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The sting is connected with the mycetangia, which are special organs on the abdomen, where the female stores the oidiae (asexual fungus spores), from broken segments of hyphae.These spores are deposited, together with the eggs, in the host tree wood to germinate.
At the same time, she inserts spores of Amylostereum areolatum and a phytotoxic secretion.
The holes branch out into several tubes, which lead away radially.
The females are iron blue, and have orange legs and black antennae.
This is a notable distinction from Sirex juvencus, which has red antennae. The ovipositor is below the tapering tip of the abdomen.
While invasion was prevented in North America for a long time, the Sirex woodwasp established itself in New Zealand around 1900.
There, it contributed to massive pine declines in the first half of the 20th century, spreading to Tasmania in the 1950s and then to the Australian mainland.
Both larvae and adults have strong mandibles and can drill through lead plates.
The larvae of the Sirex woodwasp are almost colourless and only have three stub-shaped pairs of sterna.
The wasp can attack a wide variety of pine species, although some species seem to be more susceptible than others, and stressed trees often are attacked.
During oviposition, the female wasp lays two eggs with or without a mucoid substance and a symbiotic fungus for the larvae to feed on once they hatch.
Both sexes have long, black, bristle-shaped antennae, which are rather close together.Tags: Adult Dating, affair dating, sex dating