Conicostomatinae Lowry & Stoddart 2012, subfam. nov.

• Main Authors: Lowry, J. K., Stoddart, H. E.
• Format: Text
• Language: unknown
• Published: Zenodo 2012
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Amphipoda; Lysianassidae; Baja; King George Island; Norway; New Zealand; De la Costa; Lowry; Maxwell Bay
• Online Access: https://dx.doi.org/10.5281/zenodo.5251344; https://zenodo.org/record/5251344

Conicostomatinae subfam. nov. Diagnosis. Head partially covered by coxa 1 or completely covered by pereonite 1 and coxa 1. Epistome and upper lip fused. Maxilla 2 inner plate subequal in length to outer plate. Maxilliped coxa and basis enlarged; palp article 4 reduced or absent. Mouthpart bundle subconical. Gnathopod 1 simple; propodus small; dactylus slightly curved. Urosome compressed. Included genera. Acontiostoma Stebbing, 1888; Amphorites gen. nov. Conicostoma Lowry & Stoddart, 1983; Ocosingo J.L. Barnard, 1964; Scolopostoma Lowry & Stoddart, 1983 and Stomacontion Stebbing, 1899. Remarks. Lowry & Stoddart (1983) also included in their ‘conicostomatid’ group the genera Acidostoma Lilljeborg, 1865, Phoxostoma K.H. Barnard, 1925, Shackletonia K.H. Barnard, 1931 and Socarnoides Stebbing, 1888 (type species only). Further study has shown that these genera, although they do have conical or subconical mouthpart bundles, do not belong in the conicostomatine group; Acidostoma and Shackletonia have recently been assigned to a new lysianassoid family, Acidostomatidae by Lowry & Stoddart (in press); Phoxostoma and Socarnoides remain for now in the subfamily Lysianassinae. Phoxostoma differs from conicostomatines in having the outer plate of maxilla 2 offset from the inner plate and in not having a compressed urosome. Socarnoides has a left lacinia mobilis, the epistome and upper lip separate and does not have a compressed urosome – all characters that exclude it from the conicostomatines. The genus Stomacontion is problematic (Lowry & Stoddart 1983; Rauschert 1997). It has in the past contained too much generic level variability. One set of species formerly considered in the genus contain a synapomorphy in the form of a vase-shaped palp on maxilla 1. In this paper we remove these taxa to the new genus Amphorites and this appears to stabilise the Stomacontion concept. The very poorly known taxon, Stomacontion capense K.H. Barnard, 1916, cannot be placed in a genus and is considered as incertae sedis . It is possible that S. insigne and S. bulbus are synonyms. : Published as part of Lowry, J. K. & Stoddart, H. E., 2012, Australian and South African conicostomatine amphipods (Amphipoda: Lysianassoidea: Lysianassidae: Conicostomatinae subfam. nov.), pp. 43-65 in Zootaxa 3248 (1) on page 45, DOI: 10.11646/zootaxa.3248.1.4, http://zenodo.org/record/5249133 : {"references": ["Stebbing, T. R. R. (1888) Report on the Amphipoda collected by H. M. S. Challenger during the years 1873 - 1876. Report on the Scientific Results of the Voyage of H. M. S. Challenger during the years 1873 - 76, Zoology, 29, 1 - 1737, pls 1 - 210.", "Lowry, J. K. & Stoddart, H. E. (1983) The shallow-water gammaridean Amphipoda of the subantarctic islands of New Zealand and Australia: Lysianassoidea. Journal of the Royal Society of New Zealand, 13 (4), 279 - 394.", "Barnard, J. L. (1964) Los anfipodos bentonicos marinos de la costa occidental de Baja California. Revista de la Sociedad Mexicana de Historia Natural, 24, 205 - 273.", "Stebbing, T. R. R. (1899) Revision of Amphipoda (continued). Annals and Magazine of Natural History, Series 7, 4, 205 - 211.", "Lilljeborg, W. (1865) On the Lysianassa magellanica H. Milne Edwards, and on the Crustacea of the suborder Amphipoda and subfamily Lysianassina found an [sic] the coast of Sweden and Norway. Transactions of the Scientific Society at Uppsala, 6 (1), 1 - 38, pls 1 - 5.", "Barnard, K. H. (1925) Contributions to the crustacean fauna of South Africa. No. 8. Further additions to the list of Amphipoda. Annals of the South African Museum, 20, 319 - 380, pl. 34.", "Barnard, K. H. (1931) Diagnosis of new genera and species of amphipod Crustacea collected during the ' Discovery' investigations, 1925 - 1927. Annals and Magazine of Natural History, Series 10, 7, 425 - 430.", "Rauschert, M. (1997) Stomacontion bulbus sp. n. (Crustacea, Amphipoda, Gammaridea, Lysianassidae) aus der Maxwell Bay von King George Island (Sudshetlandinseln). Mitteilungen aus dem Zoologischen Museum in Berlin, 73 (1), 17 - 25.", "Barnard, K. H. (1916) Contributions to the crustacean fauna of South Africa. 5. - The Amphipoda. Annals of the South African Museum, 15, 105 - 302, pls 26 - 28."]}