Coelinius canastra Souza-Gessner & Penteado-Dias, 2019

Souza-Gessner, Carolina Da Silva, Almeida, Luis Felipe Ventura De & Penteado-Dias, Angélica Maria, 2019, Four new species of Coelinius (Hymenoptera: Braconidae: Alysiinae) from the neotropical region, Zootaxa 4586 (2), pp. 278-288 : 279-281

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

( Figs 1–6 )

Diagnosis. Head about as wide as long in dorsal view ( Fig. 3 ). Temple length 1.7× eye length (lateral view). Frons concave, smooth and shiny. Mandible with four teeth. Mandible apically as wide as basally. Distance from occiput to ocellar triangle 2.00× ocellar triangle height. Distance between posterior ocelli 1.33× ocellus diameter. Mesosoma length 2.44× its height ( Fig. 4 ). Notauli deeply impressed, foveolate, extending posteriorly on mesoscutum ( Fig. 6 ). Precoxal sulcus rugulose, reaching the mesocoxa. Metapleuron setose. Ovipositor sheath short, not projecting beyond apex of metasoma ( Fig. 1 ).

Material Examined. Holotype. ♀ (DCBU-89502) Brazil, Serra da Canastra , São Roque de Minas, MG, S 20° 8’ 20" W 46° 47’ 20" 1.353 m. Malaise trap, 04.XI.2009, J. Fiorelini col.

Description. Holotype. Female. Body length. 3.41 mm. Fore wing length. 2.25 mm.

Head. Head about as wide as long in dorsal view ( Fig. 3 ). Temple length 1.70× eye length (lateral view). Antenna length 0.85× body length, with 36 flagellomeres. Length of first flagellomere 1.12× second flagellomere. Eye minutely setiferous, with length 1.25× its height ( Fig. 4 ). Occiput sinuous, setiferous. Distance from occiput to ocellar triangle 2.00× ocellar triangle height. Distance between posterior ocelli 1.33× ocellus diameter. Ocell- ocular distance 1.12× width of the ocellar triangle. Face width 1.71× its height ( Fig. 2 ), medially with a longitudinal raised area, setose, coriaceous, and shiny, with fine punctures at setae bases. Frons concave, smooth and shiny. Labial palp with three very short palpomeres. Maxillary palp with five palpomeres. Clypeus setiferous and punctate, somewhat protuberant, with a groove between it and the face. Tentorial pits not visible. Mandible with four teeth, 1.00× as long as its apical width, with apical width 1.00× basal width. Fourth tooth consisting of a well-developed protrusion between tooth one and two. All teeth strongly curved, directed upwards. Mandible surface setose and rugose, except teeth glabrous and smooth. Tooth one and two acute apically. Tooth two elongate and triangular. Tooth three rounded apically and with a well-developed ridge.

Mesosoma . Mesosoma length 2.44× its height ( Fig. 4 ), 2.40× mesoscutum width. Mesoscutum width 1.00× mesosoma height. Pronotum, dorsally entirely rugulose, setiferous, with large and deep pronope; laterally setiferous, with long setae around margins; medially and ventrally slightly scrobiculate. Mesoscutum slightly coriaceous and shiny, median lobe setose, lateral lobes setiferous, with long and sparse setae. Notauli deeply impressed and foveolate, extending posteriorly towards the scutellar sulcus ( Fig. 6 ). Scutellar sulcus rugose with a median longitudinal ridge, its width 3.66× its length. Axilla not extending posteriorly as protuberances. Scutellar disc setiferous, rounded, slightly coriaceous and shiny. Parascutellar areas entirely rugose and setiferous. Postscutellum rugose. Metanotum rugose and setiferous. Propodeum rugulose, with long and sparse setae and with a median longitudinal carina on basal two-thirds. Mesopleuron medially smooth and bare, ventrally setose, dorsally rugulose and bare. Subalar area rugulose. Precoxal sulcus rugulose, reaching the mesocoxa. Metapleuron rugulose and setose.

Wings. Fore wing vein r arising distinctly distal of mid-stigma, its length about 0.75× the width of stigma. Vein 3RS evenly curved towards the anterior margin of wing. Marginal cell short and broad. Stigma length 1.66× R1 vein length.

Metasoma. T1 length 3.75× its apical width, rugose ( Fig. 5 ), shiny, medially with a longitudinal carina on basal half. T2 coriaceous and shiny, remainder of terga smooth. Ovipositor sheath, extremely short, 0.13× T1 length, not projecting beyond apex of the metasoma ( Fig. 1 ). Ovipositor sheath with a tuft of setae apically.

Coloration. Head, flagellomeres, most of mouth parts, of the legs, of the metasoma, and wing venation brown. Wing membranes hyaline. Mandibles and basal and apical portions of T1 yellow. Base of antenna, as far as first and second flagellomeres brownish-yellow. Mesotibia, mesotarsi, metatibia and metatarsi light brown.

Male. Unknown.

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

Distribution. Brazil, Minas Gerais State.

Etymology. The name refers to the origin location of this species: Serra da Canastra in Minas Gerais State, Brazil.

Comments. This species is most similar to C. baldufi ( Riegel, 1982) , but differs by the frons smooth and shiny ( baldufi , rugulose with shallow irregular pits); notauli foveolate ( baldufi , rugose); propodeum foveolate ( baldufi , rugulose); and T1 rugose with a median longitudinal carina ( baldufi , uniformily covered with minute excavations arranged longitudinally, without median longitudinal carina).

Figures

FIGURES 1–6. Coelinius canastra sp. nov. (female). 1. Habitus, lateral view. 2. Head, frontal view. 3. Head, dorsal view. 4. Head and mesosoma, lateral view. 5. Propodeum, T1-T2, dorsal view. 6. Mesonotum.