Rheumatobates carvalhoi Drake & Harris, 1944

Castro-Vargas, Maria I. & Morales-Castaño, Irina T., 2011, The Rheumatobates Bergroth, 1892 (Hemiptera: Heteroptera: Gerridae) of Colombia, including the description of R. plumipes n. sp. and a key to represented species, Zootaxa 3040, pp. 1-18 : 14-15

Rheumatobates carvalhoi Drake & Harris, 1944

Material examined. COLOMBIA: VALLE DEL CAUCA: 3Ƥ apt., Buenaventura, Mangle Bocana, 5.XI.2004, F. Molano leg. ( LEUQ). 53 apt., Buenaventura, Estero Santa Clara, 17.V.2004, I. Morales leg. ( LEUQ). 43 6Ƥ apt., Buenaventura, 04.XI.2004, F. Molano leg. ( UPTC).

Color. Head brown, with a yellow spot on each side, these being reduced toward the apical region. Antennal segment I yellow, with brown spots and pubescence; antennal segments II, III and IV brown, with pubescence of the same color. Pronotum brown, with subquadrate yellow spot; proacetabula with yellow spots. Thorax in ventral view yellow, with brown spot at middle. Mesonotum brown, with yellow spots at posterior margin. Mesoacetabula brown. Metanotum brown. Fore femur yellow; tibiae and tarsi brown. Mid femur brown, with yellow spots at base; tibiae and tarsi brown; hind legs brown. Abdominal segments dorsally dark brown; sternites dark brown.

3 Apterous ( Fig. 10 a). Head: total length, 0.38, maximum width, 0.36, interocular distance, 0.34. Length of antennal segments (I–IV): 0.47, 0.07, 0.38, 0.37. Antennal segments modified; antennal segment I with base as wide as apex, with inner margin slightly widened and row of long setae. Antennal segment II visibly shorter. Antennal segment III curved basally, with tightly packed elongated setae. Antennal segment IV slightly curved, with short seta at apical region ( Fig. 2 f). Rostrum: total length, 0.53. Thorax: pronotum, total length, 0.15. Legs: hind legs unmodified; length of leg segments (femur, tibia, tarsus I, tarsus II,): foreleg: 0.6, 0.3, 0.05, 0.17; femur with a laterobasal projection at outer margin and row of long setae at inner margin; midleg: 1.56, 1.36, 0.66, 0.27; hindleg: 1.0, 0.72, 0.1, 0.17; trochanter with some tightly packed setae at inner margin. Femur curved, with basal row of long setae. Abdomen: total length, 1.0. Sternites V, VI and VII concave, with tufts of long setae directed to tergite III. Tergite VII as long as the sum of two preceding tergites; tergite VIII long, cylindrical, suboval at apex, ventrally with anterior margin acute and apical margin rounded.

Ƥ Apterous ( Fig. 10 b). Head: total length, 0.38, maximum width, 0.36, interocular distance, 0.35. Length of antennal segments (I–IV): 0.31, 0.08, 0.31, 0.35, antennal segment III longest, with three long setae. Rostrum: total length, 0.57. Thorax: pronotum, total length, 0.1; posterior margin subconcave. Legs: length of leg segments (femur, tibia, tarsus I, tarsus II,): foreleg: 0.62, 0.32, 0.05, 0.17; femur with row of 15 to 20 setae at inner margin; midleg: 1.55, 1.25, 0.61, 0.27; hindleg: 0.86, 0.61, 0.1, 0.2; Abdomen: total length, 1.33; connexiva rounded at apex, with multiple setae; tergite VIII subquadrate, with several setae, as long as the sum of two preceding tergites; gonocoxae shorter than preceding sternite.

Diagnosis. Males of this species are differentiated from R. longisetosus Polhemus and Manzano, 1992 because the fore femur has a laterobasal projection and a row of long setae at inner margin; the sternites V, VI and VII concave, have tufts of long setae directed to tergite III. Females have the connexiva rounded at apex, with multiple setae; the tergite VIII is subquadrate, with several setae, as long as the sum of the two preceding tergites; the gonocoxae are shorter than the preceding sternite.

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

Figures

FIGURE 2. Male antennae of Rheumatobates. a. R. plumipes n. sp. b. R. imitator. c. R. bergrothi. d. R. crassifemur crassifemur. e. R. crassifemur esakii. f. R. carvalhoi. g. R. probolicornis.

FIGURE 10. Rheumatobates carvalhoi. a. dorsal view of apterous male. b. dorsal view of apterous female.