Gonatocerus (Gahanopsis) aethalionis (Ogloblin, 1938)

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 : 83-86

Gonatocerus (Gahanopsis) aethalionis (Ogloblin, 1938)

( Figs 153–157 )

Lymaenon (Gastrogonatocerus) aethalionis Ogloblin 1938a: 93 –97, 99, 103 (illustrations), 106 (key). Type locality: Loreto , Misiones, Argentina.

Lymaenon (Gastrogonatocerus) aethalionis Ogloblin: Ogloblin 1938b : 29 (mentioned); Costa Lima 1942: 61 –62.

Gonatocerus aethalionis (Ogloblin) : Costa Lima 1962: 196; Huber 1988: 33 (mentioned as possibly belonging to a new species group); Yoshimoto 1990: 39 (listed in membraciphagus species group); Luft Albarracin et al. 2009: 8 (list; distribution and host association in Argentina).

Gonatocerus (Gastrogonatocerus) aethalionis (Ogloblin) : De Santis & Esquivel 1967: 100 (list); De Santis 1967: 105 (catalog).

Lymaenon aethalionis Ogloblin : De Santis 1980: 148 (catalog); Loiácono et al. 2005: 12 (type information).

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. “ Gastrogonatocerus aethalionis [ip, inconspicuous, apparently al] tridentatus [emn] A. O. ♀ Huevos. de M. reticulatum Aetalion [inconspicuous, apparently al ip] Membr. Hom. 22.ii 1936. Loreto Mis A. A. O. Tipo! [in different ink, apparently al]”; 2. “3849”; 3. [red circle] “lectotype”. The lectotype, although uncleared, is in good condition, perfectly spread out, and mounted dorsoventrally. Paralectotypes [all MLPA]: 1 ♂ on slide labeled: 1. “ Gastrogonatocerus aethalioni [emn] A. A. O. ♂ Loreto Misiones 18.ii.1935. Huevos de Aethalion reticulatum Laurel Negro. 2 [ip]”, 2. “3962”; 6 ♀, 1 ♂ on slide labeled: “ Lymaenon Gastrogonatocerus aethalioni A. O. Loreto, Misiones. 12.ii.1936. A. reticulatum KOH.”; 3 ♀ on slide labeled: “ Lymaenon Gastrogonatocerus aethalioni A. O. Loreto, Misiones 18.ii.1936. Aeth. reticulatum ”; 7 ♀, 2 ♂ on slide labeled: “ Lymaenon Gastrogonatocerus aethalioni A. O. Loreto, Misiones 18.ii.1936. K.O.H.”; 4 ♀ on slide labeled: “ Gastrogonatocerus aethalioni A. O. 12.ii.1936. Loreto, Misiones KOH.”; 1 ♂ on slide labeled: “ Lymaenon Gonatocerus [co] Gastrogonatocerus aethalioni A. O. ♂ Loreto. Misiones 1936. Genitalia. KOH”; 4 ♀, 1 ♂ on slide labeled: “ Lymaenon Gastrogonatocerus aethalioni A. O. ♀ Loreto, Misiones. KOH.”; 1 ♂ on slide labeled: “ Gonatocerus Gastrogonatocerus aethalioni A. O. ♂ Loreto, Misiones 20.ii.1936. A. O. Aethalion reticulatum sobre Nectandra .”; 1 ♂ on slide labeled: “ Gonatocerus Gastrogonatocerus aethalioni A. O. ♂ 20.ii.1936 Loreto, Misiones Huevos de Aethalion reticulatum L. sobre Nectandra sp. “ Laurel negro””; 1 ♂ on slide labeled: “ Gastrogonatocerus aethalioni A. O. ♂ Loreto, Misiones 20.ii.1936. Huevos de Aethalion reticulatum L. sobre Nectandra sp. “ Laurel negro”.”; 1 ♀ on slide labeled: “ Gastrogonatocerus aethalioni A. O. ♀ Loreto, Misiones 20.ii.1936. A. O Huevos de Aethalion reticulatum sobre Nectandra sp. “ Laurel Negro”.”; 1 ♀, 1 ♂ on slide labeled: “ Lymaenon Gastrogonatocerus aethalioni A. O. Loreto, Misiones 18.ii.1936. Aeth. reticulatum L.”; 5 ♀, 4 ♂ on slide labeled: “ Lymaenon Gastrogonatocerus aethalioni A. O. Loreto, Misiones 18.ii.1936. KOH.”; 2 ♀, 2 ♂ on slide labeled: “ Lymaenon Gastrogonatocerus aethalioni . A. O Loreto, Misiones 14.ii.1936. KOH.”.

Although all the paralectotypes were collected at different (earlier) dates in February 1936 than the date indicated in the original description of this species (22.ii.1936, which only matches the collection date of the lectotype), it is obvious that all of them belonged to the original syntype series of Lymaenon (Gastrogonatocerus) aethalionis because Ogloblin was often not too precise in indicating the collection dates and sometimes even the number of specimens (as in this case) in his publications. For that reason, we consider all the abovementioned specimens to be part of the original syntype series and they are here designated as paralectotypes, even though their number is greater than the number of the specimens in the type series (12 females and 5 males) indicated in the original description. It is impossible to determine which specimens among them were the ones he mentioned.

Redescription. FEMALE (lectotype). For coloration, see Ogloblin (1938a).

Antenna ( Fig. 154 ) with radicle about 0.25x total length of scape; pedicel longer than F1; funicle 8-segmented; F1 and F2 a little shorter than following funicle segments (F1 the shortest and F5 the longest), without mps; mps on F3 (0 or 1 [or 2, according to original description], F4 (2), F5 (2), F6 (2), F7 (2 or 3), F8 (3 or 4); clava with at least 12 (apparently with 13, possibly as many as 14) mps, 3.7x as long as wide, a little longer than combined length of F6–F8.

Mesosoma ( Fig. 155 ). Mesoscutum and scutellum with weak sculpture; propodeum short. Forewing ( Fig. 153 ) 3.0x as long as wide; longest marginal seta about 0.14x maximum wing width; forewing disc slightly infumate, bare behind submarginal vein but setose behind marginal vein anterior to cubital row of setae and elsewhere. Hind wing ( Fig. 153 ) about 12x as long as wide; disc setose (less so behind venation), slightly infumate; longest marginal seta 1.0–1.1x maximum wing width.

Gaster much longer than mesosoma; ovipositor long, 3.0x as long as mesotibia, projecting strongly forward under mesosoma (extending to about apex of procoxa), exserted beyond apex of gaster by about 0.2x own length.

Measurements (µm) of the lectotype. Total body length: 1340; head: 105; mesosoma 486; gaster 713; ovipositor 1144. Antenna: radicle 39; rest of scape 118; pedicel 70; F1 45; F2 51; F3 57; F4 58; F5 66; F6 61; F7 62; F8 61; clava 215. Forewing 1353:449; longest marginal seta 67. Hind wing 1107:95; longest marginal seta 100.

MALE. Body length 1464 µm (measured from the first paralectotype listed above). Similar to female except for normal sexually dimorphic features and the following. Antenna as in Fig. 156 . Forewing ( Fig. 157 ) 2.9x as long as wide. Gaster with darker transverse stripes on terga.

Diagnosis. Gonatocerus (Gahanopsis) aethalionis is characterized by the following unique combination: female antenna ( Fig. 154 ) with funicle 8-segmented, F3 with or without mps, F4–F8 with mps; forewing setose behind marginal vein anterior to cubital row of setae ( Fig. 153 ); and ovipositor projecting forward under the mesosoma to about apex of procoxa ( Fig. 155 ).

Distribution. NEOTROPICAL: Argentina, and Brazil ( Costa Lima 1942).

Hosts. Aetalion reticulatum (Linnaeus) (Aetalionidae) ( Ogloblin 1938a) [as Aethalion reticulatum ], and Campylenchia hastata (Fabricius) (Membracidae) ( Costa Lima 1942).

Figures

FIGURES 153 – 155. Gonatocerus (Gahanopsis) aethalionis ♀ (lectotype): 153, wings; 154, antenna; 155, body.

FIGURES 156, 157. Gonatocerus (Gahanopsis) aethalionis ♂ (paralectotype): 156, antenna; 157, wings.