytra serrate. V. Alymeris. 



I. Collops Erichs. 1840. (L., " embrace + eye or face.") 



To this genus belong our largest members of the family, yet none 

 of them exceed 7 mm. in length. The antenna? are apparently 10- 

 jointed (the true second joint being very small and concealed) ; 

 second joint (really the third) of male much enlarged and -bearing 

 near the base a curious slender articulated appendage furnished at 

 the tip with a brush of stiff, curved hairs. This extends forward 

 and is usually concealed in a deep cavity on the upper surface of 

 the joint. It is supposed to be used in clasping the antennae of the 

 female during mating. 



1604 (.4994). Collops tricolor Say, Journ. Phil. Acad. Nat. ScL, III, 1823, 



182 ; ibid. I, 107. pi. 48. 

 Oblong-oval, broadest behind the middle. Head, legs and under surface, 

 except abdomen, black; palpi, thorax, abdomen and basal third of antennae, 

 reddish-yellow ; elytra blue or bluish-black. Thorax much wider than long, 

 nearly oval, sides broadly rounded ; surface, as well as that of elytra, 

 sparsely clothed with black, erect hairs. Elytra densely punctured. Length 

 4-5 mm. 



Lake and Marshall counties; rare. June 28-August 27. The 

 figures of pi. 48, LeConte's edition of Say, are wrongly named, Fig. 

 3 being this species. 



1605 (5004). Collops quadrimacuiatus Fabr.. Ent. Syst. 



Suppl., 1798, 70. 

 Oblong-oval, widest behind. Head, abdomen and femora 

 black ; thorax and elytra reddish-yellow, the latter each with 

 a large basal and anteapical spot blue or bluish-black ; tibiae, 

 tarsi and apical portion of antennae dusky or piceous. Other- 

 wise as in tricolor . Length 4—6 mm. (Fig. 327.) 



Throughout the State ; frequent! May 30-Septem- 

 ber 8. Taken by sweeping and beating grasses and 

 foliage in damp localities. 



Fig. 327. 

 (After Glover.) 



