The antennal scale barely reaches the distal end of the antennular
Anterior margin of second segment of antennular
peduncle forming broadly and evenly rounded lobe over outer basal part of scaphocerite (modified from Wasmer, 1986).
The rostrum is arched over the orbits, and reaches to or slightly beyond the end of the antennular
peduncle, and it is rather narrow.
Acumen terminating in upturned corneous spine and reaching just distal of midpoint of antennular
In terms of the pattern described by Grygier and Ohtsuka (1995) for female monstrilloid antennular
armature, element 1 is present on the first segment; elements 2[d.sub.1], 2[d.sub.2], 2[v.sub.1], 2[v.sub.2], 2[v.sub.3], and IId on the second segment, with first four listed spiniform elements particularly long and well-developed (Fig.
chemosensitivity in the spiny lobster, Panulirus argus: amino acids as feeding stimuli.
statocyst that appears during larval stage VII of the giant river prawn has an array of sensory structures that enable the perception of chemical and tactile stimuli beginning with its early life stages.
Impairment of chemosensory antennular
flicking response in the Dungenes crab, Cancer magister, by petroleum hydrocarbons.
Females 0.8-1 mm, easily recognised by the curved elongate rostrum, the tip about two antennular
lengths from the antennule itself (Figure 4a, b) and ocellus of similar size as eye.
notialis: short rostrum, straight distally, and the proximodorsal margin convex, usually extending anteriorly to the end of distal antennular
segment, sometimes reaching to proximal one-fourth of broadened portion of lateral antennular
flagellum, with RL/CL <0.75; and 2) F.
seta inserted at about 1/3 from tip of antennule (Fig.
chemo-sensitivity in the spiny lobsters, P.