Messatoporus advenus 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 : 50-51

Messatoporus advenus Santos , sp. nov.

( Figs 113 , 162 , 289 )

Female. Fore wing 10.75 mm. HEAD: Mandible densely covered with long hairs; MLW 2.19; MWW 0.39; dorsal tooth in front view projected upwards, much longer than ventral tooth; ventral tooth triangular. MSM 0.23. Clypeus basally convex, apically abruptly flattened, centrally straight; CHW 2.39; CWW 1.91; apical area medially straight, laterally slightly projected, its margin regular, not raised. Antenna with 28 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 slightly concave, median line distinguishable only as a rugulose area. Occipital carina uniformly curved, fading out on a distance shorter than basal width of mandible from the hypostomal carina. Temple and gena narrow, gena regular (as in Fig. 260 ).

THORAX: Pronotum moderately pilose, shiny, punctate-rugulose, with moderate striation along posterior margin and collar; epomia almost indistinct, distinct only after diverging from pronotal collar, short, ending far from dorsal margin of pronotum, after diverging from pronotal collar distinctly curved. Mesoscutum moderately and uniformly convex, ovoid, 1.32 × as long as wide, densely covered with short hairs, mat, densely punctulate; notaulus reaching about 0.74 of mesoscutum length, moderately impressed, surface over notaulus with weak and short transverse wrinkles; scuto-scutellar groove moderately deep, with distinct longitudinal wrinkles. Subalar ridge strongly projected; epicnemial carina reaching about 0.7 of distance to subalar ridge, more or less uniformly curved; 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, slightly arched forwards. Transverse sulcus on base of propodeum very wide, about 0.83 × as long as anterior area of propodeum, strongly rugulose; metapleuron punctate-rugulose, without transverse wrinkles, densely covered with very short hairs; juxtacoxal carina represented by very short ridges. Fore tibia not distinctly swollen. Mesal lobe of t4 with a distinct cluster of stout bristles. Hind coxa basally foveolate-areolate, apically punctate, interior face minutely rugulose.

PROPODEUM: 1.07 × as long as wide, mat, densely pilose; anterior area punctate-foveolate; spiracle elongate, SWL 6.67; anterior transverse carina medially slightly arched forwards. Propodeal wrinkles vestigial, most of posterior area areolate-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 0.4; crossvein 1m-cu more or less uniformly curved, limit between 1m-cu and 1-Rs+M clearly traceable; vein 1M+Rs anteriorly straight, posteriorly weakly curved; fore wing crossvein 1 cu-a basad of 1M+Rs by 0.44 of its own length; vein 2Cua 0.65 × as long as crossvein 2cu-a; bulla of crossvein 2m-cu placed on midlength; cell 1+2Rs small, APH 0.79, pentagonal, about as high as wide, AWH 1.03; crossvein 3r-m fully spectral, 2r-m and 3r-m distinctly convergent, 3r-m distinctly longer; vein 3-M distinctly shorter than 2-M; 4-Rs very weakly sinuous; 4-M spectral, straight. Hind wing vein 1-M forming straight angle with vein Cua; vein 2-Rs tubular, apically spectral, reaching wing margin; HW1C 1.4; vein Cub distinctly convex on posterior half, forming straight angle with Cua; vein 2-1A reaching 0.96 of distance to posterior wing margin.

METASOMA: First tergite moderately long, about 0.42 × as long as T2–8, approximately cylindrical, ventrolaterally angled, uniformly, densely pilose; T1LW 4.98; T1WW 1.55; spiracle on 0.49 of its length, slightly prominent; median depression absent; lateral and median posterior depressions absent; ventrolateral carina weak. T2LW 1.6; T2WW 2.73; thyridium longer than wide, without small circular depression just behind it; T2–8 densely punctate and minutely and weakly coriarious, densely and uniformly pilose. OST 0.76; ovipositor slender, slightly sinuous, basally cylindric, apically distinctly depressed; dorsal valve without ridges; ventral valve apex with 6 teeth, apical teeth progressively more closely spaced; surface anterior to first tooth not rugulose.

Color. Head bright orange and bright yellow, mesosoma bright orange, pale yellow and dark brown, metasoma bright orange. Head: bright orange (186,072,024); clypeus, malar space, supra-clypeal area and complete orbital band, bright yellow (246,230,113); scape light brown; apical 0.5 of mandible, pedicel and flagellum blackish; f6–13 entirely white, f5 and f14 mostly white. Mesosoma: orange, dorsally brownish (152,063,037), ventrally bright; pronotal collar, scutellar carina, tegula, subalar ridge, central mark on mesopleuron, dorsal division of metapleuron and small posterior mark on metapleuron, pale yellow (226,192,082); propodeum sparsely marked with dark brown (062,039,022); legs apically lighter; apical 0.5 of hind t1 and t2–4 bright yellow. Metasoma: bright orange; anterior 0.4 of T1 and S1 dark brown; T5–5 with sparse blackish marks.

Male. Unknown.

Comments. Similar to M. longitergus sp. nov., from which it can b differentiated by having a generally larger size, with fore wing 10.75 mm long (vs. 6.48 mm long); pronotum almost entirely orange (vs. almost entirely 6.48); supra-antennal area, occiput and mesoscutum mostly orange (vs. dark brown); scape ventrally orange (vs. dark brown); fore wing vein 3r-m distinctly longer than 2r-m, 2-M distinctly longer than 3-M (vs. 2r-m and 3r-m, as well as 2-M and 3-M, about the same size); clypeus centrally straight (vs. concave). Also structurally very similar to M. versicolor sp. nov., from which it can be readily isolated by the body almost entirely orange (vs. extensively marked with pale yellow and black). Messatoporus versicolor have the pronotum and mesopleuron mostly pale yellow, mesosternum and anterior area of propodeum black and T3–7 black with posterior pale yellow stripes. The two species can be additionally isolated by the posterior transverse carina complete and forming distinct sublateral crests in M. versicolor (vs. medially interrupted and forming very weak crests in M. advenus ).

Biology. Unknown.

Etymology. From the Latin advena, meaning “stranger”, “foreigner”; in reference to its dissimilarity from most other species and from the general definition of the genus, e.g. lacking the propodeal wrinkles.

Material examined. Holotype ♀ from MEXICO, Oaxaca, Vila Hermosa , 96.5 km SW of Tuxtepec, 1450 m, 20.X.1962, Townes & Townes ( AEIC). Pinned. Tip of left antenna missing; otherwise in good shape.

Distribution. Recorded only from the type locality, in southeastern Mexico ( Fig. 289 ).

Figures

FIGURES 111–114. Lateral view. 111, M. atrifoveus*. 112, M. versicolor*. 113, M. advenus*. 114, M. tibiator.

FIGURES 162–170. Propodeum, dorsal view. 162, M. advenus*. 163, M. paradoxus*. 164, M. badius*. 165, M. albiaterartus*. 166, M. longicaudis*. 167, M. amarelus. 168, M. apertus. 169, M. convexus*. 170, M. laevilatus.

FIGURES 289–296. Distribution maps for species of Messatoporus. 289, M. advenus. 290, M. albiaterartus. 291, M. allomeros. 292, M. amarelos. 293, M. amazonensis. 294, M. amplithorax. 295, M. andinus. 296, M. anepomius.

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.