Tretogonia notatifrons Melichar 1926

Dellapé, Gimena, 2016, Description of the female terminalia of twelve species of Proconiini and a key to genera from Argentina (Insecta: Hemiptera: Cicadellidae), Zootaxa 4117 (2), pp. 211-225 : 221

Tretogonia notatifrons Melichar 1926

Diagnosis. Male: pygofer processes, in ventral view, sharp, curved and intertwined at the midline; style rounded apically, with mesoapical process digitiform; aedeagus with a pair of elongated basal processes.

Female terminalia. Abdominal sternite VII, in ventral view ( Fig. 12 ), with lateral margins slightly convergent posteriorly, lateroposterior margins subtriangular, and posterior margin with a median long shallow emargination; surface with scattered microsetae. Pygofer, in lateral view, not produced posteriorly; surface with scattered microsetae and a few macrosetae on posterior and ventral regions. First valvifers, in lateral view, subsquare; with small spiniform processes on ventral region. First ovipositor valvulae, in lateral view, rectilinear beyond basal curvature; dorsal sculptured area formed mostly by linear processes arranged in oblique lines; ventral sculptured area formed mostly by scale-like processes; apex acute ( Fig. 24 ), with denticles on dorsal and ventral margins. Second valvulae, in lateral view, broadened beyond basal curvature; dorsal margin of blade bearing 31 to 33 continuous teeth, each tooth subtriangular with posterior side longer, with denticles on anterior and posterior margins ( Fig. 36 ); ducts extending toward teeth; apex rounded ( Fig. 48 ), with denticles on dorsal and ventral margins; preapical ventral prominence conspicuous. Gonoplacs, in lateral view, with spiniform processes on ventral margin; apex rounded.

Material examined. ARGENTINA. Chaco: 2♂, 17/XI/1897, Venturi col. Santa Fe: Dep. Garay, 3♂ 3♀, XI/ 1942, Viana col.; Dep. Garay, 1♂ 1♀, XII/1942, Viana col. Misiones: 1♂, 25/III/1897, Venturi col.; 1♂, 18/III/ 1897, Venturi col.; 1♂, 3/III/1897, Venturi col.; Posadas, 1♂. Corrientes: Ita Ibaté, 1♂; Paso de la Patria, 2♂; 1♂, 1917, Bianchi col.; San Cosme, 3♂ 3♀, V/1937, Wurth col. ( MACN); 1♂ 2♀, 27/II/1959, Ajmat & Bennasar cols. ( IFML); National Park Mburucuyá, 28°2´12´´S 58°6´34´´W, 2♂, 8/I/2008, Dietrich C.H. col. ( INHS). Misiones: Iguazú, 1♀; San Ignacio, 1♀, 8/XII/1941, Biraben & Bezzi cols. Corrientes: 6♂ 5♀, Trujillo col.; 1♂, 15–30/II/ 1959, Biraben col.; Corrientes, 3♀, 28/XI/1957, Biraben col.; Manantiales, 1♀, 1–10/III/1959, Biraben col. Santa Fe: 1♀. Entre Ríos: La Paz, 1 without abdomen, II/1930. Formosa: 1♂ 8♀, 2/XII/1953, Biraben col.; Las Ocas, El Refugio, 1♂, 19/I/1939, Denier col.; 1♀, II/1936, Viana col. Chaco: Sáenz Peña, 1♂, 2/XII/1953, Biraben col.; Sáenz Peña, 3♀, Mallo col.; Resistencia, 2♂ 2♀, 20/I/1953, Morinigo col.; Resistencia, 1♀, Biraben & Bezzi cols.; Puerto Barranqueras, 8♂ 11♀, 2/XII/1939, Biraben & Bezzi cols.; Estancia Anello Zapallar, 2♂ 1♀, 10–15/III/ 1959, Biraben col.; National Park Chaco, 26°48´50´´S 59°36´52´´W, 1♂, 10/I/2008, Dietrich C.H. col. Formosa: Route 11 km 1020, 7♂ 2♀, 12/XII/2008, Logarzo & Palottini cols. Entre Ríos: Concordia, 1♀, 16/VIII/2011, water trap in blueberry orchards, Bouvet J.P.R. col.; Concordia, 1♂ 1♀, IX/2008, yellow sticky traps on citrus orchards, Bouvet J.P.R. col. Buenos Aires: Berisso, 1♀, IV/2008, Alvarez L. col. ( MLP).

Distribution. Ecuador, French Guiana, Suriname, Brazil, Bolivia, Paraguay and Argentina ( Young 1968): Misiones, Corrientes, Entre Ríos, Chaco, Formosa, Córdoba, Santa Fe, Buenos Aires ( Remes Lenicov & Tesón 1985, Paradell et al. 2012).

Remarks. The studied species of Tretogonia can be separated by the morphology of abdominal sternite VII and teeth of the second ovipositor valvulae. In T. dentalis the lateroposterior margins of the sternite VII are triangular and the teeth on the second valvulae are subtriangular; while in T. cribata the lateroposterior margins are square and the teeth on the second valvulae are subtriangular with the posterior side longer. This latter character is also present in T. bergi and T. notatifrons , but these species have the lateroposterior margins of sternite VII subtriangular. Tretogonia bergi and T. notatifrons are very similar to each other; the male specimens can be easily distinguished by characters of the pygofer and styles, while the female specimens can be distinguished by the number of teeth on second ovipositor valvulae: T. bergi has 28 to 30 teeth whereas T. notatifrons has more than 31 teeth.

Figures

FIGURE 1 – 12. Abdominal sternite VII (ventral view): 1 — Aulacizes basalis, 2 — Aulacizes conspersa, 3 — Aulacizes insistans, 4 — Aulacizes obsoleta, 5 — Aulacizes quadripunctata, 6 — Cicciana latreillei, 7 — Pseudometopia amblardii, 8 — Stictoscarta sulcicollis, 9 — Tretogonia bergi, 10 — Tretogonia cribata, 11 — Tretogonia dentalis, 12 — Tretogonia notatifrons. Scale: 1 mm.

FIGURE 13 – 24. First valvulae of ovipositor, apex (lateral view): 13 — Aulacizes basalis, 14 — Aulacizes conspersa, 15 — Aulacizes insistans, 16 — Aulacizes obsoleta, 17 — Aulacizes quadripunctata, 18 — Cicciana latreillei, 19 — Pseudometopia amblardii, 20 — Stictoscarta sulcicollis, 21 — Tretogonia bergi, 22 — Tretogonia cribata, 23 — Tretogonia dentalis, 24 — Tretogonia notatifrons. Scale: 0.1 mm.

FIGURE 25 – 36. Second valvulae of ovipositor, teeth of dorsal margin (lateral view): 25 — Aulacizes basalis, 26 — Aulacizes conspersa, 27 — Aulacizes insistans, 28 — Aulacizes obsoleta, 29 — Aulacizes quadripunctata, 30 — Cicciana latreillei, 31 — Pseudometopia amblardii, 32 — Stictoscarta sulcicollis, 33 — Tretogonia bergi, 34 — Tretogonia cribata, 35 — Tretogonia dentalis, 36 — Tretogonia notatifrons. Scale: 0.1 mm.

FIGURE 37 – 48. Second valvulae of ovipositor, apex (lateral view): 37 — Aulacizes basalis, 38 — Aulacizes conspersa, 39 — Aulacizes insistans, 40 — Aulacizes obsoleta, 41 — Aulacizes quadripunctata, 42 — Cicciana latreillei, 43 — Pseudometopia amblardii, 44 — Stictoscarta sulcicollis, 45 — Tretogonia bergi, 46 — Tretogonia cribata, 47 — Tretogonia dentalis, 48 — Tretogonia notatifrons. Scale: 0.1 mm.