Messatoporus concavivenus Santos, 2013

Santos, Bernardo F. & Aguiar, Alexandre P., 2013, <strong> Phylogeny and revision of <em> Messatoporus </ em> Cushman (Hymenoptera, Ichneumonidae, Cryptinae), with descriptions of sixty five new species </ strong>, Zootaxa 3634 (1), pp. 1-284 : 95-97

publication ID	https://doi.org/ 10.11646/zootaxa.3634.1.1
publication LSID	lsid:zoobank.org:pub:81906FA2-FB3C-4F02-9AF9-449BC73F3BEE
persistent identifier	https://treatment.plazi.org/id/3629866A-FFC0-2E27-B8BF-FB7AFC64B205
treatment provided by	Felipe
scientific name	Messatoporus concavivenus Santos
status	sp. nov.

Treatment

Messatoporus concavivenus Santos , sp. nov.

( Figs 121 View FIGURES 119–123 , 180 View FIGURES 180–188 , 314 View FIGURES 313–320 )

Female. Unknown.

Male. Fore wing 6.8 mm. HEAD: Mandible densely covered with long hairs; MLW 2.25; MWW 0.31; dorsal tooth in front view projected upwards, much longer than ventral tooth; ventral tooth triangular. MSM 0.44. Clypeus basally convex, apically abruptly flattened, centrally concave; CHW 2.23; CWW 204; apical area medially concave, laterally with distinct triangular lobes, its margin very sharp, raised. Antenna with 24 flagellomeres; flagellum uniform. Supra-antennal area shiny, scarcely punctate, not striate near antennal sockets, ventrally and around ocelli distinctly concave, medially with a distinct depression but without a distinct line. Occipital carina dorsally acuminate, fading out at distance distinctly longer than basal width of mandible from the hypostomal carina. Temple and gena moderately wide, gena regular (as in Fig. 260 View FIGURES 260–271. 260–261 ).

THORAX: Pronotum glabrate, shiny, impunctate, with weak and short wrinkles at ventral half of posterior margin; epomia weak, complete, moderately long, ending near dorsal margin of pronotum, after diverging from pronotal collar approximately straight. Ovoid, 1.25 × as long as wide, anteriorly densely pilose, posteriorly sparsely pilose, shiny, anteriorly scarcely punctate, posteriorly almost impunctate; notaulus reaching about 0.73 of mesoscutum length, moderately impressed, surface over notaulus not wrinkled; scuto-scutellar groove moderately deep, without wrinkles. Subalar ridge weakly projected; epicnemial carina reaching about 0.6 of distance to subalar ridge, more or less uniformly curved; sternaulus moderately strong, wider on posterior apex, strongly sinuous, with vestigial vertical wrinkles; scrobe moderately deep; mesopleural suture ventrally with weak longitudinal wrinkles, wrinkles dorsally vestigial. Mesosternum medially with short transverse wrinkles; median portion of posterior transverse carina of the mesothoracic venter short and almost indistinct, straight. Transverse sulcus at base of propodeum moderately wide, about 0.64 × as long as anterior area of propodeum, asperous; metapleuron densely punctate, without transverse wrinkles, moderately pilose; juxtacoxal carina represented by very short ridges. Hind coxa with moderately strong punctures separated by more than their own diameter.

PROPODEUM: 1.22 × as long as wide, shiny, moderately pilose; anterior area almost impunctate; spiracle elliptic, SWL 1.87; anterior transverse carina medially slightly arched backwards. Propodeal wrinkles anteriorly faint, posteriorly strong, closely spaced, mostly complete, mostly slightly curved or somewhat sinuous; posterior transverse carina faintly suggested as a stronger wrinkle.

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 0.47 of its own length; vein 2Cua 0.39 × as long as crossvein 2cu-a; bulla of crossvein 2m-cu placed on midlength; cell 1+2Rs of moderate size, APH 0.91, pentagonal, about as high as wide, AWH 0.94; crossvein 3r-m fully spectral, 2r-m and 3r-m distinctly convergent, 3r-m distinctly shorter; vein 3-M about as long as 2-M; 4-Rs distinctly sinuous; 4-M spectral, irregular. Hind wing vein 1-M forming distinctly obtuse angle with vein Cua; vein 2-Rs tubular, apically spectral, reaching wing margin; HW1C 0.71; vein Cub slightly concave, forming distinctly obtuse angle with vein Cua (basally curved); vein 2-1A reaching 0.72 of distance to posterior wing margin.

METASOMA: First tergite short, about 0.27 × as long as T2–8, somewhat depressed, ventrolaterally angled, dorsally glabrate, laterally moderately pilose; T1LW 6.05; T1WW 1.58; spiracle on 0.48 of its length, slightly prominent; median depression elongate, very shallow; lateral and median posterior depressions absent; ventrolateral carina weak, medially interrupted. T2LW 2.52; T2WW 2.5; thyridium longer than wide, without small circular depression just behind it; T2–8 densely, finely punctate, densely and uniformly pilose.

Color. Head and mesosoma black and whitish, metasoma bright orange. Head: black; clypeus, mandible except apex, mouthparts, malar space, supra-clypeal area and orbital band shortly interrupted at dorsal margin of eye, whitish (232,215,148); f10–13 entirely white, f14 partially white. Mesosoma: black; anterior 0.7 of pronotum, propleuron, subcircular spot on mesoscutum, scutellum, tegula, subalar ridge, mesopleuron and epicnemium except sparse black marks, mesosternum, dorsal division of metapleuron, metapleural triangle, posterior 0.6 of metapleuron and posterior 0.6 of posterior area of propodeum, except for median dark line, whitish; fore and mid coxae, first trochanters and tibiae, whitish; fore and mid second trochanter and femur dorsally brown, gradually turning to whitish ventrally; fore tarsus gradually turning from whitish to dark fuscous; mid tarsus dark brown; hind coxa dark brown, apical 0.2 and posterior face whitish; hind first trochanter ventrally whitish, dorsally dark brown; second trochanter mostly blackish, its extreme apex light orange; hind femur mostly bright orange, its extreme base light orange, dorsally with narrow longitudinal brown stripe, apical 0.2 blackish; basal 0.25 of hind tibia and t2–4, white; apical 0.75 of hind tibia gradually changing from light brown to blackish; t1 and t5 blackish. Metasoma: bright orange (202,115,042); T1–7 with progressively shorter and lighter anterior brown areas, from dark brown (087,068,049) at anterior 0.8 of T1 to light brown (103,059,027) at anterior 0.4 of T7.

Variation. Mesopleuron sometimes almost entirely whitish; hind coxa anteriorly pale orange with blackish longitudinal stripe short and narrow; T1 sometimes dark orange, dorsally with pale basal mark, apical whitish stripe almost indistinct; all dark areas varying from black to brown (138,079,034).

Comments. Messatoporus concavivenus can be mistaken as the male of M. dissidens sp. nov., mainly by the color pattern of legs and metasoma, and because both species seem to have a close geographic distribution ( Uruguay and northern Argentina in M. dissidens , southern Brazil in M. concavivenus ). However, the males of M. dissidens , have the metasomal tergites anteriorly dark brown, posteriorly pale yellowish, as in some other species with orange metasoma ( M. euryoikos sp. nov., M. semiaurantigaster sp. nov.). In almost everything else, they are very similar to the females, whereas M. concavivenus differs considerably from the females of M. dissidens in the color pattern of the mesosoma, and also in general morphology features like clypeus centrally concave (vs. straight); supra-antennal area not striate near antennal sockets (vs. distinctly striate), with a distinct median depression (vs. without median depression); epomia moderately long, approximately straight (vs. short and distinctly curved); fore wing vein 3-M about as long as 2-M (vs. distinctly longer); and hind wing vein Cub slightly concave (vs. distinctly convex on posterior half, otherwise straight).

Biology. Unknown.

Etymology. From the Latin words concavus, meaning “concave”, and vena, meaning “vein”; in reference to the slightly concave hind wing vein Cub, unusual among species of Messatoporus .

Material examined. 5 ♂♂. Holotype ♂ from BRAZIL, Rio Grande do Sul, Morro Redondo , 101 m, 5.III.2003, Malaise trap, RFKrüger ( UFES). Mounted on triangle point. Right mid leg missing; otherwise in good shape.

Paratypes: 1 ♂ from BRAZIL, Santa Catarina, Nova Teutonia , 300–500 m, 1.I.1960 , FPlaumann; 1 ♂, same data except 6.II.1960 ( CNCI) . 1 ♂ from BRAZIL, Rio Grande do Sul, Morro Redondo , 101 m, 12.III.2003 , Malaise trap, RFKrüger; 1 ♂, same data except 9.IV.2003 ( UFES). Distribution. Recorded from two localities in southern Brazil ( Fig. 314 View FIGURES 313–320 ) .