Messatoporus atrifoveus 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 : 74-75

Messatoporus atrifoveus Santos , sp. nov.

( Figs 111 , 202 , 303 )

Female. Fore wing 6.0 mm. HEAD: Mandible densely covered with long hairs; MLW 2.09; MWW 0.31; dorsal tooth in front view projected upwards, much longer than ventral tooth; ventral tooth triangular. MSM 0.28. Clypeus basally evenly convex, apically gradually flattened, centrally straight; CHW 2.5; CWW 1.56; apical area medially concave, laterally with distinct triangular lobes, its margin regular, not raised. Antenna with 30 flagellomeres; flagellum uniform; apex of apical flagellomere much narrower than base, distinctly tapered. Supra-antennal area mat, scarcely punctate, distinctly striate near antennal sockets, ventrally distinctly concave, with very weak, low median 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 glabrous, shiny, impunctate, ventrally moderately striate; epomia weak, distinct only after diverging from pronotal collar, short, ending far from dorsal margin of pronotum, after diverging from pronotal collar approximately straight. Mesoscutum strongly and uniformly convex, subcircular, 1.11 × as long as wide, anteriorly densely pilose, posteriorly sparsely pilose, shiny, scarcely punctate; notaulus reaching about 0.8 of mesoscutum length, moderately impressed, surface over notaulus with weak and short transverse wrinkles; scutoscutellar groove moderately deep, with distinct longitudinal 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 weak vertical wrinkles; scrobe very shallow; 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, arched backwards. Transverse sulcus at base of propodeum very wide, about 1.16 × as long as anterior area of propodeum, posteriorly with longitudinal wrinkles; metapleuron punctate-rugulose, without transverse wrinkles, dorsally sparsely pilose, ventrally moderately pilose; juxtacoxal carina represented by very short ridges. Fore tibia weakly swollen. Mesal lobe of t4 with 3–4 bristles. Hind coxa laterally foveolate-areolate, dorsally rugulose.

PROPODEUM: 1.28 × as long as wide, shiny, sparsely pilose; anterior area moderately punctate; spiracle elongate, SWL 3.8; anterior transverse carina medially straight. Propodeal wrinkles moderately strong, very closely spaced, anteriorly complete, posteriorly mostly incomplete and overlapped, approximately straight; 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 0.29 of its own length; vein 2Cua 0.37 × as long as crossvein 2cu-a; bulla of crossvein 2m-cu placed on midlength; cell 1+2Rs small, APH 0.61, 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 longer than 2-M; 4-Rs irregular, apically not upcurved; 4-M semi-spectral, irregular. Hind wing vein 1-M forming distinctly obtuse angle with vein Cua; vein 2-Rs tubular, apically spectral, reaching wing margin; HW1C 0.81; vein Cub almost straight, very slightly convex, forming distinctly obtuse angle with vein Cua (basally curved); vein 2-1A reaching 0.8 of distance to posterior wing margin.

METASOMA: First tergite very long, about 0.47 × as long as T2–8, strongly depressed, ventrolaterally angled, dorsally glabrate, laterally densely pilose; T1LW 4.59; T1WW 1.63; spiracle on 0.51 of its length, distinctly prominent; median depression absent; lateral and median posterior depressions absent; ventrolateral carina absent, but traceable as limit between lateral and ventral portions. T2LW 1.64; T2WW 2.16; thyridium longer than wide, without small circular depression just behind it; T2–8 covered with small, shallow foveae, densely and uniformly pilose. OST 0.66; ovipositor slender, straight, basally cylindric, apically distinctly depressed; dorsal valve without ridges; ventral valve apex with 8 teeth, 1st and 2nd widely spaced; surface anterior to first tooth rugulose.

Color. Head and mesosoma black and pale yellow, metasoma dark brown and pale yellow. Head: black; clypeus, mandible except apex, mouthparts, malar space, supra-clypeal area, scape and pedicel ventrally and complete orbital band, pale yellow (221,194,124); scape and pedicel dorsally and flagellum dark brown, blackish towards apex; f10–15 entirely white, f9 and f16 partially white. Mesosoma: mostly pale yellow; mesoscutum black with subcircular spot and small lateral longitudinal dashes, pale yellow; small marks at posterior pronotum, anterior margin of mesopleuron, and scrobe, axillary through of mesonotum, anterior portion of axillary through of metanotum, posterior 0.2 of scutellum, axillary carinae medially, postscutellum, ventral 0.5 of epicnemium except mark anterior to sternaulus, surface over sternaulus, transverse sulcus, and ventral margin of metapleuron anteriorly, black; anterior area of propodeum black with lateral sub-triangular pale yellow spots; posterior area anteriorly black, posteriorly with arched, somewhat triangular pale yellow mark; fore and mid legs pale yellow except brown stripe on basal 0.8 of dorsal femora and ventral tibiae, both t5 dark fuscous, dark brown ventral mark at mid first trochanter and mid tarsus blackish; hind coxa pale yellow with large longitudinal black stripe, basally expanded to a ring; hind first trochanter blackish; second trochanter yellowish with brown marks; hind femur brownish orange (177,107,047), with small marks basally orange, apically blackish; basal 0.25 of tibia, apical 0.75 of t1, t2–4 and basal 0.8 of t5, whitish; apical 0.75 of tibia, basal 0.25 of t1 and apical 0.2 of t5, blackish. Metasoma: dark brown (071,055,042); T1 black with anterior 0.4 dorsally and posterior 0.2 pale yellow; T2 blackish except thyridium orangish and posterior pale yellow stripe; T3–7 with posterior pale yellow stripe; S1–6 pale yellow, S2–5 with lateral brownish marks.

Male. Fore wing 6.75 mm long. Antenna with 27 flagellomeres. Very similar to female, except for anterior area of propodeum without yellow spots.

Variation. Fore wing 6.42–7.71 mm long. Paratype specimen with f9 entirely dark brown; mesoscutum without lateral dash; most black marks at mesosoma turning to dark brown; anterior area of propodeum without lateral marks; second hind trochanter with large dark brown spot.

Comments. Similar to M. campanulatus sp. nov., from which it can be differentiated by having T1 very long, about 0.47 × as long as T2–8 (vs. short, about 0.29 × as long as T2–8); epicnemium mostly whitish (vs. almost entirely black); T5–6 with complete posterior yellowish stripe (vs. only with lateral yellowish marks); propodeal wrinkles approximately straight (vs. anteriorly and posteriorly slightly sinuous, median wrinkles medially strongly arched forwards, bell-shaped); and ovipositor dorsal valve without ridges (vs. with four moderately strong ridges). Also somewhat similar to M. complexifemur sp. nov., from which it can be isolated by the femur orange (vs. base and apex dark brown, median portion dorsally light brown, ventrally yellowish); T1 very long (vs. short, 0.33 × as long as T2–8); propodeal wrinkles approximately straight (vs. distinctly curved backwards); mesopleuron almost entirely yellowish, central mark connected to yellow subalar ridge (vs. distinctly separated from subalar ridge by black area); and ovipositor much shorter, OST 0.66, dorsal valve without ridges (vs. OST 1.02, dorsal valve with four moderately strong ridges).

Biology. Unknown.

Etymology. From the Latin words ater, meaning “black”, and fovea, meaning “pit”; in reference to the isolated black spot at scrobe.

Material examined. 2 ♀, 1 ♂. Holotype ♀ from BRAZIL, Espírito Santo, Cariacica, Reserva Biológica de Duas Bocas , Pau Amarelo, Pt. 20, 23–25.X.2005, yellow pans, APAguiar et al. ( UFES). Mounted on triangle point. Apical third of right antenna, apical two thirds of left antenna and right hind t5 missing; right hind leg broken and re-glued to the specimen; both hind rings largely folded, right hind wing partially ripped.

Paratypes: 1 ♂ from BRAZIL, Espírito Santo, Cariacica, Reserva Biológica de Duas Bocas , 16–17.IX.2006, Malaise trap, RKawada et al .; 1 ♀, same data except Pau Amarelo, Pt. 21, 25–27.X.2005, yellow pans, APAguiar et al. ( UFES) .

Distribution. Recorded only from two neighbouring areas in the same reserve, in southeastern Brazil ( Fig. 303 ).

Figures

FIGURES 111–114. Lateral view. 111, M. atrifoveus*. 112, M. versicolor*. 113, M. advenus*. 114, M. tibiator.

FIGURES 198–206. Propodeum, dorsal view. 198, M. maculipes. 199, M. caxiuanensis*. 200, M. amazonensis. 201, M. variegatus. 202, M. atrifoveus*. 203, M. dissidens*. 204, M. complexifemur. 205, M. copiosus. 206, M. ellipsicavus*.

FIGURES 297–304. Distribution maps for species of Messatoporus. 297, M. antennator 298, M. apertus. 299, M. apiopharkis. 300, M. arcuatus. 301, M. argentinus. 302, M. atlanticus. 303, M. atrifoveus. 304, M. aurantius.

FIGURES 260–271. 260–261, Gena, lateral. 260, M. longicaudis*. 261, M. compressicornis. 262–264, Antenna. 262, M. tibiator. 263, M. compresscornis. 264, M. antennator, male. 265–266, Hind t4. 265, M. paeneater*. 266, M. nigriscutus*. 267–271, Metasoma and ovipositor. 267, M. opacus*. 268, M. discoidalis. 269, M. longicaudis*. 270, M. convexus. 271, M. townesi.