Dolichomitus orejuelai 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 orejuelai Araujo & Padua sp. nov. Fig. 4A-G

Diagnosis.

Dolichomitus orejuelai sp. nov. may be distinguished from other Neotropical species by the combination of the following characteristics: head and mesosoma mostly reddish black; metasoma mostly yellowish brown with anterior half of tergite I dorsally, posterior margin of tergites II-V, a semicircular dorsal spot based on the anterior margin of tergite V, tergites VI-VIII reddish black; face with abundant setiferous punctures; malar space 0.30 × as long as basal mandibular width; mandible bidentate, 1.40 × as long as basal width; hind leg with femur ca. 5.50 × as long as height; wings yellowish, pterostigma light brown; areolet not petiolated; dorsolateral carinae of first metasomal tergite present on petiole and stronger on postpetiole; posterior half of tergite II and tergites III-V densely and strongly punctuate; ovipositor sheath ca. 1.10 × as long as body, and ca. 3.00 × as long as hind tibia.

Description.

Holotype female (Fig. 4A-G ). Approximate body length (without ovipositor): 12.30 mm; fore wing length: 11.15 mm.

Head. Antenna with 32 flagellomeres, first flagellomere 4.50 × as long as width. Gena smooth with setiferous punctures, in dorsal view somewhat rounded, 0.55 × as long as eye (Fig. 4E ), in frontal view almost straight and moderately constricted below eyes (Fig. 4C ). Vertex smooth and shiny, with setiferous punctures. Posterior ocellus separated from eye 1.30 × its maximum diameter. Distance between hind ocelli 0.85 × maximum diameter of posterior ocellus. Occipital carina complete. Face with abundant setiferous punctures. Clypeal sulcus curved. Clypeus 3.20 × 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 0.30 × as long as basal mandibular width. Mandible bidentate, 1.40 × as long as basal width (front view).

Mesosoma. Pronotum polished, with fine and scattered setiferous punctures. Epomia present. Mesoscutum shiny, with moderately dense setiferous punctures. Notauli deep, reaching ca. 0.40 of length of mesoscutum. Mesopleuron shiny, with relatively dense setiferous punctures. Epicnemial carina strong. Metapleuron shiny, with scattered setiferous punctures, ca. 1.65 × as long as height. Submetapleural carina strong, enlarged anteriorly, reaching ca. 0.70 metapleuron length, its anterior end slightly curved up. Propodeum shiny, with fine and scattered setiferous punctures, denser laterally, in dorsal view 1.10 × as long as medially wide. Propodeal spiracle elliptic, just above the pleural carina (Fig. 4D-E ). Pleural carina complete and strong, culminating posteriorly in a small propodeal crest. Hind leg with femur ca. 5.50 × as long as height and ca. 0.75 × as long as tibia. Fore wing with vein 1cu-a interstitial to M & Rs; areolet 1.45 × as wide as height; vein 1cu-a and vein 2m-cu slight curved. Hind wing with vein cu-a ca. 2.25 × as long as proximal abscissa of CU; vein cu-a reclivous and straight; proximal abscissa of CU vertical; distal abscissa of CU present, reaching wing margin (Fig. 4G ).

Metasoma. Tergite I ca. 1.90 × as long as posteriorly wide, shiny, with fine and relatively dense setiferous punctures, more extended laterally (Fig. 4F ); spiracle near its anterior 0.40; dorsolateral carinae of first metasomal tergite present on petiole and stronger on postpetiole. Posterior membranous section of first metasomal sternite ca. 0.40 of length of tergite. Tergite II ca. 1.10 × as long as posteriorly wide, shiny, with fine and relatively dense setiferous punctures, more extended laterally; posterior half of tergite II and tergites III-V densely and strongly punctuate; ovipositor slender, evenly down curved at distal 0.20, ca. 4.35 × as long as hind tibia (Fig. 4A ); apex of ovipositor with expanded area of lower valve bearing ca. 7 teeth, the most proximal 2 vertical; ovipositor sheath ca. 1.10 × as long as body, and ca. 3.00 × as long as hind tibia, bearing fine dense hairs which are ca. 1.10 × as long as width of sheath.

Color. Head and antenna entirely reddish black. Mesosoma mostly reddish black with pronotal spiracle, two wide longitudinal stripes interrupted by notauli on mesoscutum, scutellum dorsally, metanotum dorsally, red. Fore, mid and hind legs mostly red, with coxa and trochanter (except posterior margin), reddish black. Wings yellowish, pterostigma light brown (Fig. 4G ). Metasoma mostly yellowish brown with anterior half of tergite I dorsally, posterior margin of tergites II-V, a semicircular dorsal spot based on the anterior margin of tergite V, tergites VI-VIII, reddish black (Fig. 4A, B, F ). Ovipositor dark brown and ovipositor sheath reddish black.

Male. Unknown.

Variation. There are some specimens with body length (12.30-13.85 mm) and wing length (11.15-13.40 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, 24-IV-2019, coll. Mazariegos, L. (UNIANDES). Paratypes. 1 ♀, same locality, same collection method, 15-VIII-2019, coll. Jaramillo, J. (UNIANDES); 2 ♀♀, same locality, same collection method, 15-IX-2019, coll. Rendon, U. (UNIANDES).

Distribution.

Colombia.

Etymology.

The specific epithet is a tribute to Jorge Enrique Orejuela Gardner, National Geographic 2007 Buffet prize winner for his work over three decades in Colombia on conservation education, protected area management and sustainable development. His accomplishments include the establishment of the cloud forest nature reserve La Planada, also helped establish Utría and Gorgona Island national parks, and the Quindío Basin and Calima River nature reserves. His mentoring for the creation of the Mesenia-Paramillo nature reserve was key to the success of this conservation project.

Biological note.

Host unknown.

Comments.

Dolichomitus orejuelai sp. nov. is most similar to the Neotropical species D. rufescens (Cresson, 1865), D. grilloi Gauld, 1991, D. flacissimus Gauld, Ugalde & Hanson, 1998 and D. bivittatus Townes, 1975 mainly by color pattern reddish black or brown on the body. But this new species differs from D. bivittatus by having ovipositor sheath <1.50 × as long as body (> 3.50 in D. bivittatus ) and differs from D. flacissimus by having fore wing yellowish with pterostigma light brown (infumate with pterostigma brown in D. flacissimus ). Differs mainly from D. grilloi by having posterior ocellus separated from eye 1.30 × its maximum diameter (0.80-0.90 × in D. grilloi ) and differs from D. rufescens by having metasoma mostly yellowish brown with anterior half of tergite I dorsally, posterior margin of tergites II-V, a semicircular dorsal spot based on the anterior margin of tergite V, tergites VI-VIII reddish black (entirely reddish in D. rufescens ).

Figures

Figure 4. A-G Dolichomitus orejuelai 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 dorsolateral view E mesosoma in dorsal view F tergites I-III in dorsal view G wings. Scale bars: 5.00 mm (A, B); 1.00 mm (C, D, E, F); 2.00 mm (G).