Messatoporus longitergus 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 : 141-143

Messatoporus longitergus Santos , sp. nov.

( Figs 40 , 338 )

Female. Fore wing 6.48 mm. HEAD: Mandible densely covered with long hairs; MLW 2.44; MWW 0.39; dorsal tooth in front view projected upwards, much longer than ventral tooth; ventral tooth triangular. MSM 0.33. Clypeus basally convex, apically abruptly flattened, centrally concave; CHW 2.57; CWW 1.9; 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, with moderately dense punctation, distinctly striate near antennal sockets, ventrally and around ocelli distinctly concave, median line distingishable only as a rugulose area. Occipital carina uniformly curved. Temple and gena moderately wide, gena regular (as in Fig. 260 ).

THORAX: Pronotum centrally glabrate, moderately pilose at dorsal margin, shiny, densely punctate, weakly striate along posterior margin and collar; epomia absent. Mesoscutum moderately and uniformly convex, ovoid, 1.32 × as long as wide, densely covered with short hairs, shiny, densely punctulate; notaulus reaching about 0.74 of mesoscutum length, moderately impressed, surface over notaulus with weak and short transverse wrinkles; scutoscutellar groove deep, with vestigial longitudinal wrinkles. Subalar ridge moderately projected; epicnemial carina reaching about 0.85 of distance to subalar ridge, irregular; sternaulus moderately strong, wider on posterior apex, strongly sinuous, with weak vertical wrinkles; scrobe very shallow; mesopleural suture with weak longitudinal wrinkles along entire length. 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 very wide, about 0.88 × as long as anterior area of propodeum, anteriorly weakly colliculate, posteriorly with very weak longitudinal wrinkles; metapleuron minutely rugulose, without transverse wrinkles, dorsally sparsely pilose, ventrally moderately pilose; juxtacoxal carina represented by very short ridges. Fore tibia not distinctly swollen. Mesal lobe of t4 with 3–4 bristles. Hind coxa rugulose-coriarious.

PROPODEUM: 1.1 × as long as wide, shiny, moderately pilose; anterior area asperous and densely punctulate; spiracle elongate, SWL 4.25; anterior transverse carina medially slightly arched forwards. Propodeal wrinkles vestigial, most of posterior area rugulose; posterior transverse carina distinct, medially interrupted, forming weak sublateral crests.

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 uniformly curved; fore wing crossvein 1 cu-a basad of 1M+Rs by 0.35 of its own length; vein 2Cua 0.61 × as long as crossvein 2cu-a; bulla of crossvein 2m-cu placed on midlength; cell 1+2Rs small, APH 0.55, pentagonal, about as high as wide, AWH 0.94; 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 distinctly sinuous; 4-M semi-spectral, straight. Hind wing vein 1-M forming straight angle with vein Cua; vein 2-Rs tubular, apically spectral, reaching wing margin; HW1C 1.55; vein Cub distinctly convex on posterior half, forming distinctly obtuse angle with vein Cua (basally curved); vein 2-1A reaching 0.92 of distance to posterior wing margin.

METASOMA: First tergite moderately long, about 0.43 × as long as T2–8, somewhat depressed, ventrolaterally angled, dorsally sparsely pilose, laterally moderately pilose; T1LW 5.65; T1WW 1.42; spiracle on 0.48 of its length, distinctly prominent; median depression absent; lateral and median posterior depressions absent; ventrolateral carina weak, medially interrupted. T2LW 2.23; T2WW 2.09; thyridium longer than wide, without small circular depression just behind it; T2–8 densely, finely punctate, densely and uniformly pilose. OST 0.73; ovipositor slender, slightly sinuous, basally cylindric, apically slightly depressed; dorsal valve with three very weak ridges; ventral valve apex with 6 teeth, apical teeth progressively more closely spaced; surface anterior to first tooth not rugulose.

Color. Head black and pale yellow, mesosoma black, orange and pale yellow, metasoma orange. Head: black; clypeus, basal 0.3 of mandible, malar space, supra-clypeal area and complete orbital band, pale yellow (221,180,122); mouthparts light brown; scape and pedicel ventrally dark brown; f7–14 entirely white, f6 and f15 mostly white. Mesosoma: mostly orange (198,101,043); small dorsal mark on pronotum, mesoscutum, scutoscutellar groove and scutellum posteriorly, black; mesoscutum pronotum almost entirely, U-shaped mark at mesoscutum, scutellar carina, tegula, subalar ridge and central mark on mesopleuron, pale yellow; fore and mid t1–4 dark fulvous, t5 blackish; hind tibia basally orange, dorsally gradually turning to blackish on apical 0.75; basal 0.3 of t1 blackish; apical 0.7 of t1 and t2–5, whitish. Metasoma: orange; T3–7 with progressively smaller anterior dark brown marks; S4–5 with small lateral brown marks; T8 dark brown.

Male. Unknown.

Variation. Antenna sometimes with 26 flagellomeres; yellowish spot over mesoscutum either subcircular or bifurcated.

Comments. Similar to M. advenus sp. nov., from which it can be differentiated by having generally smaller size, with fore wing 6.48 mm long (vs. 10.75 mm long); pronotum almost entirely pale yellow (vs. almost entirely orange); supra-antennal area, occiput and mesoscutum dark brown (vs. mostly orange); scape ventrally dark brown (vs. orange); fore wing veins 2r-m and 3r-m, as well as 2-M and 3-M, about the same size (vs. 3r-m distinctly longer than 2r-m, and 2-M distinctly longer than 3-M); clypeus centrally concave (vs. straight).

Biology. Unknown.

Etymology. From the Latin words longus, meaning “long”, and tergus; in reference to its very long first metasomal tergite.

Material examined. 2 ♀. Holotype ♀ from RICA, Alajuela, Pena Blanca , 700 m, 7.VII.1987, E. Cruz ( AEIC). Pinned. Right mid tarsus missing; otherwise in good shape.

Paratype: 1 ♀, same data as holoype except II.1987 .

Distribution. Recorded only from the type locality, in Costa Rica ( Fig. 338 ).

Figures

FIGURES 36–40. Lateral view. 36, M. apertus. 37, M. aurantius*. 38, M. longicaudis*. 39, M. amarelus. 40, M. longitergus*.

FIGURES 337–344. Distribution maps for species of Messatoporus. 337, M. longicaudis. 338, M. longitergus. 339, M. lordos. 340, M. lunatus. 341, M. maculipes. 342, M. maculistis. 343, M. matucanus. 344, M. mesonotator.

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.