Demanietta manii (Rathbun, 1904)

Brandis, Dirk, 2002, On the taxonomic status and biogeography of the Isolapotamidae Bott, 1970 (Decapoda, Brachyura), Journal of Natural History 36 (11), pp. 1291-1339 : 1308

Demanietta manii (Rathbun, 1904)

(gure 7a–c)

Potamon (Potamon) manii Rathbun, 1904: 276 , gure 15, pl. 11, gure 6.

Potamiscus (Demanietta) tenasserimensis manii: Bott, 1966: 489 , gure 24, pl. 19, gure 7.

Ranguna (Demanietta) tenasserimensis manii: Bott, 1970b: 174 , pl. 39, gure 48; pl. 49, gure 44.

Demanietta manii: Yeo et al., 1999: 533 , gures 1, 2A–F, 6A, B, 8A, 9A.

HOLOTYPE. One ( MNHN 3602-82 ) Thailand, Bangkok, leg. Harmand.

Diagnosis. Carapace appearing punctuated, slightly rounded; anterolateral margins well developed, cervical grooves deep, leading to lateral ends of postorbital margins. Postorbital margins sharp; without any separation, nearly connected with postfronta l lobes. Pleon elongately triangular, lateral margins straight. First gonopod elongated, terminal joint slightly curved outwards, ending in sharp tip, overlapping margin projecting, projecting margin rounded, reaching lateral margin of terminal joint proximally; exible zone distinctly elongated, slightly bilobed.

Distribution. Presently known only from type locality.

Type locality. Bangkok.

Measurements. 48.2: 35.2: 20.6: 7.4 (holotype).

Remarks. Recently many species closely related to D. manii have been described by Yeo et al. (1999), all showing a similar gonopod morphology. According to Yeo et al. (1999) D. manii is presently only known from Bangkok. As the authors mention it is very doubtful that this specimen really was collected in the vicinity of Bangkok. Due to the high similarity between D. manii and the new species described by Yeo et al. (1999) and the unclear type locality of D. manii the status of this species remains unclear and thus will not be discussed in the present paper.