Subfamily Euplectellinae Schulze, 1886

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Diagnosis

Coexists with family diagnosis together with corresponding subfamily definition.

ID Keys

KEY TO GENERA OF EUPLECTELLINAE
(1) Dermalia are mainly pentactines (in relatively large specimens) ------------------------------------------------------- 2
Dermalia are hexactines --------------------------------------------------------------------------------------------------------- 3

(2) Atrialia are mainly hexactines; basalia are represented by several tufts situated on the lower edge of the body; spicules of basalia have no teeth; atrial cavity is low; the body is flattened ---------------------------- Chaunangium
Atrialia are mainly pentactines; anchors have four teeth; atrial cavity present; the body is oval ----- Placopegma

(3) Anchorate basalia together with tauactines protrude from the peduncle formed in the lower part of the body --------------------------------------------------------------------------------------------------------------------------------------- 4
Basalia protrude directly from the lower part of the body ------------------------------------------------------------------- 5
Basalia form a single tuft --------------------------------------------------------------------------------------------------------- 6

(4) Only discohexasters present among microscleres -------------------------------------------------------- Acoelocalyx
Microscleres various: hexasters, sometimes hemihexasters and hexactines; discohexasters, floricomes and sometimes onychasters ---------------------------------------------------------------------------------------- Malacosaccus

(5) Basalia form several tufts; microscleres are hexactines, hemihexasters, hexasters, floricomes and, probably,
discohexasters ----------------------------------------------------------------------------------------------------- Docosaccus
Floricomes present among microscleres; atrialia are pentactines; lateral oscula numerous -------------- Euplectella
Floricomes absent; dermal spicules have pinular rays; atrialia are usually hexactines ------------------------Holascus

Diagnosis References

Tabachnick, K. 2002. Family Euplectellidae Gray, 1867. pp. 1388-1434 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. [1389]

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