Themistella fusca
Creators
- 1. El Colegio de la Frontera Sur, Unidad Chetumal, Av. del Centenario km 5.5, Chetumal, Quintana Roo, 77014, Mexico. rgasca @ ecosur. mx
- 2. Laboratorio de Invertebrados Bentónicos, Unidad Académica Mazatlán, Instituto de Ciencias del Mar y LiMN, ología, Universidad Nacional Autónoma de México, PO Box 811, Mazatlán, 82000 Sinaloa, Mexico.
Description
Themistella fusca (Dana, 1853)
Lestrigonus fuscus Dana, 1853: 983, pl. 67, fig. 8a
Themistella steenstrupi Bovallius, 1887: 23; 1889: 313.
Themistella fusca — Bowman, 1973: 66, fig. 51; Siegel-Causey, 1992: 195; Vinogradov et al., 1996: 400, fig. 173; Zeidler, 2004: 33; Brusca & Hendrickx, 2005: 150 (list); García Madrigal, 2007: 151 (list); Valencia & Giraldo, 2012: 1492 (tab. 1); Lavaniegos & Hereu, 2009: 139, 142 (tab. 1), 146 (tab. 2), 151 (Appendix 1).
Material examined. 2F, in two localities (Fig. 7). TALUD III. St. 19B (25°18’24”N, 109°18’36”W), August 20, 1991, 1F, I-K, from surface to 600 m (TD, 1890 m) (ICML-EMU-12811). TALUD VII. St. 36 (25°42’37”N, 110°04’35”W), June 9, 2001, 1F, MN, from surface to 1390 m (TD, 2400 m) (ICML-EMU-12812).
Distribution. Atlantic, Pacific, and Indian oceans. In the eastern Pacific from off Baja California, Gulf of California, and south to off Guatemala and Nicaragua (García Madrigal 2007).
Remarks. A commonly collected species in the central and southern Gulf of California, T. fusca has mostly been found in epipelagic layers (Siegel-Causey 1982). Also found in the Mexican tropical Pacific (Gasca et al. 2012).
Only two female specimens were found. Specimens measured about 2.5 mm in length. Five thoracic segments are fused; fourth segment partially free dorsally. Dactyli of pereopods VI and VII distinctively bent upwards. Telson small and rounded. There are only two other lestrigonids known to have five thoracic segments fused: L. bengalensis (male juveniles) and L. ducrayi Zeidler, 1992 which has a proportionally longer telson and a shorter pereopod 2 carpal process.
Notes
Files
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Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- MN , TALUD, III , TALUD, VII
- Event date
- 1991-08-20 , 2001-06-09
- Family
- Lestrigonidae
- Genus
- Themistella
- Kingdom
- Animalia
- Order
- Amphipoda
- Phylum
- Arthropoda
- Scientific name authorship
- Dana
- Species
- fusca
- Taxon rank
- species
- Verbatim event date
- 1991-08-20 , 2001-06-09
- Taxonomic concept label
- Themistella fusca (Dana, 1853) sec. Gasca & Hendrickx, 2021
References
- Dana, J. D. (1853) Crustacea. Part II. United States Exploring Expedition. During the years 1838, 1839, 1840, 1841, 1842. Un- der the command of Charles Wilkes. U. S. N. C. Sherman, Philadelphia, 14, 689 - 1618.
- Bovallius, C. (1887) Systematical list of the Amphipoda Hyperiidea. Kungliga Svenska Vetenskapsakademiens Handlingar, 11 (16), 1 - 50.
- Bovallius, C. (1889) Contribution to a Monograph of the Amphipoda Hyperiidea. Part I: 2. The Families Cyllopodidae, Paraphronimidae, Thaumatopsidae, Mimonectidae, Hyperiidae, Phronimidae, Anchylomeridae. Kongliga Svenska Vetenskapsakademiens Handlingar, 22 (7), 1 - 434.
- Bowman, T. E. (1973) Pelagic amphipods of the genus Hyperia and closely related genera (Hyperiidea: Hyperiidae). Smithsonian Contributions to Zoology, 136, 1 - 76.
- Vinogradov, M. E., Volkov, A. F. & Semenova, T. N. (1996) Hyperiid amphipods (Amphipoda, Hyperiidea) of the world oceans. Oxonian Press Pvt. Ltd., New Delhi, 632 pp.
- Zeidler, W. (2004) A review of the hyperiidean amphipod superfamily Phronimoidea Bowman & Gruner, 1973 (Crustacea: Amphipoda: Hyperiidea). Zootaxa, 567 (1), 1 - 66. https: // doi. org / 10.11646 / zootaxa. 567.1.1
- Brusca, R. C. & Hendrickx, M. E. (2005) Cap. 12. Crustacea 4. Lophogastrida, Mysida, Amphipoda, Tanaidacea & Cumacea. In: Hendrickx, M. E., Brusca, R. C. & Findley L. T. (Eds.), A Distributional Checklist of the Macrofauna of the Gulf of California, Mexico. Part I. Invertebrates. [Listado y Distribucion de la Macrofauna del Golfo de California, Mexico, Parte I. Invertebrados]. Arizona-Sonora Desert Museum, Tucson, Arizona, pp. 139 - 154.
- Garcia Madrigal, M. S. (2007) Annotated checklist of the amphipods (Peracarida: Amphipoda) from the tropical eastern Pacific. Contributions to the Study of East Pacific Crustaceans, 4 (2), 63 - 195.
- Valencia, B. & Giraldo, A. (2012) Structure of hyperiid amphipod assemblages on Isla Gorgona, eastern tropical Pacific off Colombia. Journal of the Marine Biological Association of the United Kingdom, 92 (7), 1489 - 1499. https: // doi. org / 10.1017 / S 0025315411001780
- Lavaniegos, B. E. & Hereu, C. (2009) Seasonal variation in hyperiid amphipod abundance and diversity and influence of mesoscale structures off Baja California. Marine Ecology Progress Series, 394, 137 - 152. https: // doi. org / 10.3354 / meps 08285
- Siegel-Causey, D. (1982) Factors determining the distribution of hyperiid Amphipoda in the Gulf of California. Ph. D. Thesis, University of Arizona, Tucson, Arizona, 535 pp.
- Gasca, R., Franco-Gordo, C., Suarez-Morales, E. & Godinez-Dominguez, E. (2012) Hyperiid amphipod community in the Eastern Tropical Pacific before, during, and after El Nino 1997 - 1998. Marine Ecology Progress Series, 455, 123 - 139. [http: // www. int-res. com / abstracts / meps / v 455 / p 123 - 139 /] https: // doi. org / 10.3354 / meps 09571