Mnioes chunka, Ballon-Estacio & Alvarado, 2024

Ballon-Estacio, Ricardo & Alvarado, Mabel, 2024, Three new species of parasitoid wasps of the genus Mnioes Townes, 1946 (Ichneumonidae: Banchinae) in a humid forest in Peru, Zootaxa 5523 (2), pp. 269-283 : 272-274

Mnioes chunka sp. nov.

( Fig. 2 )

Material examined. Holotype: ♀ “ PERÚ: AY. La Mar , Moyabamba 13°04’47”S / 73°31’20”W 1726m 26.ii.2023 M. Alvarado “café sin sombra” T. Malaise 1” ( MUSM).

Paratypes: 2 ♀♀ monoculture of coffee plantation, 29.III.2022, Malaise ; ♂ monoculture of coffee plantation, 13.IV.2022, Malaise // MUSM-HYM 0131 [leg removed, COI obtained] ; ♂ monoculture of coffee plantation, 11.V.2022, Malaise ; ♂ monoculture of coffee plantation, 25.V.2022, Malaise ; ♂ and ♀ monoculture of coffee plantation, 09.VI.2022, Malaise // MUSM-HYM 0317 [leg removed, COI obtained] ; ♂ monoculture of coffee plantation, 16.VIII.2022, Malaise // MUSM-HYM 0251 [leg removed, COI obtained] ; ♂ monoculture of coffee plantation, 11.X.2022, Malaise // MUSM-HYM 0303 [leg removed] ; ♀ monoculture of coffee plantation, 04.II.2023, Malaise ; ♀ monoculture of coffee plantation, 25–27.II.2022, yellow pan trap ; ♀ monoculture of coffee plantation, 25–26.VIII.2022, yellow pan trap ; 5♂♂ and 3 ♀♀ monoculture of coffee plantation, 29.VIII.2022, yellow pan trap ; 10♂♂ and 3 ♀♀ monoculture of coffee plantation, 30.VIII.2022, yellow pan trap ; ♀ monoculture of coffee plantation, 26–28.VIII.2022, pitfall trap ; ♂ monoculture of coffee plantation, 31.VIII.2022, pitfall trap ; 2 ♀♀ shaded-coffee plantation, 07.VII.2022, Malaise ; ♀ shaded-coffee plantation, 29.III.2022, Malaise ; ♂ and ♀ shaded-coffee plantation, 09.VI.2022, Malaise // ♂ MUSM-HYM 0099 [leg removed] ; ♀ shaded-coffee plantation, 07.VII.2022, Malaise // 1♀ MUSM-HYM 0403 [leg removed, COI obtained] ; ♂ shaded-coffee plantation, 15.IX.2022, Malaise // MUSM-HYM 0246 [leg removed, genitalia extracted, COI obtained] ; ♂ shaded-coffee plantation, 09.XI.2022, Malaise // MUSM-HYM 0390 [leg removed, COI obtained] ; ♂ shaded-coffee plantation, 20.XII.2022, Malaise ; ♂ shaded-coffee plantation, 03.I.2023, Malaise ; ♂ and ♀ shaded-coffee plantation, 18.I.2023, Malaise ; ♀ shaded-coffee plantation, 18.II.2023, Malaise ; 2♂♂ and 6 ♀♀ shaded-coffee plantation, 24–25.VIII.2022, yellow pan trap ; 7 ♀♀ shaded-coffee plantation, 25–26.VIII.2022, yellow pan trap ; ♂ and 3 ♀♀ shaded-coffee plantation, 26– 27.VIII.2022, yellow pan trap ; 1 ♀ shaded-coffee plantation, 27–28.VIII.2022, yellow pan trap ; 1 ♀ shaded-coffee plantation, 26–28.VIII.2022, pitfall trap ; 1♀ forest, 06.VIII.2022, Malaise ; 3♀♀ forest, 30.VIII.2022, Malaise ; 1♀ forest, 15.IX.2022, Malaise ; 1♀ forest, 29.IX.2022, Malaise ; 1♀ forest, 11.X.2022, Malaise ; 1♂ and 1♀ forest, 25.X.2022, Malaise // ♂ MUSM-HYM 0403 [leg removed, COI obtained] ; 1♀ forest, 20.XI.2022, Malaise ; 3♀♀ forest, 06.XII.2022, Malaise ; 1♀ forest, 20.XII.2022, Malaise ; 1♀ and 5♂♂ forest, 31.VIII.2022, sweeping ; ♂ Moyabamba , 21.II–02.III.2022, sweeping ; ♀ Moyabamba, 29.II–02.III.2022, sweeping // MUSM-HYM 0018 [leg removed] ; ♀ Moyabamba , 24–31.VIII.2022, sweeping // MUSM-HYM 0028 [leg removed, COI obtained] ; 2♂♂ and ♀ Moyabamba , 29–31.VIII.2022, yellow pan trap [1♂ genitalia extracted] ( MUSM) .

Diagnosis: Mnioes chunka sp. nov. can be distinguished from the female congeners by the following combination of traits: antenna black with a white band, frontal orbit mark off-white between toruli and median ocellus, pronotum black but centrally white, propodeum and mesoscutum entirely black, metasoma predominantly black with posterior margin of tergites I and II and the anterior margin of tergites II and III white, and fore wing weakly infumate with two darkly patches centrally and distally. Among the species with females having darkly infumate patches in the fore wing, M. chunka sp. nov. can be differentiated as the only one with pronotum centrally white and mesocoxa with a white spot dorsally.

Description of the female holotype: Fore wing length 5.6 mm

Head: Face ( Fig. 2C ) granulate-punctate and weakly polished, 0.7× as long as wide; clypeus granulate and with scattered punctures, 2.0× as wide as long; malar space 0.9× as long as basal mandibular width; lateral ocellus separated from compound eye by about 1.1× maximum ocellar diameter; distance between ocelli 0.75× maximum ocellar diameter; scape with truncated section V-shaped; with 41 flagellomeres, ratio of length from second to fourth flagellomeres: 3.5:3.0:3.0, subapical flagellomere 1.1× as long as centrally broad.

Mesosoma: Granulate-punctate and weakly polished ( Fig. 2A ); notaulus vestigial, weakly impressed anteriorly; subalar prominence low and rounded. Propodeum ( Fig. 2E ) granulate-punctate; declivous from anterior margin, centrally between anterior margin and posterior transverse carinae with a median longitudinal concavity; pleural carina present; posterior transverse carina centrally present. Fore wing with vein 1m-cu without ramellus; vein 2m-cu weakly sinuate, with two bullae, with abscissa and with a stub on spurious vein; 2rs-m 1.6× as long as abscissa of M between 2rs-m and 2m-cu. Hind wing with length of abscissa of Cu1 between Cu1 and 1A 0.2× as long as length of vein Cu1 between M and Cu1.

Metasoma: Metasomal tergites ( Figs 2A, 2E ) granulate, matte; tergite I 2.3× as long as posteriorly wide; tergite II 1.3× as long as posteriorly wide; ovipositor sheath 3.1× as long as metathoracic tibia ( Fig. 2A ).

Colour: Head ( Figs 2A, 2C ) black but distal half of clypeus and palpi testaceous, mandibles brown, frontal orbits, between torulus and lateral ocellus, white, antenna black with flagellomeres 8–10 entirely white and flagellomeres 11–13 dorsally white. Mesosoma predominantly black with pronotum centrally, subalar prominence, distal end of coxae, a spot laterally on mid-coxa, and tarsomere 2 and basal end of tarsomere 3 white; scutellum with two spots, tegula and fore leg ventrally brown. Fore wing softly infumate with more darkly infumate patches centrally and apically. Metasomal tergites predominantly black, posterior margin of tergites I –II, anterior margin of tergites II–III and distal margin, centrally, of tergites VI –VII white. Ovipositor sheath dark brown.

Variation of female paratype. Fore wing length 5.3–6.6 mm. They differ from the holotype in the following features: clypeus 1.9–2.0× as wide as long; lateral ocellus separated from compound eye by about 1.0–1.1× maximum ocellar diameter; distance between ocelli 0.75–0.8× maximum ocellar diameter; antenna with 40–45 flagellomeres, ratio of length from second to fourth flagellomeres: 3.2–4.0:3.0–4.3:3.0–4. 3 subapical flagellomere 1.0–1.3× as long as centrally broad; fore wing with vein 1m-cu with one large or two bullae; 2m-cu with or without a spurious vein, and 2rs-m 1.3–2.2× as long as abscissa of M between 2rs-m and 2m-cu; hind wing with length of abscissa of Cu1 between Cu1 and 1A 0.2–0.3× as long as length of vein Cu1 between M and Cu1; tergite I 2.0–2.3× as long as posteriorly wide; ovipositor sheath 3.0–3.3× as long as metatibia. Variation in colouration: Head with variation on the antennomeres forming the white band, some individuals with distal half of flagellomere 7 white, others with only flagellomeres 8–9 or 8–11 entirely white, or with flagellomere 14 and sometimes 15 ventrally white. Scutellum, in some individuals, entirely black; while in others the two spots are continuous with each other. Some individuals with tarsomere 2 (rarely distalmost end of tarsomere 1 and basal end of tarsomere 3) of mid leg, entirely or only ventrally, white.

Male. Fore wing length 4.8–5.8 mm. The male individuals ( Figs 2B, 2D ) differ from the females in the following features: face 0.8× as long as wide; clypeus 1.9–2.1× as wide as long; malar space 0.9–1.0× as long as basal mandibular width; lateral ocellus separated from compound eye by about 1.0–1.1× maximum ocellar diameter; distance between ocelli 0.6–0.9× maximum ocellar diameter; antenna with 41–43 flagellomeres, ratio of length from second to fourth flagellomeres: 3.8–4.0:3.4–4.0:3.2–4.0, subapical flagellomere 1.3–1.7× as long as centrally broad; fore wing with 2rs-m 1.0–2.0× as long as abscissa of M between 2rs-m and 2m-cu; hind wing with length of abscissa of Cu1 between Cu1 and 1A 0.1–0.2× as long as length of vein Cu1 between M and Cu1; tergite I 2.3–2.5× as long as posteriorly wide; tergite II 1.1–1.3× as long as posteriorly wide.

Male (colour): Head ( Fig. 2D ) predominantly black with face, clypeus, mandible, palpi, frontal orbits, scape, and pedicel, ventrally, off-white; frons centrally, vertex, gena, and occiput black; flagellomeres black with flagellomere 11 or 12 apically ventral white, dorsally of flagellomeres 13–17, generally 12–18, and base of flagellomere 18 or 19 ventrally white. Mesosoma ( Fig. 2B ) predominantly black with anterior margin of pronotum, subalar prominence, humeral plate and scutellum, and generally posterior margin of propleuron white or off yellow. Fore and mid legs with coxa and trochanter white or off yellow; femur, tibia, and tarsi testaceous but dorsally brownish. Hind leg with coxa predominantly black with distal end, and a dorsal macula white or off yellow; trochanter and trochantellus black; femur predominantly testaceous with basal and distal end brown; tibia testaceous ventrally, dorsally, and basal and distal end dark brown; tarsomere 1dark brown; tarsomere 2–5 off white (in some individuals infumate). Wings hyaline. Posterior margins of tergites I and II, anterior margin of tergite II, anterior half or third of tergite III, and mid-posterior of tergite VII white.

Comments. This species was found in the three habitats, primary forest, shaded coffee, and unshaded coffee in the survey and throughout the year, showing that its occurrence is not affected by the preservation state of its habitat.

Etymology. The specific epithet “ chunka ” means ten in Quechua language. It is treated as a noun in apposition.

Figures

FIGURE 2. Details of Mnioes chunka sp. nov. (paratypes) A. Habitus of female (scale bar = 1 mm), B. Habitus of male (scale bar = 1mm), C. Facial view of female, D. Facial view of male, E. Propodeum and first two metasomal tergites of female.