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A larva (/ ˈ l ɑːr v ə /; pl.: larvae / ˈ l ɑːr v iː /) is a distinct juvenile form many animals undergo before metamorphosis into their next life stage. Animals with indirect development such as insects , some arachnids , amphibians , or cnidarians typically have a larval phase of their life cycle .
After about five days, larvae enter the pupal stage. This is said to be an inactive stage, although many changes occur during this part of the flies’ lifecycle. The pupa does not feed, but rather uses the time inside the casing to change from a rice-like larva into an adult fly with wings and six legs.
Lepidoptera (/ ˌ l ɛ p ɪ ˈ d ɒ p t ər ə / LEP-ih-DOP-tər-ə) or lepidopterans is an order of winged insects which includes butterflies and moths.About 180,000 species of the Lepidoptera have been described, representing 10% of the total described species of living organisms, [1] [2] making it the second largest insect order (behind Coleoptera) with 126 families [3] and 46 superfamilies ...
The C-shaped larvae, called grubs, are pale yellow or white. Most adult beetles are nocturnal, although the flower chafers and many leaf chafers are active during the day. The grubs mostly live underground or under debris, so are not exposed to sunlight.
Butterfly larvae, or caterpillars, consume plant leaves and spend practically all of their time searching for and eating food. Although most caterpillars are herbivorous, a few species are predators : Spalgis epius eats scale insects , [ 48 ] while lycaenids such as Liphyra brassolis are myrmecophilous , eating ant larvae.
Nematoceran larvae generally have well-developed eyes and antennae, while those of Brachyceran larvae are reduced or modified. [ 67 ] Dipteran larvae have no jointed, "true legs", [ 64 ] but some dipteran larvae, such as species of Simuliidae , Tabanidae and Vermileonidae , have prolegs adapted to hold onto a substrate in flowing water, host ...
The larvae of craniids have no pedicle or shell. [16] As the shell becomes heavier, the juvenile sinks to the bottom and becomes a sessile adult. [9] The larvae of articulate species (Craniiformea and Rhynchonelliformea) are lecithotrophic (non-feeding) and live only on yolk, and remain among the plankton for only a few days. The ...
This is the location of growth and molting. The infective larvae penetrate the villi and continue to develop in the small intestine. The young worms move to the caecum and penetrate the mucosa, and there they complete development as adult worms in the large intestine. The life cycle from the time of ingestion of eggs to the development of ...