Abyssomysis, Wittmann, 2020

Wittmann, Karl J., 2020, Lophogastrida and Mysida (Crustacea) of the “ DIVA- 1 ” deep-sea expedition to the Angola Basin (SE-Atlantic), European Journal of Taxonomy 628, pp. 1-43 : 20

Abyssomysis gen. nov.

urn:lsid:zoobank.org:act:41771FE0-7B94-4422-803C-C4B2292B9BAF

Type species

Abyssomysis cornuta gen. et sp. nov. by monotypy and present designation.

Diagnosis

Calyptommini with eyeplate formed by a transverse, median lamina (= ocular symphysis) connecting separate, rudimentary eyestalks; lamina not incised, visual elements absent. Carapace normal, anteriorly rounded.Antennula with well-developed, setose appendix masculina; proximal segment of trunk without ventral carina. Antennal sympod without spiniform extension; antennal scale well developed, entire, its smooth outer margin ending in a prominent tooth, terminal lobe well-developed. Labrum with small, knob-like rostral process. Mandibles with distinct molar part; lacinia mobilis present on left mandible, absent or vestigial on right mandible. First thoracopods normal; basis of endopod with long, setose endite. Females with three pairs of functional oostegites. Penes normal. Pleopods of both sexes reduced to unsegmented, plate- or rod-like endopods, except that the fourth male pleopod is sub-segmented. Both rami of the uropods unsegmented, setose all around, without spines. Telson short, terminally truncate; lateral margins smooth, terminal margin with spines.

Etymology

The generic name is an amalgamated noun with female ending, referring to the occurrence of this mysid in the abyssal plain.