Coelinius lux 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 : 286-288

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

( Figs 22–27 )

Diagnosis. Head length, in dorsal view, 0.80× width at eyes. Temple length 0.61× eye length (lateral view). Frons smooth. Mandible with five teeth, apically narrower than basally ( Fig. 25 ). Mandible length 2.00× apical width. Occiput rounded. Distance between posterior ocelli equal the ocellus diameter. Mesosoma length 2.18× its height ( Fig. 26 ). Notauli developed only at anterior portion of the mesoscutum. Precoxal sulcus absent. Metapleuron densely setose ( Fig. 26 ). T1 strongly striate. Ovipositor sheath slightly projecting beyond apex of the metasoma ( Fig. 22 ), its length 0.43× T1 length.

Material examined. Holotype. ♀ CNC. Brazil, Serra da Bocaina , São José do Barreiro, SP, 1.600 m, XI/1968. Alvarenga col.

Description. Female. Body length: 3.74 mm. Fore wing length: 2.38 mm.

Head. Head, in dorsal view, wider than long, its length 0.80× width at eyes. Temple length 0.61× eye length (lateral view). Antenna length 0.99× body length, with 35 flagellomeres. First flagellomere length 1.05× second flagellomere. Eye length 0.67× its height, minutely setiferous. Occiput rounded. Distance from the occiput to the ocellar triangle 1.00× ocellar triangle height. Distance between posterior ocelli equal to the ocellus diameter. Ocellocular distance 1.20× width of the ocellar triangle. Face width 0.95× its height. Face setiferous, weakly punctate at setae bases, without a prominent raised area. Frons smooth, without grooves near antennal insertions. Labial palp with four palpomeres, maxillary palp with five palpomeres. Clypeus weakly protuberant, setiferous, with a shallow groove between clypeus and face. Tentorial pits visible. Mandible with five teeth ( Fig. 25 ). All teeth slightly directed upwards. Tooth four appearing as a linear protrusion at the dorsal surface of tooth two, between tooth one and two. Tooth five as a protrusion at the base of tooth two, between two and three. Mandible outer surface setiferous and rugulose, with teeth glabrous and smooth. Teeth rounded apically, except tooth two triangular, acute apically and elongate. Mandible length 2.00× its apical width. Mandible apical width 0.50× its basal width.

Mesosoma . Mesosoma length 3.42× mesoscutum width. Mesosoma length 2.18× its height ( Fig. 26 ). Mesoscutum width 0.63× mesosoma height. Pronotum, in dorsal view, entirely smooth, setiferous. Pronope present. Pronotum in lateral view, mostly bare, with short semi-erect setae around the margins, entirely smooth ( Fig. 26 ) and shiny. Mesoscutum in lateral view evenly rounded in front of the tegulae, dorsally bare, with a line of short and sparse setae anteriorly around base of notauli. Notauli developed only at anterior portion of the mesoscutum, slightly crenulated. Mesonotal midpit broad and deep posteriorly, slightly elongate, 0.16× mesoscutum length. Scutellar sulcus width 2.20× its length, without divisions, smooth inside. Scutellar disc slightly punctate, setiferous. Parascutellar area anteriorly smooth, setiferous, posteriorly costate. Post-scutellum polished. Metanotum anteriorly smooth, setose, medially with a short longitudinal carina, setiferous, laterally crenulated at the posterior margins. Mesopleuron smooth, bare, except for a few setae concentrated on ventral surface. Subalar area smooth and bare. Precoxal sulcus absent ( Fig. 26 ). Prepectal furrow laterally smooth, ventrally crenulated. Metapleuron areolate-rugose, densely setose, covered with long setae. Propodeum coarsely rugose with a median longitudinal carina anteriorly, entirely setose, with long setae, the setae directed towards posterior end of propodeum.

Wings. Fore wing vein r arising near mid-stigma, its length 0.60× stigma width. Vein 3RS slightly curved. Marginal cell long and narrow. Stigma length 0.94× vein R1 length.

Metasoma. T1 length 3.05× its apical width, strongly striate, with shallow dorsopes. T2 smooth and shiny. T3 and the remainder metasoma with a row of long and semi-erect setae present on apical portion of each terga. Ovipositor sheath length 0.43× T1 length, slightly projecting beyond apex of metasoma ( Figs 22, 27 ), setiferous along its length.

Coloration. Head dark brown, with palps and base of antennae as far as flagellomere three yellowish. Mesosoma black, except propleuron and pronotum yellow. Legs yellowish-light brown with metacoxa and tibia apically brown. Metasoma light brown, except T1 black and T2 brown. Wings membrane hyaline, venation light brown.

Male. Unknown.

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

Distribution. Brazil, Sao Paulo State.

Etymology. This species is named in honour of a pioneer Brazilian radiologist Dr. Jose Alves da Luz.

Comments. This species is not similar to any other described species of Coelinius . It differs by having T1 strongly striate, with basal median carina not clearly defined. Frons smooth. Antenna 35 segmented. Mesosoma length more than 2.0× its height. Metapleuron densely setose. Mandible length 2.0× its apical width.

Figures

FIGURES 22–27. Coelinius lux sp. nov. (female). 22. Habitus, lateral view. 23. Head, lateral view. 24. Head, antero-lateral view. 25. Mandible. 26. Mesosoma, lateral view. 27. Metasoma, lateral view.