Alpheus intrinsecus Spence Bate, 1888

(Figure 7A)

Material examined. Petro-UFS—8 (3 F, 2 OF); size range: 2.43 ≤ CL ≤ 8.45 mm; average: CL = 5.65 ± 2.13 mm; CZUFS CRU- 0 0022. Penaeid—31 (9 M, 16 F, 6 OF); size range: 1.05 ≤ CL ≤ 6.26 mm; average: CL = 3.82 ± 1.17 mm; CZUFS CRU- 00341.

Stations. Petro-UFS—3, 4, and 13; Penaeid—1, 2, 3, 4, 6, 8, and 9.

Distribution. Western Atlantic—From Puerto Rico to Brazil (from Piauí to Santa Catarina). Eastern Atlan-tic—from Western Sahara to Gabon (Christoffersen 1998; Almeida et al. 2007 a, b).

Ecological notes. At intertidal zones up to 40 m. In mud, clay, coarse sand, sand, gorgonians, shells, and calcareous algae, also associated to Halodule sp. (Christoffersen 1979, 1998; Almeida et al. 2007 a, b, 2018; Soledade & Almeida 2013).

Remarks. Found in the present study associated with Bryozoa Reteporella sp., from family Phidolopodidae, and with algae banks.

Previous records in Sergipe. None.