Sergio guassutinga ( Rodrigues, 1971 )

Pachelle, Paulo P. G., Anker, Arthur & Bezerra, Luis E. A., 2017, Re-identification of the material of Neocallichirus maryae Karasawa, 2004 from Ceará, northeastern Brazil, with the first record of N. cacahuate Felder & Manning, 1995 in the southwestern Atlantic, Zootaxa 4276 (3), pp. 346-356 : 353

Sergio guassutinga ( Rodrigues, 1971)

( Figs. 6 , 7 )

Callianassa (Callichirus) guassutinga Rodrigues 1971: 204 , figs. 41–60. Sergio guassutinga .— Manning & Lemaitre 1994: 40.

Neocallichirus guassutingus .— Sakai 1999: 90 (part.?).

Neocallichirus maryae .— Pachelle et al. 2016: 30 (part.), fig. 21A, B [not N. maryae Karasawa, 2004 ].

Material examined. Brazil, Ceará: 1 male (cl 20.5 mm), MZUSP 32610 , Icapuí, Praia de Tremembé , sand-mud flat, in burrow, suction pump, coll. P. Pachelle, 12.ii.2014.

Distribution. Western Atlantic: USA (Florida, Louisiana, Texas), Mexico (Tamaulipas), Brazil (Ceará, Paraíba, Pernambuco, Sergipe, Bahia, São Paulo) ( Rodrigues & Shimizu 1998; present study). Sakai’s (1999, 2011) record from the eastern Pacific ( Panama) requires confirmation.

Remarks. Sergio guassutinga is herewith recorded for the first time from Ceará, being previously known from several states along the eastern coast of Brazil, from Paraíba to São Paulo ( Rodrigues & Shimizu 1998). The only other species of the genus Sergio Manning & Lemaitre, 1994 known to occur in Ceará is the closely related Sergio guara ( Rodrigues, 1971) ( Fig. 9 ), which differs from S. guassutinga by several features on the first chelipeds and telson ( Rodrigues 1971). The two species may occur syntopically, for instance, on sand-mud flats at Icapuí.

In the field, S. guassutinga can be also confused with species of Neocallichirus , e.g. N. maryae and N. cacahuate ( Pachelle et al. 2016) . However, S. guassutinga differs from both N. maryae and N. cacahuate by the shape and armature of the major first cheliped (cf. Figs. 1 C, 5A, 6C), the shape of the posterior margin of the telson (cf. Figs. 2 A, 4D, 7A) and the position and margin setation of the dorsal plate of the uropodal exopod (cf. Figs. 2 C, 4F, 7C).

Figures

FIGURE 1. Neocallichirus maryae Karasawa, 2004: male (cl 8.0 mm) from Paracuru, Ceará, Brazil (LIMCE-UFC 515), A, dorsal view; B, lateral view; C, left (major) first cheliped, lateral view. Scale bars: 4 mm.

FIGURE 2. Neocallichirus maryae Karasawa, 2004: male (cl 17.8 mm) from Icapuí, Ceará, Brazil (MZUSP 34939), A, telson, dorsal view; B, same, detail of posterolateral margin; C, right uropod, dorsal view. Scale bars as indicated.

FIGURE 6. Sergio guassutinga (Rodrigues, 1971): male (cl 20.5 mm) from Icapuí, Ceará, Brazil (MZUSP 32610), A, dorsal view; B, lateral view; C, left (major) first cheliped, lateral view. Scale bars: 8 mm.

FIGURE 7. Sergio guassutinga (Rodrigues, 1971) (C, D): male (cl 20.5 mm) from Icapuí, Ceará, Brazil (MZUSP 32610), A, telson, dorsal view; B, same, detail of posterolateral margin; C, right uropod, dorsal view. Scale bars as indicated.

FIGURE 9. Sergio guara (Rodrigues, 1971): male (cl 10.5 mm) from Icapuí, Ceará, Brazil (MZUSP 35380), A, dorsal view; B, lateral view; C, first chelipeds, right lateral view; D, major first cheliped, left lateral view. Scale bars: 10 mm.