Davis & Green, 1974 (p.60, Descr.F, figs.F); Huys & Boxshall, 1991 (p.155, 164, 465, fig.F); Grygier, 1995 a (p.72)
Figures
Planche 1 issued from : R. Huys & G.A. Boxshall in Copepod Evolution, The Ray Society, 1991. [p.164, Fig.2.5.7]. Female (from Resolute Bay, Canada): A, rostral projection (dorsal); B, idem (lateral view).
Nota: After Huys & Boxshall (1991, p.155), this species is the only monstrilloid with an anteriorly directed structure in the adult; in other monstrilloids the rostrum is either absent or represented by a slight extension of the anterior margin of the dorsal cephalic shield wrapped around the frontal surface of the cephalothorax.. The authors interpret the presence of a rostrum of M. nasuta as a secondary condition, probably resulting from heterochrony.
Planche 2 issued from : C.C. Davis & J.M. Green in Int. Revue ges. Hydrobiol., 1974, 59 (1) [p.59, Figs.7-8]. Female (from 74°40'N, 94°47'W): 7, habitus (lateral); 8, forehead (dorsal; showing right A1).
Planche 3 issued from : C.C. Davis & J.M. Green in Int. Revue ges. Hydrobiol., 1974, 59 (1) [p.61, Figs.9-10]. Female: 9, left P5; 10, urosome (ventral; showing protuberance of the genital segment).
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