Messatoporus maculiscus 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 : 148-149

Messatoporus maculiscus Santos , sp. nov.

( Figs 3 , 57 , 141 , 178 , 213 , 342 )

Female. Fore wing 6.52 mm. HEAD: Mandible with moderately sparse and long hairs; MLW 2; MWW 0.34; dorsal tooth in front view projected upwards, much longer than ventral tooth; ventral tooth triangular. MSM 0.26. Clypeus basally convex, apically abruptly flattened, centrally concave; CHW 2.83; CWW 1.42; apical area medially concave, laterally with distinct triangular lobes, its margin regular, not raised. Antenna with 26 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, median line distingishable only as a weakly smoother area. 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 sparsely pilose, mat, impunctate, ventrally with strong wrinkles; epomia weak, complete, short, ending far from dorsal margin of pronotum, after diverging from pronotal collar approximately straight. Mesoscutum moderately and uniformly convex, subcircular, 1.15 × as long as wide, densely covered with short hairs, mat, densely punctulate notaulus reaching about 0.73 of mesoscutum length, moderately impressed, surface over notaulus with weak and short transverse wrinkles; scuto-scutellar groove moderately deep, with vestigial longitudinal wrinkles. Subalar ridge weakly projected; epicnemial carina reaching about 0.7 of distance to subalar ridge, more or less uniformly curved; sternaulus moderately strong, wide and shallow at posterior 0.25, strongly sinuous, with weak vertical wrinkles; scrobe very shallow; mesopleural suture with vestigial longitudinal wrinkles. Mesosternum medially with short transverse wrinkles; median portion of posterior transverse carina of the mesothoracic venter short and almost indistinct, straight. Transverse sulcus at base of propodeum moderately wide, about 0.64 × as long as anterior area of propodeum, impunctate; metapleuron minutely rugulose, with vestigial wrinkles, densely pilose; juxtacoxal carina represented by very short ridges. Fore tibia not distinctly swollen. Mesal lobe of t4 with 3–4 bristles. Hind coxa with weak punctures separated by about their own diameter.

PROPODEUM: 1.05 × as long as wide, mat, moderately pilose; anterior area moderately punctate; spiracle elongate, SWL 4.00; anterior transverse carina medially slightly arched forwards. Propodeal wrinkles moderately strong, very closely spaced, mostly complete or mostly incomplete and overlapped, with some disperse complete wrinkles, 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 more or less traceable; vein 1M+Rs anteriorly irregular, posteriorly curved; fore wing crossvein 1 cu-a basad of 1M+Rs by 0.29 of its own length; vein 2Cua 0.57 × as long as crossvein 2cu-a; bulla of crossvein 2m-cu placed mostly on posterior half; cell 1+2Rs small, APH 0.76, pentagonal, distinctly higher than wide, AWH 0.73; 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 distinctly sinuous; 4-M semi-spectral, slightly curved backwards. Hind wing vein 1-M forming straight angle with vein Cua; vein 2-Rs tubular, apically spectral, reaching wing margin; HW1C 1.43; vein Cub distinctly convex on posterior half, forming straight angle with Cua; vein 2-1A reaching 0.73 of distance to posterior wing margin.

METASOMA: First tergite moderately long, about 0.43 × as long as T2–8, somewhat depressed, ventrolaterally rounded, dorsally glabrate, laterally moderately pilose; T1LW 3.84; T1WW 1.56; spiracle on 0.48 of its length, slightly prominent; median depression absent; median posterior depression elongate; lateral depressions absent; ventrolateral carina absent. T2LW 1.24; T2WW 2.8; thyridium longer than wide, without small circular depression just behind it; T2–8 covered with small, shallow foveae, densely and uniformly pilose. OST 0.72; ovipositor moderately stout, straight, basally cylindric, apically slightly 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 black, mesosoma black, orange and yellow, metasoma dark brown and yellow. Head: black; clypeus, mandible except apex, mouthparts, malar space, supra-clypeal area, scape ventrally and orbital band almost interrupted at dorsal margin of eye, pale yellow (239,224,136); f10–16 entirely white, f17 dorsally white. Mesosoma: mostly orange (206,089,042); pronotum, mesoscutum, scuto-scutellar groove, apical margin of scutellum, postscutellum, anterior area of propodeum, black; dorsal margin of mesopleuron, ventral portion of epicnemium, anterior 0.2 of area over sternaulus, hind femur, apical 0.6 of hind tibia, basal 0.3 of t1 and apical 0.5 of t5, dark brown (076,056,047); collar and dorsal margin of pronotum connected, subcircular spot on mesoscutum, scutellar carina, scutellum, postscutellum, tegula, subalar ridge, central rounded spot on mesopleuron, dorsal division of metapleuron, lateral marks on propodeum, light yellow (233,220,124); fore leg pale yellow, fore femur dorsally light fuscous; mid tarsus fuscous; mid tibia, basal 0.4 of hind tibia, apical 0.7 of hind t1, t2–4 and basal 0.5 of t5, whitish. Mesosoma: dark brown, lighter towards posterior tergites; basal 0.4 of T1 light yellow; T1–8 with pale yellow posterior stripes; S1–6 light brown with posterior yellow stripes.

Male. Fore wing 6.53–8.57 mm long. Very similar to female, except for the following: antenna with 28 flagellomeres; orbital band shortly interrupted near dorsal margin of eye; propleuron, ventral 0.8 of mesopleuron and mesosternum light yellow; fore leg light yellow except femur, light brownish; mid coxa and trochanters pale yellow, femur light orange.

Variation. Fore wing 7.02–7.71 mm long. Antenna sometimes with 25 flagellomeres; first flagellomeres sometimes brown; central mark on mesopleuron covering 0.25–0.6 of its area; posterior corner of mesopleuron sometimes blackish; anterior area of propodeum sometimes laterally orange or brown; orange areas of propodeum sometimes turned to blackish; fore femur sometimes pale orange; basal 0.25 of hind femur sometimes ventrally orange; mid tibia sometimes with brownish mark; metasomal tergites and sternites sometimes black.

Comments. Similar to M. tenuiorbis sp. nov., from which it can be differentiated by the mesopleuron and mesosternum mostly orange, mesopleuron with central yellow mark (vs. mesopleuron and mesosternum mostly blackish); dorsal margin of pronotum yellow (vs. black); fore coxa not distinctly swollen (vs. distinctly swollen); fore wing vein 2-M about as long as 3-M (vs. 3-M distinctly shorter than 2-M); and pronotum impunctate (vs. densely punctate).

Biology. Unknown.

Etymology. From the Latin macula, meaning “mark”, added to the diminutive suffix -iscus; in reference to the small central mark on mesopleuron.

Material examined. 5 ♀, 1 ♂. Holotype ♀ from BRAZIL, Santa Catarina, Nova Teutônia , 300–500 m, XII.1968, FPlaumann ( CNCI). Pinned. Apical third of right antenna missing; otherwise in good shape.

Paratypes: 1 ♀ from BRAZIL, Rio de Janeiro, Rio de Janeiro, I.1939, RCShannon ( USNM) . 1 ♀ from BRAZIL, Santa Catarina, Nova Teutônia , 300–500 m, 5.IV.1938, FPlaumann ( BMNH) . 1 ♀, same data except 21.VIII.1948 ; 1 ♂, same data except IV.1966 ; 1 ♀, same data except IV.1966 ( CNCI) . 1 ♀, same data except 30.VIII.1938 ( WUR) .

Distribution. Atlantic Forest in southern and southeastern Brazil (Fig. 316342

Figures

FIGURES 2–4. Terms for structures used in the present work. 2, Messatoporus nigriscutus. head, frontal view; aac, apical area of the clypeus; clp, clypeus; cma, clypeus maximum width; cmi, clypeus minimum width; clh, clypeus height; sca, supra-clypeal area; saa, supra-antennal area. 3, M. maculiscus; mdl, mandible length 4, M. orientalis; mls, malar space; mbw, mandible basal width; gen, gena.

FIGURES 56–60. Lateral view. 56, M. tenuiorbis*. 57, M. maculiscus*. 58, M. pleuriflavus*. 59, M. nigriangularus*. 60, M. elektor*.

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 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 213–217. Hind leg. 213, M. maculiscus. 214, M. complexifemur*. 215, M. jalapa. 216, M. ellipsicavus*. 217, M. paralissonotus.

FIGURES 337–344. Distribution maps for species of Messatoporus. 337, M. longicaudis. 338, M. longitergus. 339, M. lordos. 340, M. lunatus. 341, M. maculipes. 342, M. maculistis. 343, M. matucanus. 344, M. mesonotator.

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.