SOME WINTER INSECTS.

The Mechanism of Flight Preparation in Some Insects*

IN 1928 Dotterweich published under the title " Beitrage zur Nervenphysiologie der Insekten" some very interesting and important observations and measurements mainly on Sphingidae, showing that the rapid vibration of the wings regularly observed in large moths before they take flight produces an increase in temperature of the wing muscles which is necessary to enable them to fly at all. The tem...

Molecular Cytogenetic Study of Heterochromatin in Some Coleopteran Insects

Heterochromatin characteristics have been studied in Leptinotarsa decemlineata belonging to the leaf beetles (Chrysomelidae) and compared to the thoroughly analysed heterochromatin of the mealworm beetle Tenebrio molitor, representing darkling beetles (Tenebrionidae). C-banding reveals heterochromatin in pericentromeric regions of all chromosomes of both species; however heterochromatic blocks ...

Rf and Microwave Permittivities of Insects and Some Applications

Abtract: Interests in the permittivities of insects include data for radar applications in studying insect migration and for use in studies of dielectric heating for control of insects infesting cereal grains, wood products, and other materials. Sources of such data in the literature are identified, measurement data are presented, and dielectric properties data on insects are summarized in tabu...

Transpiration through the Cuticles of Some Aquatic Insects

Do Insects Have Emotions? Some Insights from Bumble Bees

While our conceptual understanding of emotions is largely based on human subjective experiences, research in comparative cognition has shown growing interest in the existence and identification of "emotion-like" states in non-human animals. There is still ongoing debate about the nature of emotions in animals (especially invertebrates), and certainly their existence and the existence of certain...