Macrobrachium reyesi Pereira, 1986

Valencia, Diego M. & Campos, Martha R., 2007, Freshwater prawns of the genus Macrobrachium Bate, 1868 (Crustacea: Decapoda: Palaemonidae) of Colombia, Zootaxa 1456, pp. 1-44 : 32-33

Macrobrachium reyesi Pereira, 1986

Fig. 18 A–C

Macrobrachium reyesi Pereira, 1986: 198 .

Material examined

Casanare: Cusiana River, 19 Oct 1995, leg. U. Buitrago, 1 male, 1 ovigerous female, MLS 12.— Between Trinidad and Rondón, Guachiría River, 20 Feb 1974, leg. P. Cala, 9 males, 13 females, 2 ovigerous, ICN- MHN-CR 1806.— Yop a l. Aguazula stream, 30 Nov - 4 Dic 1995, leg. U. Buitrago, 3 males, 1 ovigerous female, MLS 13, 15.— Streams affluent of Meta River, 30 Nov 1995, leg. U. Buitrago, 1 male, 3 females, 1 ovigerous, MLS 14.

Cundinamarca: Medina, La Arenosa creek, 300 m asl, 29 Jul 1986, leg. R. Restrepo, 3 females, ICN- MHN-CR 2202.

Meta: Mesetas, Negro creek, affluent of Duda River, 500 m asl, 8 Feb 1988, leg. P. Cala, 1 ovigerous female, ICN-MHN-CR 2203.

Diagnosis

Rostrum straight, as long as or slightly longer than scaphocerite, upper margin with 7 to 11 teeth, including 2-3 teeth completely post orbital, first proximal tooth separated from the second one by large recess, lower margin with 3 to 5 teeth; carapace smooth; abdomen smooth; telson terminal margin ending in sharp midpoint, flanked by two pairs of spinules, internal pair overreaching midpoint and external pair. First pair of pereopods overreaching scaphocerite with fingers or total length of chelae. Second pair of pereopods elongated, smooth, similar in shape and size, overreaching scaphocerite with 1/2 of carpus; merus as long as carpus, 1.2 x palm length, and shorter than chelae; palm 2.4 to 2.6 x as long as high; fingers not gaping when closed, 1.1 x palm length.

Size. The largest male TL 29.5 mm, CL 8.3 mm; the largest female, TL 38.2 mm, CL 9.6; 6 ovigerous females were examined: TL 29.2 to 38.2 mm, CL 6.8 to 9.6 mm, with large and few number of eggs.

Remarks

These are the first records of Macrobrachium reyesi for Colombia.

Figures

FIGURE 18. Macrobrachium reyesi Pereira, 1986, male, MLS 15: A, anterior part of body, lateral view; B, telson, dorsal view; C, second pereopod, lateral view.