Pg. Milonas et M. Savopoulou-soultani, Temperature dependent development of the parasitoid Colpoclypeus florus (Hymenoptera : Eulophidae) in the laboratory, J ECON ENT, 93(6), 2000, pp. 1627-1632
Development, fecundity, and longevity of Colpoclypeus florus (Walker), a pa
rasitoid of Adoxophyes orana (Fischer von Roslerstamm) (Lepidoptera: Tortri
cidae), were studied under laboratory conditions at different constant temp
eratures. Developmental time from egg to adult was inversely related to tem
perature and at 25 degreesC was 12.81 +/- 0.19 d. No adults emerged at 30 d
egreesC. The thermal units required for development from egg to adult were
232.56 +/- 19.5 degree-days. Female C. florus oviposited (mean +/- SEM) on
average 30.7, 57.4, 46.6, and 34.1 eggs at 15, 17, 20, and 25 degreesC, res
pectively. Adult longevity was 11 +/- 1.25 d at 17, whereas it decreased to
4.5 +/- 0.4 at 25 degreesC. Honey significantly increased longevity for bo
th males and females. The highest net reproductive rate was 30.739 at 17 de
greesC, whereas the highest intrinsic rate of increase and the shortest dou
bling time occurred at 25 degreesC.