Messatoporus semiaurantigaster 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 semiaurantigaster

description: Messatoporus semiaurantigaster Santos, sp. nov.   
(Figs 105, 129, 191, 226, 287, 361)  
 Female. Fore wing 7.50 mm. HEAD: Mandible densely covered with long hairs; MLW 1.6; MWW 0.37; dorsal tooth in front view projected upwards, much longer than ventral tooth; ventral tooth triangular. MSM 0.19. Clypeus basally convex, apically abruptly flattened, centrally concave; CHW 2.67; CWW 2.29; apical area medially straight, laterally with distinct triangular lobes, its margin very sharp, raised. Antenna with 21 flagellomeres; flagellum strongly flattened and compressed on apical 0.3, or 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 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 regular (as in Fig. 260).   
THORAX: Pronotum glabrous, shiny, impunctate, with moderately strong striation restricted to ventral corner; epomia moderately strong, complete, short, ending far from dorsal margin of pronotum, after diverging from pronotal collar approximately straight. Mesoscutum moderately convex, flattened posteriorly, subcircular, 1.15 × as long as wide, sparsely pilose, shiny, asperous; notaulus reaching about 0.68 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 moderately strong, wide and shallow at posterior 0.25, strongly sinuous, with vestigial vertical wrinkles; scrobe very shallow; mesopleural suture with weak longitudinal wrinkles along entire length. Mesosternum medially with a longitudinal series of depressions; median portion of posterior transverse carina of the mesothoracic venter moderately long, slightly arched forwards. Transverse sulcus at base of propodeum moderately wide, about 0.48 × as long as anterior area of propodeum, impunctate; metapleuron moderately punctate, without transverse wrinkles, dorsally moderately pilose, ventrally densely 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: 1.17 × as long as wide, mat, moderately pilose; anterior area scarcely punctate; spiracle elliptic, SWL 3.11; anterior transverse carina medially slightly arched forwards. Propodeal wrinkles anteriorly faint, posteriorly strong, closely spaced, central wrinkles complete, anterior and posterior ones 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 more or less uniformly curved, 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 0.34 of its own length; vein 2Cua 0.36 × as long as crossvein 2cu-a; bulla of crossvein 2m-cu placed on midlength; cell 1+2Rs small, APH 0.64, pentagonal, about as high as wide, AWH 1.02; crossvein 3r-m fully spectral, 2r-m and 3r-m subparallel, 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 straight angle with vein Cua; vein 2-Rs entirely tubular, apically weaker, reaching wing margin; HW1C 1.14; 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 0.34 × as long as T2–8, strongly depressed, ventrolaterally angled, dorsally glabrate, laterally densely pilose; T1LW 3.32; T1WW 1.51; spiracle on 0.49 of its length, distinctly prominent; median depression elongate, very shallow; lateral and median posterior depressions absent; ventrolateral carina absent. T2LW 1.43; T2WW 1.88; thyridium longer than wide, without small circular depression just behind it; T2–8 minutely and very weakly coriarious, densely and uniformly pilose. OST 0.94; ovipositor moderately stout, straight or slightly upcurved, basally cylindric, apically slightly depressed; dorsal valve with four moderately strong ridges; ventral valve apex with 6 teeth, apical teeth progressively more closely spaced; surface anterior to first tooth rugulose.  
 Color. Head and mesosoma black and whitish, metasoma orange, black and whitish. Head: black; clypeus, mandible except apex, mouthparts, supra-clypeal area, orbital band shortly interrupted at dorsal corner of eye, light yellow (225,203,113); f7–10 entirely white; f6 and f11–12 only dorsally white, at f6 and f11 at about half of their length. 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, 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 posterior face of fore and mid coxa, small marks between first and second mid trochanters, dorsal stripe at fore and mid femora and t5, blackish; hind coxa anterior 0.5 black, posterior 0.5 light yellow; hind trochanters blackish, with apical margin orangish; hind femur deep orange (215,118,049), apical 0.1 blackish; hind tibia bright yellow, apical 0.15, tibial spurs, basal 0.2 of t1 and t5, blackish; apical 0.8 of t1 and t2–4, whitish. Metasoma: mostly orange; T1–2 and S1 black with posterior bright yellow stripe; T2 anterior 0.4 blackish, median 0.3 orange and posterior 0.3 bright yellow; T8 posteriorly marked with blackish.   
 Male. Fore wing 6.35–8.22 mm long. Generally similar to female, except for the following: antenna with 24–25 flagellomeres; arc-shaped mark on propodeum dorsally interrupted (black marks connected), making two separate somewhat triangular marks; dorsal black stripe at fore and mid femora distinct only on basal 0.1–0.2, remainder of femora orangish; fore and mid tibia light fuscous, tarsus basally dark fuscous, apically whitish except t5; T1–7 blackish with apical bright yellow stripes, S2–7 light brown with posterior yellow stripes.   
 Variation. Fore wing 6.02–11.38 mm long. Orbital band sometimes complete, but much narrower at dorsal margin of eye; scrobe sometimes shallow; arc-shaped mark on propodeum sometimes very narrow dorsally; dorsal face of mid first trochanter almost entirely blackish; fore and mid t5 sometimes fuscous; ventral face of hind femur sometimes black on apical 0.3; T2 sometimes anteriorly dark brown; black and yellow areas at T3 sometimes reduced; T2–3 sometimes without orange areas; T8 sometimes reddish brown; yellow tones varying from very light yellow to buff. Specimen from Nova Teutonia with all black areas dark brown and propodeal wrinkles closely spaced.   
 Comments. Messatoporus semiaurantigaster is part of a group of five very close species; (Figs 101–105; see Comments under M. mesosternalis). Among these species, females can be promptly identified by the T4–8 entirely orange. They can also be isolated from the apparently parapatric (see Distribution) M. orientalis sp. nov. by the hind femur bright orange (vs. dark brown to blackish), hind tibia with apical blackish mark (vs. entirely yellow), t5 blackish (vs. whitish), and yellow mark on propodeum arc-shaped, though medially narrow (vs. yellow marks small distinctly separated). Also readily differentiated from M. occidentalis sp. nov. and M. basiflavus sp. nov. by the hind coxa yellow and blackish and trochanters blackish (vs. hind coxa and trochanters orange).   
 Males of M. semiaurantigaster, however, have the T2–8 black with posterior yellowish stripes, as in other species with orange metasoma (M. euryoikos sp. nov., M. dissidens sp. nov.). They also have the yellow mark on propodeum medially interrupted, forming two small sublateral spots. At the same time, males of M. orientalis often have the hind femur partially to mostly orange, although usually dark brown. Therefore, the males of the two species are distinguishable only by the hind tibia more extensively black in M. semiaurantigaster (blackish on apical 0.7–0.8, vs. only on apical 0.2 in M. orientalis).   
 Biology. Unknown.   
 Etymology. From the New Latin aurantium, meaning “orange”, and the Latin words semis, meaning “half”, and gaster, meaning “stomach”; in reference to the partially orange metasoma.   
 Material examined. 11 ♀, 7 ♂♂. Holotype ♀ from BRAZIL, Bahia, Coaraci, Pt. 2, 26.XI.2002, Malaise trap, JCardoso & JMaia (UFES). Mounted on triangle point. In good shape.   
Paratypes: 1 ♀ 1 ♂ from BRAZIL, Bahia, Ipiaú, Fazenda Petrolina, Sítio Casca, West, 15.II.2007, Malaise trap, JCardoso & JMaia; 1 ♀, same data except East, 18.III.2007; 1 ♀, same data except Pt. 5; 1 ♂, same data except Iguaí, Fazenda Montevideo, Pt. 7, 30.XI.2002; 1 ♂, same data except Itororó, fazenda Guanabara, Pt. 3, 25.XI.2002; 1 ♀, same data except Ubaitaba, Fazenda Fortaleza, 13.XII.2003; 1 ♂, same data except Pt. 2; 2 ♂♂, same data except Ituberá, Fazenda Vale da Juliana, 26.I.2008, “ Banana Teste ” (UFES). 2 ♀ from BRAZIL, Espírito Santo, Linhares, IX.1972, Malvarenga (AEIC). 1 ♀, same data except CEPLAC, Pt. 3, 30.VI.2001, CVillemant, “cacau, borda”; 1 ♀, same data except Cariacica, Reserva Biológica de Duas Bocas, 26.IV–3.V.2005, Malaise trap, RKawada; 1 ♀, same data except Guarapari, Parque Estadual Paulo César Vinha, Restinga, 15–23.V.2006; 1 ♂, same data except 2–9.XI.2006, BAraújo & MSantos; 1 ♀ from BRAZIL, Minas Gerais, Parque Estadual do Rio Doce, Trilha do Vinhático, Pt. 2, 7.XI.2002, Malaise trap, JCRFontenelle (UFES).  
 Distribution. Recorded from the Atlantic Forest from Espírito Santo to southern Bahia (Fig. 361). It seems to be spatially separated from the two very close species M. orientalis and M. occidentalis. The former is widely distributed at southern and southeastern Brazil, but all of the northernmost records are from highlands, indicating preference to colder, higher areas. Both M. orientalis and M. semiaurantigaster occur at Espírito Santo, but M. orientalis is only found above 500 m, whereas all records of M. semiaurantigaster from Espírito Santo were from sea level or close. Messatoporus occidentalis, for its turn, have almost all records at northern South America, from Bolivia to Trinidad (see below).
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 178-180, DOI: 10.11646/zootaxa.3634.1.1, http://zenodo.org/record/5262081