Dolichomitus menai Araujo & Padua, 2020

Araujo, Rodrigo O., Padua, Diego G., Jaramillo, Jorge & Mazariegos, Luis A., 2020, Five new species of Dolichomitus Smith from the tropical Andes, with a key for the South American species (Hymenoptera, Ichneumonidae, Pimplinae), ZooKeys 937, pp. 89-113 : 89

Dolichomitus menai Araujo & Padua sp. nov. Fig. 3A-G

Diagnosis.

Dolichomitus menai sp. nov. may be distinguished from other Neotropical species by the combination of the following characteristics: head mostly black with clypeus predominantly dark brown, anterior margin of clypeus, inner orbit, frontal orbit, outer orbit yellow; fore leg mostly black with ventral surfaces of femur and tibiae yellow; wings iridescent rainbow colors with strongly contrasting subapical darkened area, pterostigma black; areolet not petiolated; malar space 0.55 × as long as basal mandibular width; areolet ca. 1.80 × as wide as height; fore wing with vein 1cu-a vertical; hind wing with proximal abscissa of CU slightly inclivous and straight; metasoma mostly black, with posterior membranous section of first metasomal sternite, sternites II-VI and part of sternite VII white; ovipositor sheath ca. 1.25 × as long as body, and ca. 3.60 × as long as hind tibia.

Description.

Holotype female (Fig. 3A-G ). Approximate body length (without ovipositor): 12.50 mm; fore wing length: 12.30 mm.

Head. Antenna with 31 flagellomeres, first flagellomere 4.50 × as long as width. Gena smooth with setiferous punctures, in dorsal view somewhat rounded, 0.60 × as long as eye, in frontal view almost straight and moderately constricted below eyes (Fig. 3C ). Vertex smooth and shiny, with very isolated setiferous punctures. Posterior ocellus separated from eye 1.05 × its maximum diameter. Distance between hind ocelli 0.65 × maximum diameter of posterior ocellus. Face with fine, setiferous punctures. Clypeal sulcus slightly curved. Clypeus 2.70 × as broad as medially long, almost flat. Clypeus with long parallels setae on its surface and small setae across all its margins. Anterior tentorial pits conspicuous. Malar space 0.55 × as long as basal mandibular width. Mandible bidentate, 2.25 × as long as basal width (Fig. 3C ).

Mesosoma. Pronotum polished, with fine and scattered setiferous punctures (Fig. 3D ). Epomia present. Mesoscutum shiny, with moderately dense setiferous punctures. Notauli deep, reaching ca. 0.20 of length of mesoscutum. Mesopleuron shiny, with relatively dense setiferous punctures. Epicnemial carina strong. Metapleuron shiny, with scattered setiferous punctures, ca. 1.40 × as long as height. Submetapleural carina strong, enlarged anteriorly, reaching ca. 0.55 of metapleuron length, its anterior end slightly curved up. Propodeum shiny, with fine and scattered setiferous punctures, denser anteriorly, in dorsal view 1.25 × as long as medially wide. Propodeal spiracle elliptic, just above the pleural carina. Pleural carina strong, culminating posteriorly in a small propodeal crest. Hind leg with femur ca. 7.90 × as long as height and ca. 0.70 × as long as tibia. Fore wing with vein 1cu-a interstitial to M & Rs; areolet ca. 1.80 × as wide as height; vein 1cu-a vertical, vein 2m-cu slight curved. Hind wing with vein M + CU almost straight; vein cu-a ca. 2.50 × as long as proximal abscissa of CU; vein cu-a reclivous and straight; proximal abscissa of CU slightly inclivous and straight; distal abscissa of CU present, reaching wing margin (Fig. 3G ).

Metasoma. Tergite I ca. 1.80 × as long as posteriorly wide, shiny, with fine and relatively dense setiferous punctures, more extended laterally (Fig. 3F ); spiracle near its anterior 0.40; dorsolateral carinae of first metasomal tergite weak, present on petiole and postpetiole. Posterior membranous section of first metasomal sternite ca. 0.25 of length of tergite. Tergite II ca. 1.20 × as long as posteriorly wide, shiny, with fine and relatively dense setiferous punctures, more extended laterally and posteriorly; ovipositor slender, evenly down curved at distal 0.20, ca. 4.65 × as long as hind tibia (Fig. 3A ); apex of ovipositor with expanded area of lower valve bearing ca. 11 teeth, the most proximal 2 vertical; ovipositor sheath ca. 1.25 × as long as body, and ca. 3.60 × as long as hind tibia, bearing fine dense hairs which are ca. 1.35 × as long as width of sheath.

Color. Head mostly black with most of clypeus dark brown, anterior margin of clypeus, inner, frontal and outer orbit (but frons, stemmaticum and vertex, black) and temple yellow. Mesosoma entirely black shinning (Fig. 3B ). Fore leg mostly black with ventral surfaces of femur and tibiae yellow. Mid and hind legs entirely black. Wings with iridescent rainbow colors with strongly contrasting apical darkened area that at least covers completely the fourth submarginal cell and third discal cell, pterostigma black (Fig. 3G ). Metasoma mostly black shinning, with posterior membranous section of first metasomal sternite, sternites II-VI and part of sternite VII white (there are some randomly black spots on the sternites II-VII varying between the specimens) (Fig. 3A, B, F ); ovipositor dark brown, darker on tip. Ovipositor sheath black.

Male. Unknown.

Variation. There are some specimens with body length (12.50-19.00 mm) and wing length (12.30-18.50 mm).

Type material.

Holotype. 1 ♀, Colombia, Jardín, Antioquia, El Alto, Mesenia-Paramillo nature reserve (1800m-3000m elevation), 5°29'45.8"N, 75°53'21.3"W, entomological net, 09-III-2019, coll. Mazariegos, L. (UNIANDES). Paratypes. 3 ♀♀, same locality, same collection method, 14-IV-2019, coll. Araujo, R. (UNIANDES); 2 ♀♀, same locality, same collection method, 15-IX-2019, coll. Rendon, U. (UNIANDES).

Distribution.

Colombia.

Etymology.

The specific epithet is in honor of Luis Fernando Mena for his continued support of the Mesenia-Paramillo nature reserve in the acquisition of forested areas for conservation. Mr. Mena is known for his support of important causes and has supported many NGO’s in Colombia that have an important social impact.

Biological note.

Host unknown.

Comments.

Dolichomitus menai sp. nov. is most similar to the D. hypermeces Townes, 1975, D. irritator (Fabricius, 1775) and D. longicauda Smith, 1877 mainly by black color of body. However, this new species differs mainly by having ovipositor sheath <1.50 × as long as body (except D. irritator ) and the fore wing hyaline with strongly contrasting subapical darkened area, pterostigma black (entirely infumate and ovipositor sheath> 3.00 × as long as body in D. longicauda ; yellowish with pterostigma black in D. irritator ; and brown with a broad pale yellowish brown band on apex and ovipositor sheath> 3.00 × as long as body in D. hypermeces ).

Figures

Figure 3. A-G Dolichomitus menai sp. nov. (holotype female): A habitus in lateral view (in vivo) B habitus in dorsal view C head in frontal view D head and mesosoma in lateral view E mesosoma in dorsal view F first tergite in dorsal view G wings. Scale bars: 5.00 mm (A, B); 1.00 mm (C, D, E, F); 2.00 mm (G).