Morphological characters based on original descriptions (see Table 14) of the megalopa of 20 species of Xanthidae from the South
Atlantic. Setation data refer to numbers of setae per segment, progressing proximally to distally. Abbrevations: Mx2: maxilla; Mxp2:
maxilliped 2; Mxp3: maxilliped 3.
_____________________________________________________________________________________________________________

Family/Species Rostrum orientation Carapace Mx1 Mx2 Mxp1 Mxp3
and morphology outgrowths endopod endopod epipod epipod
setation setation setation setation
_____________________________________________________________________________________________________________

XANTHIDAE
Eriphia gonagra short, deflected ventrally smooth 3,4 5 18 38
Eurypanopeus abbreviatus short, deflected ventrally smooth 3 4 5 16
Eurypanopeus depressus short, deflected ventrally protuberances 1,6 8 7 12
Eurytium limosum directed anteriorly protuberances ? ? ? ?
Garthiope barbadensis short, deflected ventrally smooth 5 5 7 15
Hexapanopeus angustifrons short, deflected ventrally smooth 7 7 7 ca.20
Hexapanopeus caribbaeus short, deflected ventrally smooth 1,2 2 6 20
Hexapanopeus paulensis short, deflected ventrally smooth 4 2 8 18
Hexapanopeus schmitti short, directed anteriorly smooth 2,3 2 9 13-15
Menippe nodifrons short, directed anteriorly smooth 1,4 4-6 12-26 26-36
Micropanope sculptipes deflected ventrally protuberances ? ? ? ?
Panopeus americanus short smooth 2,3 1 7 12
Panopeus austrobesus short, deflected ventrally smooth 1,4 8(9) 6 6
Panopeus bermudensis short smooth 2,3 1 5 16
Panopeus herbstii short smooth 4,3 7 7 20
Panopeus occidentalis short, deflected ventrally smooth 5 1(2) 1(2) 6(7)
Pilumnus dasypodus short, directed anteriorly smooth 1(2),4(6) 9 6 11(13)
Pilumnus reticulatus short, directed anteriorly smooth 2,4 0 8 14
Platyxanthus crenulatus short, bifid smooth 4 9 10 20
Platyxanthus patagonicus short, deflected ventrally smooth 4 6 7 20
_____________________________________________________________________________________________________________