Messatoporus caxiuanensis 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 caxiuanensis

description: Messatoporus caxiuanensis Santos, sp. nov.   
(Figs 82, 199, 233, 310)  
 Female. Fore wing 6.75 mm. HEAD: Mandible densely covered with long hairs; MLW 1.59; MWW 0.43; dorsal tooth in front view projected upwards, much longer than ventral tooth; ventral tooth triangular. MSM 0.22. Clypeus basally evenly convex, apically gradually flattened, centrally concave; CHW 2.08; CWW 3; apical area medially straight, laterally with distinct triangular lobes, its margin regular, not raised. Antenna with 25 flagellomeres; flagellum uniform; apex of apical flagellomere much narrower than base, distinctly tapered. Supra-antennal area shiny, scarcely punctate, not striate near antennal sockets, ventrally very weakly concave, medially with a distinct depression but without a distinct line. 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 sparsely pilose, shiny, finely punctate, ventrally weakly striate; epomia weak, complete, short, ending far from dorsal margin of pronotum, after diverging from pronotal collar approximately straight. Mesoscutum strongly and uniformly convex, subcircular, 1.14 × as long as wide, densely covered with short hairs, shiny, densely punctate; notaulus reaching about 0.72 of mesoscutum length, moderately impressed, surface over notaulus with weak and short transverse wrinkles; scuto-scutellar groove shallow, without wrinkles. Subalar ridge weakly projected; epicnemial carina reaching about 0.85 of distance to subalar ridge, distinctly sinuous; sternaulus complete but weak, strongly sinuous, with vestigial vertical wrinkles; scrobe very shallow; mesopleural suture with strong longitudinal wrinkles along entire length. Mesosternum medially with short transverse wrinkles; median portion of posterior transverse carina of the mesothoracic venter short, distinctly arched forwards. Transverse sulcus at base of propodeum very wide, about 0.7 × as long as anterior area of propodeum, laterally with weak longitudinal wrinkles, medially not wrinkled; metapleuron punctate-rugulose, with vestigial wrinkles, densely covered with very short hairs; juxtacoxal carina absent. Fore tibia distinctly swollen. Mesal lobe of t4 with 3–4 bristles. Hind coxa with weak punctures separated by about their own diameter.  
PROPODEUM: 1.23 × as long as wide, shiny, sparsely pilose; anterior area moderately punctate; spiracle elliptic, SWL.003; anterior transverse carina medially slightly arched forwards. Propodeal wrinkles moderately strong, very closely 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 0.4; 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 0.43 of its own length; vein 2Cua 0.49 × as long as crossvein 2cu-a; bulla of crossvein 2m-cu placed on midlength; cell 1+2Rs small, APH 0.79, pentagonal, about as high as wide, AWH 0.96; 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 very weakly sinuous; 4-M semi-spectral, irregular. Hind wing vein 1- M forming distinctly obtuse angle with vein Cua; vein 2-Rs entirely tubular, apically weaker, reaching wing margin; HW1C 1.23; vein Cub distinctly convex on posterior half, forming distinctly obtuse angle with vein Cua (basally curved); vein 2-1A reaching 0.93 of distance to posterior wing margin.  
METASOMA: First tergite short, about 0.34 × as long as T2–8, strongly depressed, ventrolaterally rounded, dorsally glabrate, laterally moderately pilose; T1LW 3.73; T1WW 1.42; spiracle on 0.52 of its length, slightly prominent; median depression elongate, distinct; lateral and median posterior depressions absent; ventrolateral carina absent, but traceable as limit between lateral and ventral portions. T2LW 1.27; T2WW 2.16; thyridium much longer than wide, without small circular depression just behind it; T2–8 covered with small, shallow foveae, densely and uniformly pilose. OST 0.85; ovipositor moderately stout, straight, basally cylindric, apically slightly depressed; dorsal valve with four moderately strong ridges; ventral valve apex with 12 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, basal 0.3 of mandible, mouthparts, part of malar space, supra-clypeal area, scape ventrally and complete orbital band, whitish (234,222,177); scape dorsally and pedicel, brown; f7–14 entirely white, f8 and f15 mostly white, f7 with white apical spot. Mesosoma: black; pronotum except posterior mark covering 0.2 of its surface, subcircular spot on mesoscutum, scutellar carina, scutellum, axillar carinae near wing base, tegula, subalar ridge, central mark covering almost entire mesopleuron, connected to subalar ridge, mesosternum, dorsal division of metapleuron, most of transverse sulcus, metapleuron except apical margin and arc-shaped mark on propodeum, whitish; fore and mid coxae and first trochanters whitish, except basal and apical brown marks at mid coxa and ventral orange mark at mid trochanter; fore femur pale yellow with weak brownish stripe on basal 0.6; mid femur light orange; fore and mid tibiae whitish with ventral brownish stripe on basal 0.7; fore tarsus whitish except t5 blackish; mid tarsus blackish except t4 ventrally white; hind coxa whitish with three longitudinal stripes, anterior one extending on basal 0.7, median one on apical 0.4, both stripes connected by a brownish area; posterior stripe reaching apical and basal margins, basally much wider; first trochanter brownish on basal 0.5, black on apical 0.5; second trochanter black with ventral orange spot on apical 0.3; hind femur light orange (215,123,050); basal 0.5 of hind tibia, apical 0.8 of t1 and t2–5, white; apical 0.5 of hind tibia, tibial spurs and basal 0.2 of t1, blackish. Metasoma: black; T1 anterior 0.4 dorsally and posterior 0.2 whitish; S1 whitish; T2–7 with posterior and lateral whitish stripes, T8 only with lateral stripe; S2–6 whitish, with lateral brownish marks.   
 Male. Unknown.   
 Comments. Very similar to M. atlanticus sp. nov., from which it can be differentiated by orbital band complete (vs. shortly interrupted at dorsal margin of eye); dorsal margin of pronotum whitish and connected to whitish mark at collar (vs. black); hind femur bright orange (vs. dark brown); propodeal wrinkles distinctly curved backwards (vs. mostly slightly curved or somewhat sinuous); and central mark on mesopleuron narrowly connected to mark at subalar ridge (vs. not connected).   
 Biology. Unknown.   
 Etymology. Latinized form of the word Caxiuanã, in reference to the species type-locality.   
 Material examined. Holotype ♀ from BRAZIL, Pará, Melgaço, Floresta Nacional de Caxiuanã, Trilha Igarapé Tijucaquara, margem do Igapó, Pt. P05191, 21–26.XI.2003, Malaise trap, APAguiar et al (MPEG). Mounted on triangle point. Left hind tarsus missing; otherwise in good shape.   
 Distribution. Recorded only from the type locality, in eastern Amazon Basin, Brazil (Fig. 310).
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 86-87, DOI: 10.11646/zootaxa.3634.1.1, http://zenodo.org/record/5262081