Metalanceola , Pirlot 1931
Creators
Description
Genus Metalanceola Pirlot, 1931
Metalanceola, Pirlot, 1931: 12. Pirlot 1939: 12–13. Bowman & Gruner 1973: 21–22. Vinogradov et al. 1982: 88.
Type species. Metalanceola chevreuxi Pirlot, 1931 by monotypy. The unique type, a male measuring about 6 mm, is in the MOM (37 2105), on microscope slides. The type locality is the North Atlantic, near Madeira [31°06’N 24°06’45”W]; Princesse Alice II Stn. 1781 (not 1871 as stated by Pirlot), 0–5000 m, 21 Aug. 1904.
Diagnosis. Body length up to 8 mm. Eyes very small, round. Antennae 1 with large callynophore (narrower in female) with one short and two elongated terminal articles. Antennae 2 a little shorter than A1. Mandibles with relatively broad incisor; body sub-triangular in shape. Maxillae 1; palp without feathered setae on outer distal corner, shorter than outer lobe; outer lobe with straight distal margin armed with three robust setae which are much larger than two similar setae located sub-terminally; inner lobe narrowly oval. Maxillae 2 with relatively narrow lobes, each armed with three strong setae distally. Maxilliped with short, narrow inner lobes. Gnathopoda and pereopods 3 & 4 simple. Pereopods 5–7 with retractile and fully hooded dactyls; spoon-shaped formation hypertrophied.
Monospecific.
Sexual dimorphism. Females have a moderately inflated pereon but it is not especially inflated in males. However, the most significant difference occurs in the structure of the antennae. In males antennae 1 are relatively longer with wider articles and the callynophore is much more robust; in females the callynophore is relatively longer and narrower. Antennae 2 are relatively longer than the first in females, about 0.6x A1, whereas in males they are only about half as long (or less) than the first. In addition, pereopod 7 is stronger in males, the telson is relatively shorter in females and males have small genital papillae, medially near the base of the seventh pereopods.
Remarks. This is a very distinctive genus, as noted above. The strong dactyls of pereopods 3–7 indicate that it probably has a close relationship with a gelatinous host.
Notes
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Linked records
Additional details
Identifiers
Related works
- Is part of
- Journal article: http://publication.plazi.org/id/FFF1EC5AFFD1DD283450FFE3FFB2FF90 (URL)
- Is source of
- https://sibils.text-analytics.ch/search/collections/plazi/03C89422FF94DD6E34C7F961FCC3FC9A (URL)
Biodiversity
- Event date
- 1904-08-21
- Family
- Metalanceolidae
- Genus
- Metalanceola
- Kingdom
- Animalia
- Order
- Amphipoda
- Phylum
- Arthropoda
- Scientific name authorship
- , Pirlot
- Taxon rank
- genus
- Type status
- holotype
- Verbatim event date
- 1904-08-21
- Taxonomic concept label
- Metalanceola , 1931 sec. Zeidler, 2009
References
- Pirlot, J. M. (1931) Metalanceola chevreuxi genre et espece nouveaux d Amphipodes Hyperides. Bulletin de l'Institut Oceanographique Monaco, No. 572, 1 - 14.
- Pirlot, J. M. (1939) Sur des Amphipodes Hyperides provenant des croisieres du Prince Albert 1 er de Monaco. Resultats des Campagnes Scientifiques Accomplies sur son Yacht par Albert 1 er Prince Souverain de Monaco, fascicule 102, 1 - 64.
- Bowman, T. E. & Gruner, H. - E. (1973) The families and genera of Hyperiidea (Crustacea: Amphipoda). Smithsonian Contributions to Zoology No. 146, 1 - 64.
- Vinogradov, M. E., Volkov, A. F. & Semenova, T. N. (1982) Amfipody-Giperiidy (Amphipoda: Hyperiidea) Mirovogo Okeanea. Akademiya Nauk SSSR, Opredeliteli po Faune SSSR No. 132. Leningrad, 492 pp. [In Russian]. English translation, 1996, Smithsonian Institution Libraries, Washington D. C., D. Siegel-Causey, Scientific Editor.