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The larval stage of C. catalpae is known as the catalpa or catawba worm. When first hatching, the larvae are very pale, but become darker toward the last instars.The yellow caterpillars will usually have a dark, black stripe down their back along with black dots along their sides.
Hornet stings are more painful to humans than typical wasp stings because hornet venom contains a large amount (5%) of acetylcholine. [ 8 ] [ 9 ] Individual hornets can sting repeatedly. Unlike honey bees , hornets do not die after stinging because their stingers are very finely barbed (only visible under high magnification) and can easily be ...
A European hornet flew into the spider’s web and appeared entangled. The hornet cut free a captured insect (possibly a eumenine wasp), wrapped in silk, from the spider’s web. The spider did not attack or interfere with V. crabro while it was stealing its prey. [23]
The whole structure enables the insect to move the antenna as a whole by applying internal muscles connected to the scape. The pedicel is flexibly connected to the distal end of the scape and its movements in turn can be controlled by muscular connections between the scape and pedicel. The number of flagellomeres can vary greatly between insect ...
The butterflies form the clade Rhopalocera, which is composed of three superfamilies: Hedyloidea (the moth butterfly family Hedylidae), the Hesperioidea (the skipper family Hesperiidae), and the Papilionoidea (the true butterfly families Papilionidae, Pieridae, Nymphalidae, Lycaenidae, and Riodinidae). All of these families are monophyletic.
The European hornet is a wasp-waisted Apocritan with a sting, not a Symphytan. Many species of sawfly have retained their ancestral attributes throughout time, specifically their plant-eating habits, wing veins and the unmodified abdomen, where the first two segments appear like the succeeding segments. [ 30 ]
The common denominator among most deposits of fossil insects and terrestrial plants is the lake environment. Those insects that became preserved were either living in the fossil lake (autochthonous) or carried into it from surrounding habitats by winds, stream currents, or their own flight (allochthonous). Drowning and dying insects not eaten ...
A Dryas iulia butterfly drinking from the tears of a turtle. Some Orthoptera – e.g. the yellow-spined bamboo locust (Ceracris kiangsu) – are attracted to human urine, specifically to the sodium and ammonium ions in it. [15] Those Lepidoptera that are attracted to dung (e.g. Zeuxidia spp.) or carrion seem to prefer ammonium ions rather than ...