Hymedesmia (Hymedesmia) minuta Alander (1935) is a very thin microhispid crust on deep water corals (Lophelia) recorded only once from Sweden. Its status needs confirmation.
Colour: Grey in alcohol.
Shape, size, surface and consistency: Very thin crust. Surface somewhat uneven, minutely hispid.
Spicules: Megascleres: Tornotes are polytylote anisotylotes: 160-215 x 2-3 µm; acanthostyles in the usual two size classes, both entirely spined, heads provided with strong recurved spines: 150-210 x 10-12 µm and 70-90 x 6-7 µm. Microscleres: Arcuate chelae with slightly inward-directed, short alae: 20-22 µm.
Ecology: Deep water, on Lophelia, 85 m.
Distribution: Known only from Sweden.
Type specimen information: No data.
This is an ill-known species characterized by small, strongly spined acanthostyles and polytylote tylotornotes. These characters are not particularly unusual for Hymedesmia so the specific distinctness of this is not well-established.
Source: Alander (1935).