BIONOMICAL ASPECTS OF THE SQUAMATOIDES TR IVITTATUS (DIPTERA, SARCOPHAGIDAE) UNDER LABORATORY CONDITIONS

Experiments with Squamatoides trivitattus were carried out in two diff erent controlled temperatures (16+/-1 degrees C/50-60% RH and 27+/-1 d egrees C/70-80% RH). The viability of larvae and pupae at 27 degrees C was 89.82% and 92.75% respectively. Larvae did not develop at 16 degr ees C. Larval development lasted for 20+/-4 hr, 16+/-8 hr and 60+/-7 h r for the first, second and third instars, respectively, completing a fetal of 9+/-6 hr. The mean pupal period lasted for 15.7+/-1.6 days. I n longevity tables for the adults, life-expectancy for 50% of the colo ny submitted to 16 degrees C was of 1.78 weeks for males and 2.42 for females. At 27 degrees C a life-expectancy of 1.15 weeks for males and 0.78 week for females was recorded. The average life-spans for males and females at 16 degrees C were 3.5+/-2.0 and 3.8+/-2.6 weeks, respec tively, and 1.9+/-1.2 weeks for both sexes. At 27 degrees C, the longe vity recorded was of 2.1+/-1.3 weeks for males and 1.7+/-1.1 week for females.