-58- 



were recovered for laboratory colony stock. Six hundred and one 

 females were dissected post mortem and examined for retention of eggs, 

 condition of accessory glands and natural parasite infections. 



Table 2-3 summarizes fecundity for 360 wild-caught females (263 

 from the first trip and 97 from the second). Regardless of efforts to 

 perform dissections within 24 hrs after death, many flies were in such 

 poor condition that dissection provided little usable information. 

 These and 54 females that died from overheating in a locked car in 

 June 1982 were excluded from the table. The mean number of eggs 

 deposited and the gross number of eggs produced (the number deposited 

 plus the number retained) remained fairly constant from one year to 

 the next. From 31 to 37% of the females retained some or all of their 

 eggs. Females neither depositing nor retaining eggs (in other words 

 maturing none) ranged from 3% in June 1982 to 10% in September 1983. 

 No evidence of autogenous behavior was observed. Females that were 

 denied a blood meal neither laid nor developed mature eggs. 



Significant differences were noted between year groups in 

 preoviposition interval, postcapture longevity and postoviposition 

 longevity, all three being longer for flies captured in the fall 

 (Table 2-4). A smaller percentage of females survived oviposition in 

 the fal 1 than in the spring. 



Accessory Glands and Parity 



Sixty-four wild-caught female Lu. diabol ica , which had not been 

 offered a blood meal, were dissected to study the paired accessory 

 glands (Fig. 2-19). The glands of only 36 flies were clearly seen. 

 Of these 36, only three showed evidence of having had a blood meal; 



