Messatoporus atlanticus 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 atlanticus

description: Messatoporus atlanticus Santos, sp. nov.   
(Figs 81, 220, 302)  
 Female. Fore wing 9.28 mm. HEAD: Mandible densely covered with long hairs; MLW 1.56; MWW 0.3; dorsal tooth in front view projected upwards, much longer than ventral tooth; ventral tooth triangular. MSM 0.17. Clypeus basally convex, apically abruptly flattened, centrally concave; CHW 2.22; CWW 1.43; apical area medially concave, laterally with distinct triangular lobes, its margin very sharp, raised. Antenna with 22 flagellomeres; flagellum uniform; apex of apical flagellomere much narrower than base, distinctly tapered. Supra-antennal area shiny, very 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.   
THORAX: Pronotum sparsely pilose, shiny (less shiny), mostly impunctate, scarcely punctate at dorsal corner and collar, with moderately strong 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 moderately convex, flattened posteriorly, subcircular, 1.22 × as long as wide, densely covered with short hairs, shiny, densely punctulate; notaulus reaching about 0.7 of mesoscutum length, moderately impressed, surface over notaulus with weak and short transverse wrinkles; scuto-scutellar groove moderately deep, without wrinkles or 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 vestigial vertical wrinkles; scrobe very shallow; 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 and almost indistinct, slightly arched forwards. Transverse sulcus at base of propodeum very wide, about 1.05 × as long as anterior area of propodeum, impunctate; metapleuron densely and finely punctulate, without transverse wrinkles, densely covered with very short hairs; 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 about their own diameter.  
PROPODEUM: 1.23 × as long as wide, mat, moderately pilose; anterior area scarcely punctate (and faintly coriarious); spiracle elongate, SWL 3.6; 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; crossvein 1m-cu irregular, limit between 1m-cu and 1- Rs+M more or less traceable; vein 1M+Rs anteriorly straight, posteriorly curved; fore wing crossvein 1 cu-a basad of 1M+Rs by 0.49 of its own length; vein 2Cua 0.51 × 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 0.85; crossvein 3r-m fully spectral, 2r-m and 3r-m distinctly convergent, about same length; vein 3-M about as long as 2-M; 4-Rs distinctly sinuous; 4-M tubular, straight. Hind wing vein 1-M forming straight angle with vein Cua; vein 2-Rs entirely tubular, apically weaker, reaching wing margin; HW1C 1.22; vein Cub distinctly convex on posterior half, forming distinctly obtuse angle with vein Cua (basally curved); vein 2-1A reaching 0.91 of distance to posterior wing margin.  
METASOMA: First tergite moderately long, about 0.38 × as long as T2–8, somewhat depressed, ventrolaterally rounded, dorsally glabrate, laterally moderately pilose; T1LW 3.48; T1WW 2.09; spiracle on 0.5 of its length, distinctly prominent; median depression subcircular, distinct; lateral and median posterior depressions absent; ventrolateral carina weak, medially interrupted. T2LW 1.09; T2WW 2.13; thyridium longer than wide, without small circular depression just behind it; T2–8 covered with small, shallow foveae, densely and uniformly pilose. OST 1.03; ovipositor moderately stout, straight, basally cylindric, apically distinctly depressed; dorsal valve with five moderately strong ridges; ventral valve apex with 11 teeth, apical teeth progressively more closely spaced; surface anterior to first tooth rugulose.  
 Color. Head, mesosoma and metasoma black with whitish marks. Head: black; clypeus, mouthparts, supraclypeal area, ventral spot at scape and orbital band shortly interrupted at dorsal margin of eye, pale yellow (222,186,118); most of scape ventrally, dark brown; f8–12 entirely white, f7 and f13 partially white. Mesosoma: black; collar, propleuron, subcircular spot on mesoscutum, scutellar carina, scutellum, axillar carinae laterally, tegula, subalar ridge, central mark covering 0.8 of mesopleuron (with small black spot at scrobe), mesosternum (area over sternaulus black), dorsal division of metapleuron, transverse sulcus centrally, metapleuron and arcshaped mark on propodeum, whitish; fore and mid coxa whitish with longitudinal blackish mark; fore and mid first trochanters whitish with small blackish mark basally; fore second trochanter, femur, tibia and tarsus, light yellow, except brownish dorsal mark at femur; mid second trochanter and femur light orange, femur with dorsal brownish stripe; mid tibia and tarsus light yellow, t5 blackish; hind coxa whitish, with three longitudinal marks, anterior one extending on basal 0.6, median one on apical 0.6 and connected to posterior mark, extended at entire length of coxa; hind first trochanter whitish with basal blackish mark, second trochanter blackish with apical yellow mark; hind femur blackish, with ventral mark on basal 0.5 light yellow; hind tibia and basal 0.4 of t1, bright yellow (236,210,113); apical 0.6 of t1 and t2–5, whitish. Mesosoma: black, turning to dark brown towards posterior tergites; anterior 0.5 of T1 dorsally whitish; T1–8 with posterior and lateral whitish stripe; S1–7 whitish, S3–6 with lateral brown mark.   
 Male. Fore wing 6.75–7.49 mm long. Very similar to female, except for the following: antenna with 20–25 flagellomeres; yellow marks on mesopleuron more extensive; apical 0.2 of hind tibia and basal 0.3 of t1, blackish; fore coxa entirely whitish, mid coxa with only small blackish marks; mid tarsus blackish; cell 1+2Rs smaller, APH about 0.35; T2–8 laterally dark brown, whitish stripes restricted to posterior margin.   
 Variation. Fore wing 8.57–10.06 mm long. Orbital band sometimes complete; antenna with 23–26 flagellomeres; pronotum of males sometimes entirely whitish; yellow mark at hind femur sometimes very small. Specimen from Nova Teutônia with median posterior depression of T1 distinct. All black areas sometimes reddish brown; whitish marks sometimes bright yellow.   
 Comments. Very similar to M. caxiuanensis sp. nov., from which it can be differentiated by orbital band shortly interrupted at dorsal margin of eye (vs. complete); dorsal margin of pronotum black (vs. whitish and connected to whitish mark at collar); hind femur dark brown (vs. bright orange); propodeal wrinkles mostly slightly curved or somewhat sinuous (vs. distinctly curved backwards); and central mark on mesopleuron not connected to mark at subalar ridge (vs. narrowly connected).   
 Biology. Unknown.   
 Etymology. From a Latinized form of Atlantic; in reference to its distribution record, restricted to the Atlantic Forest domain, as opposed to the very similar species M. caxiuanensis, exclusively Amazonic.   
 Material examined. 10 ♀, 5 ♂♂. Holotype ♀ from BRAZIL, Espírito Santo, Santa Maria de Jetibá, Fazenda Clarindo Kruger, Pt. T 6, 29.XI–6.XII.2002, Malaise trap, MTTavares et al. (UFES). Mounted on triangle point. In good shape.   
 Paratypes: 1 ♂ from BRAZIL, Espírito Santo, Santa Maria de Jetibá, Fazenda Paulo Seick, Área 1, Pt. B 3, 29.XI–6.XII.2002, Malaise trap, MTTavares et al. (UFES). 1 ♀ from BRAZIL, Paraná, Guarapuava, Estação de águas Santa Clara, 20.X.1986, Malaise trap, PROFAUPAR; 1 ♀, same data except 27.X.1986; 1 ♂, same data except 5.I.1987; 1 ♀, same data except 6.IV.1987; 1 ♀, same data except Ponta Grossa, Reserva IAPAR, Br 376, 13.X.1986; 1 ♀ 1 ♂, same data except Telêmaco Borba, Reserva Samuel Klabin, 1.XII.1986; 1 ♂, same data except 13.X.1986 (DZUP). 1 ♀ from BRAZIL, Santa Catarina, Nova Teutônia, 300–500 m, 26.III.1954, FPlaumann; 1 ♀, same data except 22.X.1952 (AEIC); 1 ♀, same data except I.1969; 1 ♀, same data except XI.1968; 1 ♂, same data except II.1968 (CNCI).   
 Distribution. Atlantic Forest in southern and southeastern Brazil (Fig. 302).
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 72-74, DOI: 10.11646/zootaxa.3634.1.1, http://zenodo.org/record/5262081