Messatoporus semialbiventris 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 : 177-178

Messatoporus semialbiventris Santos , sp. nov.

( Figs 93 , 117 , 146 , 156 , 182 , 360 )

Female. Fore wing 7.5 mm. HEAD: Mandible densely covered with long hairs; MLW 2.16; MWW 0.31; dorsal tooth in front view projected upwards, much longer than ventral tooth; ventral tooth triangular. MSM 0.24. Clypeus basally evenly convex, apically gradually flattened, centrally straight; CHW 2.48; CWW 1.91; apical area medially straight, laterally with distinct triangular lobes, its margin very sharp, raised. Antenna with 27 flagellomeres; flagellum uniform; apex of apical flagellomere much narrower than base, distinctly tapered. Supra-antennal area mat, with moderately dense punctation, distinctly striate near antennal sockets, ventrally and around ocelli distinctly concave, medially with a distinct depression but without a distinct 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 centrally glabrate, moderately pilose at dorsal margin, shiny, mostly impunctate, scarcely punctate at dorsal corner and collar (and collar), with strong wrinkles at ventral half of posterior margin; epomia moderately strong, complete, short, ending far from dorsal margin of pronotum, after diverging from pronotal collar distinctly curved. Mesoscutum moderately and uniformly convex, ovoid, 1.3 × as long as wide, anteriorly densely pilose, posteriorly sparsely pilose, shiny, anteriorly asperous, posteriorly almost impunctate; notaulus reaching about 0.76 of mesoscutum length, moderately impressed, surface over notaulus with weak and short transverse wrinkles; scuto-scutellar groove deep, with vestigial longitudinal wrinkles. Subalar ridge weakly projected; epicnemial carina complete, reaching subalar ridge, more or less uniformly curved; sternaulus complete and strong, wider on posterior apex, strongly sinuous, with weak vertical wrinkles; scrobe moderately deep; mesopleural suture with strong longitudinal wrinkles along entire length. Mesosternum medially with short transverse wrinkles; median portion of posterior transverse carina of the mesothoracic venter short, distinctly arched forwards. Transverse sulcus at base of propodeum very wide, about 1.03 × as long as anterior area of propodeum, laterally with weak longitudinal wrinkles, medially not wrinkled; metapleuron punctate-rugulose, without transverse wrinkles, dorsally moderately pilose, ventrally densely pilose; juxtacoxal carina represented by very short ridges. Fore tibia weakly swollen. Mesal lobe of t4 with 3–4 bristles. Hind coxa with moderately strong punctures separated by about their own diameter, dorsally foveolate.

PROPODEUM: 1.28 × as long as wide, shiny, densely pilose; anterior area scarcely punctate; spiracle elongate, SWL 4.00; anterior transverse carina medially straight. Propodeal wrinkles anteriorly very close and moderately strong, posteriorly stronger and more widely spaced, central wrinkles complete, anterior and posterior ones incomplete and overlapped, 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 irregular, limit between 1m-cu and 1-Rs+M clearly traceable; vein 1M+Rs anteriorly straight, posteriorly curved; fore wing crossvein 1 cu-a basad of 1M+Rs by 0.47 of its own length; vein 2Cua 0.24 × as long as crossvein 2cu-a; bulla of crossvein 2m-cu placed mostly on posterior half; cell 1+2Rs small, APH 0.41, pentagonal, about as high as wide, AWH 1.07; crossvein 3r-m fully spectral, 2r-m and 3r-m parallel, about same length; vein 3-M about as long as 2-M; 4-Rs distinctly sinuous; 4-M tubular, slightly curved backwards. Hind wing vein 1-M forming straight angle with vein Cua; vein 2-Rs tubular, apically spectral, reaching wing margin; HW1C 0.8; vein Cub distinctly convex on posterior half, forming distinctly obtuse angle with vein Cua (basally curved); vein 2-1A reaching 0.84 of distance to posterior wing margin.

METASOMA: First tergite short, about 0.45 × as long as T2–8, strongly depressed, ventrolaterally angled, dorsally glabrate, laterally moderately pilose; T1LW 5.06; T1WW 1.43; spiracle on 0.48 of its length, distinctly prominent; median depression absent; lateral and median posterior depressions absent; ventrolateral carina absent. T2LW 2.02; T2WW 1.61; thyridium much longer than wide, without small circular depression just behind it; T2–8 covered with small, shallow foveae, densely and uniformly pilose. OST 0.69; ovipositor moderately stout, straight, basally cylindric, apically slightly depressed; dorsal valve without ridges; ventral valve apex with 9 teeth, apical teeth progressively more closely spaced; surface anterior to first tooth not rugulose.

Color. Head, mesosoma and metasoma black, with whitish marks. Head: clypeus, mandible except apex, mouthparts, orbital band at supra-antennal area and gena, scape and pedicel ventrally, whitish (235,216,145); supra-clypeal area whitish with sparse black marks; scape and pedicel dorsally dark brown; flagellum black; f10–15 entirely white, f9 and f16 partially white. Mesosoma: black; collar, small subcircular spot on mesoscutum, tegula, subalar ridge, basal 0.8 of scutellum, dorsal division of metapleuron, posterior 0.2 of metapleuron and lateral marks at propodeal apex, whitish; fore leg whitish with sparse blackish marks at coxa, wide brown stripe at dorsal face of femur, tibia and tarsus, t5 fuscous; mid and hind coxae with posterior whitish spot; mid trochanters marked with whitish and black; mid and hind femora black, mid tibia except ventral face, apical 0.6 of t2 and t3-4 whitish; ventral face of mid tibia, t1, basal 0.4 of t2 and t5, blackish; basal 0.3 of hind tibia, apical 0.3 of hind t1 and t2–5, white; apical 0.7 of hind tibia and basal 0.7 of hind t1, blackish. Metasoma: black; T1 with dorsal triangular mark at anterior 0.5; T1–4 with posterior whitish stripe; S1–6 whitish.

Male. Fore wing 6.75–8.67 mm long. Similar to female, except for the following: black marks at supra-clypeal area absent; antenna with 28–29 flagellomeres; pronotum entirely black; subalar ridge with very small whitish mark; scutellum whitish only laterally; white mark at dorsal division of metapleuron restricted to anterior portion; whitish marks on metapleuron and propodeum very small; mid coxa sparsely marked with black and whitish; whitish mark at hind coxa small; posterior whitish stripes on T1–4 almost indistinct.

Variation. Paratype female scutellum with central blackish mark; fore coxa with extensive dark brown marks, mid coxa almost entirely dark brown; whitish stripe on T2–3 very weak.

Comments. Similar to M. paeneater sp. nov., from which it can be differentiated by having clypeus and supraclypeal area pale yellow (vs. mostly blackish); collar and dorsal margin of pronotum with narrow yellowish marks (vs. pronotum entirely black); fore and mid coxae with extensive yellow marks (vs. entirely dark brown or black); dorsal division of metapleuron partially yellow (vs. entirely black); T2–3 with distinct, subcircular posterior pale yellow stripes (vs. posterior stripes almost indistinct); epicnemial carina complete, more or less uniformly curved (vs. reaching about 0.7 of distance to subalar ridge, irregular); fore tibia weakly swollen (vs. not swollen); and propodeal wrinkles mostly slightly curved or somewhat sinuous (vs. distinctly curved backwards).

Biology. Unknown.

Etymology. From the Latin words semi, meaning “half”, albus, meaning “white” and venter, meaning “belly”; in reference to the yellow or whitish mark at the mesosternum of some males.

Material examined. 2 ♀, 8 ♂♂. Holotype ♀ from BRAZIL, Espírito Santo, Cariacica, Reserva Biológica de Duas Bocas , 31.VIII–1.IX.2002, RKawada ( UFES). Mounted on triangle point. Apical half of left antenna, right mid t2–5 and left hind tarsus missing; otherwise in good shape.

Paratypes: 1 ♂ from BRAZIL, Espírito Santo, Alfredo Chaves, Picadão , Mata, Pt. 5, 710 m, 8–15.X.2007, Malaise trap, COAzevedo et al. ( UFES) . 1 ♀ from BRAZIL, Rio de Janeiro, Itatiaia, 800 m, XII.1933, SLopes & ETRCunha ( MNRJ) . 1 ♂ from BRAZIL, Paraná, Colombo, Embrapa Br 476 km 20, 2.III.1987, Malaise trap, PROFAUPAR ; 1♂, same data except Guarapuava, Estação de Águas Santa Clara , 6.IV.1987 ; 2 ♂♂, same data except Jundiaí do Sul, Fazenda Monte Verde, 30.III.1987 ; 1 ♂, same data except Ponta Grossa (Vila Velha), Reserva IAPAR Br 376, 23.III.1987 ; 1 ♂, same data except São José dos Pinhais, Br 277 km 54, 20.IV.1987 ( DZUP) . 1 ♂ from BRAZIL, Rio Grande do Sul, Arroio Grande, 101 m, 29.XI.2002, Malaise trap, RFKrüger ( UFES) .

Distribution. Atlantic Forest in southern and southeastern Brazil ( Fig. 360 ).

Figures

FIGURES 91–95. Lateral view. 91, M. bicolor*. 92, M. paeneater*. 93, M. semialbiventris*. 94, M. andinus*. 95, M. matucanus*.

FIGURES 115–118. 115–116: M. townesi, lateral view. 115, Lectotype, head, mesosoma, metasoma and wings. 116, Paralectotype female, mesosoma and metasoma. 117–118: Male specimens, lateral view. 117, M. semialbiventris. 118, M. andinus.

FIGURES 139–152. Head, frontal view. 139, M. nigriscutus*. 140, M. transversostriatus. 141, M. maculiscus. 142, M. laevilatus. 143, M. elektor*. 144, M. versicolor*. 52. 145, M. opacus*. 146, M. semialbiventris*. 147, M. lunatus*. 148, M. bimaculatus*. 149, M. andinus*. 150, M. bennetti*. 151, M. teutonicus*. 152, M. paeneater*.

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 180–188. Propodeum, dorsal view. 180, M. concavivenus*. 181, M. teutonicus. 182, M. semialbiventris*. 183, M. orientalis*. 184, M. euryoikos. 185, M. transversostriatus. 186, M. titans*. 187, M. amplithorax. 188, M. lordos.

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.