Messatoporus titans 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 : 191-193

Messatoporus titans Santos , sp. nov.

( Figs 66 , 186 , 288 , 368 )

Female. Fore wing 14.92 mm. HEAD: Mandible densely covered with moderately long hairs; MLW 1.6; MWW 0.5; dorsal tooth in front view projected upwards, much longer than ventral tooth; ventral tooth triangular. MSM 0.34. Clypeus basally evenly convex, apically gradually flattened, centrally concave; CHW 2.44; CWW 2.33; apical area medially concave, laterally slightly projected, its margin very sharp, raised. Antenna with 24 flagellomeres; flagellum uniform; apex of apical flagellomere about as wide as base, not distinctly tapered. Supraantennal area shiny, with moderately dense punctation, not striate near antennal sockets, ventrally and around ocelli distinctly concave, with slight median line. Occipital carina dorsally distinctly bell-shaped, fading out at distance about as long as basal width of mandible from the hypostomal carina. Temple and gena moderately wide, gena regular (as in Fig. 260 ).

THORAX: Pronotum moderately pilose, shiny, densely punctate, with weak and short wrinkles at ventral half of posterior margin; epomia strong, complete, short, ending far from dorsal margin of pronotum, after diverging from pronotal collar distinctly curved. Mesoscutum moderately convex, flattened posteriorly, ovoid, 1.31 × as long as wide, densely covered with short hairs, shiny, densely punctate; notaulus reaching about 0.73 of mesoscutum length, deeply impressed, surface over notaulus with weak and short transverse wrinkles; scuto-scutellar groove moderately deep, without wrinkles. Subalar ridge moderately projected; epicnemial carina reaching about 0.7 of distance to subalar ridge, irregular; sternaulus moderately strong, wider on posterior apex, strongly sinuous, with weak vertical wrinkles; scrobe very shallow; mesopleural suture ventrally with weak longitudinal wrinkles, wrinkles dorsally vestigial. 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 at base of propodeum very wide, about 0.8 × as long as anterior area of propodeum, with distinct transverse striation; metapleuron densely punctate, without transverse wrinkles, densely pilose; juxtacoxal carina absent. Fore tibia distinctly swollen. Mesal lobe of t4 with a distinct cluster of stout bristles. Hind coxa with moderately strong punctures separated by about their own diameter, dorsally foveolate.

PROPODEUM: 1.15 × as long as wide, shiny, moderately pilose; anterior area sparsely punctate, with a median cluster of punctures; spiracle elongate, SWL 5.4; anterior transverse carina medially slightly arched forwards. Propodeal wrinkles moderately strong, closely spaced, mostly complete, anteriorly almost straight, posteriorly slightly arched backwards; posterior transverse carina entirely absent.

WINGS: Fore wing vein 1-Rs+M distinctly sinuous, with bulla placed around its midlength; crossvein 1m-cu irregular, limit between 1m-cu and 1-Rs+M clearly traceable; vein 1M+Rs anteriorly irregular, posteriorly curved; fore wing crossvein 1 cu-a basad of 1M+Rs by 0.53 of its own length; vein 2Cua 0.77 × as long as crossvein 2cu-a; bulla of crossvein 2m-cu placed on midlength; cell 1+2Rs small, APH 0.73, subquadratic, about as high as wide, AWH 1.12; crossvein 3r-m partially spectral, 2r-m and 3r-m subparallel, about same length; vein 3-M almost indistinct; 4-Rs distinctly sinuous; 4-M tubular, slightly curved backwards. Hind wing vein 1-M forming distinctly obtuse angle with vein Cua; vein 2-Rs entirely tubular, apically weaker, reaching wing margin; HW1C 0.67; vein Cub distinctly convex on posterior half, forming distinctly obtuse angle with vein Cua (basally curved); vein 2-1A reaching 0.93 of distance to posterior wing margin.

METASOMA: First tergite moderately long, about 0.43 × as long as T2–8, somewhat depressed, ventrolaterally angled, dorsally glabrate, laterally sparsely pilose; T1LW 3.8; T1WW 1.74; spiracle on 0.51 of its length, distinctly prominent; median depression elongate, distinct; lateral and median posterior depressions absent; ventrolateral carina absent, but traceable as limit between lateral and ventral portions. T2LW 1.44; T2WW 1.98; thyridium longer than wide, without small circular depression just behind it; T2–8 scarcely punctate and minutely and weakly coriarious, dorsally sparsely pilose, laterally moderately pilose. OST 1.37; ovipositor moderately stout, straight, basally cylindric, apically distinctly depressed; dorsal valve with three moderately strong ridges; ventral valve apex with 4 teeth, 1st, 2nd and 3th widely spaced; surface anterior to first tooth rugulose.

Color. Head, meso– and metasoma black and bright yellow. Head: black; clypeus, basal 0.5 of mandible, mouthparts, malar space, supra-clypeal area and complete orbital band, bright yellow (230,212,095); f7–11 entirely whitish, f6 and f12 partially whitish. Mesosoma: black; pronotal collar, dorsal margin of pronotum, most of propleuron, subcircular spot on mesoscutum, scutellar carina, scutellum except posterior 0.2, axillary carinae, tegula, subalar ridge, central mark on mesopleuron, mesoscutum except around sternaulus, dorsal division of metapleuron, metapleural triangle, dorsal 0.7 of metapleuron, subtriangular spots at anterior area of propodeum and sublateral marks at posterior area, bright yellow; fore and mid legs mostly bright yellow; mesal face of fore coxa, mesal and lateral longitudinal stripes at mid coxa, dorsal stripe at fore and mid first trochanters, lateral face of fore and mid femora and ventral longitudinal stripe at fore tibia, dark brown; apical 0.7 of fore and mid t5 blackish; hind coxa with lateral and mesal large dark brown marks; hind trochanters and femur dark brown; hind tibia and tarsus bright yellow. Metasoma: black; T1 dorsally bright yellow at anterior 0.5 and posterior 0.1; T2–7 with posterior and lateral bright yellow stripes; T8 with lateral bright yellow stripe; S2 with posterior bright yellow stripe; S3–6 entirely bright yellow.

Male. Unknown.

Comments. Very similar to M. transversostriatus , both in general morphology and color patterns, particularly on propodeum and mesopleuron. In fact, M. titans can be easily mistaken with of the most extensively black specimens of M. transversostriatus , except for the following characters: mid and hind coxae black and whitish, hind trochanters and femur dark brown (vs. mid and hind coxae, hind trochanter and femur mostly bright to dark orange); S1 black (vs. whitish); ovipositor ventral valve with four teeth (vs. eight); dorsal valve with three moderately strong ridges (vs. five); and scuto-scutellar groove smooth (vs. with distinct longitudinal wrinkles). The same combination of characters can be used to distinguish M. titans from M. amplithorax sp. nov. and M. interceptus sp. nov..

Biology. Unknown.

Etymology. From the Greek Titan , mythological deities in Ancient Greek culture; in reference to its large size and also to the stout, rough tip of the ovipositor.

Material examined. Holotype ♀ from PERU, Cajamarca, Jaen , 850 m, 27.IV.1984, MCooper ( BMNH). Pinned. Tip of left antenna, right mid leg apicad to coxa and left mid tarsus missing; left hind tibia and tarsus and left hind wing, detached and re-glued to the specimen.

Distribution. Recorded only from the type locality, in northwestern Peru ( Fig. 368 ).

Figures

FIGURES 66–70. Lateral view. 66, M. titans*. 67, M. transversostriatus. 68, M. amplithorax. 69, M. interceptus. 70, M. allomeros*.

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 279–288. Ovipositor tip. 279, M. discoidalis. 280, M. paradoxus*. 281, M. tibiator. 282, M. citreocephalus*. 283, M. teutonicus*. 284, M. compressicornis. 285, M. nigriscutus*. 286, M. bennetti*. 287, M. semiaurantigaster*. 288, M. titans*.

FIGURES 361–368. Distribution maps for species of Messatoporus. 361, M. semiaurantigaster. 362, M. subalaris. 363, M. tenuiorbis. 364, M. tenuissimus. 365, M. terebrator. 366, M. teutonicus. 367, M. tibiator. 368, M. titans.

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.