Titlebook: Entomology; Cedric Gillott Book 1980 Springer Science+Business Media New York 1980 development.ecology.entomology.evolution.insect.insects

Gudgeon

The Orthopteroid Ordersthoptera, and Zoraptera. Members of these orders can be distinguished from other exopterygotes [the hemipteroid orders (Chapter 8)] by the following features: generalized biting mouthparts, wing venation usually well developed with numerous crossveins (though less netlike than that of Paleoptera), c

危機(jī)

The Hemipteroid Ordersecialized, usually suctorial, mouthparts; small anal lobe in hind wing; wing venation reduced; cerci absent; few Malpighian tubules; and ventral nerve cord with few discrete ganglia. On the whole, the hemipteroid group is more homogeneous than the orthopteroid group, although two evolutionary lines

REP

牙齒

暫時(shí)中止

LAIR

Nervous and Chemical Integrationally and thus to develop and reproduce at the maximum rate. The adjustments they make may be immediate and obvious, for example, flight from predators, or longer-term, for example, entry into diapause to avoid impending adverse conditions. The nature of the response depends, obviously, on the nature

transient-pain

Muscles and Locomotionvoidance of unsuitable conditions. Insects, largely through their ability to fly when adult, are among the most mobile and widely distributed of animals. Development of this ability early in the evolution of the class has made the Insecta the most diverse and successful animal group (see Chapter 2).

Biomarker

Exposition

音的強(qiáng)弱

The Circulatory Systemork of conducting vessels as, for example, in vertebrates, but flows freely among the body organs. An open system results from the development, in evolution, of a hemocoel rather than a true coelom. A consequence of the open system is that insects have only one extracellular fluid, hemolymph, in con