Kochimysis pillaii   Panampunnayil & Biju,  2007 (Mysid)
Organism information awaits expert curation
Class: Malacostraca

Size: 3.5 mm (male), 3.3 mm (female)

Body short and smooth. Anterior margin of carapace broadly triangular, rostrum inconspicuous, antero-lateral corners rounded, posterior margin emarginate leaving last three thoracic somites dorsally exposed. In female frontal border of carapace scarcely produced. Eyes well developed, closely set together, globular; eyestalks short and thick, cornea narrower than stalk. Antennular peduncle short and stout, first segment longer than distal segment, outer distal corner with finger-like lobe bearing two setae, second segment short with one stout plumose seta on inner distal corner; third segment with three setae on inner distal angle and one seta on inner margin, male lobe small, rounded and hirsute.
Antennule of female as in male except for absence of male lobe. Antennal scale oval, 3.5 times as long as broad, setose all round, shorter than antennular peduncle, distal suture absent; antennal peduncle longer than scale, three-segmented, second and third segments long and subequal in length; antennal sympod with finger-like process between peduncle and scale. Labrum with rounded anterior margin, posterior border bilobed. Mandibles with well-developed lacinia mobilis, incisor, and molar processes; spine row of left with four strong spines and right with three spines; palp three-segmented, first segment short, second segment broad and elongate bearing two setae on outer distal corner, third segment half length of second with oblique distal margin armed with row of pectinate setae and one long terminal seta. Inner lobe of maxillule with three long and six short plumose setae, outer lobe distally armed with 10 spines and three subterminal setae. Maxilla with large basal lobe, distal lobe deeply bifid, second segment of endopod oval, segments subequal in length; exopod with three setae at apex.
First thoracic appendage with exopod and epipod; basis of endopod with prominent gnathobasic lobe, ischium and merus moderately produced inwards, all segments with setae on inner margin, dactylus with nail and group of pectinate setae. Second thoracic endopod with carpus and propodus with notched outer margin; in female carpus and propodus simple; basis produced inwards; dactylus with group of pectinate setae, nail absent. Third and fourth thoracic endopods with carpopropodus divided into three subsegments; remaining endopods becoming longer posteriorly, carpopropodus divided into four subsegments; dactylus ending in two small setae. Basal segment of exopod rounded, flagelliform part nine segmented. In male eighth thoracic limb with small tubular genital organ.
Pleopods in both sexes uniramous, reduced to unsegmented setose plates, becoming longer posteriorly. Uropods broad, longer than telson, both rami oval, setose all round and without spines, exopod longer than endopod. Telson entire, longer than last abdominal segment, slightly longer than broad at base, lateral margins nearly straight, distal third armed with six progressively longer spines, apex broadly rounded with two pairs of spines, outer pair almost three times as long as inner pair.

Synonym (s)

Common Name (s)
Economic Importance and Threats



• Kerala, Kochi Backwaters (Lat: 9.67) (Long: 76.16) INDIA (Record: 03/2003-03/2004)
• Kerala, Kochi Backwaters (Lat: 10.17) (Long: 76.39) INDIA (Record: 03/2003-03/2004)

Literature Source(s)
  • Panampunnayil, SU and Biju, A (2007) A new genus and species of Heteromysini (Crustacea-Mysidacea) from the backwater of Kochi (Kerala, India) Journal of Natural History Taylor and Francis 41(29–32) 1955–1963 Available at - http://dx.doi.org/10.1080/00222930701515553
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org

Back to Search