Gonatocerus (Gahanopsis) pusilus Ogloblin, 1935

Triapitsyn, Serguei V., Huber, John T., Logarzo, Guillermo A., Berezovskiy, Vladimir V. & Aquino, Daniel A., 2010, Review of Gonatocerus (Hymenoptera: Mymaridae) in the Neotropical region, with description of eleven new species, Zootaxa 2456, pp. 1-243 : 90-94

Gonatocerus (Gahanopsis) pusilus Ogloblin, 1935

Figs 168–174 )

Gonatocerus (Gastrogonatocerus) pusilus Ogloblin 1935: 68 –70 + plates (láminas) VI and VII (illustrations). Type locality: Loreto , Misiones, Argentina.

Lymaenon (Gastrogonatocerus) pusillus [sic] ( Ogloblin): Ogloblin 1938a: 105 –106 (an unjustified emendation, description of the male, host record, key); Ogloblin 1959b: 49 (record from Ecuador), 50 (key).

Gonatocerus pusillus [sic] Ogloblin: Costa Lima 1962: 196 (unconfirmed listing for Brazil).

Gonatocerus (Gastrogonatocerus) pusillus [sic] Ogloblin: De Santis & Esquivel 1967: 100 (list); De Santis 1967: 106 (catalog).

Gonatocerus (Gonatocerus) pusillus [sic] Ogloblin: De Santis 1979: 366 (catalog).

Lymaenon pusillus [sic] (Ogloblin): De Santis 1980: 148 (catalog).

Gonatocerus (Gastrogonatocerus) pusilus Ogloblin : Huber 1988: 33 (mentioned as possibly belonging to a new species group).

Gonatocerus pusilus Ogloblin : Yoshimoto 1990: 41 (listed in membraciphagus species group); Loiácono et al. 2005: 17 (type information, incorrectly listed as missing from MLPA); Luft Albarracin et al. 2009: 10 (list; distribution and host association in Argentina).

Type material examined. Holotype female [MLPA] on slide labeled: 1. “ Gonatocerus pusilus [an additional “l” was al ip, to become pusillus ] AO ♀ Loreto, Misiones 8.iii.1933. A. A. O. Typus!!! [ip, apparently al]”; 2. “3863”. The holotype, although uncleared, is in very good condition, perfectly spread out, and mounted dorsoventrally. Paratypes [all MLPA]: 1 ♀ on slide labeled: “ Gonatocerus pusilus [an additional “l” was al ip, to become pusillus ] A. O. ♀ Loreto, Misiones 10.iii.1933. A. A. O. Typus! [the capital “T” was later co by Ogloblin ip, and replaced with “Pa” to indicate paratype status of this specimen]”; 1 ♀ on slide labeled: “ Gonatocerus Gonatocerillus [an apparent emn of Ogloblin for his subgenus Gastrogonatocerus ] pusilus [an additional “l” was al ip, to become pusillus ] A. O. ♀ Loreto, Misiones 2.iii.1934 selva”; 1 ♀ on slide labeled: “ Gonatocerus Gastrogonatocerus pusilus [an additional “l” was al ip, to become pusillus ] A. O. ♀ Loreto, Misiones 22.iii.1935 A. A. O.”; 1 ♀ on slide labeled: “ Gonatocerus Gonatocerillus [an apparent emn of Ogloblin for his subgenus Gastrogonatocerus , co] pusilus [an additional “l” was al, to become pusillus ] A. O ♀ Loreto, Mis. A. O.”; 1 ♀ on slide labeled: “ Gonatocerus Gastrogonatocerus pusilus A. O. ♀ Loreto, Misiones 15.iii.1935. A. A. O.”.

Ogloblin’s G. (Gastrogonatocerus) pusilus was described from an unspecified number of females, among which the holotype was indicated by its collecting date (8.iii.1933); accordingly, the other specimens from the type series are the paratypes (five have been found in his collection in MLPA that were collected or apparently collected prior to 14.xi.1935, the publication date of this species).

Material examined. ARGENTINA. JUJUY, Bella Vista, Piquete, 3–4.v.1951, A.A. Ogloblin [1 ♀, MLPA]. MISIONES: Bernardo de Irigoyen, 24.ii.1962, A.A. Ogloblin [1 ♀, MLPA]. Loreto: 12.ii.1936, A.A. Ogloblin (“Huevos de Entylia gemmata Membrac. Solanum bonariense ”) [1 ♂, MLPA]; 12.ii.1936, A.A. Ogloblin (“Huev.[os] de Membracidae sobre Solan.[um] bonariense ”) [1 ♀, MLPA]; 14.ii.1936, A.A. Ogloblin (“Huevos de Membrac.[idae] Solanum bonariense ”) [1 ♂, MLPA]; 28.i.1937 (“ Kronides cochleata Mimosa sp.”) [1 ♀, MLPA]; 12.ii.1949 [1 ♀, MLPA]; 26.i–20.ii.2001, S.O. Martínez, P. Fidalgo (in Ruinas Jesuíticas) [1 ♀, UCRC]; 16–30.iii.2001, P. Fidalgo [2 ♀, IMLA, UCRC]; 19.iii.2001, P. Fidalgo [2 ♀, UCRC]. Parque Nacional Iguazú, 25.68°S 54.45°W, 200 m, 2–7.xii.2003, B.V. Brown, G. Kung [1 ♀, UCRC]. San Ignacio, Chacra Yabebirí (Yabebiry): 26.ii.1950, A.A. Ogloblin [1 ♀, MLPA]; ii.1950 [1 ♀, MLPA]; iii.1950, A.A. Ogloblin [2 ♀, MLPA]. Santa Ana, 27.34°S 55.53°W, 77 m, 27.iii.2003, J. Munro [1 ♀, UCRC]. SALTA, Departamento de Orán, Río Pescado, 17.v.1955 [1 ♀, MLPA]. BRAZIL. GOIÁS, Campinaçu, 13°51.6’S 48°23.5’W, 20.ii.1996, Serra da Mesa Survey [1 ♀, UCRC]. MINAS GERAIS, Belo Horizonte, Universidade Federal de Minas Gerais campus, 19°52’S 43°58’W, 800 m, x.1996, D. Yanega [1 ♀, UCRC]. ECUADOR. ESMERALDAS, San Mateo, 29.x.1956, J.R. Förster [1 ♀, MLPA]. ORELLANA, Reserva Étnica Waorani, 1 km S of Oncone Gare Camp, 0°39’10’S 76°26’00’’W, 220 m, 9.ii.1999, T.L. Erwin et al. [1 ♀, USNM].

Redescription. FEMALE (holotype, 3 paratypes listed first, and non-type specimens in UCRC).

Body length 595–890 µm. Head brown to dark brown; scape and pedicel light brown, flagellum brown; mesosoma light to dark brown; legs light brown; basal gastral terga light brown, rest of gastral terga brown to dark brown.

Antenna ( Fig. 168 ) with radicle about 0.3x total length of scape, remainder of scape 3.7–3.8x as long as wide; pedicel much longer than F1; funicle 8-segmented; F1–F3 shorter than following funicle segments (F1 the shortest, each following segment usually a little longer than the preceding one except F7 sometimes about as long as F8) and without mps; mps on F4 (1 or 2), F5 (2), F6 (2 or 3), F7 (2 or 3), F8 (3 or 4); clava with 8 mps, 2.6–3.0x as long as wide, about as long as combined length of F7 and F8.

Mesosoma ( Fig. 169 ). Mesoscutum and scutellum with faint sculpture, almost smooth. Forewing ( Fig. 170 ) 3.1–3.7x as long as wide; longest marginal seta 0.38–0.47x maximum wing width; forewing disc notably infumate throughout (less so just behind submarginal vein), bare behind submarginal vein and posterior to cubital row of setae, sparsely setose behind marginal vein anterior to cubital row of setae, leaving a small bare area, and densely setose elsewhere. Hind wing ( Fig. 171 ) 18–20x as long as wide; disc mostly bare except for a row of setae along each margin and a few scattered setae, infumate; longest marginal seta 2.6–2.7x maximum wing width.

Gaster longer than mesosoma; ovipositor long, 2.1–2.8x as long as mesotibia, projecting strongly forward under mesosoma (extending at least to the middle of propodeum, but sometimes to the apex of procoxa), exserted beyond apex of gaster by 0.07–0.1x own length.

Measurements (µm) of the holotype. Total body length: 763; head: 123; mesosoma 271; gaster 363; ovipositor 544. Antenna: radicle 33; rest of scape 76; pedicel 52; F1 20; F2 27; F3 30; F4 47; F5 50; F6 52; F7 57; F8 57; clava 110. Forewing 683:193; longest marginal seta 88. Hind wing 578:31; longest marginal seta 82.

MALE (non-type specimen from Loreto). Body length 836 µm. Similar to female except for normal sexually dimorphic features and the following. Antenna as in Fig. 172 . Dorsellum and propodeum as in Fig. 173 . Forewing ( Fig. 174 ) 3.1x as long as wide, the longest marginal seta about 0.4x maximum wing width; hind wing ( Fig. 174 ) 15x as long as wide.

Diagnosis. Gonatocerus (Gahanopsis) pusilus is characterized by the following unique combination: female antenna ( Fig. 168 ) with funicle 8-segmented, F1–F3 without mps and shorter than following funicle segments, F4–F8 with mps; forewing mostly bare behind marginal vein anterior to cubital row of setae ( Fig. 170 ); and ovipositor projecting forward under the mesosoma at least to the middle of propodeum, but sometimes to the apex of procoxa.

Distribution. NEOTROPICAL: Argentina, Brazil, and Ecuador.

Host. Entylia carinata (Forster) (Membracidae) ( Ogloblin 1938a) [as Entylia gemmata (Germar) ].

Figures

FIGURES 168 – 171. Gonatocerus (Gahanopsis) pusilus ♀ (168 – Loreto, Misiones, Argentina; 169 – 171 – Universidade Federal de Minas Gerais campus, Belo Horizonte, Minas Gerais, Brazil): 168, antenna; 169, mesosoma; 170, forewing; 171, hind wing.

FIGURES 172 – 174. Gonatocerus (Gahanopsis) pusilus ♂ (Loreto, Misiones, Argentina): 172, antenna; 173, dorsellum and propodeum; 174, wings.