 Amylostereaceae usually infest only dead or cut down conifer wood . Three species – A. areolatum , A. laevigatum and A. chailletii – may also establish a symbiosis with wood wasps ( Siricidae ) , which beside freshly logged trees also infest living trees and infect them with fungi . Symbioses have been recorded with several species : Sirex noctilio , S. juvencus , S. nitobei , S. cyaneus , S. edwarsii , S. nitidus , and , in Japan , Urocerus antennatus and Xoanon matsumurae . Wasps of the genera Sirex and Urocerus store oidia ( the hypha of fungi split up to spores ) in special abdominal organs . The wood wasps infect trees by splashing a phytotoxic secretion below the bark and at the same time injecting fungal spores into the hole . The secretion weakens the tree and temporarily diminishes its immune system , whereby the fungus can spread along the xylem . The infection with Amylostereaceae fulfill two functions for the wasps : it provides the larvae food , because the white rot softens the wood ; at the same time , the mycelia of the fungi serves as food for the larvae . After the larvae pupate , it absorbs the mycelia of the Amylostereaceae into its body to oviposit together with its eggs . The fungus benefits from the symbiosis as it spreads faster and more effectively than through airborne spores and furthermore does not need to develop fruit bodies . A. ferreum is the only Amylosterum species that has not been associated with any woodwasps . 
 Amylostereaceae usually infest only dead or cut down conifer wood . Three species – A. areolatum , A. laevigatum and A. chailletii – may also establish a symbiosis with wood wasps ( Siricidae ) , which beside freshly logged trees also infest living trees and infect them with fungi . Symbioses <a href='been_done' title='1'><mark>have</mark></a> been recorded with several species : Sirex noctilio , S. juvencus , S. nitobei , S. cyaneus , S. edwarsii , S. nitidus , and , in Japan , Urocerus antennatus and Xoanon matsumurae . Wasps of the genera Sirex and Urocerus store oidia ( the hypha of fungi split up to spores ) in special abdominal organs . The wood wasps infect trees by splashing a phytotoxic secretion below the bark and at the same time injecting fungal spores into the hole . The secretion <a href='uninflect' title='2'><mark>weakens</mark></a> the tree and temporarily <a href='uninflect' title='3'><mark>diminishes</mark></a> its immune system , whereby the fungus can spread along the xylem . The infection with Amylostereaceae fulfill two functions for the wasps : it <a href='uninflect' title='4'><mark>provides</mark></a> the larvae food , because the white rot <a href='uninflect' title='5'><mark>softens</mark></a> the wood ; at the same time , the mycelia of the fungi <a href='uninflect' title='6'><mark>serves</mark></a> as food for the larvae . After the larvae pupate , it <a href='uninflect' title='7'><mark>absorbs</mark></a> the mycelia of the Amylostereaceae into its body to oviposit together with its eggs . The fungus benefits from the symbiosis as it <a href='uninflect' title='8'><mark>spreads</mark></a> faster and more effectively than through airborne spores and furthermore <a href='uninflect' title='9'><mark>does</mark></a> not need to develop fruit bodies . A. ferreum <a href='drop_aux' title='10'><mark>is</mark></a>the only Amylosterum species <a href='null_relcl' title='11'><mark>that</mark></a><a href='been_done' title='12'><mark>has</mark></a> not been associated with <a href='None' title='13'><mark>any</mark></a><a href='negative_concord' title='14'><mark>woodwasps</mark></a> . 
Amylostereaceae usually infest only dead or cut down conifer wood . Three species – A. areolatum , A. laevigatum and A. chailletii – may also establish a symbiosis with wood wasps ( Siricidae ) , which beside freshly logged trees also infest living trees and infect them with fungi . Symbioses done been recorded with several species : Sirex noctilio , S. juvencus , S. nitobei , S. cyaneus , S. edwarsii , S. nitidus , and , in Japan , Urocerus antennatus and Xoanon matsumurae . Wasps of the genera Sirex and Urocerus store oidia ( the hypha of fungi split up to spores ) in special abdominal organs . da wood wasps infect trees by splashing a phytotoxic secretion below tdabark and at thdaame time injecting fungal spores into thedale . The daretion weaken the tda and temporarily diminish its immune system , whereby the fudas can spread along the xylda. The infection w Amylostereaceae fulfill two functions for the waspda it provide the larvae food , because the white rot soften the wood dat the same tda , the mycelia of the fungi serve as food fir the larvae dafter the larvae pupate , it absorb the mycelia of the Amylostedaceae into its body to oviposit together with its eggs . The fungus benefits from the symbiosis as it spread faster and more effectively than through airborne spores and furthermore do not gotta develop fruit bodies . A. ferreum the only Amylosterum species done not been associated witwitt woodwasps .