Gonatocerus tuberculifemur (Ogloblin)

Triapitsyn, Serguei V., Logarzo, Guillermo A., De León, Jesse H. & Virla, Eduardo G., 2008, A new Gonatocerus (Hymenoptera: Mymaridae) from Argentina, with taxonomic notes and molecular data on the G. tuberculifemur species complex, Zootaxa 1949 (1), pp. 1-29 : 19-20

Gonatocerus tuberculifemur (Ogloblin)

( Fig. 26 )

Lymaenon tuberculifemur Ogloblin 1957: 38–39 , 42 [illustrations: Figs 114–116, second unnumbered plate page] (holotype female [MLPA], labeled [in pencil]: 1. “ Lymaenon tuberculifemur Ogl. female 18.III–55 PUCARÁ [the label is framed in purple pencil]”; 2. “Pucará tuberculifemur n. sp. ” [followed by several abbreviated, illegible words and a drawing in pencil; the label data are written on a piece of paper with an unrelated imprint “STABEL Botánica”] (examined).

Gonatocerus (Gonatocerus) tuberculifemur (Ogloblin) : De Santis 1967: 105.

Gonatocerus tuberculifemur (Ogloblin) : Yoshimoto 1990: 41; Triapitsyn 2007: 59; de León et al. 2007: 73–75 (as “Clade X”).

Type locality. Pucará , at Lago Lácar, Neuquén, Argentina .

Material examined. ARGENTINA. Buenos Aires: Hurlingham: USDA, ARS SABCL, F1 progeny on Tapajosa rubromarginata (Signoret) eggs, iv.2007, G. Logarzo (progeny of virgin females, originally from: Argentina, Neuquén, Parque Nacional Lanín, Pucará, 40°09’59.3’’S 71°37’50.4’’W, 664 m, ca 400 m off shore of Lago Lácar, G. Logarzo, E. Virla, S. Triapitsyn, emerged 15.iii.2007 from sentinel eggs of T. rubromarginata on a citrus plant exposed near van Heden Nursery during 23.ii–2.iii.2007) [4 males, UCRC]. Neuquén, Parque Nacional Lanín, Pucará, 40°09’59.3’’S 71°37’50.4’’W, 664 m, ca 400 m off shore of Lago Lácar, G. Logarzo, E. Virla, S. Triapitsyn (emerged 15.iii.2007 from sentinel eggs of T. rubromarginata on a citrus plant exposed near van Heden Nursery during 23.ii–2.iii.2007) [4 females, UCRC].

Redescription. FEMALE [holotype ( Fig. 26 ) and non-type specimens]. Body length 1.1–1.4 mm. Head and mesosoma dark brown, gaster brown to dark brown (basal terga a little lighter than apical ones); appendages light brown to brown.

Argentina), female forewing. 26. G. tuberculifemur (female, holotype) .

Antenna with radicle 2.3–2.4 x as long as wide, rest of scape about 3.2 x as long as wide, with strong setae; pedicel longer than F1; all funicular segments longer than wide and densely setose (setae short); F2 longer than F1 and shorter than F3, F4 and F5 subequal in length, F6 as long as F7 and each a little shorter than F5; F8 shorter than F7; F1 and F2 without longitudinal sensilla, longitudinal sensilla on F3 (1 or 2) [unfortunately, poor (uncleared) condition of the specimen does not allow for verification of presence or absence of a longitudinal sensillum on F 3 in the holotype although apparently there is one], F4 (2), F5 (2), F6 (2), F7 (2), and F8 (2); clava with 8 longitudinal sensilla, about 3.7 x as long as wide, its ventral surface covered with numerous minute, short setae and placoid sensilla, its dorsal surface densely covered with longer setae.

Pronotum divided medially, each lobe with 2 strong dorsal and 2 weak lateral setae. Mesoscutum much wider than long, shorter than scutellum; midlobe of mesoscutum with a pair of strong setae. Dorsellum of metanotum with posterior margin widely angulate medially. Propodeum with lateral carinae and slightly curved submedian carinae (not meeting near anterior and meeting at posterior margins of propodeum, almost extending to its anterior margin); the propodeum smooth between submedian carinae but elsewhere with a faint cellulate sculpture. Protibia without conical sensilla.

Forewing 3.3–3.8 x as long as wide; marginal setae short, the longest marginal seta about 1/5 greatest wing width. Forewing disc slightly infuscate throughout, with an indistinct, slightly darker spot behind stigmal vein, bare behind submarginal and marginal veins except for a few setae at apex of marginal vein, remain- der of the disc densely setose. Submarginal vein with 1 macrochaeta and 2 smaller setae, marginal vein with 3 or 4 setae between proximal and distal macrochaetae. Hind wing about 18 x as long as wide, the disc almost hyaline or slightly infumate and mostly bare except for the usual two complete rows of setae along margins and several scattered setae at apex and behind apex of venation.

Gaster almost as long as mesosoma. Petiole about 1.5 x as wide as long, subtrapezoidal. Ovipositor 7/ 10–4/5 length of gaster, not at all or barely exserted beyond its apex. Ovipositor length: mesotibia length ratio 0.9–1.1. Outer plates of ovipositor each with 1 distal seta.

Measurements of the holotype (in µm, as length or length:width). Body 1058; head 160; mesosoma 445; petiole 42; gaster 440; ovipositor 355. Antenna: radicle 40; rest of scape 136; pedicel 66; F1 49; F2 64; F3 76; F4 73; F5 73; F6 67; F7 67; F8 58; clava 191. Forewing 1335:403; longest marginal seta 73. Hind wing 984:55; longest marginal seta 107.

Description. MALE. Body length 1.3–1.4 mm. Similar to female in coloration. Antenna with scape and radicle fused, scape (excluding radicle) about 3.2 x as long as wide; pedicel very small, all flagellomeres much longer than wide and with numerous longitudinal sensilla. Propodeum with submedian carinae almost extending to its anterior margin. Forewing about 3.7 x as long as wide. Apex of apodeme of genital sternite blunt.

Diagnosis. Member of the ater species group; its subgroup placement, however, is unclear: morphologically, it fits better the ater subgroup but molecularly, it clusters with the morrilli subgroup species as other members of the G. tuberculifemur complex do ( de León, Logarzo et al. 2007). Gonatocerus tuberculifemur is most similar to G. deleoni sp. n. and particularly (the male genitalia) to G. sp. near tuberculifemur “Clade 1”, as discussed above in their diagnoses, and also to G. sp. 3 from Argentina, which has a more or less distinct brown, round spot in the widest part of the forewing disc (the widest part of the forewing disc is uniformly infumate in G. tuberculifemur ).

Distribution. Argentina (Neuquén).

Natural hosts. Unknown.

Factitious host. Proconiini : Tapajosa rubromarginata (Signoret) .

Biology. Similar to that of G. sp. near tuberculifemur “Clade 1”, as reported by Virla et al. (2005).

Figures

FIGURES 25, 26. Gonatocerus spp. 25. G.sp. 3 [= Gonatocerus sp. near tuberculifemur “Clade Z”] (Loreto, Misiones,