(Benedict and Rathbun, 1891)
Zoea [no illustration available]
¥ Number of stages in the zoeal phase: 4.
¥ Morphological characters of first zoea [Table 11 First zoeae of Xanthidae]:
Carapace with medio-dorsal knob.
Carapace with lateral spines.
Abdominal somites without a sharp postero-lateral process.
Antennule with 4 aestetatscs and 1 seta.
Antenna type B (type B).
Maxillule endopod setation: 1, 6.
Maxillule scaphognatite with 4 plumose seate.
Maxillliped 1 basis and endopod setation: 4?; 3, 2, 1, 2, 5.
Maxillliped 2 basis and endopod setation: 3?; 1, 1, 5.
Furcae of telson with smooth surface.
Telson furcae without dorsal, outer, or inner spines.
Megalopa [Hexapanopeus angustifrons]
¥ Number of stages in the megalopal phase: 1.
¥ Morphological characters of megalopa [Table 18 Mgp Xanthidae]:
Rostrum short, deflected ventrally.
Carapace smooth.
Maxillule (mx1) endopod setation: 7.
Maxilla (mx2) endopod setation: 7.
First maxilliped (mxp1) epipod setation: 7.
Third maxilliped (mxp3) epipod setation: ca. 20.
Larval stages described by Costlow and Bookhout, 1966a.
Geographical distribution of adult
Occidental Atlantic: Massachussets to North Carolina, Florida, Gulf of Mexico, The West Indies and Brazil (Pernambuco to Santa Catarina).
Depth range of adult
Intertidal zone - 140 m.