Lathrolestes pitunauassu
Creators: name: Lima, Alessandro Rodrigues
name: Kumagai, Alice Fumi
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Lathrolestes
Lathrolestes pitunauassu

description: Lathrolestes pitunauassu Lima & Kumagai sp. n.
(Figs 2 A‒F)
Type locality. Brazil, Minas Gerais, Belo Horizonte (Estação Ecológica UFMG).
Diagnosis. Yellow body; with antennal flagellum completely black; metasoma with anterior half of tergite I and entire sternite I brown; basal half of tergites II–IV and entire length of tergites V+ black; fore wing infuscate at apex; area superomedia 1.4× as long as wide apically; area petiolaris as long as posterior width, apically 2.3× as wide as basally. Fore wing vein 2rs-m as long as abscissa of M between 2rs-m and 2m-cu. Hind wing with distal abscissa of Cu1 joining cu-a closer to 1A than to M;
Description (Holotype). Female. Mandible slender, weakly tapered beyond middle; lower tooth 2.4× as long as the upper one. Malar space 0.3× as long as basal mandibular width. Clypeus punctate, not clearly separated from face; in lateral view flat, with margin blunt; in anterior view 2.25× as broad as long, with margin convex. Face transverse, 2.16× as broad as long (Fig. 2 D). Eye in lateral view as broad as maximum breadth of gena (Fig. 2 C). Lateral ocellus separated from eye by 1.6× its maximum diameter. Occipital carina dorsally complete (Fig. 2 B), reaching base of mandible without joining hypostomal carina. Antenna with 40 flagellomeres; first flagellomere 1.5× as long as the second one.
Pronotum dorsally with a transverse impressed furrow that is smooth at midline and crossed by numerous crests laterally; epomia absent. Mesoscutum polished, densely pilose, evenly rounded in lateral view; without distinct notaulus. Mesopleuron polished, pilose, except on speculum, that is glabrous. Epicnemial carina laterally extending up to level of lower corner of pronotum; its upper end remote from the anterior margin of mesopleuron. Posterior transverse carina of mesosternum reduced to lateral vestiges. Scutellum smooth and shiny; as long as anterior width; strongly convex; without lateral carina. Metapleuron inflated. Submetapleural carina broad in its entire length. Propodeum in lateral view convexly rounded; fully carinate (Fig. 2 E); posterior transverse carina on area superomedia slightly curved towards metasoma; area superomedia 1.4× as long as wide apically; area petiolaris as long as posterior width, apically 2.3× as wide as basally; pleural carina complete.
Fore wing length 6.82 mm; vein cu-a reaching M+Cu opposite of Rs&M (Fig. 2 A); 2rs-m as long as abscissa of M between 2rs-m and 2m-cu; 2m-cu with a single bulla, joining areolet closer to 3rs-m than to 2rs-m; abscissa of Cu1 between 1m-cu and Cu1a 1.4× as long as Cu1b, and the two veins subtending an angle of about 180° in the first subdiscal cell. Hind wing with first abscissa of M+Cu1 slightly arched; first abscissa of Cu1 2.35× as long as cu-a, so distal abscissa of Cu1 joining cu-a closer to 1A than to M; distal abscissa of Rs, M, Cu1 and 1A nontubular; left hind wing R1 with six hamuli, right one with seven hamuli.
Middle leg with inner tibial spur 1.5× as long as outer one. Tarsal claw pectinate to its apex.
Metasomal tergite I granulate; 1.4× as long as posteriorly broad in dorsal view; with lateromedian longitudinal carina extending 0.65 of its length; with lateral carina present on its entire length; glymma strongly impressed; spiracle slightly before middle. Cercus disc-like. Subgenital plate subquadrate in lateral view. Ovipositor 1.2× as long as subgenital plate, basally stout, with a long shallow dorsal depression and a rather slender apical portion (Fig. 2 F).
Head yellow, with mandible teeth, flagellum, interocellar area and two narrow stripes joining lateral ocelli and occiput black. Mesosoma yellow, with mesoscutal vittae and scuto-scutellar groove black; fore and middle legs yellow, with apical tarsomeres of fore leg and all tarsomeres of middle leg brown; hind leg orange, with apex of tibia and tarsomeres black. Metasoma yellow, anterior half of tergite I and entire sternite I brown; basal half of tergites II‒IV and entire length of tergites V+ black; ovipositor sheath, subgenital plate and precedent sternum entirely brown, other sternites laterally brown marked. Wings slightly yellowish with distal apex of fore wing distinctly infuscate; pterostigma black.
Male. Unknown.
Variation. Paratype similar to holotype but antennae with 39 flagellomeres and fore wing length 7.13 mm.
Comments. The holotype has a spurious vein on the left hind wing, parallel to the first abscissa of Cu. It is considered to be a malformation since the right hind wing has no trace of such vein and this structure is not present in other Ctenopelmatinae.
Etymology. From the Brazilian Tupi pitunauassú (dark), this species is named in reference to its black flagellum.
Distribution. Lathrolestes pitunauassu Lima & Kumagai sp. n. is described from Brazil, Minas Gerais state.
Material examined. Holotype (♀). Brazil, Minas Gerais, Belo Horizonte, Campus UFMG Pampulha, Estação Ecológica, 19°52’30”S; 43°58’20”W, 842m, 11‒18.iii.2008, Malaise {trap}. A.F.Kumagai col. [1 ♀, CCT-UFMG- IHY-1600551]
Holotype condition. The metatarsomeres 3‒5 from both left and right legs are missing. Apart from that it is in good condition.
Paratype (3 ♀). Brasil, Minas Gerais, Belo Horizonte, Campus UFMG Pampulha, Estação Ecológica, 19°52’30”S; 43°58’20”W, 842m, 08‒15.iv.2008, Malaise {trap}. A.F.Kumagai col. [1 ♀, CCT-UFMG-IHY- 1600552]; same data, 08‒15.xii.2008 [1 ♀, CCT-UFMG-IHY-1502167]; same data, 08‒15.xii.2008 [1 ♀, CCT- UFMG-IHY-1502084].
description: Published as part of Lima, Alessandro Rodrigues & Kumagai, Alice Fumi, 2016, Lathrolestes Förster, 1869 (Hymenoptera, Ichneumonidae) from Brazil, with description of two new species and a key to the Neotropical species, pp. 587-593 in Zootaxa 4170 (3) on pages 590-591, DOI: 10.11646/zootaxa.4170.3.11, http://zenodo.org/record/256337