Messatoporus orientalis 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 orientalis

description: Messatoporus orientalis Santos, sp. nov.   
(Figs 4, 5, 7, 11, 104, 158, 183, 223, 351)  
 Female. Fore wing 9 mm. HEAD: Mandible densely covered with long hairs; MLW 1.54; MWW 0.37; dorsal tooth in front view not distinctly projected upwards, much longer than ventral tooth; ventral tooth triangular. MSM 0.25. Clypeus almost entirely flattened, centrally concave; CHW 2.65; CWW 2.56; apical area medially concave, laterally slightly projected, its margin very sharp, raised. Antenna with 22 flagellomeres; flagellum uniform; apex of apical flagellomere about as wide as base, not distinctly tapered. Supra-antennal area shiny, scarcely punctate, not striate near antennal sockets, ventrally and around ocelli slightly concave, dorsally with very weak median line, ventrally fading. Occipital carina uniformly curved, fading out at distance about as long as basal width of mandible from the hypostomal carina. Temple and gena narrow, gena regular (as in Fig. 260).   
THORAX: Pronotum glabrous, shiny, impunctate, with weak and short wrinkles at ventral half of posterior margin; epomia weak, complete, short, ending far from dorsal margin of pronotum, after diverging from pronotal collar distinctly curved. Mesoscutum strongly and uniformly convex, subcircular, 1.08 × as long as wide, glabrate, shiny, minutely punctulate; notaulus reaching about 0.66 of mesoscutum length, weakly impressed, surface over notaulus not wrinkled; scuto-scutellar groove shallow, without wrinkles. Subalar ridge weakly projected; epicnemial carina reaching about 0.7 of distance to subalar ridge, irregular; sternaulus complete and strong, wider on posterior apex, strongly sinuous, smooth; scrobe very shallow; mesopleural suture with weak longitudinal wrinkles along entire length. Mesosternum medially with short transverse wrinkles; median portion of posterior transverse carina of the mesothoracic venter short, straight. Transverse sulcus at base of propodeum moderately wide, about 0.58 × as long as anterior area of propodeum, impunctate; metapleuron moderately punctate, without transverse wrinkles, dorsally moderately pilose, ventrally densely pilose; juxtacoxal carina represented by very short ridges. Fore tibia distinctly swollen. Mesal lobe of t4 with a distinct cluster of stout bristles. Hind coxa with moderately strong punctures separated by more than their own diameter.  
PROPODEUM: 1.1 × as long as wide, shiny, moderately pilose; anterior area scarcely punctate; spiracle elongate, SWL 3.5; anterior transverse carina medially slightly arched forwards. Propodeal wrinkles anteriorly very close and moderately strong, posteriorly stronger and more widely spaced, mostly complete, mostly slightly curved or somewhat sinuous; posterior transverse carina entirely absent.  
WINGS: Fore wing vein 1-Rs+M distinctly sinuous, with bulla placed on basal 0.25; crossvein 1m-cu irregular, limit between 1m-cu and 1-Rs+M more or less traceable; vein 1M+Rs anteriorly straight, posteriorly sinuous; fore wing crossvein 1 cu-a basad of 1M+Rs by 0.36 of its own length; vein 2Cua 0.66 × as long as crossvein 2cu-a; bulla of crossvein 2m-cu placed on midlength; cell 1+2Rs small, APH 0.71, pentagonal, about as high as wide, AWH 0.87; crossvein 3r-m absent, 2r-m and 3r-m parallel, about same length; vein 3-M distinctly shorter than 2-M; 4-Rs distinctly sinuous; 4-M tubular, slightly curved backwards. Hind wing vein 1-M forming distinctly obtuse angle with vein Cua; vein 2-Rs entirely tubular, apically weaker, reaching wing margin; HW1C 1.61; vein Cub distinctly convex on posterior half, forming distinctly obtuse angle with vein Cua (basally curved); vein 2-1A reaching 0.82 of distance to posterior wing margin.  
METASOMA: First tergite short, about 0.38 × as long as T2–8, strongly depressed, ventrolaterally angled, dorsally glabrate, laterally moderately pilose; T1LW 3.85; T1WW 1.52; spiracle on 0.49 of its length, distinctly prominent; median depression elongate, distinct; lateral and median posterior depressions absent; ventrolateral carina absent. T2LW 1.22; T2WW 1.85; thyridium longer than wide, with small circular depression just behind it; T2–8 minutely coriarious, densely and uniformly pilose (except T2 dorsally sparsely pilose). OST 1.55; ovipositor moderately stout, straight, basally cylindric, apically slightly depressed; dorsal valve with four moderately strong ridges; ventral valve apex with 8 teeth, apical teeth progressively more closely spaced; surface anterior to first tooth rugulose.  
 Color. Head, mesosoma and metasoma black with whitish and yellow marks. Head: black; clypeus, mandible except apex and ventral margin, mouthparts, supra-clypeal area, orbital band shortly interrupted at dorsal corner of eye, whitish (246,237,176); f7–9 entirely white, f10 almost entirely white, f6 and f11 white only at small portion. Mesosoma: black; collar, subcircular spot on mesoscutum, scutellum except apical margin, postscutellum, tegula, subalar ridge, central mark on mesopleuron reaching ventral margin and bordering dorsal edge of hypoepimeron, dorsal division of metapleuron, posterior mark covering 0.6 of metapleuron and lateral triangular marks on propodeum, whitish; fore and mid legs turning from light yellow to bright yellow towards apex, except posterior face of fore and mid coxa, dorsal face of fore and mid trochanters and femora and t5, blackish; hind coxa anterior 0.6 black, posterior 0.4 light yellow; hind trochanters sparsely marked with dark orange and blackish; hind femur dorsally light brown (139,081,051), ventrally blackish; hind tibia and tarsus bright yellow, lighter towards apex. Metasoma: black; T1–8 and S1–6 with posterior whitish stripes, at S1–6 covering most of their surface and progressively wider.   
 Male. Fore wing 4.95–6.02 mm long. Similar to female, except for the following: hind femur more or less uniformly dark brown or blackish; apical 0.2 of hind tibia blackish; apical 0.5 of hind t1 and t2–5 white; median depression on T1 much stronger.   
 Variation. Fore wing 9.10–10.04 mm long. Orbital band sometimes almost complete; axillar carinae sometimes brownish; one male with central mark on mesopleuron almost reaching posterior edge of subalar ridge; posterior mark on metapleuron covering 0.4–0.6 of its surface; stripe at dorsal face of fore trochanters sometimes reduced; mid tibia of male ventrally sometimes with pale brown stripe hind femur dorsally buff, brownish or black, ventrally brownish to black; apical 0.3 of hind t5 sometimes blackish; T1–2 sometimes with lateral yellowish marks. Specimen from Misiones with flagellum subapically moderately widened and strong median depression on T1. All whitish areas sometimes buff (215,167,098) or bright yellow (225,181,075); all black areas on legs and metasoma sometimes brownish.   
 Comments. Messatoporus orientalis is part of a group of five very close species; (see Comments under M. mesosternalis). Among these species, females can be differentiated from the apparently parapatric (see Distribution) M. semiaurantigaster sp. nov. by the T4–8 black with posterior yellowish stripes (vs. entirely orange); hind femur dark brown to blackish (vs. bright orange), hind tibia entirely yellow (vs. with apical blackish mark), t5 whitish (vs. blackish), and yellow marks yellow marks on propodeum small and distinctly separated medially (vs. propodeum with a single, arc-shaped though medially narrow mark). The males of the two species are almost undistinguishable (see Comments under M. semiaurantigaster).   
 Messatoporus orientalis can be isolated from the other close species M. mesosternalis, M. occidentalis sp. nov. and M. basiflavus sp. nov. by the following combination of characters: orbital band shortly interrupted at dorsal margin of eye; propodeum posteriorly with two small sublateral yellowish marks; hind coxa anteriorly blackish, posteriorly yellowish; hind femur dark brown or blackish.   
 Biology.Unknown.   
 Etymology. From the Latin orientalis, meaning “eastern”; in reference to its mostly eastern distribution along South America, in comparison to the very close species M. occidentalis.   
 Material examined. 23 ♀, 14 ♂♂. Holotype ♀ from BRAZIL, Espírito Santo, Domingos Martins, Pico do Eldorado, Pt. T 8, 26.XI–3.XII.2004, Malaise trap, MTTavares et al. (UFES). Mounted on triangle point. In good shape.   
 Paratypes: 1 ♀ from BRAZIL, Bahia, Encruzilhada, 980 m, XI.1974, MAlvarenga. (AEIC). 1 ♀ from BRAZIL Goiás, Barro Alto, Propriedade Pedro Ferreira, XI.2009, Malaise trap, MPimenta & LLBergamini. 1 ♀ from BRAZIL, Espírito Santo, Alfredo Chaves, Picadão, 8–15.X.2007, Malaise trap, COAzevedo et al.; 1 ♀, same data except Domingos Martins, Pico do Eldorado, Pt. T8, 26.XI–3.XII.2004, MTTavares et al.; 1 ♂, same data except Guarapari, Parque Estadual Paulo César Vinha, Restinga, Pt. 8, 2–9.XI.2006, BCAraújo & MSantos (UFES). 2 ♀ from BRAZIL, Minas Gerais, Águas Vermelhas, XII. 1983, 800 m, XII.1983, MAlvarenga. 1 ♀ from BRAZIL, Rio de Janeiro, Represa Rio Grande, XII.1967, MAlvarenga (AEIC). 1 ♂ from BRAZIL, Rio Claro, Floresta Estadual Edmundo Navarro de Andrade, 11.IX–1.X.2005, Malaise trap, JTDias et al. (UFES). 1 ♂ from BRAZIL, Paraná, Colombo, Embrapa Br 476, km 20, 2.II.1987, Malaise trap, PROFAUPAR; 1 ♀, same data except Guarapuava, Estação de águas Santa Clara, 28.X.1986; 1 ♀, same data except 6.IV.1987; 1 ♀ 1 ♂, same data except Jundiaí do Sul, Fazenda Monte Verde, 13.X.1986; 1 ♂, same data except 15.XII.1986; 2 ♂, same data except 20.X.1986; 1 ♂, same data except 24.XI.1986; 1 ♀, same data except 27.X.1986; 1 ♂, same data except 3.XI.1986; 2 ♂♂, same data except 6.X.1986; 1 ♀ 1 ♂, same data except 12.I.1987; 1 ♀, same data except 18.VII.1987; 1 ♀ 2 ♂, same data except 26.I.1987; 2 ♀, same data except 9.III.1987; 2 ♂♂, same data except Ponta Grossa, Fazenda IAPAR Br 376, 24.XI.1986 (DZUP). 1 ♀ from BRAZIL, Santa Catarina, Nova Teutônia, 300–500 m, III.1968, FPlaumann; 4 ♀, same data except I.1968; 1 ♀, same data except II.1968; 1 ♀, same data except XII.1967; 1 ♀, same data except 13.XII.1952 (AEIC); 1 ♀, same data except I.1968; 1 ♀, same data except II.1968 (CNCI). 1 ♂ from BRAZIL, Rio Grande do Sul, Arroio Grande, 101 m, 8.XI.2002, Malaise trap, RFKrüger; 1 ♀ 1 ♂, same data except Morro Redondo, 11.IV.2003 (UFES). 1 ♀ from URUGUAY, Cerro Largo, Sierra de Vaz, Rio Tacuari, 20 km SE Melo, 23–26.III.1963, JKBouseman (AMNH).   
 Distribution. Widely distributed at Atlantic Forest, from central to southern Brazil, including also Uruguay and northern Argentina (Misiones) (Fig. 351). It seems to be spatially separated from the very close species M. semiaurantigaster, which occurs from Espírito Santo to southern Bahia. However, the two species were not recorded at the same localities; at Espírito Santo, M. orientalis only occurs at highlands above 500 m, whereas M. semiaurantigaster is recorded from sea level localities (Fig. 361).
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 163-165, DOI: 10.11646/zootaxa.3634.1.1, http://zenodo.org/record/5262081