Coelinius itamonte Souza-Gessner & Penteado-Dias sp. nov.

(Figs 7–13)

Diagnosis. Head about as wide as long in dorsal view (Fig. 8). Temple length 1.38–2.20× eye length (lateral view). Frons concave and rugose (Fig. 8). Mandible narrower apically than basally, with four teeth (Fig. 10). Occiput sinuous. Distance between posterior ocelli 1.25× ocell diameter. Mesosoma length 2.17–3.0× its height. Notauli deeply impressed, extending posteriorly towards mesoscutum (Fig. 12). Precoxal sulcus foveolate, reaching the mesocoxae (Fig. 11). T1 length 2.68–3.78× apical width. Ovipositor extremely short, not projecting beyond apex of the metasoma (Fig. 7).

Material Examined. Holotype. ♀ (DCBU-209792). BRAZIL, Serra da Mantiqueira (RPPN APA-UFC), Itamonte, MG, S 22°22'25" W 44°48'41" 2.149m. Malaise trap, 10.XII.2015, A.S. Soares e L.A.M. Soares cols.

Paratypes. 7 ♀, 4 ♂ (DCBU-209791, 194314, 194309, 194311, 194308, 194306, 194315, 194313, 194310, 194312, 209790), same data as holotype . 3 ♀, 1♂ (DCBU-209789, 209118, 209119, 194307), same data as holotype, except 25.X.2015 .

Description. Female. Body length. 4.50–6.78 mm. Fore wing length. 3.15–3.84 mm.

Head. Head length in dorsal view 0.84–1.02× width at eyes (dorsal view). Temple length 1.67–1.91× eye length (lateral view). Antenna length 0.71–0.81× body length, with 38–40 flagellomeres. First flagellomere length 1.30–1.40× second flagellomere. Eye length 0.55–0.68× its height. Eye minutely setiferous. Occiput sinuous, setose. Distance between posterior ocelli 1.25× ocellus diameter. Ocell-ocular distance 1.00–1.30× width of the ocellar triangle (Fig. 8). Face width 1.23–1.90× its height, medially with a prominent raised area, setiferous and rugulose in center, setose laterally, with deep punctures at setae bases. Frons concave and rugose (Fig. 8). Labial palp with four palpomeres, maxillary palp with six palpomeres. Clypeus protuberant, setiferous and punctate, with a deep groove between clypeus and face. Tentorial pits not visible. Mandible with four teeth (Fig. 10). All teeth strongly curved, directed upwards. Tooth four appearing as a linear protrusion between tooth one and two. Mandible length 1.30–2.00× its apical width, its apical width 0.64–0.90× basal width. Mandible surface setose and rugose, teeth glabrous and smooth. Tooth three with a well-developed ridge. Tooth one and two acute apically. Tooth two elongate and triangular. Tooth three rounded apically.

Mesosoma . Mesosoma length 2.25–3.12× mesoscutum width, 2.17–3.00× its height (Fig. 11). Mesoscutum width 0.75–1.33× the mesosoma height. Pronotum, in dorsal view, entirely carinate rugose, setiferous, with deep pronope. Pronotum in lateral view, setose, with long setae around the margins, medially scrobiculate, ventrally rugose and dorsally mostly smooth (Fig. 11). Mesoscutum smooth, median lobe setose, lateral lobes setiferous. Notauli deeply impressed, laterally crenulated, extending posteriorly on mesoscutum towards scutellar sulcus (Fig. 12). Mesonotal midpit elongate, broad and deep posteriorly, midpit length 0.13–0.23× mesoscutum length. Scutellar sulcus width 2.00–3.14 its length, bearing a median longitudinal ridge, along with crenulae and rugae. Axillae extending posteriorly as discrete protuberances. Scutellar disc rounded, slightly punctuate and setiferous. Parascutellar area entirely rugose, setiferous. Post-scutellum polished. Metanotum anteriorly rugose and posteriorly costate, setiferous medially. Propodeum coarsely rugose with a median longitudinal carina on basal two-thirds (Fig. 12), setose. Mesopleuron medially smooth and slightly setose, setae long and concentrated on the ventral surface, dorsal surface of the mesopleuron, rugose and almost bare (Fig. 11); subalar area slightly rugose and bare; precoxal sulcus foveolate, reaching the mesocoxa. Metapleuron strongly scrobiculate and setose (Fig. 11).

Wings. Fore wing vein r arising distinctly distal of mid-stigma, its length about 0.60× width of stigma. Vein 3RS evenly curved towards the anterior margin of the wing. Marginal cell short and broad. Stigma length 1.03– 1.38× vein R1 length.

Metasoma. T1 length 2.68–3.23× its apical width, striate-rugulose, medially with a well-developed longitudinal carina on basal third (Fig. 13). T2 smooth and shiny, remainder terga setose. Ovipositor sheath extremely short, 0.03–0.10× T1 length, not projecting beyond apex of the metasoma (Fig. 7), with a dense tuft of setae concentrated apically.

Coloration. Head, teeth, mesosoma, meso- and metacoxa, and T1 black. Mesotibia, mesotarsi, remainder of hind leg, and remainder metasoma dark brown. Base of antenna, as far as flagellomere two and three, in dorsal view, brownish yellow, remainder brown. Mandibles, ventral surface of scape until third flagellomere, ventral face of profemur and protibia yellow. Mouth parts, trochanter, trochantellus and dorsal surface of femur, tibia of prolegs, midleg and hindlegs and wing venation brown. Wings membrane hyaline.

Male. Similar to female, except: Body length: 3.76–4.00 mm. Fore wing length: 2.80–3.00 mm. Head. Head length in dorsal view 0.87–0.97× width at eyes. Temple length 1.38–1.82× eye length (lateral view). Antenna length 0.95–1.15× body length, with 48–52 flagellomeres. Ocell-ocular distance 1.40–1.60× width of ocellar triangle. Face width 1.46–1.70× its height. Mandible length 1.50–1.80× its apical width. Mesosoma . Mesoscutum 0.83–1.32× as wide as long. Mesosoma length 2.74–2.93× mesoscutum width. Mesosoma length 2.24–2.83× height. Mesoscutum width 0.77–1.03× mesosoma height. Midpit length 0.16–0.21× mesoscutum length. Wings. Stigma length 1.17–1.22× vein R1 length. Metasoma. T1 length 2.78–3.78× its apical width.

Biology/ecology. Malaise-trapped at high-altitude grasslands.

Distribution. Brazil, Minas Gerais state.

Etymology. The name refers to the origin location of this species: the Serra Fina Mountain, in Itamonte, MG, Brazil.

Comments. This species is most similar to Coelinius calcara (Riegel, 1982) . It differs by having head as wide as long ( calcara, wider than long); frons concave and rugose ( calcara, slightly concave and punctate); notauli crenulate ( calcara, rugulose); mesoscutum smooth and shiny ( calcara, shiny and shagreened); mesopleuron smooth ( calcara, shinning, shagreened, rugose both on anterodorsal quarter and posterior end); body color predominantly black to dark brown ( calcara, reddish-brown).