Messatoporus occidentalis 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 occidentalis

description: Messatoporus occidentalis Santos, sp. nov.   
(Figs 102, 192, 229, 349)  
 Female. Fore wing 9.28 mm. HEAD: Mandible with moderately sparse and long hairs; MLW 1.79; MWW 0.43; dorsal tooth in front view projected upwards, much longer than ventral tooth; ventral tooth triangular. MSM 0.3. Clypeus basally convex, apically abruptly flattened, centrally concave; CHW 2.55; CWW 2.3; apical area medially concave, laterally with distinct triangular lobes, its margin very sharp, raised. Antenna with 21 flagellomeres; flagellum strongly flattened and compressed on apical 0.3; 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 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 moderately wide, gena somewhat swollen and projected (as in Fig. 261).   
THORAX: Pronotum glabrate, shiny, impunctate, ventrally with strong wrinkles; epomia weak, complete, short, ending far from dorsal margin of pronotum, after diverging from pronotal collar distinctly curved. Mesoscutum moderately convex, flattened posteriorly, subcircular, 1.21 × as long as wide, glabrate, shiny, impunctate; notaulus reaching about 0.73 of mesoscutum length, moderately impressed, surface over notaulus not wrinkled; scuto-scutellar groove shallow, without wrinkles. Subalar ridge moderately projected; epicnemial carina reaching about 0.7 of distance to subalar ridge, irregular; sternaulus moderately strong, wide and shallow at posterior 0.25, strongly sinuous, smooth; scrobe moderately deep; mesopleural suture with strong longitudinal wrinkles along entire length. Mesosternum medially without transverse wrinkles or depressions; median portion of posterior transverse carina of the mesothoracic venter short, straight. Transverse sulcus at base of propodeum moderately wide, about 0.42 × as long as anterior area of propodeum, impunctate; metapleuron moderately punctate, without transverse wrinkles, dorsally sparsely pilose, ventrally moderately pilose; juxtacoxal carina absent. 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: 1.15 × as long as wide, shiny, sparsely pilose; anterior area scarcely punctate; spiracle elongate, SWL 4.6; anterior transverse carina medially straight. Propodeal wrinkles anteriorly faint, posteriorly strong, closely spaced, anteriorly complete, posteriorly mostly incomplete and overlapped, 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 curved; fore wing crossvein 1 cu-a basad of 1M+Rs by 0.43 of its own length; vein 2Cua 0.42 × as long as crossvein 2cu-a; bulla of crossvein 2m-cu placed on midlength; cell 1+2Rs small, APH 0.69, pentagonal, distinctly higher than wide, AWH 0.753; crossvein 3r-m fully spectral, 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 tubular, apically spectral, reaching wing margin; HW1C 1.32; vein Cub distinctly convex on posterior half, forming distinctly obtuse angle with vein Cua (basally curved); vein 2-1A reaching 0.85 of distance to posterior wing margin.  
METASOMA: First tergite short, about 0.33 × as long as T2–8, strongly depressed, ventrolaterally angled, dorsally glabrate, laterally densely pilose; T1LW 2.61; T1WW 1.73; spiracle on 0.52 of its length, distinctly prominent; median depression elongate, very shallow; lateral and median posterior depressions absent; ventrolateral carina absent, but traceable as limit between lateral and ventral portions. T2LW 1.15; T2WW 1.66; thyridium longer than wide, without small circular depression just behind it; T2–8 changing from covered with small, shallow foveae in T2–3 to minutely coriarious in T4–8, dorsally sparsely pilose, laterally moderately pilose. OST 0.99; ovipositor moderately stout, straight, basally cylindric, apically distinctly depressed; dorsal valve with four moderately strong ridges; ventral valve apex with 5 teeth, widely spaced; surface anterior to first tooth rugulose.  
 Color. Head, mesosoma and metasoma black and light yellow. Head: black; clypeus, mandible except apex, mouthparts, malar space, supra-clypeal area and complete orbital band, light yellow (238,226,151); f6–10 entirely white; f5 and f11 partially white. Mesosoma: black; collar, subcircular spot on mesoscutum, scutellar carina, scutellum, axillar carinae, postscutellum, tegula, subalar ridge, central mark on mesopleuron reaching ventral margin, dorsal division of metapleuron, small spot at metapleural triangle, posterior mark covering 0.4 of metapleuron and arc-shaped mark on propodeum, light yellow; fore and mid legs turning from light yellow to bright yellow towards apex, except small posterior mark at fore coxa, small marks between first and second mid trochanters, dorsal stripe at fore and mid femora, ventral stripe on basal 0.8 of fore tibia and both t5, blackish; hind coxa mostly bright orange (199,072,041), with large posterior light yellow spot and very narrow blackish line between orange and yellow areas; hind trochanters and femur bright orange, with small yellow marks at apex of trochanters and base of femur; basal 0.6 of hind tibia bright yellow, apical 0.4 blackish; basal 0.3 of t1 and apical 0.5 of t5, blackish; remainder of hind tarsus whitish. Metasoma: black; T1–7 and S2–6 with posterior light yellow stripes; T2 near thyridium with small orangish mark; T8 with lateral light yellow mark; S1 black; S2–6 anteriorly dark brown, with progressively larger light yellow posterior areas.   
 Male. Fore wing 4.82–8.70 mm long. More or less similar to female, but differing from it by the following characters: head more distinctly subspherical; mandible less projected and curved; occipital carina dorsally stronger, forming distinct flange; antenna with 22–26 flagellomeres; yellow mark at collar expanded and covering about 0.6 of pronotum surface; central mark on mesopleuron larger, covering about 0.7 of its surface; mesosternum mostly yellow; arc-shaped mark on propodeum wider; hind coxa yellow, with large lateral and mesal blackish marks; hind trochanters mostly blackish, its extreme apex yellow; hind femur extreme base yellow, with sub-basal and apical blackish marks; hind tibia blackish on apical 0.7.   
 Variation. Fore wing 7.76–10.04 mm long. Antenna with 21–30 flagellomeres; pronotal and pronotal wrinkles sometimes weak; metapleural triangle sometimes entirely yellow; metapleuron sparsely to densely punctate; fore coxa sometimes with posterior blackish mark; posterior face of mid tibia sometimes pale to bright orange; mid trochanters sometimes entirely yellow; hind coxa sometimes without black line; hind tibia sometimes with only apical 0.2 black; t5 with 0.5–1.0 black; black areas at metasoma sometimes turning to dark brown; brownish marks at S5–6 sometimes almost indistinct. Specimens from Maquiné and Cochabamba with yellow areas at hind tibia and tarsus turning to whitish, blackish areas turning to deep yellow; light yellow areas sometimes pale yellow (234,219,126) or whitish (239,233,206). Two specimens from Trinidad with anterior area of hind coxa blackish, one also with mid coxa with small blackish spot, mid tarsus blackish and hind femur with basal and apical blackish spots.   
 Comments. Messatoporus occidentalis is part of a group of five very close species; (Figs 101–105; see Comments under M. mesosternalis). Among these species, it is more similar to M. basiflavus sp. nov., from which it can be differentiated by having T1 black at anterior 0.8, whitish or yellowish on apical 0.2 (vs. laterally entirely yellow, dorsally yellow on basal 0.4 and posterior 0.2); S1 black (vs. yellowish); fore and mid femora whitish or light yellow, dorsally with distinct longitudinal brown stripe (vs. orange, fore femur with weak brownish mark on basal 0.3, mid femur without brown marks); mid coxa mostly whitish (vs. mostly orange); and ovipositor ventral valve with five teeth (vs. nine).   
 Messatoporus occidentalis can be isolated from the other close species M. mesosternalis, M. orientalis sp. nov. and M. semiaurantigaster sp. nov. by the following combination of characters: orbital band complete; propodeum with distinctly arc-shaped whitish or yellowish mark; hind coxa, trochanter and femur mostly orange; hind tibia bright yellow on basal 0.75, blackish on apical 0.25; T2–8 black with posterior whitish or yellowish stripes.   
 Biology. Unknown.   
 Etymology. From the Latin occidentalis, meaning “western”; in reference to its mostly western distribution along South America, in comparison to the very close species M. orientalis.   
 Material examined. 7 ♀, 7 ♂♂, 1 specimen of unknown sex. Holotype ♀ from TRINIDAD, Curepe, 7–9.XII.1977, Malaise trap (CNCI). Pinned. In good shape.   
 Paratypes: 1 specimen of unknown sex from TRINIDAD, VII.1899, FWUrich (USNM). 1 ♀ from TRINIDAD, Curepe, 28–30.III.1979, Malaise trap; 1 ♂, same data except 31.XI.1978; 1 ♂, same data except 9 km N Arima, Simla Reserve Station, 240 m, tropical forest, 6–10.VI.1993, Malaise trap, SPeck & JPeck, 93-10 (CNCI); 1 ♂ from TRINIDAD, Caroni, 2.III.1961, NGopaul (AMNH). 1 ♂ from GUYANA, Bartica, 4.VI.1901, [Higneh?]. (ZMHB); 1 ♂, same data except Kartabo, WMyers; 1 ♀, same data except 16.VIII.1920; 1 ♂, same data except 12.V.1924 (AMNH). 1 ♂ from COLOMBIA, Vichada, PN Tuparro, Cerro Tomas, 140 m; 18–28.VIII.2000, Wvilalba (AEIC). 1 ♀ from ECUADOR, Sucumbios, Sacha Lodge, 270 m, 4–14.III.1994, Malaise trap, PHibbs. 1 ♀ from BOLIVIA, Cochabamba, Vila Tunari, 325 m, 4–6.IX.2000, Malaise trap, Hauser (CNCI). 1 ♀ from BRAZIL, Amazonas, Parque Nacional Jaú, Rio Carabiani, Igarapé, 29–31.VII.1995, Malaise trap, Rafael & Jvida (INPA). 1 ♀ from BRAZIL, RS, Maquiné, Estação Experimental FEPAGRO, secondary forest, Transect 4, 10–12.I.2006, fogging, ABarcellos et al (UFES).   
 Distribution. Messatoporus occidentalis is recorded from many widely spaced sites in South America, but it seems to be more common at the north of the continent (Fig. 349). Except for one record at Rio Grande do Sul, southern Brazil, the species is spatially separated from the very close M. semiaurantigaster and M. orientalis, which have parapatric distribution along eastern South America.
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 159-161, DOI: 10.11646/zootaxa.3634.1.1, http://zenodo.org/record/5262081