Gonatocerus ( Gonatocerus ) bonaerensis ( Ogloblin, 1939 )

Gonatocerus ( Gonatocerus) bonaerensis ( Ogloblin, 1939) View in CoL

( Figs 17–21 View FIGURES 17, 18 View FIGURES 19 – 21 )

Lymaenon bonaerensis Ogloblin 1939: 246 View in CoL –248 + plate (lámina) V (illustrations). Type locality: José C. Paz, Buenos Aires, Argentina.

Gonatocerus ( Gonatocerus) ogloblini De Santis 1967: 105 (unjustified replacement name for G. bonaerensis Ogloblin not G. bonariensis (Brèthes)) .

Gonatocerus bonarensis [sic] (Ogloblin): Yoshimoto 1990: 39 (list).

Lymaenon bonaerensis Ogloblin View in CoL : Loiácono et al. 2005: 13 ( type information).

Gonatocerus bonaerensis (Ogloblin) View in CoL : Luft Albarracin et al. 2009: 9 (list; distribution in Argentina).

Type material examined. Lectotype female [MLPA], here designated to avoid confusion about the status of the type specimens of this species, on slide labeled: 1. “ Lymaenon bonaerensis A. O. ♀ José C. Paz 24.ii.1939. Cynodon dactylon J. Ch. Typus – fig.”; 2. ‘3841/1”.

The lectotype is in very poor condition, uncleared, mounted dorsoventrally right under a crack in the coverslip ( Fig. 17 View FIGURES 17, 18 ), with the wings, one antenna, and a protarsus detached; the other antenna and one leg are apparently missing. The published collection date of the two female syntypes ( 24.iii.1939) contradicts the collection date on the lectotype slide ( 24.ii.1939). The second specimen ( paralectotype) is not in MLPA and its whereabouts are unknown.

Material examined. ARGENTINA. BUENOS AIRES: Moreno , 34°08’57’’S 58°46’57’’W, 23.iii.2005, C. Coviella [ 1 ♀, UCRC] GoogleMaps . Tigre : 34°23’50’’S 58°34’32’’W, 5 m, G.A. Logarzo: 2–9.xi.2005 [ 1 ♀, UCRC] GoogleMaps ; 23–28.xi.2005 [1 ♀, UCRC]. URUGUAY. RÍO NEGRO, 10 km E of Fray Bentos, Estancia M’Bopicuá , 33°06’S 58°12’W, 3 m, 15–30.xii.2002, S. Peck [ 3 ♀, 2 ♂, CNCI] GoogleMaps . SALTO, Termas de Arapey , 30°56’S 57°32’W, 220 m, 12–28.xii.2002, S. Peck [ 1 ♀, CNCI] GoogleMaps .

Redescription. FEMALE ( lectotype and non-type specimens). Vertex and most of gaster brown to dark brown; rest of head and mesosoma light brown to brown; scape, pedicel, petiole, base of gaster, and legs light brown; flagellum dark brown.

Antenna ( Fig. 19 View FIGURES 19 – 21 ) with radicle about 0.4x total length of scape, rest of scape about 3.3x as long as wide, lightly striate; pedicel longer than F1; F1–F6 narrower than F7 or F8, F2 and F3 subequal, slightly longer than F4, F5, and F6; F1–F6 without mps, F7 and F8 each with 2 mps; clava with 6 mps, 3.9x as long as wide, slightly shorter than combined length of F5–F8.

Mesosoma ( Fig. 20 View FIGURES 19 – 21 ) with dorsellum rhomboidal. Propodeum with 2 submedian carinae hardly visible, as incomplete, very fine lines. Forewing ( Figs 18 View FIGURES 17, 18 , 21 View FIGURES 19 – 21 ) 4.9–5.0x as long as wide; longest marginal seta about 0.6x maximum wing width. Forewing disc slightly infumate throughout, bare behind submarginal vein, sparsely setose (almost bare) between marginal vein and cubital row of setae; remainder of disc densely setose. Hind wing 25–28x as long as wide; disc bare except for rows of setae along margins, slightly infumate apically; longest marginal seta 3.7–3.8x maximum wing width.

Metasoma ( Fig. 20 View FIGURES 19 – 21 ) with petiole short, a little wider than long, trapezoidal. Ovipositor 0.6–0.7x length of gaster, not exserted beyond its apex; ovipositor length: mesotibia length ratio about 1.1:1.

Measurements (µm) of the lectotype. Body: total body length: 984; head 166; mesosoma 351; metasoma 467. Forewing 1015:203; longest marginal seta 115. Hind wing 756:27; longest marginal seta 100.

Description. MALE (previously unknown, 2 non-type specimens from Uruguay). Body length 820–850 µm. Very similar to female except for normal sexually dimorphic features; forewing about 5.3x as long as wide.

Diagnosis. Gonatocerus ( Gonatocerus) bonaerensis is characterized by the female antenna ( Fig. 19 View FIGURES 19 – 21 ) with mps on F7 and F8 only, and a narrow forewing (4.9–5.0x as long as wide). The forewing disc has an elongate bare area between the marginal vein and the cubital row of setae ( Fig. 21 View FIGURES 19 – 21 ).

Distribution. NEOTROPICAL: Argentina, and Uruguay *.

Hosts. Unknown.