Messatoporus dialeipsis 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 : 106-107

Messatoporus dialeipsis Santos , sp. nov.

( Figs 120 , 319 )

Female. Unknown.

Male. Fore wing 5.58 mm. HEAD: Mandible densely covered with long hairs; MLW 1.73; MWW 0.37; dorsal tooth in front view projected upwards, much longer than ventral tooth; ventral tooth triangular. MSM 0.2. Clypeus basally convex, apically abruptly flattened, centrally straight; CHW 1.96; CWW 2.5; apical area medially straight, laterally slightly projected, its margin regular, not raised. Antenna with 20 flagellomeres; flagellum strongly flattened and compressed on apical 0.3; apex of apical flagellomere about as wide as base, not distinctly tapered. Supra-antennal area shiny, impunctate, not striate near antennal sockets, ventrally distinctly concave, without median line. Occipital carina uniformly curved, 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, not distinctly wrinkled; epomia very weak, complete, short, ending far from dorsal margin of pronotum, after diverging from pronotal collar distinctly curved. Mesoscutum strongly and uniformly convex, subcircular, 1.09 × as long as wide, sparsely pilose, shiny, impunctate; notaulus reaching about 0.69 of mesoscutum length, weakly 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, irregular; sternaulus complete but weak, medially indistinct, strongly sinuous, smooth; scrobe moderately deep; mesopleural suture without wrinkles. 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 1.00 × as long as anterior area of propodeum, impunctate; metapleuron moderately punctate, without transverse wrinkles, sparsely pilose; juxtacoxal carina absent. Hind coxa punctate-coriarious.

PROPODEUM: 1.18 × as long as wide, shiny, sparsely pilose; anterior area almost impunctate; spiracle elliptic, SWL 3.17; anterior transverse carina medially slightly arched backwards. Propodeal wrinkles moderately strong, very closely spaced, mostly complete, often ramificated, distinctly curved backwards; 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 0.25 of its own length; vein 2Cua 0.29 × as long as crossvein 2cu-a; bulla of crossvein 2m-cu placed mostly on posterior half; cell 1+2Rs small, APH 0.38, pentagonal, about as high as wide, AWH 0.96; crossvein 3r-m absent; vein 3-M about as long as 2-M; 4-Rs very weakly sinuous; 4-M tubular, irregular. Hind wing vein 1-M forming straight angle with vein Cua; vein 2-Rs tubular, apically spectral, reaching wing margin; HW1C 0.98; vein Cub almost straight, very slightly convex, forming distinctly obtuse angle with vein Cua (basally curved); vein 2-1A reaching 0.88 of distance to posterior wing margin.

METASOMA: First tergite moderately long, about 0.36 × as long as T2–8, somewhat depressed, ventrolaterally angled, dorsally glabrate, laterally moderately pilose; T1LW 5.35; T1WW 1.12; spiracle on 0.52 of its length, 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 2.73; T2WW 1.59; thyridium longer than wide, without small circular depression just behind it; T2–8 covered with small, shallow foveae, densely and uniformly pilose.

Color. Head black and whitish, mesosoma black, whitish and orange, metasoma mostly dark brown and orange. Head: black; clypeus, mandible except apex, mouthparts, malar space, supra-clypeal area, scape and pedicel ventrally and complete orbital band (though very narrower at dorsal margin of eye), pale yellow (222,206,124); f10–15 entirely whitish, f9 and f16 partially whitish. Mesosoma: mostly bright orange (207,111,042); pronotum except black mark at dorsal corner, propleuron, subcircular spot on mesoscutum, scutellar carina partially basal 0.8 of scutellum, axillar carinae, axillary through of metanotum, tegula, hypoepimeron, dorsal division of metapleuron and posterior 0.2 of propodeum, pale yellow; posterior mark on pronotum, mesoscutum, scuto-scutellar groove, axillary through of mesonotum, dorsal 0.25 of epicnemium and mesopleuron, anterior area and anterior 0.3 of posterior area of propodeum, black; fore leg whitish, darker towards apex, second trochanter and femur dorsally orange, t3–4 with dark brown marks, t5 dark brown; mid leg bright orange, lighter apically except tarsus blackish; hind coxa, trochanters and femur bright orange, sparse marks at trochanters and apical dorsal spot at femur, blackish; basal 0.8 of hind tibia, yellowish; apical 0.2 of hind tibia and basal 0.5 of t1, blackish; remainder of tarsus whitish. Metasoma: mostly bright orange; T1 whitish, with median 0.4 dark brown, brown area laterally extending until its base; T2–3 anterior 0.6 dark brown, T2 posteriorly gradually turning to whitish; T4–7 anterior 0.25 brown (112,063,029).

Variation. Fore wing 5.58–6.29 mm long. Antenna with 20–21 flagellomeres; hind femur sometimes without apical blackish mark. Specimen from Magdalena with orbital band wide even at dorsal corner of eye, ventral portion of mesopleuron and mesoscutum mostly whitish, dorsal whitish mark on T1 reaching anterior 0.5; specimen from Coaraci with orbital band widely interrupted at gena.

Comments. More similar to the males of M. convexus sp. nov., from which it can be differentiated by the orbital band complete, though very narrow at dorsal margin of eye (vs. widely interrupted at gena); dorsal 0.2 of epicnemium and mesopleuron black (vs. mesopleuron and epicnemium entirely orange); anterior area of propodeum and anterior 0.4 of posterior area blackish (vs. propodeum entirely orange) and T1 laterally black at anterior 0.8 (vs. laterally almost entirely orange). By the description and illustrations provided in Kasparyan and Ruíz (2008), it seems also similar to M. rufator , from which it can be isolated mainly by the pronotum with blackish mark (vs. entirely yellowish); yellow spot on mesoscutum subcircular (vs. distinctly U-shaped); posterior area of propodeum anteriorly blackish (vs. entirely yellowish); T1 laterally black at anterior 0.8 (vs. laterally almost entirely yellowish); and hind coxa entirely orange (vs. with dorsal blackish mark on basal half).

Biology. Unknown.

Etymology. From the Greek dialeipsis , meaning “interval”; in reference to the medially indistinct sternaulus.

Material examined. 5 ♂♂. Holotype ♂ from BRAZIL, Espírito Santo, Cariacica, Reserva Biológica de Duas Bocas , 16–17.IX.2006, Malaise trap, RKawada ( UFES). Mounted on triangle point. In good shape.

Paratypes: 1 ♂ from COLOMBIA, Magdalena, SFF Tayrona Pueblito, 225 m, 19–30.IX.2000, Malaise trap, Rhenriquez ( AEIC) . 1 ♂ from BRAZIL, Bahia, Coaraci , Fazenda Restauração, Pt. 8, 23.VIII.2002, Malaise trap, JCardoso & JMaia ; 1 ♂, same data except Fazenda São José, pt. 3, 26.XI.2002 ; 1 ♂, same data except Itororó , Fazenda Santa Cruz, 24.XI.2002 ( UFES) .

Distribution. Recorded from northern Colombia and from Central Atlantic Forest, in Espírito Santo and Bahia, Brazil ( Fig. 319 ).

Figures

FIGURES 119–123. Male specimens, lateral view. 119, M. igneus. 120, M. dialeipsis. 121, M. concavivenus*. 122, M. subalaris*. 123, M. antennator.

FIGURES 313–320. Distribution maps for species of Messatoporus. 313, M. compressicornis. 314, M. concavivenus. 315, M. convexus. 316, M. copiosus. 317, M. covarrubiasi. 318, M. depressifrons. 319, M. dialeipsis. 320, M. discoidalis.

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.