The Marine Fauna of New Zealand: Isopoda, Aegidae (Crustacea)

Figure 53. Aegiochus gordoni sp. nov. Male paratype (8. mm, NIWA 23873). A, mandible (broken); B, mandible palp article
3; C, maxillule; D, maxillule apex; E, maxilla ; F, maxilla apex; G, maxilliped; H, maxilliped articles 2–5.
posterior margins straight, posterolateral angle blunt
(coxae 5 and 6, more than 45°) and acute (coxa 7, acute
less than 45°). Pleon with pleonite largely concealed
by pereonite 7; pleonite 4 with posterolateral margins
not extending to posterior margin of pleonite 5; pleonite
5 with posterolateral angles free, not overlapped
by lateral margins of pleonite 4. Pleotelson 0.7 times as
long as anterior width, dorsal surface without longitudinal
carina; lateral margins convex, serrate (finely),
posterior margin converging to caudomedial point,
with 0 RS.
Antennule peduncle articles 3 and 4 .0 times as
long as combined lengths of articles and 2, article 3
99
3.0 times as long as wide; flagellum with 10 articles,
extending to pereonite 2. Antenna peduncle article 4 .9
times as long as wide, 0.7 times as long as combined
lengths of articles –3, inferior margin 2 plumose setae,
and 4 short simple setae; article 5 .4 times as long as
article 4, 2.8 times as long as wide, inferior margin
with 3 palmate setae, anterodistal angle with cluster of
2 short simple setae (and 2 pappose setae); flagellum
with articles, extending to posterior of pereonite 3.
Frontal lamina posterior margin free, downwardly
projecting, blade-like, wider than long, triangular, anterior
margin acute, forming median angle, posterior
margin not abutting clypeus.