Cremnomymar sagittifer (Fidalgo) Triapitsyn, 2024

Triapitsyn, Serguei V., 2024, Review of Cremnomymar species (Hymenoptera: Mymaridae) in mainland South America, with a new generic synonymy, Zootaxa 5463 (1), pp. 25-46 : 33-39

Cremnomymar sagittifer (Fidalgo) , comb. n.

( Figs 23–35 )

Parapolynema sagittifer Fidalgo 1982: 98–101 . Type locality: José C. Paz, Buenos Aires, Argentina. Subsequent references: De Santis 1989: 73 (catalog); Yoshimoto 1990: 67 (list); Fidalgo 1991: 152 (additions to diagnosis, comparison with P. tucumanum , distribution), 155 (illustrations); Loiácono et al. 2005: 15 (type series information); Luft Albarracin et al. 2009: 11 (list), 20–21 (illustrations); Luft Albarracin et al. 2014: 137 (list).

Type material examined. Holotype female and the entire paratype series of both sexes [MLPA, as in Figs 23–24 and 32–33 ], as listed in Fidalgo (1982, p. 101) and Loiácono et al. (2005, p. 15), as well as additional (non-type) material in MLPA listed in Fidalgo (1991, p. 132).

Additional material examined. ARGENTINA. Buenos Aires: Castelar, INTA, 34°36’20’’S 58°40’33’’W, 22 m, 6.xi–6.xii.2006, G.A. Logarzo [1 ♀, UCRC]. Luján , agricultural field at Universidad Nacional de Luján , 34°35’07’’S 59°04’45’’W, 31 m, C.E. Coviella: 17.iii.2005 [1 ♂, UCRC]; 31.iii.2006 [1 ♀, UCRC]; 1.ix.2006 [1 ♀, UCRC]; 20.x.2006 [6 ♀, UCRC]; 2006 (no exact date) [1 ♀, UCRC] .

Diagnosis. In addition to the female features mentioned in the key, C. sagittifer differs from C. fidalgoi , to which it is most similar, in the male having a distinct, complete or almost complete median carina on the propodeum (males of C. fidalgoi without such a carina).

Redescription (type and non-type specimens from Buenos Aires). FEMALE. Body length (dry-mounted specimens, as in Fig. 25 ) 720–790 µm. Head dark brown and the rest of body brown to dark brown except petiole light brown ( Fig. 25 ), gaster often somewhat lighter than mesosoma; scape and pedicel light brown, funicle light brown or brown, and clava dark brown; legs including procoxa mostly light brown. Head ( Fig. 27 ) a little wider than high; face with fine, inconspicuous mesh-like sculpture above toruli. Antenna ( Fig. 26 ) with scape, excluding short radicle (not fused with the rest of scape), 3.1–3.5× as long as wide; pedicel slightly longer than any funicle segment and about 1.8× as long as wide; all funicle segments short, F1 (and sometimes F4 or F5) the shortest and F2 the longest, F6 the widest and without mps; clava 2.2–2.4× as long as wide, a little longer than combined length of the 3 preceding segments, with all mps in apical half. Mesosoma ( Fig. 28 ) 1.4–1.5× as long as wide; pronotum, mesoscutum and scutellum with reticulate mesh-like sculpture; mesoscutum much wider than long, with notauli indistinct; scutellum longer than mesoscutum; propodeum mostly smooth (except for the lateral carinae), without median carina. Fore wing ( Fig. 31 ) 3.0–3.5× as long as wide; marginal + stigmal vein with 2 very short, weak macrochaetae, apical process about as long as marginal + stigmal vein to notably longer than marginal + stigmal vein ( Fig. 29 ); disc with 2 wide transverse bands beyond venation, the proximal band about as wide as the distal one, densely setose beyond venation, the majority of discal setae (those on dark bands) modified; most fringe setae on anterior margin thickened, the basal ones short and subapical and apical ones long while apical ones not as thickened as subapical fringe setae; the longest marginal seta 0.8–0.95× greatest width of wing. Hind wing ( Fig. 31 ) 35–40× as long as wide, with disc slightly infumate (except basally) and sparsely setose beyond venation; the longest marginal seta 10–14× greatest width of wing. Metacoxa smooth. Petiole ( Fig. 30 ) cylindrical, with wrinkles dorsally. Ovipositor 0.8–0.85 length of gaster ( Fig. 30 ), not exserted beyond gastral apex, and 0.85–0.9× length of metatibia.

MALE. Body length (dry-mounted specimen, Fig. 34 ) 660 µm. Similar to female in color except scape and pedicel light brown, and flagellum uniformly brown. Propodeum with a complete or almost complete median carina.

Distribution. Argentina: Buenos Aires ( Fidalgo 1982), and possibly Brazil (I have seen one unidentified female of a Cremnomymar sp. from São Paulo State that is likely C. sagittifer , although no positive identification has been made).

Figures

FIGURES 21–24. 21–22. Cremnomymar nahuelbutae sp. n., female (holotype). 21. Fore wing. 22. Hind wing. 23–24. Cremnomymar sagittifer, female (paratype of Parapolynema sagittifer, José C. Paz, Buenos Aires, Argentina). 23. Slide. 24. Habitus.

FIGURES 25–28. Cremnomymar sagittifer, female (Luján, Buenos Aires, Argentina). 25. Habitus. 26. Antenna. 27. Head, frontal. 28. Mesosoma.

FIGURES 29–31. Cremnomymar sagittifer, female (Luján, Buenos Aires, Argentina). 29. Fore wing base. 30. Metasoma, lateral. 31. Wings.

FIGURES 32–35. Cremnomymar sagittifer, male. 32–33 (paratype of Parapolynema sagittifer, Bella Vista, Buenos Aires, Argentina). 32. Habitus. 33. Slide. 34. Habitus (Luján, Buenos Aires). 35. Genitalia (La Plata, Buenos Aires).