^ i-l 



THE GENUS CALOSOMA. 17 



O^ the species described by Mr. H. C. Fall ^ in 1910, namely, 

 eremicola, 'parvicoUis, and tristoides, the writers have seen a repre- 

 sentative of tiie last only, which is mentioned above. The other two 

 could not be added to the table for separating the species, as the 

 characters of the male iarsi are not given in the description. 



TABLE FOR DETERMINING ADULTS OF CALOSOMA. 



Anterior tarsi of male -n-ith joints 1-4 haiiy beneath. 



Thorax with sides broadly flattened behind; body elongate, black. 



Elytra deeply striate, with blue border 1 . externum. 



Elytra smooth, with a few punctures on the basal half 2. maa'um. 



Elytra with series of fine punctures 3. protractum. 



Thorax narrowed behind, sides not flattened; elytra deeply striate. 



Elj'tra gold-green with red margin. . 



Larger; middle tibise of male curved and with a dense brush of hairs ,y^ ^^ 



on the inner surface near the tip 4. sa'utator. y' ifT 



Smaller; middle tibise of male straight, not hairy 5. wilcoxi. '■' 



Elytra black to sHghtly bronze, with three rows of small greenish-bronze 



punctures 6. frigidum. . ' -^ '- 



Elytra coppery to greenish-bronze, with coppery -green margins; punctures 

 same shade as elytra. 



( Em-ope, introduced into Massachusetts) 7. inquisitor. O 



Anterior tarsi of male with joints 1-2 only hairy beneath. 



Thorax trisinuate behind, elytra deeply striate with three rows of golden .^ / -^ 



fovefe 8. sayi. ^ ^*- 



Anterior tarsi of male with joints 1-3 hairy beneath. 



Green species with underside of body bluish-black or greenish-black; elytral 

 spots faint and same color as elytra. • 

 Elytra deeply and regularly striate. - 



( Introduced and established in New England) 9. sycophanta. '-^ /-^ \L 



Elytra reticulate, granular. 



(Europe, introduced into Massachusetts) 10. reticulatum. 



I51ack species without golden spots (faint bluish-green spots in obsoletum) ; striae 

 of elytra faint and obliterated behind (except in angulatum). 

 Elytra naiTo:\]y margined: 



Side margin of thorax meeting the base in a well-defined angle (except 

 in parvirep-s). 

 Head coarKcly punctured, thorax strongly angulated at the sides. 



Elytra deeply striate from base to apex 11. angulatum. 



Elytra faintly striate from base to apex 12. peregrinator. 



Elytra faintly striate on basal half, becoming obliterated to- 

 wards apex. 



Thorax strongly angled at sides 13. prominens. 



Thorax arcuate at sides 14. parviceps. 



Head with a few coarse punctures in front. 



Elytra with coarse transverse punctures near base . . 15 . lugubrc. 

 Head smooth: thorax narrowly margined. 



Elytranearlysmooth, oval; wings feebly developed. 10. palmeri. 

 Side margin of thorax meeting the base in a curve. 

 Thorax slightly bi-'iinuate behind. 



fJasal impresfions slight; elytra nearly smooth 17. triste. 



Baflal impressions broad; elytra -with scaly sculpture. 



] 8. obsoletum. 

 Thorax emarginate behind, hind angles broad, prolonged. 



Without luHtor; transverse basal grooves of elytra as prominent 



as longitudinal striae 19. scmilaeve. 



Without luster; transverse basal grooves of elytra not as promi- 



inent as longitud inal strife 20. sim,plex. 



Elytra nmoolh, more broadly margirKid, oval; wings wanting (form robust, 



n<;arly as in triste) ; 21. haydeni. 



Elytra smooth, more broadly margined, oblong-oval; wings well developed 

 (form robiiHt and poHterior angles of thorax not as broadly redexed as 

 in Iriste) 22, tristoides. 



' Tall, II. ('. MiHC«llanw)Us notw.s an'l <lc!Sf;rlptions of Nortli Amoricun Colooptora. In Trans. Amer. 

 Km. Soc., V. 3<i, pp. H'.hi<J7 (pp. W 92;, 1910. 



54880"— i'.iill. 417—17 2 



