dcsimg

Diagnostic Description

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Escal bulb without membranous anterior crest; the distal escal appendage an elongate, cylindrical stalk, with an expanded distal end and an elongate, compressed prolongation emerging anteriorly from bases of escal hooks, without lateral serration. But bearing tiny filaments at distal tip. Prolongation of distal escal appendage extremely short, 2.9% SL (vs. 5.2-20.8% SL). There are 2 lightly pigmented, bony, hooklike denticles embedded in esca. Posterior escal appendage laterally compressed, with a rounded posterior margin and pointed distal tip (Ref. 56229).
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Recorder
Estelita Emily Capuli
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Morphology

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Dorsal soft rays (total): 5; Analsoft rays: 5
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Lasiognathus amphirhamphus

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Lasiognathus amphirhamphus is a species of wolftrap angler found in the Madeira Abyssal Plain in the east-central Atlantic Ocean where it occurs at a depth of from 1,200 to 1,305 metres (3,937 to 4,281 ft). The females of this species grow to a length of 15.7 centimetres (6.2 in) SL. This species is characterized by having only two (as opposed to three) bony hooks on its esca, which are lightly pigmented. The distal escal appendage is elongated and cylindrical with a long, compressed prolongation at the tip as in L. saccostoma. The prolongation has six tiny filaments at the tip and no lateral serrations. The posterior escal appendage is broad and laterally compressed. Its species name is from the Greek for "double hook", referring to its escal hooks.[2]

References

  1. ^ Ralph, G. (2015). Lasiognathus amphirhamphus. The IUCN Red List of Threatened Species. doi:10.2305/IUCN.UK.2015-1.RLTS.T67964123A67964193.en
  2. ^ Pietsch, T.W. (2005). Buth, D. G. (ed.). "New Species of the Ceratioid Anglerfish Genus Lasiognathus Regan (Lophiiformes: Thaumatichthyidae) from the Eastern North Atlantic off Madeira". Copeia. 2005 (1): 77–81. doi:10.1643/CI-04-184R1.

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Lasiognathus amphirhamphus: Brief Summary

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Lasiognathus amphirhamphus is a species of wolftrap angler found in the Madeira Abyssal Plain in the east-central Atlantic Ocean where it occurs at a depth of from 1,200 to 1,305 metres (3,937 to 4,281 ft). The females of this species grow to a length of 15.7 centimetres (6.2 in) SL. This species is characterized by having only two (as opposed to three) bony hooks on its esca, which are lightly pigmented. The distal escal appendage is elongated and cylindrical with a long, compressed prolongation at the tip as in L. saccostoma. The prolongation has six tiny filaments at the tip and no lateral serrations. The posterior escal appendage is broad and laterally compressed. Its species name is from the Greek for "double hook", referring to its escal hooks.

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