Subfamily Lanuginellinae Schulze, 1897

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Diagnosis

Rossellidae with strobiloplumicomes as microscleres.

ID Keys

(1) Hypodermal pentactines of one type and common to Rossellidae; anchorate pentactines absent (mainly basiphytose – firmly attached by its base to a solid substratum, or lophophytose – rooted by diactine spicules) ................................. 2
Hypodermal pentactines of two types: common and short-toothed anchorate spicules, outwardly protruded from the body (mainly lophophytose – anchored to the bottom by anchorate pentactines, or basiphytose – attached to solid rough substratum) ................ 6
(2) Dermalia are chiefly pinular hexactines and pentactines (in the latter the unpaired ray is distally directed) ..................................... 3
Dermalia are chiefly stauractines anddiactines ........... 4
(3) With oxyoidal microscleres besides strobiloplumicomes; with prostalia lateralia or basalia of tufts of diactines ........... Calycosoma
With discoidal, oxyoidal and onychoidal microscleres besides strobiloplumicomes (prostalia lateralia are absent) ........ Sympagella
(4) Discohexasters are present among microscleres .................... 5
Hemihexasters and hexasters are present besides strobiloplumicomes ....... Doconesthes
(5) Dermalia are chiefly stauractines; microscleres are discohexasters besides strobiloplumicomes ........ Lanuginella
Dermalia are chiefly diactines, microscleres are discohexasters and onychohexasters besides strobiloplumicomes ... Lanugonychia
(6) Discohexasters are absent or rarely microdiscohexasters are present; common hypodermal pentactines (other than anchorate ones) have orthotropal tangential rays (displaying a regular cross-figure) ............... Lophocalyx
Discohexasters have the usual form of macrodiscohexasters, other than asterous discoidal spicules can be found; the common hypodermal pentactines (other than anchorate ones) have paratropal tangential rays ...... Mellonympha

Diagnosis References

Tabachnick, K. 2002. Family Rossellidae Schulze, 1885. pp. 1441-1505 in Hooper, J.N.A. & Soest, R.W.M. Van (eds). Systema Porifera. A guide to the classification of sponges. New York : Kluwer Academic/Plenum Publishers Vol. 2. [1492]

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