Cremnomymar fidalgoi 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 : 28-29

Cremnomymar fidalgoi Triapitsyn , sp. n.

( Figs 1–14 )

? Parapolynema sp. : Huber 2013: 65 (habitus illustration).

Type material. Holotype female [MLPA], on slide labeled as in Fig. 1 : ARGENTINA. Neuquén: Parque Nacional Lanín, Pucará , 40°09’59.3’’S 71°37’50.4’’W, 664 m, ca. 100–200 m off S shore of Lago Lácar , 24.ii.2007, S.V. Triapitsyn, G.A. Logarzo, E.G. Virla, yellow pan trap ( UCRC ENT 163150 ) . Paratypes: ARGENTINA. Neuquén: Parque Nacional Lanín: Lago Hermoso shore, 40°21’36’’S 71°28’19’’W, 1025 m, 26.ii.2007, S.V. Triapitsyn [1 ♀ on point, UCRC ]. Pucará , 40°09’59.3’’S 71°37’50.4’’W, 664 m, ca. 100–200 m off S shore of Lago Lácar , 24.ii.2007, S.V. Triapitsyn [1 male on point, UCRC]. Parque Nacional Nahuel Huapi , Puerto Arrayán, at S shore of Lago Traful , 40°36’57.3’’S 71°32’48.1’’W, 826 m, 26.ii.2007, E.G. Virla, sweeping [1 ♂ on slide, UCRC]. Río Negro: Parque Nacional Nahuel Huapi , Puerto Blest, at Lago Nahuel Huapi shore, 41°01’21’’S 71°49’03’’W, 796 m, 28.ii.2007, S.V. Triapitsyn [1 ♀ on point, UCRC]. CHILE. Araucanía: Parque Nacional Nahuelbuta , 37°49’30’’S 72°58’27’’W, 1170 m, 8–24.ii.2005, UCR Expedition (J.M. Heraty et al.) [1 ♀ on point, UCRC]. Los Lagos: Archipiélago de Chiloé, Isla Grande de Chiloé : “Río Puntra & ruta [route]”, 24.ii.1988, L. Masner, screen sweeping on Nothofagus sp. ( Nothofagaceae ) [1 ♀ on slide, CNC]. Terao (S of Chonchi), 42°43’01’’S 73°38’47’’W, 96 m, 13.ii.2005, UCR Expedition (J.M. Heraty et al.) [1 ♂ on slide, UCRC]. Parque Nacional Puyehue , Antillanca, crater trail, 40°47’07’’S 72°11’29’’W, 1340 m, 17–18.ii.2005, UCR Expedition (J.M. Heraty et al.), yellow pan trap [1 ♀ on point, UCRC]. Magallanes and Chilean Antarctica: Fuerte Bulnes (30 km S of Punta Arenas), 4.ii.1990, T. Cekalovic [1 ♀ on slide, UCDC] .

Diagnosis. In addition to the female characteristics mentioned in the key, C. fidalgoi differs from C. sagittifer , the most similar species, in the male lacking a distinct median carina on the propodeum (males with a distinct such carina in C. sagittifer ).

Description. FEMALE (holotype [not photographed prior to slide-mounting]). Body dark brown except petiole brown; scape and pedicel light brown, F1–F5 brown, F6 and clava dark brown; legs light brown to brown (procoxa brown). Head wider than high; face with fine, inconspicuous mesh-like sculpture above toruli (as in Fig. 7 ). Antenna ( Fig. 2 ) with scape, excluding short radicle (not fused with the rest of scape), 3.4× as long as wide; pedicel longer than any funicle segment and 1.5× as long as wide; F1 the shortest and F2 the longest funicle segments, F6 the widest funicle segment, all funicle segments short, their length to width ratios as follows: F1: 1.7, F2: 2.8; F3: 2.6; F4: 2.0; F5: 1.6; F6: 2.0; F6 without mps; clava 2.4× as long as wide, longer than combined length of the 3 preceding segments, with all mps in apical half. Mesosoma ( Fig. 3 ) about 1.6× as long as wide; pronotum, mesoscutum and scutellum with reticulate mesh-like sculpture; mesoscutum much wider than long, with notauli distinct only anteriorly; scutellum about as long as mesoscutum; propodeum mostly smooth, with median carina almost complete but not touching anterior margin. Fore wing ( Fig. 6 ) 3.5× as long as wide; venation with an apical process about as long as marginal + stigmal vein ( Fig. 5 ); disc with 2 transverse bands beyond venation, the proximal band narrow and the distal one wide, densely setose beyond venation, the majority of discal setae modified; most of fringe setae on anterior margin thickened, the basal ones short and subapical ones long whereas apical ones thin (more or less normal); the longest marginal seta 1.1× greatest width of wing [hind wings lacking in the holotype so are described only for the paratypes]. Metacoxa almost smooth. Petiole ( Fig. 4 ) cylindrical, with wrinkles dorsally. Ovipositor almost 0.8× length of gaster ( Fig. 4 ), not exserted beyond gastral apex, and about 1.0× length of metatibia.

Measurements of the holotype (µm). Mesosoma: 256; petiole: 121; gaster: 303; ovipositor: 233. Scape (excluding radicle): 94; pedicel: 52; F1: 21; F2: 43; F3: 30; F4: 28; F5: 24; F6: 37; clava: 118. Fore wing: 750:215; longest marginal seta: 242.

Variation (paratypes). Body length (dry-mounted specimens, as in Fig. 8 ) 660–730 µm. In slide-mounted specimens, scape, excluding radicle, 3.6–4.1× as long as wide; fore wing 3.2–3.6× as long as wide, the longest marginal seta 0.9–1.15× greatest width of fore wing; hind wing ( Fig. 9 ) 40–43× as long as wide, with disc slightly infumate apically and mostly bare except for admarginal rows of microtrichia, the longest marginal seta 8.7–11.0× greatest width of wing; and ovipositor 0.9–1.0× length of metatibia.

MALE (paratypes). Body length (dry-mounted specimen, Fig. 11 ) 610 µm. Similar to female in color except scape and pedicel light brown, and flagellum uniformly brown. Antenna ( Fig. 10 ) with scape, excluding radicle, 2.7× long as wide, F1 the shortest flagellomere. Fore wing ( Fig. 14 ) 3.9–4.0× as long as wide; the longest marginal seta 1.2–1.3× greatest width of wing; hind wing ( Fig. 14 ) 32–34× as long as wide. Propodeum ( Fig. 12 ) without a median carina. Genitalia ( Fig. 13 ) 106–109 µm long.

Distribution. Argentina and Chile. A dry-mounted female deposited in CNC, whose habitus in lateral view was illustrated in Huber (2013, p. 65, fig. 19), is likely to belong to C. fidalgoi as it has a reticulate scutellum and a narrow proximal dark, transverse band on the fore wing. It was collected at 3200 m in Sorata environs, La Paz, Bolivia ( Huber 2013).

Etymology. This species is named in honor of the late Patricio Fidalgo, fellow fairyfly taxonomist and friend, who is fondly remembered as a very generous and kind person.

Figures

FIGURES 1–6. Cremnomymar fidalgoi sp. n., female (holotype). 1. Slide. 2. Antenna. 3. Mesosoma, dorsal. 4. Metasoma, lateral. 5. Fore wing base. 6. Fore wing.

FIGURES 7–10. Cremnomymar fidalgoi sp. n. (paratypes). 7. Female head, frontal (Fuerte Bulnes, Magallanes and Chilean Antarctica, Chile). 8. Female habitus (Nahuelbuta National Park, Araucanía, Chile). 9. Female hind wing (Río Puntra, Isla Grande de Chiloé, Los Lagos, Chile). 10. Male antenna (Terao, Isla Grande de Chiloé).

FIGURES 11–14. Cremnomymar fidalgoi sp. n., male (paratypes). 11. Habitus (Pucará, Parque Nacional Lanín, Neuquén, Argentina). 12. Mesosoma, dorsal (Puerto Arrayán, Parque Nacional Nahuel Huapi, Neuquén). 13. Genitalia (Puerto Arrayán). 14. Wings (Terao, Isla Grande de Chiloé, Los Lagos, Chile).