118 



Pamela S. Dolin and Donald C. Tarter 



^^H 



Pupae 



Larval 

 Head 

 Width 

 (mm) 



5 - 

 Larval 4 - 

 3 - 

 2 _ 

 1 - 



Width 

 (mm) 



Adults 



. Pupae 



January 



I I 



O November 



Fig. 5. Summary graph of life cycles of Chauliodes rastricornis (bottom), and C. 

 pectinicornis (top), from Greenbottom Swamp, Cabell County, West Virginia. 

 Larval head width means are plotted against months of the year. Straight lines = 

 emergence periods of pupae and adults. 



December in Florida, and specimens of C. rastricornis in West Virginia 

 were only found on 2 June (Tarter et al. 1977). 



The C. rastricornis pupae reared in our laboratory transformed 

 into adults between 29 April and 13 May, and the C. pectinicornis 

 emerged between 10 July and 27 August. This separation of emergence 

 times helps keep these two species from interbreeding. No mating, ovip- 

 ositing, eating, or drinking was observed. 



Brimley (1908) reported rearing larval Chauliodes caught on 4 

 April 1906 to adults, which first emerged 21 April and continued trans- 

 forming until 20 May 1906. Parfin (1952) recorded rearing C. rastricor- 

 nis, which first emerged on 5 June and lived approximately six days on 

 honey and water. 



The sex ratio of 77 C. rastricornis captured by the light traps was 5 

 males: 1 female, and a chi-square test indicated a significant difference 

 (0.05 level). Since all five C. pectinicornis trapped were males, a chi- 

 square value was not calculated. 



Adult C. rastricornis, reared from pupae, showed a fecundity range 

 of 922 to 1612 eggs (x = 1 166) per female, but light-trapped females of 

 the same species contained between 8 and 637 eggs (x = 388). Chauliodes 



