A FURTHER NOTE ON FUNGUS ASSOCIATION IN THE SIRICIDAE

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Abstract
SUMMARY: 1. Earlier work on the association of Sirex cyaneus with a Basidiomycete fungus has been confirmed. The culture of the fungus closely resembles, but is not identical with that of Stereum sanguinolentum; it is therefore thought that it is a form of S. sanguinolentum.2. The fungus isolated from Sirex gigas has been identified as Stereum sanguinolentum.3. At the moisture content favourable for the development of the larvae, only slow development of the fungus can take place. Under more moist conditiona viporous fungus growth occurs, with apparently fatal results to the lam.4. The fungus is introduced into the wood during ovipition in the cam of both Sirez cyaneus and S. gigaa.5. Fungus was found to be present in glands at the base of the ovipositor in lete stage female pupae.6. A fungus, the culture of which resembles in appearance that of Daldinia con‐centriea, has been related from larval tunnels and from glands in adult females of Xiphydia prolongata.

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