Macrobrachium surinamicum Holthuis, 1948

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 : 33-34

Macrobrachium surinamicum Holthuis, 1948

Fig. 19 A–C

Macrobrachium surinamicum Holthuis, 1948: 24 .

Macrobrachium surinamicum, Holthuis, 1952: 57 .— Rodríguez, 1980: 124.— Rodríguez, 1981: 47.— Rodríguez, 1982: 390.— López & Pereira, 1996: 52.— Melo, 2003: 372.

(For detailed synonymy refer to Holthuis, 1952).

Diagnosis

Rostrum straight with apex directed slightly upward, as long as scaphocerite, upper margin with 13 to 16 teeth, including 3-4 teeth completely post orbital, proximal teeth with less recess between them than distal ones, lower margin 4 to 6 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 distal extreme of carpus or total length of chela. Second pair of pereopods prominent, similar in shape and size, overreaching scaphocerite with total length of carpus; merus slightly shorter than carpus; carpus 0.5 x chela length; palm elongated and cylindrical, more than 5 x as long as wide; fingers thickly pubescent, not gaping when closed, 0.57 x palm length, two prominent teeth on proximal portion of cutting edge of mobile finger, followed by denticles to distal extreme; a prominent tooth on cutting edge of fixed finger, located between mobile finger teeth’s, followed by denticles to distal extreme. The females have small and numerous eggs. The diagnosis is based in ( Holthuis, 1952).

Remarks

We did not find specimens of this species in the museums examined in this study. The only record for Colombia in literature is “from the neighbourhood of Bogotá” and is deposited at United States National Museum at Washington (USNM) ( Holthuis, 1952). This species has only been found in freshwater near the coast, but Bogotá is far away from the coast and at an elevation of 2600 m. Thus, it seems that the Holthuis locality is misreported. The illustrations are taken from Holthuis (1952).

Figures

FIGURE 19. Macrobrachium surinamicum Holthuis, 1948, male, A, anterior part of body, lateral view; B, telson, dorsal view; C, second pereopod, lateral view. Modified from Holthuis (1952).