Gastrogonatocerus Ogloblin

Huber, John T., 2015, World reclassification of the Gonatocerus group of genera (Hymenoptera: Mymaridae), Zootaxa 3967 (1), pp. 1-184 : 27-29

Gastrogonatocerus Ogloblin , stat. n. (= membraciphagus species group, of authors)

( Figs 95–107 )

Gonatocerus (Gastrogonatocerus) Ogloblin, 1935: 66 . Triapitsyn et al., 2010: 57 (subgenus under Gonatocerus ), 58 (key to species).

Type species. Gonatocerus (Gastrogonatocerus) membraciphagus Ogloblin by original designation.

Diagnosis. Within Gonatocerini, specimens of Gastrogonatocerus are distinguished by the following combination of features: occiput divided transversely by a curved suture above foramen ( Fig. 99 ); propodeal spiracle huge ( Fig. 102 ); ovipositor extending at least slightly anterior to posterior margin of metasoma ( Fig. 95 ).

Description. FEMALE. Face with narrow, deep subantennal sulci ( Figs 96, 100 ). Vertex with 2 setae between lateral ocelli ( Figs 97, 98 ). Occiput divided into dorsal and ventral portions by a transverse or oblique sulcus ( Fig. 99 ). Mandible with 3 normal teeth ( Fig. 101 ). Pronotum longitudinally divided, the lobes abutting medially ( Fig. 102 ). Dorsellum rhomboidal ( Figs 103, 104 ). Fore wing microtrichia mostly absent behind venation and usually relatively sparse beyond venation, the distance between their bases mostly greater than their length ( Fig. 95 ). Propodeum usually with one to several fine, incomplete longitudinal carinae or wrinkles between submedian carinae ( Fig. 102 ). Propodeal spiracle often huge ( Figs 102, 103 ), much larger than the pronotal spiracle. Ovipositor more or less produced anteriorly under mesosoma ( Figs 105–107 ), sometimes extending to level of head.

MALE. Radicle short, not separated from scape by a line or sulcus. Scape at most about twice as long as pedicel. Propodeal spiracle sometimes much smaller than in female. Genitalia with aedeagal apodemes fused at

junction with aedeagus and much shorter than to almost as long as apodeme of genital sternum (see examples in

Triapitsyn 2010).

Distribution. Gastrogonatocerus species occur in the Western Hemisphere from USA (southern Illinois,

Kansas, Missouri, Tennessee) to Argentina ( Huber 1988; Triapitsyn et al., 2010), except for one, likely introduced,

species in the Hawaiian islands ( Huber & Beardsley 2000).

Hosts and habitat. Membracidae are reported as hosts for three of the eight currently recognized

Gastrogonatocerus species (Triapitsyn et al. 2010), as follows: Horiola picta (Coquebert) [as H. arcuata

(Fabricius)] for G. anomocerus (Crawford) , Kronides incumbens (Germar) [as K. decumbens ] for G. dimorphus

(Ogloblin), and Bolbonota pictipennis Fairemaire for G. membraciphagus (Ogloblin) . The records of ‘fulgorid eggs

on sugarcane’ for G. juvator ( Perkins 1912) and ‘jassid eggs’ for G. anomocerus ( Ogloblin 1953) suggest a wider

host range than just Membracidae . The species have been collected mainly from tropical rain forests but also from

deserts in southwestern USA.

Included species:

Gastrogonatocerus anomocerus (Crawford) , comb. n. from Gonatocerus (Gastrogonatocerus) . Gonatocerus anomocerus Crawford, 1913: 350 ; lectotype ♀ in USNM (examined). Ogloblin, 1953: 5 (transferred to Lymaenon ); De Santis, 1979: 365 (transferred to Gonatocerus s.s.); Triapitsyn et al., 2010: 58 [placement in Gonatocerus (Gastrogonatocerus) ]. TL: Trinidad, Verdant Vale.

Gastrogonatocerus juvator (Perkins) , comb. n. from Gonatocerus (Gastrogonatocerus) . Gonatocerus juvator Perkins, 1912: 23 ; lectotype ♀ in BPBM (examined). Triapitsyn et al., 2010: 60 [placed in Gonatocerus (Gastrogonatocerus) ]. TL: Mexico, Morelos, Cuantla.

Gastrogonatocerus margiscutum (Girault) , comb. n. from Gonatocerus (Gastrogonatocerus) . Gonatocerus margiscutum Girault 1914 [195]: 150; lectotype ♂ in ZMHB. Triapitsyn et al., 2010: 63 [placed in Gonatocerus (Gastrogonatocerus) ]. TL: Paraguay, San Bernardino.

Gastrogonatocerus dimorphus (Ogloblin) . Lymaenon (Gastrogonatocerus) dimorphus Ogloblin, 1938b: 101 ; lectotype ♀ in MLPA (examined). De Santis, in De Santis & Esquivel 1967: 50 [transferred to Gonatocerus (Gastrogonatocerus) ]. TL: Argentina: Misiones, Apóstoles. Synonymy under G. margiscutum by Triapitsyn et al., 2010: 63.

Gastrogonatocerus monrosi (Ogloblin) . Lymaenon (Gastrogonatocerus) monrosi Ogloblin, 1959b: 185 ; holotype ♀ in MLPA (examined). De Santis, 1967: 10, 106 [transferred to Gonatocerus (Gastrogonatocerus) ]. TL: Argentina: Buenos Aires, Bella Vista. Synonymy under G. margiscutum by Triapitsyn et al., 2010: 64.

Gastrogonatocerus membraciphagus (Ogloblin) , comb. n. from Gonatocerus (Gastrogonatocerus) . Gonatocerus (Gastrogonatocerus) membraciphagus Ogloblin, 1935: 65 ; lectotype ♀ in MLPA (examined). TL: Argentina: Misiones, Loreto.

Gastrogonatocerus dorsiniger (Ogloblin) . Lymaenon (Gastrogonatocerus) dorsiniger Ogloblin, 1959a: 48 ; holotype ♀ in MLPA (lost). De Santis, 1979: 12, 365 (transferred to Gonatocerus s. s.); Triapitsyn et al., 2010: 68 [placed in Gonatocerus (Gastrogonatocerus) ]. TL: Ecuador: Esmeraldas, San Mateo. Synonymy under G. membraciphagus by Triapitsyn et al., 2010: 68.

Gastrogonatocerus setulosus (Ogloblin) . Lymaenon (Gastrogonatocerus) setulosus Ogloblin, 1959a: 46 ; holotype ♀ in MLPA. De Santis, 1979: 12, 366 (transferred to Gonatocerus s.s.); Triapitsyn et al., 2010: 68 [placed in Gonatocerus (Gastrogonatocerus) ]. TL: Ecuador: Esmeraldas, San Mateo. Synonymy under G. membraciphagus by Triapitsyn et al., 2010: 68.

Gastrogonatocerus nigriceps (Ogloblin) , comb. n. from Gonatocerus (Gastrogonatocerus) . Lymaenon (Gastrogonatocerus) nigriceps Ogloblin, 1955: 19 ; holotype ♀ in MLPA. De Santis, 1967: 10, 106 [transferred to Gonatocerus (Gastrogonatocerus) ]. TL: Argentina: Jujuy, Bella Vista, Piquete.

Gastrogonatocerus piriformis (Ogloblin) , comb. n. from Gonatocerus (Gastrogonatocerus) . Lymaenon (Gastrogonatocerus) piriformis Ogloblin, 1955: 19 ; holotype ♀ in MLPA (examined). De Santis, 1967: 10, 106 [transferred to Gonatocerus (Gastrogonatocerus) ]. TL: Argentina: Misiones, San Ignacio, Yabebirí.

Gastrogonatocerus spiracularis (Ogloblin) , comb. n. from Gonatocerus (Gastrogonatocerus) . Gonatocerus (Gastrogonatocerus) spiracularis Ogloblin, 1935: 70 ; holotype ♀ in MLPA (examined). TL: Argentina: Misiones, Loreto.

Gastrogonatocerus valentinae (Ogloblin) , comb. n. from Gonatocerus (Gastrogonatocerus) . Lymaenon valentinae Ogloblin, 1959b: 192 ; holotype ♂ in MLPA (examined). De Santis, 1967: 10, 105 (transferred to Gonatocerus ); Triapitsyn et al., 2010: 78 [placed in Gonatocerus (Gastrogonatocerus) ]. TL: Argentina: Misiones, Oberá.

Figures

FIGURE 95. Gastrogonatocerus sp., habitus: USA, Texas, Travis Co., Austin, Zilker Park, 8. x. 1983, J. B. Woolley. Scale bar = 500 Μm.

FIGURES 96 – 101. Gastrogonatocerus sp., head: 96, anterior; 97, dorsal; 98, lateral; 99, posterior; 100, ventral; 101, mouthparts, ventral. Scale bars = 20 Μm.

FIGURES 102 – 107. Gastrogonatocerus sp.: 102, mesosoma, dorsal; 103, mesosoma, lateral; 104, mesosoma, ventral; 105, metasoma, dorsal; 106, metasoma, lateral; 107, metasoma, ventral. Scale bars = 50 Μm.