Buenoa analoga, Padilla-Gil, Dora N., 2012

Padilla-Gil, Dora N., 2012, Two new species of Buenoa (Hemiptera: Heteroptera: Notonectidae) from Colombia, with a key to the species in Colombia, Zootaxa 3316, pp. 50-56 : 53

Buenoa analoga sp. n.

Type material. HOLOTYPE, 3, allotype Ƥ: COLOMBIA, Nariño, Tumaco, Finca Mar Agrícola, lake three, Universidad de Nariño, 10 m, 17 November 2010, leg. D. Padilla, ( ICN). PARATYPES, same data as holotype, of these the following have been distributed: 2 3, 3 Ƥ ( ICN), 3 3, 3 Ƥ (PSO-CZ).

Macropterous form. Dimensions. Length 3 7.7, Ƥ 7.86; greatest body width 3 1.64; Ƥ 1.80. Brachypterous form, length 3 7.4, Ƥ 7.2; greatest body width 3 and Ƥ, 1.76. Width of head 3 and Ƥ, 1.44.

Color. Body generally bright white with dark eyes. Abdominal venter black except yellow apex. Abdominal dorsum white with irregular areas of black, apex yellow. Female differs from the male with last abdominal segments yellowish.

Male structural characteristics: As viewed from above, outline of head rounded with anterior margin of vertex continuous with that of eyes. Width of head six times anterior width of vertex (1.44/0.22), smaller than humeral width of pronotum. Synthlipsis two times anterior width of vertex (0.10/0.22); head 2.7 times shorter than that of pronotum along midline. Tylus inflated, with tuft of long setae on each side. Labrum half as long as wide, with tuft of hair, apex truncate. Rostral prong ( Fig. 2a ) longer than third rostral segment, with base originating at distal end of third rostral segment, and with pointed apex. Pronotum tricarinate; lateral margins slightly divergent; posterior margin convex, medially concave; median length 1.3 times width (1.52/1.12). Scutellum short; pronotum 1.27 times median length of scutellum. Fore femur wide, with seven setae at apex ( Fig. 2 b); stridulatory area with 4 ridges ( Fig. 2 c); fore tibia with stridulatory comb consisting of approximately 25 teeth ( Fig. 2 d), with 5 semi-horizontal basal teeth, then another 9 (5 crescents and 4 decreasing teeth), followed by 11 shorter teeth. Three peg-like setae visible on outer surface of tibia at apex, two short and one long ( Fig. 2 e) these with triangular shape, at end of tibia a hook-shape seta. Fore and middle legs with round, dark preapical structure in tarsus II (similar Fig. 1 e). Male genital claspers ( Fig. 2 f). Spine from caudo-sinistral margin curved and very narrow in apical 2/3.

Female structural characteristics: Female tylus lacking tuft; hind femur with 24 spines along posterior margin.

Etymology. analoga , referring to the similarity to B. dactylis .

Ecological notes. B. analoga n. sp. shares the habitat with Notonecta indica Linnaeus , Limnogonus franciscanus Stål , and Trepobates taylori (Kirkaldy) ; this species does not share the habitat with congeners. The habitat is characterized by air temperature 25 ºC, water temperature 27 ºC, pH 6, conductivity 265 S/m. Deep ≥ 1m, there was a great deal of floating vegetation and abundant vegetation around the lake.

Comparative notes. Males of B. analoga are characterized by a tylus with a tuft of long setae on each side; the fore tibia has 3 peg-like setae in a triangle-shaped on the outer surface at the apex ( Fig. 2 e); B. dactylis has them forming a line and located outside of the margin of the fore tibia (compare Figs. 2 e, 1h). Additionally, this species is larger (L/W: 8.0/1.64); the width of the head is five times the width at the anterior end of the vertex (six times in B. analoga ), and the synthlipsis is three times the width at the anterior end of the vertex (two times in B. analoga ).

Figures

FIGURES 2 a − 2 f. Buenoa analoga sp. n. male. 2 a Rostrum in lateral view; 2 b Enlarged view of peg-like setae on apex of fore femur; 2 c Fore leg and comb; 2 d Tibial comb (400 X); 2 e Enlarged view of peg-like setae on outer surface of fore tibia; 2 f Right genital clasper.

FIGURES 1 a − 1 e. Buenoa penta sp. n., male. 1 a Rostrum in lateral view; 1 b Fore leg and comb; 1 c Tibial comb (400 X); 1 d Enlarged view of peg-like setae on outer surface of fore tibia; 1 e Preapical structure of fore tarsus II.