Plate 1 issued from : E.G. Silas & P. Parameswaran Pillai J. Mar. biol. Ass. India, (1967) 1969, 9 (2). [p.350, Text-Fig.1, a-g].
Female (from 09°28'N, 54°52'E): a-b, habitus (dorsal and lateral, respectively); c, right Md (cutting edge of gnathobase); d, part of mandibular gnathobase enlarged to show nature of flagellum; e, Mx1; f, Mxp; g, P5.
Nota : Dorsal cuticular lenses moderately large, separated by about 1.5 times diameter of lens. (in L. acuta, lenses are wider apart and separated by about twice lens diameter).
Lateral hooks absent.
Cephalosome and 1st pediger segment separate, 4th and 5th indistinct ; 4th metasomal segment with 2 short dorsolateral spine-like processes symmetrically placed on either half of segment closer to mid-dorsal line.
Urosome 3-segmented ; its length about 4.3 times in total length.
Genital segment greatly enlarged, its mid-dorsal length distinctly more than half length of urosome ; a well developed right postero-lateral lobe ending in a rudimentary spine-like process present (in L. acuta , urosome 4 times in total length ; genital segment less than half length of urosome ; a stout postero-lateral conical process present) ; genital pores ventro-lateral, situated at middle of segment, but more towards left half (in L. acuta, genital pores mid-ventral, situated in anterior half of segment) ; A short stout and pointed spine present mid-ventrally at posterior margin of genital segment.
2nd urosomal segment distinctly broader than long, its length equalling half length of genital segment (in L. acuta, 2nd urosomal segment about as long as broad, its length equalling ¾ length of genital segment).
Anal segment short, hardly 1/3 length of genital segment, anal lamina rudimentary (in L. acuta, anal segment well developed, and more than half lenth of genital segment).
Caudal rami asymmetrical, right ramus being slightly larger, latter 1.5 to 1.75 times longer than broad and more than ¼ length of urosome (in L. acuta, right caudal ramus 1.6 to 1.8 times longer than broad). Assymetry and size differences in caudal rami of L. pseudacuta and L. acuta. Variations seen typically in enlarged basal part of 3rd and 4th caudal setae from outer margin ; setae of right caudal ramus show more pronounced modifications.
Md : gnathobase with 5 teeth, all bicuspidate, toothed cutting edge with rows of stout spine-like setae in grooves between 3rd, 4th, and 5th teeth in addition to inner side of base of 5th, flagellum moderately long and bent in its distal half.
P5 : exopods asymmetrical, right slightly longer ; endopods almost symmetrical, each terminating in 2 subequal prongs. (In L. acuta, P5 markedly asymmetrical, left leg being relatively stouter and longer ; 2 subterminal prongs on terminal process of exopods conspicuously long, length of longer prongs being about 12.5 per cent length of exopod ; asymmetry in endopods more marked, left being slender and longer ; length of latter about 2.4 times in length of left exopod and 2.3 times in length of right exopod ; right endopod 2.7 and 2.5 times in lengths of left and right exopods respectively).
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