Mnioes huk Alvarado 2020

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 : 277-278

Mnioes huk Alvarado 2020

( Fig. 4 )

Material examined. Holotype: ♀ “ PERÚ: PA. Villa Rica, Z.A. del Bosque San Matías San Carlos 75º12’37”W / 10º38’44”S 1596m 06-10.viii.2012 FIT P. Sánchez & E. Rázuri ” ( MUSM) . Paratype: 1♀, similar to holotype ( MUSM) . Non-type material: 2 ♀♀ forest, 13.IV.2022, Malaise // 1 ♀ MUSM-HYM 0197 [leg removed, COI obtained]; 2 ♀♀ forest, 27.IV.2022, Malaise // 1 ♀ MUSM-HYM 0093 [leg removed, COI obtained]; ♂ forest, 09.VI.2022, Malaise // MUSM-HYM 0295 [leg removed]; ♀ shaded-coffee plantation, 07.VII.2022, Malaise // MUSM-HYM 0205 [leg removed]; ♀ monoculture of coffee plantation, 22.VI.2022, Malaise ( MUSM).

Diagnosis. Mnioes huk can be distinguished from the female congeners by the following combination of traits: facial orbit light yellow, flagellomeres 7 or 8 to 15–17 light yellow, mesoscutum and tegula black, wings evenly infuscate, and ovipositor sheath 2.8× as long as metatibia. The male individual of this species can be distinguished from the male congeners by antenna with flagellomeres entirely black (vs. with a white or yellow band).

Description of the male. Fore wing length 9.6 mm.

Head: Face ( Fig. 4C ) granulate-punctate and weakly polished, 0.9× as long as wide; clypeus granulate with scattered punctures, 1.9× as wide as long; malar space 0.3× as long as basal mandibular width; lateral ocellus separated from compound eye by about 1.2× maximum ocellar diameter; distance between ocelli 1.1× maximum ocellar diameter; scape with truncated section V-shaped, with 53 flagellomeres, ratio of length from second to fourth flagellomeres: 3.5:3.3:3.1, subapical flagellomere 1.6× as long as centrally broad.

Mesosoma: Granulate-punctate and weakly polished; notaulus vestigial, weakly impressed anteriorly; subalar prominence low and weakly rounded. Propodeum ( Fig. 4B ) granulate-punctate; declivous from anterior margin; pleural carina present; with a weak vestige of posterior transverse carina present centrally. Fore wing with vein 1m-cu with a ramellus; vein 2m-cu weakly sinuate with two bullae, without a spurious vein; 2rs-m 2.5× 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 granulate, matte; tergite I 2.6× as long as posteriorly wide; tergite II 1.8× as long as posteriorly wide.

Colour: Head ( Fig. 4C ) predominantly black with face, clypeus, malar space, mandible, lower half of gena, frontal orbits, scape ventrally and a dorsal apical macula, pedicel ventrally yellow; palpi testaceous; antenna black. Mesosoma ( Figs 4A, 4B ) predominantly black with anterior and lateral margin of pronotum, propleuron, diagonal mark on mesopleuron, mesosternum, subalar protuberance, tegula, humeral plate, metapleuron (except anterior and posterior margins), a central mark on mesoscutum, scutellum, and metanotum yellow. Fore and mid leg testaceous with coxa, trochanter, and tibia dorsally yellow, and tarsomeres 4 and 5 brown. Hind leg with coxa black but anteriorly and a dorsally mark yellow; trochanter, trochantellus, femur ventrally, and tarsomere 1 testaceous; tibia yellow, and femur dorsally and tarsomeres 2–5 black. Wings softly infuscate. Metasoma ( Fig. 4A ) predominantly black but tergite I anterior half and posterior margin, and tergite II with posterior margin yellow.

Comments. There is some variation within the structure of the females, the antenna with 48–53 flagellomeres, and a light-yellow band the flagellomeres 7 or 8 to 15–17. There is more variation within the colour of females, especially in the colour of the legs and metasomal tergites; in large individuals the coxae are entirely black or reddish with black tint; in one individual the mid femur laterodorsally black; in some individuals with metatibia from entirely black, yellow basally grading to black or almost completely yellow but distal end black; in some individuals with tergites entirely orange and in few individuals with tergite II brown.

Although several specimens were sampled for the marker COI, we only succeeded in obtaining sequences of two females and failed to obtain them from the male individual, besides trying two times. Even so, we are confident in assigning the male individual to this species; all the other species treated here are based on morphological and molecular data. As in other species, the male has the anterior margin of pronotum, and meso- and metapleuron with spots, in this case yellow. This species was found in the three habits, principally in the forest between the months of April and July.

Distribution. This species was collected in cloud forest in Ayacucho and Pasco.

Figures

FIGURE 4. Details of male of Mnioes huk (Alvarado 2020) A. Lateral habitus, B. Dorsal view of mesosome, C. Facial view.