Gonatocerus (Gastrogonatocerus) anomocerus Crawford, 1913

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 : 58-60

Gonatocerus (Gastrogonatocerus) anomocerus Crawford, 1913

( Figs 91–99 )

Gonatocerus anomocerus Crawford 1913: 350 . Type locality: Verdant Vale , Trinidad Island , Trinidad and Tobago.

Lymaenon anomocerus (Crawford) : Ogloblin 1953: 5 –6 (records from Misiones, Argentina; redescription) + plates (láminas) I and II (illustrations).

Gonatocerus (Gonatocerus) anomocerus Crawford : De Santis & Esquivel 1967: 99 –100 (list); De Santis 1967: 103 (catalog); De Santis 1979: 365 (catalog).

Gonatocerus anomocerus Crawford : Yoshimoto 1990: 39 (list); Luft Albarracin et al. 2009: 9 (list; distribution and host associations in Argentina).

Type material examined. Lectotype female [USNM], here designated to avoid possible confusion about the status of the type specimens of this species, on slide labeled: 1. “53–15. From eggs of Horiola arcuata Verdant Vale , Trinidad, B.W.I. July 1912 F. W. Urich.”; 2. [red] “ Gonatocerus anomocerus Crfd Type slide Type No. 16043 U.S.N.M.”. The lectotype is the better preserved female on the left in the middle row. The body is mounted at an angle and although uncleared it is in a relatively good condition except the head and gaster detached, F7, F8, and clava of one antenna, and femur, tibia, and tarsus of one middle leg are missing. Paralectotypes: 1 female and 3 males (all somewhat incomplete) on the same slide and under the same coverslip as the lectotype.

Material examined. ARGENTINA. MISIONES, Loreto: iv.1937, [A.A. Ogloblin] (“obtenidos de los desoves de Membracidae sobre las ramas verdes de “laurel negro”, Nectandra ”) [1 ♀, 2 ♂, MLPA]; Ruinas Jesuíticas, 27°20’S 55°31’W, P. Fidalgo: 21–26.viii.2000 [1 ♀, UCRC]; 24.viii.2000 [1 ♀, 1 ♂, UCRC].

Redescription. FEMALE (lectotype, paralectotype, and non-type specimens). Body length 680–950 µm. Head mostly light brown except trabeculae dark brown, and occiput and parts of vertex brown; scape and pedicel light brown, flagellum brown; pronotum and mesoscutum mostly dark brown, mesoscutum, scutellum, axillae, and dorsellum light brown to brown, propodeum brown, mesopleura yellowish to light brown; petiole, basal gastral terga and gastral sterna light brown, middle and apical gastral terga, and external plates of ovipositor brown to dark brown; legs yellowish or light brown.

Antenna ( Figs 91 , 94 ) with radicle 1.6–2.2x as long as wide, about 0.25x total length of scape, rest of scape about 2.3x as long as wide, almost smooth; pedicel longer than combined length of F1 and F2; F1, F2, and F4 subequal, very short (F2 slightly shorter, wider than long) and without mps; F3 and F5–F8 subequal, much longer and wider than F1, F2, or F4 and each with 2 mps; clava with 8 mps, 2.5–2.6x as long as wide, shorter than combined length of F6–F8.

Mesoscutum and scutellum with weak sculpture, propodeum with several faint submedian lines; propodeal spiracle very large. Forewing ( Figs 93 , 95 ) 2.6–2.7x as long as wide; longest marginal seta 0.17–0.2x maximum wing width; disc almost hyaline (with a very faint brownish tinge), almost bare behind submarginal vein, with 2 or 3 irregular rows of setae just behind marginal and stigmal veins, bare just beyond venation, and setose in apical 0.6. Hind wing ( Fig. 96 ) 13–15x as long as wide; disc with a row of setae along each margin and with scattered setae behind and just beyond venation and at apex, hyaline; longest marginal seta 1.6–2.0x maximum wing width.

Petiole strap-like, 4– 5x as wide as long; gaster a little longer than or almost as long as mesosoma; ovipositor short, 1.4–1.6x length of mesotibia, not projecting forward under petiole and propodeum and not exserted beyond apex of gaster; external plate of ovipositor with 1 distal seta.

Measurements (µm) of the lectotype. Head 166; mesosoma 300; gaster 339; ovipositor 294. Antenna: radicle 27; rest of scape 76; pedicel 42; F1 12; F2 11; F3 39; F4 15; F5 41; F6 40; F7 41; F8 41; clava 103. Forewing 707:267; longest marginal seta 52. Hind wing 603:39; longest marginal seta 79.

MALE (paralectotypes and non-type specimen). Body length 665–1080 µm. Similar to female except for normal sexually dimorphic features and the following. Antenna ( Fig. 97 ) with scape plus radicle about 2.7x as long as wide, smooth. Forewing ( Fig. 98 ) 2.7–2.8x as long as wide. Gaster shorter than mesosoma ( Fig. 92 ) in the paralectotypes but a little longer in one of the non-type specimens from Argentina. Genitalia as in Fig. 99 .

Diagnosis. Gonatocerus (Gastrogonatocerus) anomocerus is characterized by the following unique combination: female antenna ( Figs 91 , 94 ) with F1, F2, and F4 very short, without mps, and F3 and F5–F8 longer, subequal, and each with 2 mps; forewing ( Figs 93 , 95 ) with setae just behind the marginal and stigmal veins; and ovipositor short, not exserted beyond apex of the gaster ( Fig. 92 ) and not projecting forward under the petiole and mesosoma.

Distribution. NEOTROPICAL: Argentina, and Trinidad and Tobago.

Hosts. Horiola picta (Coquebert) (Membracidae) ( Crawford 1913) [as Horiola arcuata (Fabricius) ]; also known from eggs of an undetermined species of Membracidae and “jassid eggs” ( Ogloblin 1953).

Figures

FIGURES 91 – 93. Gonatocerus (Gastrogonatocerus) anomocerus (91, 93 – ♀, lectotype; 92 – ♂, paralectotype): 91, antennae; 92, body; 93, forewing.

FIGURES 94 – 96. Gonatocerus (Gastrogonatocerus) anomocerus ♀ (Loreto, Misiones, Argentina): 94, antenna; 95, forewing; 96, hind wing.

FIGURES 97 – 99. Gonatocerus (Gastrogonatocerus) anomocerus ♂ (Loreto, Misiones, Argentina): 97, antenna; 98, wings; 99, genitalia.