Messatoporus pallidus 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 : 167-168

Messatoporus pallidus Santos , sp. nov.

( Figs 42 , 155 , 172 , 353 )

Female. Fore wing 5.88 mm. HEAD: Mandible with moderately sparse and long hairs; MLW 1.92; MWW 0.46; dorsal tooth in front view projected upwards, much longer than ventral tooth; ventral tooth triangular. MSM 0.15. Clypeus basally evenly convex, apically gradually flattened, centrally concave; CHW 1.95; CWW 2.15; apical area medially concave, laterally with distinct triangular lobes, its margin very sharp, raised. Antenna with 22 flagellomeres; flagellum uniform; apex of apical flagellomere much narrower than base, distinctly tapered. Supraantennal area shiny, scarcely punctate, not striate near antennal sockets, ventrally distinctly concave, with very weak, low median line. Occipital carina uniformly curved, 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 ).

THORAX: Pronotum glabrate, shiny, impunctate, with weak and short wrinkles at ventral half of posterior margin; epomia very weak, complete, short, ending far from dorsal margin of pronotum, after diverging from pronotal collar approximately straight. Mesoscutum strongly and uniformly convex, subcircular, 1.09 × as long as wide, densely covered with short hairs, shiny, asperous; notaulus reaching about 0.73 of mesoscutum length, moderately impressed, surface over notaulus with weak and short transverse wrinkles; scuto-scutellar groove shallow, with distinct longitudinal wrinkles. Subalar ridge weakly projected; epicnemial carina reaching about 0.6 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 indistinct. Transverse sulcus at base of propodeum very wide, about 0.7 × as long as anterior area of propodeum, impunctate; metapleuron sparsely and finely punctate, without transverse wrinkles, dorsally glabrate, ventrally sparsely pilose; juxtacoxal carina represented by very short ridges. Fore tibia distinctly swollen. Mesal lobe of t4 with 3–4 bristles. Hind coxa with external face changing from basally foveolate-areolate to apically coriarious, internal face with sparse and fine punctures.

PROPODEUM: 1.2 × as long as wide, shiny, sparsely pilose; anterior area scarcely punctate; spiracle elliptic, SWL 2.14; anterior transverse carina medially slightly arched forwards. Propodeal wrinkles anteriorly and laterally faint, posteriorly moderately strong, closely spaced, each wrinkle incomplete, irregular but 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, totally continuous with 1-Rs+M (doubt); vein 1M+Rs anteriorly straight, posteriorly weakly curved; fore wing crossvein 1 cu-a basad of 1M+Rs by 0.32 of its own length; vein 2Cua 0.49 × as long as crossvein 2cu-a; bulla of crossvein 2m-cu placed on midlength; cell 1+2Rs of moderate size, APH 0.83, pentagonal, about as high as wide, AWH 1.11; 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 very weakly sinuous; 4-M semi-spectral. Hind wing vein 1-M forming distinctly obtuse angle with vein Cua; vein 2-Rs tubular, apically spectral, reaching wing margin; HW1C 0.96; vein Cub straight, forming straight angle with Cua; vein 2-1A reaching 0.97 of distance to posterior wing margin.

METASOMA: First tergite moderately long, about 0.37 × as long as T2–8, strongly depressed, ventrolaterally angled, dorsally glabrate, laterally moderately pilose; T1LW 3.57; T1WW 1.91; spiracle on 0.48 of its length, distinctly prominent; median depression absent; median posterior depression elongate; lateral depressions absent; ventrolateral carina absent. T2LW 1.22; T2WW 2; thyridium longer than wide, without small circular depression just behind it; T2–8 minutely coriarious, densely and uniformly pilose. OST 1.21; ovipositor moderately stout, straight, basally cylindric, apically slightly depressed; dorsal valve with four moderately strong ridges; ventral valve apex with 11 teeth, apical teeth progressively more closely spaced; surface anterior to first tooth rugulose.

Color. Head black, mesosoma mostly pale orange and whitish, metasoma pale orange. Head: black; f8–13 entirely white, 7 and 14 partially white; scape and pedicel ventrally light brown; clypeus, palpi, supra-clypeal area and complete orbital band, whitish (227,212,152). Mesosoma: pale orange (206,122,053); pronotum, subalar ridge, most of mesopleuron, subcircular spot on mesoscutum, most of scutellum, dorsal division of metapleuron, transverse sulcus at base of propodeum, most of mesosternum, whitish; suture between pronotum and mesoscutum, scutellum posteriorly, and postscutellum, blackish; lateral lobes of mesoscutum dark brown; fore and mid legs gradually lighter towards apex; hind tibia apical 0.1 blackish; hind tarsus white, except basal 0.5 of t1, t4 and t5, blackish. Metasoma: pale orange.

Male. Unknown.

Comments. Messatoporus pallidus is not particularly similar to any other species of Messatoporus ; it shows superficial similarities with some species, such as the color pattern resembling M. longitergus sp. nov.. It can be readily differentiated from that species, however, by the ovipositor much longer, OST 1.21 (vs. 0.65), moderately stout (vs. slender), dorsal valve with four moderately strong ridges (vs. with three very weak ridges); first tergite much stouter, T1LW 3.57 (vs. 5.65); hind wing vein Cua about as long as 1cu-a, HW1C 0.96 (vs. much longer than 1cu-a, HW1C 1.55); and mesoscutum subcircular, 1.09 × as long as wide (vs. ovoid, 1.32 × as long as wide). It is also similar to M. fulvator , which can be isolated from M. pallidus by the T1–2 with posterior whitish stripes, T1 also dorsally whitish on basal 0.2 (vs. T1–2 entirely pale orange); median depression on T1 absent (vs. elongate, distinct); hind wing vein Cub straight (vs. distinctly convex on posterior half, otherwise straight); spiracle of propodeum elliptic, SWL 2.14 (vs. elongate, SWL 5.33); and ovipositor ventral valve with eleven apical teeth (vs. six).

Biology. Unknown.

Etymology. From the Latin pallidus , meaning “pale”; in reference to its mostly pale yellow and brown colors.

Material examined. Holotype ♀ from BOLIVIA, Cochabamba, Vila Tunari , 7.V.2001, Malaise trap, HHeider ( CNCI). Mounted on triangle point. Tip of right antenna and right mid leg apicad to coxa missing; otherwise in good shape.

Distribution. Recorded only from the type locality, in central Bolivia ( Fig. 353 ).

Figures

FIGURES 41–45. Lateral view. 41, M. citreocephalus*. 42, M. pallidus*. 43, M. laevilatus. 44, M. paraguayensis. 45, M. lissonotus.

FIGURES 153–161. Mesoscutum, dorsal view. 153, M. lissonotus. 154, M. copiosus*. 155, M. pallidus*. 156, M. semialbiventris*. 157, M. nigriangulatus*. 158, M. orientalis*. 159, M. opacus*. 160, M. bimaculatus*. 161, M. jalapa.

FIGURES 171–179. Propodeum, dorsal view. 171, M. paraguayensis. 172, M. pallidus*. 173, M. fulvator. 174, M. nigriscutus*. 175, M. tenuirobis*. 176, M. elektor*. 177, M. versicolor*. 178, M. maculiscus. 179, M. opacus*.

FIGURES 353–360. Distribution maps for species of Messatoporus. 353, M. pallidus. 354, M. paradoxus. 355, M. paraguayensis. 356, M. paralissonotus. 357, M. pleuriflavus. 358, M. propodeator. 359, M. rufator. 360, M. semialbiventris.

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.