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Ammophila urnaria feeds on nectar and can often be seen on the flower heads of sorrel or onion. [2] The breeding season is in summer. The female wasp digs a succession of burrows in sandy soil, provisioning each burrow with one or more paralysed caterpillars, lays an egg on the first caterpillar in each and seals the hole.
The evolution of polyembryony and the potential evolutionary advantages that may entail have been studied. In parasitoid wasps, there are several hypotheses surrounding the evolutionary advantages of polyembryony, one of them being that it allows female wasps that are small in size to increase the number of potential offspring in comparison to wasps that are mono embryonic. [4]
However, if the first male who copulated with her mimics the female, it distracts the second male long enough that the female becomes unreceptive. [3] Cotesia rubecula parasitizes the cabbage worm caterpillar, generally in the stage of first instar, with the female wasp stinging and laying between 20 and 50 eggs within the host instar. The ...
In Polistes exclamans, equal sex ratio is obtained when only 46.3% of investment is devoted to females as female wasps are 1.16 times larger than male wasps. [16] In a study done by Strassmann, it was found that sexual investment is female biased, especially during years of high predation and when nests are generally less successful. [16]
Winged female and wingless male. Blastophaga psenes is a wasp species in the genus Blastophaga. It pollinates the common fig Ficus carica and the closely related Ficus palmata. [3] These wasps breed in figs without the need for a colony or nest, and the adults live for only a few days or weeks. [4]
Polistes biglumis bimaculatus. Polistes biglumis can reach a length of up to 16 mm (0.63 in) (queen), 14 mm (0.55 in) (workers), 15 mm (0.59 in) (males). It is a larger species of wasp in comparison to its relatives in Polistes.
Vespula squamosa, or the southern yellowjacket, is a social wasp.This species can be identified by its distinctive black and yellow patterning and orange queen. [1] This species is typically found in eastern North America, and its territory extends as far south as Central America. [1]
After mating, the female wasp seeks out a tarantula, either free-ranging or in its burrow. After grappling with the tarantula, the wasp delivers a powerful sting that paralyzes the tarantula, but keeps it alive. [2] This allows the wasp to lay an egg that adheres to the spider's abdomen. One egg is provisioned per tarantula.