Messatoporus paeneater Santos & Aguiar 2013, sp. nov.
Creators: name: Santos, Bernardo F.
name: Aguiar, Alexandre P.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Messatoporus
Messatoporus paeneater

description: Messatoporus paeneater Santos, sp. nov.   
(Figs 92, 152, 223, 265, 352)  
 Female. Fore wing 8.53 mm. HEAD: Mandible densely covered with long hairs; MLW 2.62; MWW 0.44; dorsal tooth in front view projected upwards, much longer than ventral tooth; ventral tooth triangular. MSM 0.31. Clypeus almost entirely flattened, centrally straight; CHW 3.04; CWW 2.09; apical area medially concave, laterally with distinct triangular lobes, its margin regular, not raised. Antenna with 27 flagellomeres; flagellum uniform; apex of apical flagellomere much narrower than base, distinctly tapered. Supra-antennal area mat, scarcely punctate, distinctly striate near antennal sockets, ventrally distinctly concave, dorsally with very weak median line, ventrally fading. Occipital carina uniformly curved, fading out at distance shorter than basal width of mandible from the hypostomal carina. Temple and gena narrow, gena regular (as in Fig. 260).   
THORAX: Pronotum centrally glabrate, moderately pilose at dorsal margin, shiny, minutely punctulate (puncticulate at dorsal corner and collar), with moderately strong striation restricted to ventral corner; epomia weak, complete, short, ending far from dorsal margin of pronotum, after diverging from pronotal collar distinctly curved. Mesoscutum strongly and uniformly convex, subcircular, 1.34 × as long as wide, anteriorly densely pilose, posteriorly sparsely pilose, shiny, anteriorly densely punctate, posteriorly almost impunctate; notaulus reaching about 0.74 of mesoscutum length, moderately impressed, surface over notaulus not wrinkled (doubt); scutoscutellar groove moderately deep, with vestigial longitudinal wrinkles. Subalar ridge moderately projected; epicnemial carina reaching about 0.7 of distance to subalar ridge, irregular; sternaulus moderately strong, wider on posterior apex, weakly sinuous, with weak vertical wrinkles; scrobe moderately deep; mesopleural suture ventrally with strong longitudinal wrinkles, wrinkles dorsally weak. Mesosternum medially with short transverse wrinkles; median portion of posterior transverse carina of the mesothoracic venter short, arched backwards. Transverse sulcus at base of propodeum very wide, about 0.91 × as long as anterior area of propodeum, laterally with weak longitudinal wrinkles, medially not wrinkled; metapleuron punctate-rugulose, without transverse wrinkles, densely pilose; juxtacoxal carina absent. Fore tibia not distinctly swollen. Mesal lobe of t4 with 3–4 bristles. Hind coxa weakly and densely punctate.  
PROPODEUM: 1.17 × as long as wide, shiny, moderately pilose; anterior area moderately punctate; spiracle elongate, SWL 4.8; anterior transverse carina medially straight. Propodeal wrinkles anteriorly very close and moderately strong, posteriorly stronger and more widely spaced, mostly complete, distinctly curved backwards; posterior transverse carina entirely absent.  
WINGS: Fore wing vein 1-Rs+M distinctly sinuous, with bulla placed on basal 0.25; crossvein 1m-cu more or less uniformly curved, limit between 1m-cu and 1-Rs+M more or less traceable; vein 1M+Rs anteriorly straight, posteriorly weakly curved; fore wing crossvein 1 cu-a basad of 1M+Rs by 0.47 of its own length; vein 2Cua 0.29 × as long as crossvein 2cu-a; bulla of crossvein 2m-cu placed on midlength; cell 1+2Rs small, APH 0.49, pentagonal, distinctly wider than high, AWH 1.2; crossvein 3r-m fully spectral, 2r-m and 3r-m subparallel, about same length; vein 3-M about as long as 2-M; 4-Rs distinctly sinuous; 4-M tubular, irregular. Hind wing vein 1-M forming straight angle with vein Cua; vein 2-Rs tubular, apically spectral, reaching wing margin; HW1C 0.74; vein Cub almost straight, very slightly convex, forming distinctly obtuse angle with vein Cua (basally curved); vein 2-1A reaching 0.86 of distance to posterior wing margin.  
METASOMA: First tergite moderately long, about 0.42 × as long as T2–8, somewhat depressed, ventrolaterally rounded, dorsally glabrate, laterally moderately pilose; T1LW 5.07; T1WW 1.23; spiracle on 0.52 of its length, distinctly prominent; median depression absent; lateral and median posterior depressions absent; ventrolateral carina absent. T2LW 2.42; T2WW 1.6; thyridium much longer than wide, without small circular depression just behind it; T2–8 covered with small, shallow foveae, densely and uniformly pilose. OST 0.6; ovipositor slender, slightly upcurved, basally cylindric, apically distinctly depressed; dorsal valve without ridges; ventral valve apex with 8 teeth, apical teeth progressively more closely spaced; surface anterior to first tooth not rugulose.  
 Color. Head, mesosoma and metasoma black, with sparse whitish marks. Head: black; mandible medially, mouthparts, small marks at supra-clypeal area and thin orbital band at supra-clypeal area, supra-antennal area and median part of gena (almost opposite to eye), whitish; triangular mark at mandible base, scape, pedicel and flagellum, dark brown; f10–16 entirely white, f9 and f17 partially white. Mesosoma: black; collar and dorsal division of metapleuron dark brown; small mark at subalar ridge, lateral portions of scutellum, small marks on apical metapleuron and propodeum, whitish; fore and mid coxae dark brown, mid coxa with small whitish mark; fore trochanters and femur whitish with dorsal face brown; fore and mid tibia with whitish ventral face brown; fore t1–4 light fuscous; fore t5 and mid tarsus dark fuscous; hind femur, apical 0.8 of tibia and basal 0.5 of t1, dark brown; basal 0.2 of hind tibia, apical 0.5 of t1 and t2–5, white. Metasoma: dark brown; anterior 0.4 of T1 dorsally whitish; T1-3 with narrow posterior and wide lateral whitish stripes; metasomal sternites whitish, laterally brown.   
 Male. Similar to female, except for the following: whitish marks at supra-clypeal area from indistinct to extensive, forming irregular stripe; flagellum dark brown to blackish; apex of fore coxa and fore trochanters sometimes whitish; mid coxa sometimes not marked with white; all dark brown areas sometimes black or blackish; whitish marks at mesosoma and metasoma sometimes almost indistinct; whitish apical stripes at T2–3 indistinct to extensive, semicircular.   
 Variation. Fore wing 7.82–9.32 mm long. Whitish marks at supra-clypeal area sometimes reuced or absent; antenna sometimes with 30 flagellomeres; mesosternum sometimes dark brown; fore first trochanter sometimes almost entirely black; mid coxa often; without whitish spot; One specimen with two small yellow spots at posterior end of sternaulus.   
 Comments. Similar to M. semialbiventris sp. nov., from which it can be differentiated by having clypeus and supra-clypeal area mostly blackish (vs. pale yellow); pronotum entirely black (vs. collar and dorsal margin of pronotum with narrow yellowish marks); fore and mid coxae entirely dark brown or black (vs. with extensive yellow marks); dorsal division of metapleuron entirely black (vs. partially yellow); T2–3 with almost indistinct posterior yellowish stripes (vs. distinct, subcircular); epicnemial carina reaching about 0.7 of distance to subalar ridge, irregular (vs. complete, more or less uniformly curved); fore tibia not swollen (vs. weakly swollen); and propodeal wrinkles distinctly curved backwards (vs. mostly slightly curved or somewhat sinuous).   
 Biology. Unknown.   
 Etymology. From the Latin words paene, meaning “almost”, and ater, meaning “black”; in reference to the almost entirely black body.   
 Material examined. 20 ♀, 12 ♂♂. Holotype ♀ from BRAZIL, Santa Catarina, Nova Teutônia, 300–500 m, 9.III.1939, FPlaumann (BMNH). Pinned. Right hind t5 missing; otherwise in good shape.   
Paratypes: 2 ♂♂ from BRAZIL, Minas Gerais, Santa Bárbara, Serra do Caraça, II.1970, FMOliveira; 2 ♂♂, same data except 1600 m, II.1969. 1 ♀ from BRAZIL, Rio de Janeiro, Represa Rio Grande, VII.1966, MAlvarenga. 1 ♂, same data except Teresópolis, 12.III.1966, Townes & Townes. 1 ♀ from BRAZIL, São Paulo, São José do Barreiro, Serra da Bocaina, 1600 m, 4–7.XI.1967, Alvarenga & Seabra (AEIC). 1 ♀ from BRAZIL, São Paulo, Montevideo, 15.I.1942, Parker, “ So. Amer Paras Lab ” (USNM). 2 ♀ from BRAZIL, Santa Catarina, Nova Teutônia, 300–500 m, II.1968, FPlaumann; 1 ♀, same data except XI.1968; 2 ♀, same data except IV.1971; 1 ♀ 1 ♂, same data except I.1968; 1 ♀ 1 ♂, same data except II.1968; 1 ♂, same data except X.1970; 1 ♂, same data except I.1971; 1 ♂, same data except III.1971; 1 ♂, same data except XI.1970; 1 ♂, same data except 15.XII.1955; 1 ♀, same data except 2.XI.1953; 1 ♀, same data except 25.III.1952; 1 ♀, same data except 27.III.1952; 1 ♀, same data except 30.XI.1954 (AEIC); 1 ♀, same data except 18.XI.1958; 1 ♀, same data except XII.1968 (BMNH); 1 ♀, same data except 1.VI.1956; 1 ♀, same data except 9.XI.1952; 1 ♀, same data except XII.1967 (CNCI).  
 Distribution. Atlantic Forest in southern and southeastern Brazil (Fig. 352).
description: Published as part of Santos, Bernardo F. & Aguiar, Alexandre P., 2013,  Phylogeny and revision of  Messatoporus  Cushman (Hymenoptera, Ichneumonidae, Cryptinae), with descriptions of sixty five new species , pp. 1-284 in Zootaxa 3634 (1) on pages 165-167, DOI: 10.11646/zootaxa.3634.1.1, http://zenodo.org/record/5262081