Messatoporus citreocephalus 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 citreocephalus

description: Messatoporus citreocephalus Santos, sp. nov.   
(Figs 41, 282, 311)  
 Female. Fore wing 7.92 mm. HEAD: Mandible densely covered with long hairs; MLW 2.3; MWW 0.35; dorsal tooth in front view projected upwards, much longer than ventral tooth; ventral tooth triangular. MSM 0.3. Clypeus basally strongly convex, emarginated in its mid-length, more or less triangular, centrally concave; CHW 2.03; CWW 1.86; apical area medially convex, laterally with distinct triangular lobes, its margin very sharp, raised. Antenna with 21 flagellomeres; flagellum uniform; apex of apical flagellomere much narrower than base, distinctly tapered. Supra-antennal area shiny, finely coriarious, very weakly striate near antennal sockets, ventrally and around ocelli slightly concave, without median line. Occipital carina uniformly curved, fading out at distance distinctly longer than basal width of mandible from the hypostomal carina. Temple and gena narrow, gena regular (as in Fig. 260).   
THORAX: Pronotum glabrous, shiny, impunctate, wrinkles at posterior margin vestigial; epomia very weak, 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, glabrate, shiny, impunctate; notaulus reaching about 0.72 of mesoscutum length, weakly impressed, surface over notaulus not wrinkled; scuto-scutellar groove moderately deep, without wrinkles. Subalar ridge weakly projected; epicnemial carina reaching about 0.6 of distance to subalar ridge, irregular; sternaulus complete but weak, medially indistinct, strongly sinuous, smooth; scrobe moderately deep; mesopleural suture ventrally with weak longitudinal wrinkles, wrinkles dorsally vestigial. Mesosternum medially without transverse wrinkles or depressions; median portion of posterior transverse carina of the mesothoracic venter indistinct. Transverse sulcus at base of propodeum very wide, about 1.11 × as long as anterior area of propodeum, medially with very weak transverse striation; metapleuron minutely rugulose, without transverse wrinkles, moderately pilose; juxtacoxal carina represented by very short ridges. Fore tibia distinctly swollen. Mesal lobe of t4 with a distinct cluster of stout bristles. Hind coxa punctate-coriarious.  
PROPODEUM: 1.2 × as long as wide, shiny, glabrate; anterior area almost impunctate; spiracle elongate, SWL 4.00; anterior transverse carina medially slightly arched forwards. Propodeal wrinkles weak, very closely spaced, mostly complete, anteriorly slightly arched forwards, at posterior 0.8 distinctly arched forwards; posterior transverse carina entirely absent.  
WINGS: Fore wing vein 1-Rs+M very weakly 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 0.28 of its own length; vein 2Cua 0.27 × as long as crossvein 2cu-a; bulla of crossvein 2m-cu placed on midlength; cell 1+2Rs small, APH 0.38, pentagonal, distinctly wider than high, AWH 1.43; crossvein 3r-m fully spectral, 2r-m and 3r-m parallel, about same length; vein 3-M distinctly shorter than 2-M; 4-Rs somewhat irregular, apically slightly upcurved; 4-M 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 1.14; vein Cub distinctly convex on posterior half, forming distinctly obtuse angle with vein Cua (not curved); vein 2-1A reaching 0.93 of distance to posterior wing margin.  
METASOMA: First tergite moderately long, about 0.38 × as long as T2–8, approximately cylindrical, ventrolaterally rounded, dorsally glabrate, laterally sparsely pilose; T1LW 4.22; T1WW 1.37; spiracle on 0.5 of its length, slightly prominent; median depression elongate, very shallow; median posterior depression subcircular; lateral depressions absent; ventrolateral carina absent, but traceable as limit between lateral and ventral portions. T2LW 1.34; T2WW 2.41; without small circular depression just behind it; T2–8 densely punctate and minutely and weakly coriarious, densely and uniformly pilose. OST 0.81; ovipositor slender, straight, basally cylindric, apically slightly depressed; dorsal valve with three very weak ridges; ventral valve apex with 10 teeth, widely spaced; surface in between teeth smooth.  
 Color. Head and mesosoma bright orange, metasoma dark brown. Head: bright orange (209,087,034); mouthparts and orbital band restricted to supra-clypeal and supra-antennal areas, whitish; mandible apex blackish; flagellum basally black, gradually turning to light brown towards apex; f8–14 entirely white, f7 and f15 mostly white. Mesosoma: bright orange; fore and mid tibiae white except for vebtral brownish mark; fore t1–4 white, fore t5 and mid tarsus fuscous; hind trochanter mostly dark brown; hind femur mostly light brown, ventrally dark orange, dorsally turning to dark brown apically; basal 0.25 of hind tibia, apical 0.8 of t1 and t2–5 white; apical 0.75 of hind tibia and basal 0.2 of t1 dark brown. Metasoma: dark brown; T1 and S1 orange; T2–8 with posterior pale stripe, very narrow at T8; S2–6 with posteriorly larger posterior pale marks, S6 almost entirely pale.   
 Male. Unknown.   
 Comments. More similar to M. lissonotus, from which it can be differentiated mainly by having generally smaller size, fore wing 7.92 mm long (vs. 10.71–16.66 mm long); propodeum small, rounded, with moderately strong and very closely spaced wrinkles (vs. propodeum moderately large, somewhat flattened, with strong and moderately closely spaced wrinkles); ovipositor much shorter, OST 0.81 (vs. 1.66); epomia distinct only after diverging from collar (vs. complete); and notaulus weakly impressed, smooth (vs. deeply impressed, with short transverse wrinkles). Also somewhat similar to M. convexus sp. nov., which it can be readily isolated from M. citreocephalus by the pronotum and mesoscutum mostly black (vs. entirely orange); supra-antennal area, occiput and most of gena black (vs. orange); ovipositor much longer, OST 1.36; and mesoscutum strongly convex (vs. moderately convex).   
 Biology. Unknown.   
 Etymology. From the Greek words kitrea, meaning “citrus”, and kephale, meaning “head”; in reference to the almost entirely orange head, a very unusual feature in Messatoporus and in Cryptinae as a whole.   
 Material examined. Holotype ♀ from PERU, Avispas, nr. Marcapata, 300 m, 1–15.X.1962, L. Peña (AEIC). Pinned. In good shape.   
 Distribution. Recorded only from the type locality, in Peruvian Amazon Basin (Fig. 311).
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 87-89, DOI: 10.11646/zootaxa.3634.1.1, http://zenodo.org/record/5262081