Anamorph: colonies reaching (14-) 25-30 mm diam. after 10 days, rather compact, white, with cream-coloured to pale yellow (rarely yellow) or uncoloured reverse. Conidiogenous cells produced directly on prostrate hyphae or on secondary branches. Secondary branches less frequent than in A. lecanii. Conidiogenous cells generally longer than those of A. lecanii and less tapering, measuring (15-) 20-35 x 1.0-1.7 µm. Conidia produced in globose heads, ellipsoidal to subcylindrical, more irregular in size and shape, longer and narrower than in A. lecanii, measuring (2-) 2.5-5.5 (-6) x 1-1.5(-1.8) µm. Octahedral crystals commonly present in culture.
Teleomorph: not known.
Not formally assessed, and would be considered as Data Deficient due to the difficulty of separation from Akanthomyces lecanii.
On various insects, especially scale insects; also reported from fungi.
Reported from Durham, Hampshire and Norfolk. Probably much under-recorded.