Neogyptis crypta Pleijel & Rouse & Sundkvist & Nygren, 2012

Pleijel, Fredrik, Rouse, Greg W., Sundkvist, Tobias & Nygren, Arne, 2012, A partial revision of Gyptis (Gyptini, Ophiodrominae, Hesionidae, Aciculata, Annelida), with descriptions of a new tribe, a new genus and five new species, Zoological Journal of the Linnean Society (Zool. J. Linn. Soc.) 165 (3), pp. 471-494 : 482

NEOGYPTIS CRYPTA ( PLEIJEL, 1993b) COMB. NOV.

Gyptis crypta Pleijel, 1993b: 238–242 , figure 2.

Gyptis vittata Gardiner, 1976: 119 , figure 81; Uebelacker, 1984: 28.29–28.31, figure 28 [not Gyptis vittata Webster & Benedict, 1887 ].

Type material: Holotype ( USNM 52893 ) and 31 paratypes ( USNM 52892–52894 , 45534 , 75478 , 75319 , 157615 ).

Type locality: USA, North Carolina, Wrightsville Beach, Banks Channel , intertidally in burrow of Notomastus lobatus .

Material examined: NORTH CAROLINA. One paratype ( USNM 52892 ), Wrightsville Beach , Banks Channel, intertidal in burrow of N. lobatus , 20.vii.1974 ; holotype ( USNM 52893 ) and five paratypes ( USNM157615 ), same locality, 18.viii.1974 ; five paratypes ( USNM 52894 ), same locality, 27.ii.1975 . FLORIDA. 18 paratypes ( USNM 45534 ), Tampa Bay , 1963 ; one paratype ( USNM 75319 ), off south-west Florida, 24°47.5′N, 82°13.16′W, 24 m, vii.1981 ; MISSISSIPPI. One paratype ( USNM 75478 ), off Mississippi, 30°16.27′N, 88°36.42′W, 3.4 m, 24.x.1980 ).

Description: Length up to 7.5 mm for 39 segments. Live animals opaque with yellowish gut; eyes red. Body outline in dorsal view slightly elliptical, posteriorly tapered. Prostomium rounded rectangular, wider than long. Palpophores cylindrical, palpostyles thinner, tapering to rounded tips; palpophores as long as or slightly longer than palpostyles. Paired antennae tapering, slightly longer than or as long as palps, distal-most third forming well-demarcated tips. Median antenna similar to paired antennae but much shorter, inserted on or just in front of line between anterior pair of eyes. Eyes small, anterior pair larger and positioned slightly further apart. Nuchal organs ciliated bands along lateral sides of prostomium. Lip pads absent. Proboscis smooth, with proximal and distal ring, opening with terminal ring of ten conical papillae. Non-everted proboscis reaching segment 9. Segment 1 dorsally reduced, segments 2 and 3 possibly dorsally fused. Dorsal cirri and cirrophores segment 1–5 much longer and stouter than following ones, with dorsal cirri segment 3 and 4 reaching about segment 10–11. Ventral cirri segment 1–4 with well-delineated cirrophores and longer and stouter cirri than on following segments. Segment 5 with notopodial lobes and notochaetae, and neuropodial lobes and neurochaetae. Transverse dorsal ridges across median and posterior segments. Dorsal cirri reaching as far or slightly further than chaetae. Notopodial aciculary lobes conical. Notochaetae of three kinds; five to ten dorsally bent aciculary chaetae inserted anterior to other chaetae, large number of capillary chaetae with two alternating rows of teeth, and few, ventrally positioned curved chaetae with conical side subdistally serrated. Prechaetal neuropodial lobes elongated conical. Twenty to 40 neurochaetae, all compound and unidentate, with dorsal and median blades up to five times longer than ventral. Usually double noto- and neuroaciculae. Ventral cirri inserted distally near tip of neuropodium, tapering to fine points. Pygidium with long pygidial cirri, longer than dorsal cirri; pygidial papilla absent.

Habitat: Sand and mixed bottoms intertidally to 24 m depth, reported several times from burrows of the polychaete N. lobatus ( Gardiner, 1976; Uebelacker, 1984).

Distribution: North Carolina, Florida, and off Mississippi.

Remarks: The description above is based on Pleijel (1993b), which also includes illustrations of the species. Neogyptis crypta comb. nov. is unique amongst Amphidurini in having both noto- and neuropodial lobes and chaetae starting on segment 5; usually in related taxa the notopodial lobes and notochaetae do not appear until on the following segment.