BAGWORM MOTHS OF THE WESTERN HEMISPHERE 51 



Key to the Species of Cryptothelea 



la. Primaries with scales of discal cell broadly oblanceolate (fig. 329) ; intercalary 

 cell frequently present. 

 2a. Eighth abdominal sternite of male with furcal arms distinctly longer than 

 undivided base (figs. 196, 197). 

 3a. Antennae (fig. 372) with pectinations long, sensory hairs 2 to 2.5x diam- 

 eter of pectinations; male genitalia as in fig. 251 . . . 9- C watsoni 

 3b. Antennae (fig. 371) with pectinations short, sensory hairs 1.5x diameter 



of pectinations; genitalia as in fig. 252 10. C macleayi 



2b. Eighth sternite with furcal arms slightly shorter than base (fig. 195). 



8. C. siirinamensis 

 lb. Primaries with scales of discal cell narrowly oblanceolate (fig. 327); inter- 

 calary cell never present. 

 4a. Antennal pectinations with sensory hairs somewhat appressed and not 

 exceeding diameter of pectinations in length (fig. 369) . 14. C. gloverii 

 4b. Antennal pectinations with sensory hairs erect and 1.5x or more diameter 

 of pectinations in length (fig. 368). 

 5a. Wing expanse 8-14 mm.; furcations of eighth sternite relatively stout, 

 approximately 3x length of undivided base (fig. 198). 



13. C. symmicta 

 5b. Wing expanse 16-19 mm.; furcations very slender, approximately 4x 

 length of undivided portion (fig. 201). 

 6a. Antennal pectinations (fig. 370) short as in gloverii; larvae apparently 



gregarious 12. C. congregata 



6b. Antennal pectinations (fig. 368) longer than in congregata; larvae not 

 gregarious 11« C. nigrita 



8. Cryptothelea siirinamensis (Miischler) 



Figures 8, 70, 195, 250, 325; Map 9 



Psyche surinamensis Moschler, Verh. Zool.-Bot. Gesellsch. Wien., vol. 27, p. 669, 



1878. 

 Eunieta siirinamensis (Moschler) Kirby, Cat. Lep. Heter., vol. 1, p. 504, 1892. 

 Cryptothelea siirinamensis (Moschler) Dalla Torre and Strand, Lep. Cat., pars 34, 



p. 190, 1929. 

 Clania surinamensis (Moschler) Gaede in Seitz, Macrolep. World, vol. 6, p. 1183, 



1936. 



Male.— (Fig. 8.) Antennae quite variable in number of segments, 

 13-33; sensory hairs erect, evenly spaced in definite rows, approxi- 

 mately 1-1. 5x diameter of pectinations in length. 



Wings and body fuscous. Primaries with apex more acute than in 

 C. gloverii; scales (fig. 325) of discal cell broad, oblanceolate as in 

 C. watsoni; R5 usually connate with R3+4, may be stalked with 

 latter for some distance; M usually branched within cell of both wings, 

 rarely simple. Secondaries with faint basal cross vein sometimes 

 present between Sc+Ri and Rs. Wing expanse 18-26 mm. 



Male genitalia. — (Fig. 250.) Similar in form to other species of 

 genus except usually much larger. Eighth sternite (fig. 195) robust 

 with furcal arms relatively short and stout. 



