Messatoporus keraiopetalus Santos & Aguiar 2013, sp. nov.
Creators: name: Santos, Bernardo F.
name: Aguiar, Alexandre P.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Messatoporus
Messatoporus keraiopetalus

description: Messatoporus keraiopetalus Santos, sp. nov.   
(Figs 74, 277, 332)  
 Female. Fore wing 9.76 mm. HEAD: Mandible densely covered with long hairs; MLW 1.84; MWW 0.43; dorsal tooth in front view projected upwards, much longer than ventral tooth; ventral tooth triangular. MSM 0.29. Clypeus basally strongly convex, emarginated in its mid-length, abruptly flattened, centrally concave; CHW 2.89; CWW 3.9; apical area medially straight, laterally slightly projected, its margin very sharp, raised. Antenna with 24 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, scarcely punctate, not striate near antennal sockets, ventrally and around ocelli slightly concave, median line distingishable only as a weakly smoother area. Occipital carina uniformly curved, fading out at distance about as long as basal width of mandible from the hypostomal carina. Temple and gena moderately wide, gena somewhat swollen and projected (as in Fig. 261).   
THORAX: Pronotum glabrous, shiny, impunctate, ventrally moderately striate; epomia weak, complete, moderately long, ending near dorsal margin of pronotum, after diverging from pronotal collar distinctly curved. Mesoscutum strongly and uniformly convex, subcircular, 1.17 × as long as wide, sparsely pilose, shiny, asperous; notaulus reaching about 0.75 of mesoscutum length, moderately impressed, surface over notaulus not wrinkled; scuto-scutellar groove moderately deep, with vestigial longitudinal wrinkles. Subalar ridge weakly projected; epicnemial carina reaching about 0.7 of distance to subalar ridge, distinctly sinuous; sternaulus moderately strong, wider on posterior apex, strongly sinuous, smooth; 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 and almost indistinct, arched backwards. Transverse sulcus at base of propodeum very wide, about 1.07 × as long as anterior area of propodeum, impunctate; metapleuron moderately punctate, without transverse wrinkles, moderately pilose; juxtacoxal carina absent. Fore tibia distinctly swollen (doubt). Mesal lobe of t4 with a distinct cluster of stout bristles. Hind coxa with weak punctures separated by more than their own diameter.  
PROPODEUM: 1.18 × as long as wide, shiny, sparsely pilose; anterior area almost impunctate; spiracle elongate, SWL 4.86; anterior transverse carina medially slightly arched forwards. Propodeal wrinkles strong, closely spaced, anteriorly complete, posteriorly mostly 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 0.4; crossvein 1m-cu more or less uniformly curved, 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 0.45 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 0.58, pentagonal, distinctly wider than high, AWH 1.23; crossvein 3r-m fully spectral, 2r-m and 3r-m subparallel, about same length; vein 3-M distinctly longer than 2-M; 4-Rs straight, apically slightly upcurved; 4-M semi-spectral, straight. Hind wing vein 1-M forming distinctly obtuse angle with vein Cua; vein 2-Rs tubular, apically spectral, reaching wing margin; HW1C 1.12; vein Cub distinctly convex on posterior half, forming straight angle with Cua; vein 2-1A reaching 0.87 of distance to posterior wing margin.  
METASOMA: First tergite moderately long, about 0.42 × as long as T2–8, somewhat depressed, ventrolaterally rounded, dorsally glabrate, laterally moderately pilose; T1LW 3.32; T1WW 1.6; spiracle on 0.52 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 1.07; T2WW 2.05; thyridium longer than wide, with small circular depression just behind it; T2–8 covered with small, shallow foveae, densely and uniformly pilose. OST 0.86; ovipositor moderately stout, straight, basally cylindric, apically slightly depressed; dorsal valve with four moderately strong ridges; ventral valve apex with 9 teeth, apical teeth progressively more closely spaced; surface anterior to first tooth rugulose.  
 Color. Head, mesosoma and metasoma black and whitish. Head: black; clypeus, mandible except apex and small basal spot, mouthparts, malar space, supra-clypeal area, ventral spot at scape and complete orbital band, light yellow (227,212,149); f5–7 entirely white, f4 partially white, f8 almost entirely white and f9–14 with dorsal white longitudinal band. Mesosoma: black; collar, dorsal margin of pronotum, propleuron, subcircular spot on mesoscutum, scutellar carina, scutellum, axillar carinae, postscutellum, tegula, subalar ridge, central mark on mesopleuron, mesosternum, dorsal division of metapleuron, metapleural triangle, metapleuron except posterior apex and arc-shaped, quadratic mark on propodeum, light yellow; fore and mid coxae and first trochanters whitish, coxae with apical and posterior dark brown marks, first trochanters with basal dark brown mark; fore and mid second trochanter, femur, tibia and tarsus bright yellow (227,178,068), with strong dorsal and weak ventral brown stripes on femora, with ventral brown marks at all length of fore tibia and basal 0.3 of mid tibia, mid tarsus fuscous, fore and mid t5 blackish; hind coxa whitish with three longitudinal stripes, anterior and posterior ones reaching 0.5 of its length, lateral one reaching coxa apex; hind first trochanter whitish with basal blackish mark; second trochanter blackish, with apical 0.2 dark yellow; hind femur dorsally bright yellow, ventral face blackish, wider apically; hind tibia bright yellow, with apical blackish mark, hind tarsus basally bright yellow, whitish towards apex. Metasoma: black; T1 laterally with anterior and posterior 0.2 whitish, dorsally anterior 0.5 whitish; T2–7 with posterior and lateral whitish stripes, T8 only with lateral stripes; S1–6 whitish, S2–5 with progressively smaller brown lateral marks.   
 Male. Fore wing 5.09–9.64 mm long. Very similar to female, except for the following: scape with ventral whitish spot; antenna with 20–23 flagellomeres; hind femur ventrally blackish only at posterior 0.4; S6 with small lateral brownish mark.   
 Variation. Fore wing 6.02–11.64 mm long. Mandible sometimes mostly black; antenna with 21–24 flagellomeres; wrinkles over notaulus sometimes very weak or absent; metapleural triangle sometimes marked with yellow; hind tibia sometimes without apical black mark; hind tarsus sometimes entirely light yellow. All whitish areas sometimes bright yellow or buff.   
 Comments. Messatoporus keraiopetalus sp. nov. is part of a group of four very close species, which apparently form a monophyletic group (Figs 71–75; see Comments under M. compressicornis). Among these species, M. keraiopetalus can be differentiated from M. depressifrons sp. nov. by having clypeus basally strongly convex, emarginated in its mid-length, abruptly flattened (vs. very slightly and more or less uniformly convex); supra-antennal area with median smoother area (vs. with a median depression); epomia weak, complete (vs. moderately strong but distinct only after diverging from collar); transverse sulcus of propodeum very long, 1.07 × as long as anterior area of propodeum (vs. moderately long, 0.59 × as long as anterior area); and fore wing vein 3- M distinctly longer than 2-m (vs. about the same size).   
 It can be separated from M. nigriscapus sp. nov. by the orbital band complete (vs. shortly interrupted); mandible basally yellow (vs. entirely black); collar yellow (vs. black); supra-antennal area with median smoother area (vs. with slight median carina); median portion of posterior transverse carina of the mesothoracic venter arched backwards (vs. arched forwards); and spiracle of propodeum elongate, SWL 4.86 (vs. elliptic, SWL 3.37) It can also be separated from M. compressicornis by the hind femur ventrally black, dorsally deep yellow (vs. entirely orange); fore and mid femora dorsally with strong longitudinal brown stripes (vs. entirely orange); ovipositor dorsal valve with four moderately strong ridges (vs. five); supra-antennal area with median smoother area (vs. with slight median carina); and mesosternum medially with short transverse wrinkles (vs. without transverse wrinkles).   
 Biology. Unknown.   
 Etymology. From the Greek words keraia, for “any horn like structure”, or “antenna”, and petalos, meaning “broad”; in reference to the widened and compressed flagellum.   
 Material examined. 12 ♀, 22 ♂♂. Holotype ♀ from PANAMA, El Cemeno, IV–V.1939, Zetek (USNM). Pinned. In good shape.   
Paratypes: 1 ♀ from GUATEMALA, Sacapa, 2 km N Santa Cruz, XI.1986, MJSharkey (AEIC). 1 ♀ from GUATEMALA, Suchitepéques, Variedades, 150 m, 1.IX.1946, CVaurie & PVaurie (AMNH). 1 ♀ from HONDURAS, Sangrelaya, 13.IV.1924 (USNM). 1 ♂ from COSTA RICA, Guanacaste, San Rosa park, Dry hill, 2.I.1976, DHJanzen; 1 ♂, same data except 12.VII.1978; 1 ♂, same data except 25.VI.1978; 1 ♂, same data except 28.V.1978; 1 ♂, same data except 25.X.1978; 1 ♂, same data except 10.I.1978; 1 ♂, same data except 9.IX.1978; 1 ♂, same data except 24.VI.1978; 1 ♂, same data except 15.I.1978; 1 ♂, same data except 6.IX.1977; 1 ♂, same data except Riparian, 20.I.1978; 1 ♂, same data except 20.V.1978; 1 ♂, same data except 12.VIII.1978; 1 ♂, same data except 1.I.1978; 1 ♂, same data except 10.I.1978; 1 ♂, same data except 25.V.1978; 3 ♀, same data except 20 km SW Cañas, Estación Experimental Enrique Nuñez, 5–17.XI.1991, ASMenke. 2 ♀ 2 ♂♂ from COSTA RICA, Escazú, 21.V.1987, Townes & Townes; 1 ♂, same data except 23.V.1987; 1 ♀ 1 ♂, same data except 24.V.1987; 1 ♂, same data except 25.V.1987. 1 ♀ from PANAMA, Las Cumbres, 26.V–8.VI.1982, HWolda (AEIC). 1 ♀ from PANAMA, Canal Zone, Barro Colorado Island, IV–V.1939, JZetek; 1 ♂, same data except IV–V.1942; 1 ♀, same data except El Cemeno, I.1941 (USNM).  
 Distribution. Central America, from Guatemala to Panama (Fig. 332).
description: Published as part of Santos, Bernardo F. & Aguiar, Alexandre P., 2013,  Phylogeny and revision of  Messatoporus  Cushman (Hymenoptera, Ichneumonidae, Cryptinae), with descriptions of sixty five new species , pp. 1-284 in Zootaxa 3634 (1) on pages 132-134, DOI: 10.11646/zootaxa.3634.1.1, http://zenodo.org/record/5262081