Morphological characters based on original descriptions (see Table 14) of the megalopa of seven
species among four brachyuran families from the South Atlantic. Setation data refer to numbers of
setae per segment, progressing proximally to distally. Abbrevations: Mx1: maxillule; Mx2: maxilla;
Mxp2: maxilliped 2; Mxp3: maxilliped 3.
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Species Carapace Mx1 Mx2 Mxp2 Mxp3
outgrowths endopod endopod exopod exopod
setation setation setation setation
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DROMIIDAE
Cryptodromiopsis antillensis with spines; 2,4 8 10,12 4,9
"hairy"
Dromia erythropus with spines 0,2,4 6 1,3,7 10,2
Hypoconcha arcuata with spines 5 4 2,6 1,6
Hypoconcha sabulosa anterodorsal 2,2,4 1,5 2,7 0,7
spines

LATREILLIIDAE
Latreillia elegans spines and 5 3 0,6 3,5
extremely long
"antlers"

CALAPPIDAE
Hepatus pudibundus smooth 4 6 4 6,1

LEUCOSIIDAE
Persephona mediterranea mid- and postero- 0 0 0,3 11
dorsal spines
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