Forrestopius yungas Alvarado, 2021

Alvarado, Mabel & Palacio, Edgard, 2021, Forrestopius Gauld & Sithole, 2002 (Hymenoptera: Ichneumonidae: Metopiinae) in South America, Zootaxa 5040 (2), pp. 265-282 : 279-280

Forrestopius yungas Alvarado sp. nov.

( Figs 9 , 10B )

Holotype. ♀, “ PERU: CU [Cusco], Qosňipata [valley], San Pedro , 13°03’22.5”S / 71°32’55.2”W, 1520 m, vii.2007 - i.2008, Malaise trap, C. Castillo Leg. ” ( MUSM).

Diagnosis. This species can be recognized by the following combination of characters: mandible with two teeth ( Fig. 9C ), antenna with 19 flagellomeres, scape predominantly yellowish brown, face and clypeus forming a continuous surface, pronotum with dorso-posterior corner yellowish brown, and propodeum with lateromedian and lateral longitudinal carinae. It can be differentiated from other species of the genus by having several wrinkles arising from pronotal pit with their upper ends reaching almost the anterior margin ( Fig. 9B ).

Description. Female: Body length 6.9 mm. Fore wing length 5.5 mm.

Head. Face and clypeus forming a continuous surface, 0.9× as long as wide, smooth with punctures with upper half slightly striate ( Fig. 9C ); labrum not exposed when mandibles closed; mandibles with two teeth; malar space 1.0× as long as basal mandibular width; lateral ocellus separated from compound eye by about 1.1× maximum ocellar diameter; distance between ocelli 1.0× maximum ocellar diameter; vertex behind ocellar triangle slightly declivous, occiput concave; gena in lateral view 0.8× as long as compound eye; antenna with 19 flagellomeres, ratio of length from second to fourth flagellomeres: 0.9:0.9:0.9, subapical flagellomere 1.0× as long as centrally broad.

Mesosoma . Pronotum with several wrinkles from pronotal pit, upper end almost reaching to anterior margin ( Fig. 9B ); metapleuron polished with isolated setae, posteroventrally smooth; submetapleural carina scrobiculate, anteriorly expanded into conspicuous triangular lobe. Propodeum with lateromedian longitudinal carina strong, slightly closer to each other anteriorly; lateral longitudinal carina complete; posterior transverse carina present; area superomedia 2.6× as long as wide. Fore wing with vein Cu 1 a between Cu 1 b and 2 m-cu 2.3× as long as Cu 1 between Rs & M and 1 m-cu; 2 rs-m 1.0× as long as abscissa of M between 2 rs-m and 2 m-cu. Hind wing with distal abscissa of M indistinguishable, distal abscissa of Cu 1 and 1 A sclerotized throughout. Outer metatibial spurs 0.8× as long as inner spur.

Metasoma. Tergite I 1.3× as long as posteriorly wide, lateromedian carina extending 0.3× length of tergite; tergite II 1.0× as long as posteriorly wide; laterotergite II 0.1× as wide as long; laterotergite III 0.5× as wide as long, wedge-shaped, mesal edge straight.

Colour. Head extensively black except mouth parts and scape yellowish brown; pedicel and flagellomeres brown. Mesosoma except dorso-posterior corner of pronotum yellowish brown and tegula yellowish; fore and mid legs testaceous, femur ventrally and tibia dorsally off-white; hind leg pale yellow, coxa black gradually changing to brown dorsally, trochanter, trochantellus, basal third of femur, distal 1/3 of tibia and tarsomeres light brown. Metasomal tergites dark brown with soft metallic blue reflection, metasomal tergites II–V distal margin and laterotergites brownish; valvae testaceous.

Male: Unknown

Remarks. This species was collected in a wet forest, in Peru at 1520m ( Fig. 10B ). It occurs in the same locality as F. runasimi sp. nov.

Etymology. The specific epithet yungas is in honor of the Yungas stretch of forest along the eastern slope of the Andes Mountains.

Figures

FIGURE 9. Details of Forrestopius yungas, sp. nov. A. Habitus of female, in lateral view (scale bar = 1 mm) B. Pronotum, in lateral view C. Facial view D. Head in frontolateral view.

FIGURE 10. Geographic distribution of the Forrestopius species