Rheumatobates probolicornis Polhemus and Manzano, 1992

Examined material. COLOMBIA: VALLE DEL CAUCA: 33 3Ƥ apt., Buenaventura, Mangle Pianguita, 80. XI.2003, P. Camacho leg. (LEUQ). 23 apt., Buenaventura, Mangle, 15.V.2004, Camacho leg. (LEUQ). 1Ƥ apt., Buenaventura, Mangle Bocana, 08.XI.2003, F. Molano leg. (UPTC). 3Ƥ apt., Buenaventura, Pianguita-Canal inundado, 09.XI.2003, F. Molano leg. (UPTC). 33 2Ƥ apt., Buenaventura, Punta Soldado, 14.X.1985, (UPTC).

Color. Head brown, with elongated lateral orange spots. Antennae brown. Pronotum brown, with a trapezoidal orange spot; propleura with orange spots. Thorax in ventral view brown. Mesonotum brown, with orange spots at posterior margin. Metanotum brown. Fore femur yellow, with brown spots at apical region; tibiae and tarsi brown; mid and hind legs pale brown. Abdominal segments dorsally brown; sternites brown.

3 Apterous (Fig. 11 a). Head: total length, 0.42, maximum width, 0.4, interocular distance, 0.38. Length of antennal segments (I–IV): 0.73, 0.08, 0.42, 0.4. Antennal segments modified; antennal segment I narrow at basal 1/ 3, widened distally, with a distal dilate projection at inner margin; antennal segment II visibly the shortest; antennal segment III longer and narrower than preceding; antennal segment IV slightly arched (Fig. 2 g). Rostrum: total length, 0.55. Thorax: pronotum, total length, 0.13. Legs: hind legs unmodified; length of leg segments (femur, tibia, tarsus I, tarsus II,): foreleg: 0.7, 0.25, 0.05, 0.19; femur with row of irregular spines at inner ventrolateral margin; midleg: 1.52, 1.35, 0.57, 0.27; hindleg: 0.69, 0.75, 0.09, 0.19; trochanter elongated and articulate to femur at basal 1/3 of the latter; femur extended anteriorly into a chitinous structure that reaches apical region of coxa (Fig. 11 a). Abdomen: total length, 0.96; tergite VII as long as the sum of two preceding tergites; tergite VIII bent at apical margin, with multiple villi, ventrally with posterior margin concave at central part; pygophore small, simple and oval.

Ƥ Apterous (Fig. 11 b). Head: total length, 0.4, maximum width, 0.39, interocular distance, 0.37. Length of the antennal segments (I–IV): 0.31, 0.08, 0.3, 0.31; antennal segment III with three long setae. Thorax: pronotum, total length: 0.1; posterior margin concave. Legs: length of leg segments (femur, tibia, tarsus I, tarsus II,): foreleg: 0.59, 0.27, 0.05, 0.18; femur with row of 15 to 20 setae in inner margin; midleg: 1.42, 1.19, 0.62, 0.22; hindleg: 0.89, 0.66, 0.09, 0.19. Abdomen: total length, 1.19; connexiva rounded at apex, with short setae; tergite VIII subtriangular, with two long setae on each side; gonocoxae shorter than preceding sternite, wide, slightly directed upward.

Diagnosis. Males of this species are differentiated from other species of the genus because the antennal segment I is narrow at basal 1/3, widened towards apex, with a distal dilated projection at inner margin; the fore femur has a row of ten to eleven irregular spines at inner ventrolateral margin; the hind trochanter is elongated and articulated to femur at basal 1/3 of the latter; the hind femur is anteriorly extended into a chitinous structure that reaches the apical region of the coxae. Females have the connexiva rounded at apex, with short setae; the tergite VIII is subtriangular, with two long setae on each side; the gonocoxa is wide, slightly directed upward.

Distribution in Colombia. This species is recorded only from Colombia, at the departments of Chocó, Valle del Cauca, Cauca and Nariño.