Rheumatobates crassifemur crassifemur Esaki, 1926

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 : 8-10

Rheumatobates crassifemur crassifemur Esaki, 1926

Examined material. COLOMBIA. CAQUETA: 1Ƥ apt., río San Pedro, 1.2005, C. Serrato leg. ( LEUQ). ANTIO- QUIA: 33 apt., Fredonia (1200 m), Quebrada Piedras Verdes, 5.VI.1985, H. Aristizábal leg. (HA). CUNDINA- MARCA: 1Ƥ apt., Chinauta (1200 m), Lago, 3.XII.2005, F. Molano leg. ( LEUQ). QUINDIO: 23 7Ƥ apt., La Tebaida (1100 m), Lago Pesca, 17.VII.2005, F. Molano leg. ( LEUQ). 13 apt., 13 macr., Ulloa-Higuerón (1056 m), Lago, 9.VII.2005, F. Molano leg. ( UPTC). 33 8Ƥ apt., Montenegro, Lago Vereda Guayaquil, 12.VII.2005, Proy. 249 leg. ( UPTC). 23 macr., Quimbaya (1000 m), Lago, 24.IX.2005, SIAUQ leg. ( LEUQ). 33 8Ƥ apt., Alcalá (801 m), 9.VII.2005, F. Molano leg. ( UPTC). 63 18Ƥ apt., Córdoba (1155 m), quebrada, 10.VII.2005, F. Molano leg. ( UPTC). 33 5Ƥ apt., Monte Vida/ San José (1268 m), 8.VII.2005, Semillero leg. ( UPTC). SANTANDER: 13 9Ƥ apt., Barrancabermeja (80 m), Ciénaga San Silvestre, 11.X.1996, H. Aristizábal leg. (HA). 13 4Ƥ apt., Barrancabermeja (80 m), Ciénaga San Silvestre, 11.X.1996, H. Aristizábal leg. ( CIAB). 4Ƥ apt., Sabana de Torres (340 m), Quebrada Payoa, 7.VI.1991, H. Aristizábal leg. ( CIAB). TOLIMA: 13 13Ƥ apt., Espinal (300m), 12.III.2005, F. Molano (LEUQ-GRcc0003). 1Ƥ apt., Ambalema, Laguna La Violanta, 4.IV.2005, C. Serrato leg. ( LEUQ). VALLE DEL CAUCA: 73 21Ƥ apt., Caicedonia (1150 m), Lago, 14.VII.2005, Proy. 249 leg. ( LEUQ). 33 10Ƥ apt., Tulua, Lago artificial, 8.XII.2004, ( LEUQ). 17Ƥ apt., Buenaventura, Estero Santa Clara, 17.V.2004, I. Morales leg. ( LEUQ). 1Ƥ apt., Buenaventura, Laguna, 15.V.2004, F. Molano leg. ( UPTC). 103 8Ƥ apt., Yotoco, Lago, 8.XII.2004, ( UPTC). 2Ƥ apt., Buenaventura, 7.XI.2003, F. Molano leg. ( UPTC). 393 91Ƥ apt., Buga, 6.VII.2004, F. Molano leg. ( LEUQ). BOLIVAR: 113 11Ƥ apt., Arjona (50 m), Caño Correa, 9.VI.1990, H. Aristizábal leg. (HA). CESAR: 13 29Ƥ apt., El Paso, Ciénaga La Pachita, 4.IV.2007, I. Morales leg. ( ICN). 23 4Ƥ apt., 13 macr., El Paso, Ciénaga Mata de palma, 26.X.2006, I. Morales leg. ( ICN). 7Ƥ apt., 13 1Ƥ macr., Chimichagua, Ciénaga Zapatosa, 2.IV.2007, I. Morales leg. ( ICN). 103 14Ƥ apt., Chimichagua, Ciénaga Zapatosa, 22.X.2006, I. Morales leg. ( ICN). 8Ƥ apt., Chimichagua, Ciénaga Zapatosa 34m E.3, 23.X.2006, I. Morales leg. ( ICN). MAGDALENA: 5Ƥ apt., 1Ƥ macr., Chimichagua (25 m), Ciénaga El perro, 17.I.1987, H. Aristizábal leg. ( CIAB).

Color. Head dark brown with a small orange U-shaped spot on posterior margin. Antennal segment I yellow, without pubescence; antennal segment II, III and IV brown with brown pubescence. Pronotum dark brown, with rectangular yellow spot. Thorax in ventral view dark brown. Mesonotum dark brown. Metanotum dark brown. Fore femur yellow, with brown spot in distal region; tibia and tarsus dark brown. Mid legs brown with yellow spot at base. Hind legs brown; trochanter brown, with yellow spot at base. Abdominal segments dark brown; sternites dark brown.

3 Apterous ( Fig. 6 a). Head: total length, 0.43, maximum width, 0.41, interocular distance, 0.37. Length of antennal segments (I–IV): 0.43, 0.07, 0.12, 0.43. Antennal segments modified; segment I slightly thickened medially; segment II short, about as wide as long, with two long ventrolateral setae; segment III thinner and longer than second, with two setae on inner margin; segment IV curved and only slightly widened on apical 2/3, with dorsoapical setae of about same size and a laterobasal elongated projection ( Fig. 2 d). Rostrum: total length, 0.63. Thorax: pronotum, total length, 0.2. Legs: hind legs modified; length of leg segments (femur, tibia, tarsus I, tarsus II,): foreleg: 0.72, 0.27, 0.04, 0.18; femur with row of short setae at inner margin; midleg: 1.91, 2.56, 0.7, 0.45; femur thickened on distal 2/3 and dorsoventrally flattened, with row of short setae in inner margin. Tarsus slightly curved, with row of long setae at basal region; hindleg: 0.72, 1.01, 0.15, 0.25; trochanter widened at base and narrowed toward apex, with tuft of long dense setae at inner margin, which extends in shorter and less dense tuft of setae. Base of femur rounded, with row of long dense setae towards apex ( Fig. 3 d). Abdomen: total length, 1.02; tergite VII longer than preceding tergite; tergite VIII short, widened, slightly curved at apical margin. Pygophore simple, with rounded margin, which is turned downward in lateral view.

Ƥ Apterous ( Fig. 6 b). Head: total length, 0.43, maximum width, 0.41, interocular distance, 0.38. Length of antennal segments (I–IV): 0.3, 0.1, 0.25, 0.35; segment III with four long setae; segment IV longest, with one long seta. Rostrum: total length: 0.57. Thorax: pronotum, total length, 0.13; posterior margin with rounded lateral projections. Legs: length of leg segments (femur, tibia, tarsus I, tarsus II,): foreleg: 0.6, 0.3, 0.05, 0.2; femur with row of ten setae at inner margin and three short erect setae at dorsolateral margin; midleg: 1.83, 2.01, 0.87, 0.42; femur with two short erect setae at dorsobasal region; hindleg: 1.22, 0.83, 0.15, 0.23; femur with three short erect setae at dorsal region. Abdomen: total length, 1.53; anterior margin of metasternum concave ( Fig. 6 c); connexiva acute towards apex; tergite VIII subquadrate, as long as the sum of two preceding tergites; gonocoxae as long as preceding sternite.

3 Macropterous. Head: total length, 0.41, maximum width, 0.37, interocular distance, 0.35. Length of antennal segments (I–IV): 0.36, 0.07, 0.11, 0.42. Rostrum: total length, 0.62. Thorax: pronotum, total length, 0.74; which extends backward, covering totally the mesonotum. Legs and wings: hind legs modified; length of legs segments (femur, tibia, tarsus I, tarsus II,): foreleg: 0.66, 0.26, 0.05, 0.2; midleg: 1.8, 2.27, 0.63, 0.46; hindleg: 0.66, 0.96, 0.15, 0.22; Fore wings: total length, 2.36; these surpass apex of abdomen. Abdomen: total length, 1.09.

Ƥ Macropterous. Head: total length, 0.42, maximum width, 0.4, interocular distance, 0.37. Length of antennal segments (I–IV): 0.37, 0.25, 0.16, 0.23. Rostrum: total length, 0.61. Thorax: pronotum, total length, 0.77; pronotum extending backward, totally covering the mesonotum. Legs and wings: length of leg segments (femur, tibia, tarsus I, tarsus II,): foreleg: 0.53, 0.27, 0.05, 0.18; midleg: 1.72, 1.87, 0.82, 0.38; hindleg: 1.02, 0.79, 0.13, 0.23; Forewings: total length, 2.22; these surpassing apex of abdomen. Abdomen: total length, 1.38.

Diagnosis. Males of this species are differentiated from R. crassifemur esakii because the antennal segment IV only is slightly widened at apical 2/3, with dorsoapical setae of about same size; the hind trochanter has a tuft of long dense setae at the inner margin, which extends in a shorter and less dense tuft of setae; the base of hind femur is rounded. Females have the tergite VIII subquadrate.

Distribution in Colombia. Cesar, Bolívar, Córdoba, Antioquia, Santander, Cundinamarca, Tolima, Quindío, Valle del Cauca and Caquetá (first record).

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 3. Hind legs of male of Rheumatobates. a. R. plumipes n. sp. b. R. imitator. c. R. bergrothi. d. R. crassifemur crassifemur. e. R. crassifemur esakii.

FIGURE 6. Rheumatobates crassifemur crassifemur. a. dorsal view of apterous male. b. dorsal view of apterous female. c. ventral view of apterous female.