The Insects - Outline of Entomology 3th Edition - Chapter 11 ppsx
The Insects - Outline of Entomology 3th Edition - Chapter 11 ppsx
... Interpreting the early evolution
of the angiosperms is contentious, partly because of
the paucity of fossilized flowers prior to the period of
radiation, and also because of the apparent rapidity
of the ... native
range. The host-specificity of potential control agents
must be tested, either inside or outside the country of
introduction and, in the former case,...
The Insects - Outline of Entomology 3th Edition - Chapter 4 ppsx
... across. The field of
view of each ommatidium differs from that of its neigh-
bors and together the array of all ommatidia provides
the insect with a panoramic image of the world. Thus,
the actual ... insensitive to the wing tone
of males of their species. Neither can the male detect the
wing tone of immature females – the Johnson’s organ
in his antenna respond...
The Insects - Outline of Entomology 3th Edition - Chapter 13 ppsx
... species of insect
parasitoids seen above, there are remarkably few insect
parasites of other insects, or indeed, of other arthropods.
The largest group of endoparasitic insects using
other insects ... Chapter 11 we saw how the development of angio-
sperms and their colonization by specific plant-eating
insects explained a substantial diversification of phyto-
phagous...
The Insects - Outline of Entomology 3th Edition - Chapter 14 ppsx
... distasteful-
ness. The mimic gains both from the presence of the
protected model and the deception of the observer. As
the mimic’s presence disadvantages the model, interac-
tion with the model ... produces a build-up of pressure in the reac-
tion chamber, which closes the one-way valve from the
reservoir, thereby forcing discharge of the contents
through the...
The Insects - Outline of Entomology 3th Edition - Chapter 1 ppt
... numbers of
insects is the role of sexual selection in the diversifica-
tion of many insects. The propensity of insects to
become isolated in small populations (because of the
fine scale of their ... classification
and their roles in our economic and wider lives. First,
we outline the field of entomology and the role of ento-
mologists, and then introduce the...
The Insects - Outline of Entomology 3th Edition - Chapter 2 pot
... defensive and other com-
pounds are products of the epidermis, which is a near-
continuous, single-celled layer beneath the cuticle.
Many of these compounds are secreted to the outside
of the insect ...
a poison-injecting sting (Fig. 14 .11) and the eggs are
ejected at the base of the sting. In all other cases, the
eggs pass down a canal in the shaft of the ovip...
The Insects - Outline of Entomology 3th Edition - Chapter 3 potx
... by the plant. By comparison,
a macerate-and-flush strategy is typical of Heteroptera,
such as mirids and coreids. These insects disrupt the tis-
sues of plants or other insects by thrusting of the ... to be the primary
mechanism for the movement of gases in the tracheae
and is always the sole mode of gas exchange at the
tissues. The efficiency of diffusion is...
The Insects - Outline of Entomology 3th Edition - Chapter 5 pot
... transfer of sperm via the insertion of part of the
male’s aedeagus (edeagus), the penis, into the repro-
ductive tract of the female. In males of many species the
extrusion of the aedeagus during ... oviposition in insects.
5.1 BRINGING THE SEXES TOGETHER
Insects often are at their most conspicuous when syn-
chronizing the time and place for mating. The flas...
The Insects - Outline of Entomology 3th Edition - Chapter 6 pptx
... further discus-
sion of the actions of eclosion hormone). Apolysis at
the end of the fifth larval instar marks the beginning of
a prepupal period when the developing pupa is pharate
within the ... affects the eggs of the
next generation.
The ability of insects to recognize seasonal photo-
period and other environmental cues requires some
means of measuring tim...
The Insects - Outline of Entomology 3th Edition - Chapter 7 pdf
... as
wings held roof-like over the abdomen, fore wings
either membranous or in the form of tegmina of uni-
form texture, and with the rostrum arising ventrally
close to the anterior of the thorax, ... or
mistaken. The fore-wing-derived halteres of strep-
sipterans are gyroscopic organs of equilibrium with the
same functional role as the halteres of Diptera (although...