Fractipons glabriusculus, Bordera, Santiago & Gonzalez-Moreno, Alejandra, 2011

Bordera, Santiago & Gonzalez-Moreno, Alejandra, 2011, The species of the Neotropical genus Fractipons Townes, 1970 (Hymenoptera, Ichneumonidae, Cryptinae), ZooKeys 76, pp. 55-72 : 64-68

Fractipons glabriusculus sp. n.

Diagnosis.

Mesoscutum smooth and shiny, sometimes with some isolated, short setae (Figs 12, 13). Head in lateral view with upper part of gena rounded (Figs 23, 25). Female malar space 0.5 times width of mandible base (Fig. 20), in male 0.3-0.4 times (Fig. 21). Body entirely yellow–orange, rarely in males darkened dorsally (Figs 6, 7). Flagellum dark brown to black, in female with wide band on flagellomeres 4-7 (Fig. 7), male always without this band (Fig. 6). Occipital carina not conspicuously elevated (Figs 20, 21).

Description.

Female: Body length 4.8-6.2 mm. Head 0.6-0.8 mm long, 1.2-1.5 mm wide. Mesosoma 1.8-2.1 mm long, 1.0-1.1 mm wide (mesoscutum). Fore wing 4.4-4.8 mm long. Petiole 1.0-1.1 mm long. Ovipositor sheath 1.4-1.5 mm long.

Head: Transverse, 1.9 times as wide as long, mostly smooth and shiny, constricted and slightly rounded behind compound eyes. Antenna with 25 flagellomeres, conspicuously thickened from third flagellomere, slightly thin towards apex. First flagellomere 4.5-5.5 times as long as maximum width, flagellomeres from tenth to penultimate flattened below, in this flat area with conspicuous setiferous sensillae. Gena 0.25-0.35 times as long as eye (in dorsal view), upper part in lateral view rounded (Fig. 23). Occiput moderately depressed in centre. Lower face finely, densely punctate, with small central prominence, clypeus rather wide, weakly convex, apical margin slightly arcuate. Malar space with wide granulate groove, about 0.5 times width of mandible base (Fig 20). Posterior ocellus separated from eye by about 1.3-1.4 times its diameter. Space between posterior ocelli 0.6-0.7 times their diameter. Occipital carina joining base of mandible, not conspicuously elevated in genal region (Fig. 20), nearly angular medially, dorsally. Mandible moderately tapered towards apex, lower tooth shorter than upper tooth. Maxillary palpus reaching to ventral part of epicnemial carina.

Mesosoma: Pronotal transverse groove without median longitudinal ridge. Epomia absent. Mesoscutum smooth and shiny with very sparse and short setae (Fig. 12). Median lobe of mesoscutum without median longitudinal groove. Notauli slightly indicated anteriorly. Prescutellar groove without traces of longitudinal carinae. Scutellum moderately convex, polished and smooth or very sparsely punctate, lateral carinae strong, extending about 0.8-0.9 times length. Mesopleuron completely smooth and polished. Mesopleural impression below speculum consisting of an isolated pit some distance in front of mesopleural suture. Sternaulus weak on anterior 0.3, almost absent on hind 0.7. Epicnemial carina reaching 0.8 time height of mesopleuron, weak or absent at upper margin. Posterior transverse carina of mesosternum widely interrupted in front of each mid coxa, laterally forming low flat crest. Areolet of fore wing open. Marginal cell 2.6-2.7 times as long as deep. Ramulus absent. Vein 2m-cu weakly inclivous, with two bullae. Vein cu-a opposite Rs+M or slightly basal. Abscissa of Cu1 between 1m-cu and Cu1a 2.2 times longer than Cu1b, both clearly inclivous. Hind wing with M+Cu moderately curved at apical 0.45. Abscissa of M+Cu between M and Cu1 strongly inclivous, 1.3-1.4 times as long as cu-a which is strongly reclivous. Hind femur about 5.0-5.3 as long as high. Propodeum with anterior transverse carina strong and complete, posterior transverse carina absent centrally, a broad low flat crest, lateral longitudinal carina only present apically, distad of crests. Lateromedian carina partially present in area basalis. Area superomedia absent. Pleural carina rounded and strong. Submetapleural carina forming anterior strong flat crest. Juxtacoxal carina absent. Propodeal spiracle elongate.

Metasoma: First metasomal tergite smooth, polished with some sparse setiferous punctures dorsally. Median dorsal and lateral carinae absent. Postpetiole about 0.7 times as long as maximum width (measured dorsally). Second and remaining tergites polished, with very weak dense setiferous punctures. Gastrocoelus wider than long, thyridium finely granulate. Ovipositor straight, with nodus and five dorsal apical teeth on upper valve, lower valve with three oblique notches and 4-5 small complete and transverse apical teeth. Ovipositor sheaths 0.9-1.0 times length of hind tibia.

Colour: Body yellowish orange. Flagellum brown to blackish with a white band on flagellomeres 4-7. Sometimes mandibular teeth and hind tarsus slightly infuscated. Wing membrane with fine yellowish tinge (Fig. 7).

Male: Body length 4.1-6.0 mm. Head 0.65-0.73 mm long, 1.2-1.3 mm wide. Mesosoma 1.9-2.0 mm long, 0.9-1.0 mm wide (at widest point of mesoscutum). Fore wing 4.3-4.7 mm long. Petiole 0.9-1.0 mm long.

Similar to female except as follows:

Head: Transverse, 1.8-1.9 times as wide as long. Antenna with 24-26 flagellomeres. Flagellum slightly and uniformly tapered to apex. First flagellomere 4.6-5.1 times as long as maximum width. Tyloids narrow and elevated on flagellomeres 10(11)-13(14) (Figs 28, 29), with small secretory pores. Gena 0.5-0.6 times as long as eye, upper part conspicuously more rounded (Fig. 25). Malar space about 0.3-0.4 times as wide as basal width of mandible (Fig. 21). Posterior ocellus separated from eye by about 1.2-1.3 times its diameter. Space between posterior ocelli 0.45-0.55 times their diameter.

Mesosoma: Marginal cell 2.7-3.0 times as long as deep. Hind femur about 5.0-5.2 as long as high.

Metasoma: Postpetiole 0.7-0.9 times as long as wide. Second and remaining tergites with dense, fine setiferous punctures.

Colour: Antenna without white ring. Flagellum entirely dark brown with scape, pedicel, annellus and base of first flagellomere ventrally yellow, dorsally orange. Wing membrane with fine yellowish tinge (Fig. 6).

Material examined.

Type material. Holotypefemale with labels as follows: Argentina, Horco Molle near Tucumán, 7-13-III-1966, Lionel Stange (AEIC). Paratypes: Argentina, 1 ♀, Horco Molle near Tucumán, 1-I-1966, H. & M. Townes; 1 ♂, same locality, 8-15-I-1966, H. & M. Townes (all AEIC); 1 ♂, same locality, 15-19-I-1966, Lionel Stange (CEUA); 1 ♂, same locality, 18-I-1966, H. & M. Townes; 1 ♀, same locality, 7-13-III-1966, Lionel Stange; 1 ♂, 11 Km W. Las Cejas Tucumán, 3-18-XII-1966, Lionel Stange; 1 ♂, same locality, 7-26-III-1967, Lionel Stange; 1 ♂, same locality, 16-29-IV-1967, Lionel Stange; 1 ♂, same locality, 22-II/8-III-1968, Lionel Stange; 1 ♂, same locality, 9-III/11- IV-1968, Lionel Stange (all AEIC); 1 ♂, Jujuy, 13-I-1966, H. & M. Townes (CEUA); 1 ♂, same locality, 14-I-66, H. & M. Townes. Brazil, 3 ♀♀, M. G. Cáceres, XI-1984, M. Alvarenga; 1 ♀, 2♂♂, Caruaru, 900m, IV-1972, M. Alvarenga; 1 ♀, 1 ♂, Jatai, Goiás XI-1972, F. M. Oliveira; 1 ♂, Silva Jardin, Rio de Janeiro, VIII-1974, F. M. Oliveira (all AEIC).

Variation.

A male from Jujuy, Argentina (14-I-1966), has the hind half of the head, pronotum and anterior part of the mesoscutum dark brown and the mesoscutum more punctate.

Distribution.

Argentina, Brazil (Fig. 32).

Etymology.

The species name refers to the scarcely hairy, almost glabrous scutum.