When podites spread apart, the setae on the outer side of each exopod
are pulled away from each other, causing the interconnected setal array to open like a hand fan being pulled from both ends.
2-segmented, elongated; first segment with short, slender inner seta; second segment with 3 setae distally, of which smallest seta pectinate apically.
3B) being the longest element of the exopod
. The Colombian specimens bear subtle morphological discrepancies with the Belizean specimens reported by Rocha (1995b); in the Colombian populations (Fig.
cordiform, with broadly rounded apex; endopod with thickset distal part, with bilobed apex.
unsegmented, with 2 long and 1 shorter unequal terminal aesthetascs, and 1 simple seta.
Also, the reduction of the exopod
on the first maxilliped and the loss of the grooming apparatus on the carpus of the first pereopod are also remark able.
1I) Coxa with 1 seta; basis with 2 setae; endopod 5-segmented with various number of setae; exopod
with 34-36 plumose natatory setae.
2C) consisting of coxa, basis, 3-segmented endopod, and 6-segmented exopod
; coxa unarmed; basis with 2 setae distally; first endopod segment having 1 subterminal seta, second segment with 2 minute mid-lateral and 2 terminal setae, third segment with 6 setae distally; setal formula of exopod
0, 2, 1, 1, 1, 3 (based on suture lines on posterior surface).
During this stage, further differentiation of the maxillipeds occurs, each now featuring an exopod
and an endopod.