Mesokalliapseudes crassus
Creators
Description
Mesokalliapseudes crassus (Menzies, 1953)
Kalliapseudes crassus Menzies, 1953: 474–479, Fig. 17–20. Lang, 1956: 205, 207, 209, 223. Băcescu, 1961: 164. Sieg, 1982: 3. Guţu, 2006: 141.
Kalliapseudes (Mesokalliapseudes) crassus. Lang, 1956: 211, 216, 217, Fig. A4. Drumm, 2003: 1, 2, 11.
Mesokalliapseudes crassus. Guţu, 2006: 142. Drumm and Heard, 2007: 459–468, Figs. 1–3.
Type material. Holotype female (LACM CR1950 – 076.1), paratypes (26 ovigerous hermaphrodites and two hermaphrodites with oostegites, LACM CR1950 – 076.2).
Material examined. Holotype: ovigerous hermaphrodite, 8 mm, San Quintin Bay, lower (= Baja) California, Mexico, 7 Apr 1950, leg. Chas Horvath, Don Reish and R. J. Menzies (LACM CR1950 – 076.1). Paratypes: 26 ovigerous and 2 preparatory hermaphrodites, 6–7 Apr 1950, depth 1.5–4.5 m, same locality and collectors as holotype (LACM CR1950 – 076.2). Non –types (USNM 262506): SQ 13: 1 ovigerous hermaphrodite, San Quintin Bay, Baja California, Mexico, North Pacific Ocean, 22 Apr 1960, leg. J. Barnard, depth 0–13 m; SQ 28: 5 ovigerous, 2 preparatory (1 partially dissected) and 1 juvenile, San Quintin Bay, Baja California, Mexico, North Pacific Ocean, 21 Apr 1960, leg. J. Barnard, depth 5–7 m.
Diagnosis (adult). Rostrum acute. Medial extension of antenna with numerous (12 or 13) plumose sete; third article with distinctive narrow, spinulate process. Cutting edge of fixed finger of cheliped with numerous (~ 10) bipectinate setae and cutting edge of dactylus with numerous (~ 11) serrate setae increasing in length distally; fixed finger more than two–thirds length of dactylus. Pereopod 6 propodus with numerous (~ 12) outer serrate spiniform setae. Hyposphaenia absent. Hermaphroditic.
Type locality. San Quintin Bay, Baja California, Mexico, 0–13 m depth (Fig. 1, number 34; Fig. 80).
Geographic distribution. Known from type locality only.
Remarks. Mesokalliapseudes crassus was shown to be a protandric hermaphrodite (Drumm and Heard, 2007) and can easily be distinguished from its congeners by its acute rostrum and distinct spinulate process on the antenna. All other congeners have a rounded rostrum. It also appears that M. crassus is more setose and spinose than other members of the genus, especially the antenna, antennules, chela and pereopod 6.
Notes
Files
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Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- LACM
- Event date
- 1950-04-07 , 1960-04-21 , 1960-04-22
- Family
- Kalliapseudidae
- Genus
- Mesokalliapseudes
- Kingdom
- Animalia
- Material sample ID
- CR1950, 076.1 , CR1950, 076.1, 076.2 , CR1950, 076.2, USNM 262506
- Order
- Tanaidacea
- Phylum
- Arthropoda
- Scientific name authorship
- Menzies
- Species
- crassus
- Taxon rank
- species
- Type status
- holotype , paratype
- Verbatim event date
- 1950-04-07 , 1960-04-21 , 1960-04-22
- Taxonomic concept label
- Mesokalliapseudes crassus (Menzies, 1953) sec. DRUMM & HEARD, 2011
References
- Menzies, R. J. (1953) The apseudid Chelifera of the eastern tropical and north temperate Pacific Ocean. Bulletin of the Museum of Comparative Zoology at Harvard College, 107, 443 - 496.
- Bacescu, M. (1961) Contribution a la connaissance des tanaidaces de la Mediterranee orientale - 1: Les Apseudidae et Kalliapseudidae des cotes d'Israel. The Bulletin of the Research Council of Israel, Section B. Zoology, 10 B, 137 - 170.
- Sieg, J. (1982) Anmrkungen zum Genus Kalliapseudes Stebbing, 1910 mi Beschreibung einer neuen Art Kalliapseudes bahamensis n. sp. (Crustacea: Tanaidacea). Mitteilungen aus dem Zoolgischen Museum der Universitat Kiel, 1 (9), 3 - 17.
- Gutu, M. (2006) New Apseudomorph taxa (Crustacea, Tanaidacea) of the World Ocean. Bucaresti: Curtea Veche, 318 pp.
- Drumm, D. T. (2003) Kalliapseudes (Mesokalliapseudes) macsweenyi, a new species of Kalliapseudidae (Crustacea: Tanaidacea: Apseudomorpha) from mangroves in Florida. Zootaxa, 357, 1 - 12.
- Drumm, D. T. & Heard, R. W. (2007) Redescription of Mesokalliapseudes crassus (Menzies, 1953) (Crustacea: Tanaidacea: Kalliapseudidae): the first record of a hermaphroditic kalliapseudid. Proceedings of the Biological Society of Washington, 129 (4), 459 - 468.