Gonatocerus (Cosmocomoidea) rufescens
Creators: name: Triapitsyn, Serguei V.
name: Huber, John T.
name: Logarzo, Guillermo A.
name: Berezovskiy, Vladimir V.
name: Aquino, Daniel A.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Mymaridae
Gonatocerus
Gonatocerus rufescens

description: Gonatocerus (Cosmocomoidea) rufescens (Ashmead, 1904)
(Not included in the key)
(Figs 453–456)
Polynema rufescens Ashmead 1904: 521. Type locality:? Bonito, Pernambuco, Brazil.
Polynema rufescens Ashmead: Girault 1911: 322 –323 (redescription).
Lymaenon rufescens (Ashmead): Ogloblin 1946: 286; De Santis 1980: 148 (catalog).
Gonatocerus rufescens (Ashmead): Yoshimoto 1990: 41 (list).
Acmopolynema rufescens (Ashmead): Yoshimoto 1990: 78 (mistakenly listed in Acmopolynema Ogloblin); Noyes 2003 (incorrectly listed in Acmopolynema).
Type material examined. Holotype male [USNM] on point labeled: 1. “Bnito Prov. Pernmbuco Brazl Feb. 83 ”; 2. “Hym. slide 118”; 3. [red] “♂ Type No. 6595 U.S.N.M.”; 4. [blue] “wing mounted”; 5. “ Polynema rufescens Ashm ♂ Type”; 7. “ Gonatocerus Det. C. M. Yoshimoto ”; 8. “ Gonatocerus ♂ ater group Det. S. V. Triapitsyn 2000 ”. The specimen (Fig. 453) is in poor condition, shriveled, and lacks the four apical flagellomeres of both antennae and one pair of wings; the latter, except for their bases that remain attached to the body, are mounted separately on a slide [USNM] labeled: 1. “Fore and hind wing of Polynema rufescens Ashm. ♂ type.”; 2. “118”.
Redescription. We do not provide a detailed redescription because only the poorly preserved holotype is available.
Diagnosis. Gonatocerus (Cosmocomoidea) rufescens is a member of the ater subgroup of the ater species group. The main distinguishing features of the male holotype are as follows. Body length 1156 µm. Body and appendages (Fig. 453) mostly dark yellow except flagellum dark brown, gaster mostly brown, and metatibia brown. Mesonotum smooth and shining. Propodeum (Fig. 454) with subparallel submedian carinae and lateral carinae, otherwise smooth. Forewing (Fig. 455) without setae behind submarginal and marginal veins, remainder of disc densely setose and with a conspicuous brown band behind and just beyond stigmal vein, slightly infumate elsewhere except for a narrow hyaline band just beyond the brown band, so that the entire apical half of disc or so appears as an inconspicuous, large, brownish band. Hind wing (Fig. 456) disc with a slight brownish tinge, more so at apex.
This appears to be a good species, even though its female is unknown. Its forewing (Fig. 455) is somewhat similar to that of G. (Cosmocomoidea) tuberculifemur (Ogloblin), G. (Cosmocomoidea) deleoni Triapitsyn, Logarzo & Virla, and the related forms from Argentina (Triapitsyn et al. 2008), but all these have dark brown bodies whereas the body of G. rufescens is mostly light brown (Fig. 453). There are also differences in the shape of the submedian carinae on the propodeum, which have more or less straight margins (Fig. 454). Distribution. NEOTROPICAL: Brazil.
Hosts. Unknown.
description: Published as part of 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, pp. 1-243 in Zootaxa 2456 on pages 213-215, DOI: 10.5281/zenodo.894928