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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 .
A cyphonautes is a larva of an ectoproct or bryozoan. It is triangular in profile with a heavily ciliated band called the corona at the base of the triangle and a sense organ at the apex (cypho-, bent; nautes, sailor). The beating of coronal cilia propels the cyphonautes through the water and contributes to a feeding current.
A phyllosoma larva of the spiny lobster Palinurus elephas, from Ernst Haeckel's Kunstformen der Natur. The larvae of the Achelata (slipper lobsters, spiny lobsters and furry lobsters) are unlike any other crustacean larvae. The larvae are known as phyllosoma, after the genus Phyllosoma erected by William Elford Leach in 1817. They are flattened ...
Only for few species the larval biology is known. Orussidae are parasitoids of xylobiontic larvae of beetles or Hymenoptera, particularly of the larvae of jewel beetles (Buprestidae), long-horned beetles (Cerambycidae), and wood wasps (Siricidae, Xiphydriidae). [6] [7] Orussids can be observed running around quickly on dead tree trunks. The ...
The phyllosoma larva of spiny lobsters has a long planktonic life before metamorphosing into the puerulus stage, which is the transitional stage from planktonic to a benthic existence. [ 3 ] [ 4 ] Despite the importance of larval survival to predict recruitment, not much is known about the biology of phyllosoma larvae. [ 5 ]
The genus Crambus includes around 155 species of moths in the family Crambidae, distributed globally.The adult stages are called crambid snout moths (a name shared with the rest of the family Crambidae, to distinguish them from Pyralidae snout moths), while the larvae of Crambus and the related genus Herpetogramma are the sod webworms, [2] which can damage grasses.
Hydnorobius larvae are recorded from flowers and fruits of Prosopanche (Hydnoraceae). P. americana is host to H. hydnorae and H. helleri; H. parvulus is found on P. bonacinae. [1] Balanophoraceae and Hydnoraceae are root parasitic rather primitive dicots but not closely related. Possibly, the Oxycorynini which feed on them shifted to these ...
Then comes the fact that insect (larva and nymph) gills are actually a part of a modified, closed trachea system specially adapted for water, called tracheal gills. The arthropod trachea can only arise in an atmosphere and as a consequence of the adaptations of living on land. This too indicates that insects are descended from a terrestrial ...