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Dormancy in Reduvius Personatus (Linnaeus).*

1931; Oxford University Press; Volume: 24; Issue: 1 Linguagem: Inglês

10.1093/aesa/24.1.19

1938-2901

P. A. Readio,

Fossil Insects in Amber

The subject of dormancy of Reduvius personatus (Linnaeus) first aroused the interest of the writer when, while rearing this species in connection with studies of the biology of the Reduviidæ, it was observed that this insect apparently ceased development during the winter months, even though kept in heated quarters and supplied with the same food which permitted its development at other seasons of the year. A survey of the literature showed that others had observed this phenomenon, but had not attempted to explain it. De Geer (1) stated that this species passed the winter as an engorged nymph, without taking food; that its body became thin and flat; and that at the return of warm weather it again became active and recommenced feeding. Also Poujade (2) recorded the fact that he kept a nymph which he collected in August, 1887, until it molted and became an adult in June, 1888, thus living for ten months without undergoing more than one molt, its final one. This insect remained torpid during the winter and took no food.