Everything about Almidae totally explained
The animal family
Almidae includes about six genera of
segmented worms.
A notable peculiarity of some species in this family is a tendency to extensions of the body wall in the vicinity of or including the male pores. These extensions may be mere protuberances, as in some species of
Drilocrius; or involve a greater extent of the body wall, as in genus
Glyphidrilocrius. They take the form of wing or keel-like structures called alae in
Glyphidrilus species and paddle-shaped claspers in
Drilocrius alfari.
They are also nicknamed
Earthworms.
All species of genus
Alma have claspers. The male pores are near the tips of these claspers, and they're furnished with genital
chaetae and sucker-like structures.
Most members of this family have one pair of male pores on segment 15 through 30. Female pores are located on segment 14.
Glyphidrilus kukenthali is one of only three ‘earthworm’ species known to have two pairs of female pores, in 13 and 14.
A possibly related family is
Criodrilidae that contains genera
Criodrilus and
Biwadrilus with male pores in 15 and 13, respectively.
Spermathecae are absent (a rare condition in
oligochaetes) and one to several
spermatophores containing the sperm are transferred between partners and attached near the genital field.
Further Information
Get more info on 'Almidae'.
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