Messatoporus basiflavus 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 : 78-80

Messatoporus basiflavus Santos , sp. nov.

( Fig. 101 )

Female. Fore wing 7.87 mm. HEAD: Mandible densely covered with long hairs; MLW 2.26; MWW 0.57; dorsal tooth in front view projected upwards, enlarged and wide, ventral tooth indistinct. MSM 0.31. Clypeus basally convex, apically abruptly flattened, centrally concave; CHW 2.45; CWW 2.35; apical area medially straight, laterally with distinct triangular lobes, its margin regular, not raised. Antenna with 23 flagellomeres; flagellum 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, with slight median line. Occipital carina uniformly curved (doubt), 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 wrinkles at ventral half of posterior margin; epomia weak, complete, moderately long, ending near dorsal margin of pronotum, after diverging from pronotal collar distinctly curved. Mesoscutum moderately convex, flattened posteriorly, subcircular, 1.13 × 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 moderately deep, 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, smooth; scrobe very shallow; mesopleural suture ventrally with strong longitudinal wrinkles, wrinkles dorsally weak. Mesosternum medially with short transverse wrinkles; median portion of posterior transverse carina of the mesothoracic venter short, straight. Transverse sulcus at base of propodeum moderately wide, about 0.55 × as long as anterior area of propodeum, impunctate; metapleuron moderately punctate, without transverse wrinkles, dorsally moderately pilose, ventrally densely pilose; juxtacoxal carina represented by very short ridges. 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: 1.07 × as long as wide, shiny, sparsely pilose; anterior area scarcely punctate; spiracle elongate, SWL 3.78; anterior transverse carina medially slightly arched forwards. Propodeal wrinkles anteriorly faint, posteriorly moderately strong, closely spaced, mostly complete, 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 weakly curved; fore wing crossvein 1 cu-a basad of 1M+Rs by 0.47 of its own length; vein 2Cua 0.5 × as long as crossvein 2cu-a; bulla of crossvein 2m-cu placed on midlength; cell 1+2Rs small, APH 0.57, pentagonal, about as high as wide, AWH 0.95; crossvein 3r-m fully spectral, 2r-m and 3r-m subparallel, about same length; vein 3-M about as long as 2-M; 4-Rs distinctly sinuous; 4-M tubular, irregular. Hind wing vein 1-M forming distinctly obtuse angle with vein Cua; vein 2-Rs tubular, apically spectral, reaching wing margin; HW1C 1.6; vein Cub distinctly convex on posterior half, forming distinctly obtuse angle with vein Cua (basally curved); vein 2-1A reaching 0.73 of distance to posterior wing margin.

METASOMA: First tergite short, about 0.32 × as long as T2–8, somewhat depressed, ventrolaterally angled, dorsally glabrate, laterally moderately pilose; T1LW 3.32; T1WW 1.64; 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 1.24; T2WW 2.87; thyridium much longer than wide, without small circular depression just behind it; T2–8 smooth between punctures, laterally moderately pilose, dorsally T2 glabrate, T3–8 sparsely to moderately pilose. OST 1; ovipositor moderately stout, straight, basally cylindric, apically distinctly depressed; dorsal valve with four moderately strong ridges; ventral valve apex with 9 teeth, apical teeth progressively more closely spaced; surface anterior to first tooth rugulose.

Color. Head, mesosoma and metasoma black with yellow marks. Head: black; clypeus, mandible except apex, mouthparts, malar space, supra-clypeal area and complete orbital band, light yellow (231,211,095); f5–10 entirely white, f4 and f11 partially yellow. 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 0.4 of metapleuron and arc-shaped mark on propodeum, light yellow; fore leg light yellow, except basal mark at coxa, dorsal mark on basal 0.2 of femur and t5, blackish; dorsal face of femur pale orange; mid leg light orange (221,166,064) except t5, blackish; hind leg bright orange (200,086,049), except posterior mark at coxa and basal 0.75 of tibia, bright yellow; apical 0.25 of tibia gradually turning to blackish, 0.6 of hind t1 black; remainder of t1 and T2–3 white. Metasoma: black; T1 laterally entirely bright yellow, dorsally yellow at anterior 0.4 and posterior 0.2; S1 yellowish; T2–7 and S2–7 with posterior light yellow stripes.

Male. Unknown.

Comments. Messatoporus basiflavus is part of a group of five very close species; ( Fig. 101–105 ; see Comments under M. mesosternalis ). Among these species, it is more similar to M. occidentalis sp. nov., from which it can be differentiated by having T1 laterally entirely yellow, dorsally yellow on basal 0.4 and posterior 0.2 (vs. black at anterior 0.8, whitish or yellowish on apical 0.2); S1 yellowish (vs. black); mid coxa mostly orange (vs. mostly whitish); and ovipositor ventral valve with nine teeth (vs. five).

Messatoporus basiflavus can be isolated from the other close species M. mesosternalis , M. semiaurantigaster sp. nov. and M. orientalis 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 or entirely 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 words basis, meaning “base” and flavus, meaning “yellow”; in reference to the first metasomal tergite anteriorly yellow, as opposed to other very close species (see Comments).

Material examined. Holotype ♀ from PANAMA, Tuipo , VII.1922, JPChapin ( USNM). Pinned. Extreme tip of right antenna, right fore leg apicad to coxa, both hind t4–5 and ovipositor sheaths missing; right fore wing detached and re-glued to the specimen; otherwise in good shape.

Distribution. Recorded only from the type locality, in Panama. The locality name on the label, “Tuipo”, is unknown.

Figures

FIGURES 101–105. Lateral view. 101, M. basiflavus*. 102, M. occidentalis*. 103, M. mesosternalis. 104, M. orientalis. 105, M. semiaurantigaster.

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.