Toechorychus melgassus Tedesco & Aguiar 2013, sp. nov.
Creators: name: Tedesco, Anazélia M.
name: Aguiar, Alexandre P.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Toechorychus
Toechorychus melgassus

description: Toechorychus melgassus Tedesco, sp. nov.   
(Figs 37, 52, 61, 98, 115, 130, 178)  
Description. Holotype FEMALE. Fore wing length 6.32 mm.  
 Head. Mandible 1.39 as long as basal width, densely pilose; ventral margin projected as crest; dorsal tooth distinctly longer than ventral tooth. Clypeus 1.71 as wide as high, subrectangular, minutely strigulate, apically smooth; apex 1.37 as long as base, truncate; apical margin blunt, medially straight. Supraclypeal area entirely densely punctate, densely pilose, medially slightly prominent; between antennal foramens with U-shaped carina; radicle punctate. Antenna with 24 flagellomeres; white band starting at flagellomere 4, reaching flagellomere 12; flagellum slender; subapical flagellomeres slightly flattened. Supra-antennal area without distinct median carina, medially without longitudinal elevation, near antennal sockets not striate; dorsal half medially smooth. Paraocular area smooth. Vertex strigulate between ocelli, without sulcus; gena and vertex behind ocelli smooth, sparsely pilose; gena in lateral view uniformly wide; occipital carina stout, dorsally uniformly arched, ventrally slightly projected as crest, reaching hypostomal carina far from mandible base; hypostomal carina projected as crest; malar space 1.03 as long as basal width of mandible.   
 Mesosoma. Mesosoma in dorsal view 2.12 as long as wide; in lateral view, mesosoma middle width 0.19 mm. Pronotum centrally smooth, latero-ventrally rugose behind collar, margin near mesopleuron ventrally corrugated; pronotal swelling strigulate; collar dorso-laterally carinated, not swollen, anteriorly punctulate; epomia absent. Mesoscutum sparsely pilose, densely punctate, impression of notaulus corrugated, central lobe without longitudinal sulcus or carina; notauli faintly impressed, posteriorly parallel throughout. Scutoscutellar groove smooth, polished; scutellum 1.3 as long as wide, scarcely punctate; scutellar carina incomplete, restricted approximately to anterior 0.6; postscutellum 0.34 as long as wide; hind margin of metanotum with two lateral teeth. Subalar ridge somewhat rounded; mesopleuron dorsally medially markedly strigate, ventrally strigulate; mesopleural groove corrugated; epicnemial carina stout, dorsally curving forwards; dorsal end of epicnemial carina reaching 0.1 of posterior margin of pronotum, behind epicnemial carina without rounded confused-rugulose area; sternaulus medially shallow, interrupted, reaching base of mid coxa, markedly sinuate, moderately impressed, faint from anterior 0.5 to 0.7, not corrugated; scrobe moderately deep, forming pit with sulcus. Mesothoracic venter punctate; median portion of posterior transverse carina of mesothoracic venter V-shaped, regularly shaped, without projections. Transverse furrow at base of propodeum laterally 0.09 as long as anterior portion of propodeum, shallow and narrow, medially wide, uniformly corrugated; propodeum 1.33 as long as wide medially; anterior margin of propodeum without teeth; anterior portion of propodeum strigulate, medially without longitudinal carinae; lateral longitudinal carina of propodeum indistinct; posterior portion of propodeum strigate, progressively coarse toward posterior margin, medially without distinctly stout longitudinal carina; anterior transverse carina of propodeum complete, stout, medially slightly arched forwards; posterior transverse carina absent; propodeal spiracle 1.71 as long as wide; pleural carina of propodeum absent; lower division of metapleuron strigulate, densely pilose, juxtacoxal carina short and faint.   
 Wings. Fore wing: vein 2+3Rs almost straight; ramellus absent; vein 1M+Rs entirely sinuous; vein 1cu-a posteriorly slightly curved, arising far from vein 1M+Rs base, angle with vein M+Cu distinctly obtuse; vein 2Cu 0.48 as long as vein 2cu-a; vein 4Rs 0.99 as long as vein 4M, straight; cell 1+2Rs 0.74 as high as pterostigma, pentagonal; vein 2M distinctly shorter than vein 3M; vein 3M indistinct. Hind wing: vein 1Cu 1.44 as long as vein cu-a; vein 2-1A reaching 0.8 of distance to posterior margin.   
 Legs. Tibia with sparse short bristles; hind coxa elongate.   
 Metasoma. T1 0.47 as long as hind femur, without basolateral tooth; anteriorly smooth, posteriorly coriarious; spiracle at anterior 0.53, not prominent; postpetiole dorsally, at level of spiracles, faintly but distinctly concave; T2–8 minutely coriarious; centrally almost glabrous, laterally pilose; T2 1.09 as long as wide at apex; apex of T2 2.37 as wide as base. Dorsal valve of ovipositor with nodus indistinct; apex of lower valve with series of teeth; notch present.   
 Color. Head and metasoma mostly white and black, mesosoma orange. Head: whitish; mandible teeth, supraantennal area only behind scape, interocellar area, vertex and gena, except complete large orbital band, and occiput, dark brown, blackish posteriorly; scape ventrally yellow, scape dorsally, pedicel, and flagellum ventrally, brown; flagellum dorsally completely whitish at f4–10, f3 and f11 partially white. Mesosoma: orange (207,091,021); propleuron, subalar ridge, epicnecium, mesothoracic venter, mesepimeron, and apex of juxtacoxal area, whitish (222,176,094). Legs: orange (207,091,021), yellowish towards apex; all t5 dark brown. Metasoma: T1 orange, both basal and apical 0.1 white; T2 basally orange, blackish toward apex, posterior 0.3 white; T2 basally black, posterior 0.4 white; T3–8 basally black, lateral and posterior 0.4 white; S2–8 white, with lateral brown mark.   
 Variation. Fore wing of same length on both females. Antenna with 23 flagellomeres. Supra-antennal area medially orange; around ocelli lighter. T2 orange only at anterior 0.1. Scutoscutellar groove faintly corrugated.   
 Comments. This is the only known species with mesosoma and legs almost entirely orange, except by small white areas (Fig. 37). Very similar to T. marcapatus sp. nov. from which it can be separated by having mesosoma completely orange (vs. pronotum, mesoscutum and mesopleuron marked with black areas in T. marcapatus sp. nov.); lateral portion of collar carinated, not swollen, as in Fig. 46 (vs. dorsally rounded, distinctly swollen, as in Fig. 47); pleural carina of propodeum present only posteriorly (vs. absent, as in Fig. 42).   
 Male. Unknown.   
 Distribution. Brazil. Known only from the Floresta Nacional de Caxiuanã (2°4’54”S 51°51’5”W), Pará, from two close localities (Fig. 212).   
 Biology. Unknown.   
 Material examined. 2 females. Holotype ♀, BRAZIL: Pará, Melgaço, Floresta Nacional de Caxiuanã, Trilha do Igarapé Curua, 14–17.XI.2003, YPT, A.P.Aguiar & J.Dias leg., P05020 [field point] (UFES). Complete, in good shape. Paratype: BRAZIL: 1 ♀ from Pará, Melgaço, Floresta Nacional de Caxiuanã, Trilha do Igarapé Tijucaquara, 15–18.XI.2003, YPT, A.P.Aguiar & J.Dias leg., P05038 [field point] (UFES).
description: Published as part of Tedesco, Anazélia M. & Aguiar, Alexandre P., 2013,  Phylogeny and Revision of  Toechorychus  Townes (Hymenoptera, Ichneumonidae, Cryptinae), with descriptions of thirty-five new species , pp. 1-138 in Zootaxa 3633 (1) on pages 51-53, DOI: 10.11646/zootaxa.3633.1.1, http://zenodo.org/record/5261931