Labena iquitosica Sääksjärvi, Bordera & González-Moreno, 2010

Marinho, Luana S. & Fernandes, Daniell R. R., 2025, Taxonomy of Labena Cresson, 1864 (Hymenoptera: Ichneumonidae: Labeninae) from Brazil, with description of two new species, Zootaxa 5660 (1), pp. 1-52 : 42-45

Labena iquitosica Sääksjärvi, Bordera & González-Moreno, 2010

Figs. 50−51

Labena iquitosica Sääksjärvi, Bordera & González-Moreno, 2010: 103-119 . Yu et al. 2016 [database on flash-drive]. Holotype ♀, PERU (UNMSM) [original designation].

Material examined (1♀). BRAZIL, Maranhão, Açailândia / Faz. [Farm] Itabaiana , Arm. [Trap] Ma- / laise, 10- 16.IX.2001, F. / Limeira-de-Oliveira & J.T. Câmara, cols. [collectors] (1♀, CZMA) .

Diagnosis. This species can be distinguished from other Neotropical Labena species by a combination of the following characters: propodeum with area superomedia with a smooth, large prominence; area central obliterated by fusion of the lateromedian longitudinal carina; area lateral and area petiolaris modified into complex patterns of grooves.

Remarks. Additional characters from the material examined from the states of Maranhão ( Brazil). Body length 23 mm, except ovipositor. Overall coloration is reddish-yellow ( Figs. 50A–D ). Head ( Figs. 50B–C ). Transverse brown band between the occipital carina and occiput; transverse brown band on ocelli, extending to the side of frons. Antenna with 28 flagellomeres; flagellum dark brown, flagellomeres I and II brown. Mandible is bidentate with a striate base, the upper tooth larger than the lower tooth; mandible basal width 0.53 mm. Malar space width 0.38 mm. Ocellus diameter 0.87 mm; distance between anterior and posterior ocellus 0.14 mm; shortest distance between posterior ocellus and compound eye 0.48 mm; distance between posterior ocelli 0.36 mm. Compound eye length 2.70 mm. Frons slightly convex, finely punctate with dense setae, width of 2.22 mm. Face very striate, with median carina, width 1.86 mm. Wing. Fore wing length 18.44 mm, hyaline with a light brown spot at apex; areolet shorter than the length of distal abscissa of M, with 3rs-m slightly shorter than 2rs-m. Hind wing length 13.66 mm. Mesosoma ( Fig. 50E ). Mesoscutum without black border, with two longitudinal brown bands. Pronotum without epomia, with upper posterior part punctate and with dense setae. Propleura punctate and with dense setae. Scuto-scutellar groove black, shallow with dense setae. Scutellum slightly concave, lateral carina punctate with dense setae, reddish-yellow with brown posterior part. Metanotum (postscutellum) with brown posterior part. Propodeum with anterior part without transverse band; area basalis rectangular, wider than long dark brown; area externa longer than wide, without spot; area dentipara without spot; area superomedia with a smooth, conspicuous salience; lateromedian longitudinal carina fused; area lateral and area petiolaris modified into a complex pattern of grooves and planes; lateromedian longitudinal carinae fused posteriorly. Fore legs with one tibial spur, tarsomeres with apical setae fringes; mid legs with tibiae dilated medially, with two tibial spurs, without slender setae scattered on outer surface; hind legs slender, not medially dilated, with reddish-yellow tibia and tarsomeres, with two tibial spurs. Metasoma. Tergite I 3.56 mm in length, basal width 0.78 mm and apical width 1.45 mm; tergite II 2.41 mm in length, basal width 1.66 mm and apical width 2.02 mm; tergite III 2.20 mm in length, basal width 2.11 mm and apical width 2.34 mm. Metasoma reddish-yellow, with black central spot; tergites VI–VII dark brown. Ovipositor laterally compressed, apex slightly tapered; upper valve with marked teeth and transverse striae; lower valve with marked proximal teeth and transverse striae.

Distribution. Peru, Brazil ** (Maranhão *) ( Fig. 51 ) (Sääksjärvi et al. 2010; Yu et al. 2016).

Discussion. Labena iquitosica resembles L. obscura Gauld, 2000 in having highly modified propodeum with anterior part of the area superomedia forming a rounded conical projection resembling a salience. But it differs L. iquitosica has a predominantly yellow mesosoma (with a touch of orange). L. obscura is predominantly black with yellowish spots. The analyzed specimen of L. iquitosica had a reddish-brown variation in coloration, which differs from the original designation which is completely yellow. This species belongs to the striata species-group.

Figures

FIGURE 50. A–F. Female of Labena iquitosica Sääksjärvi, Bordera & González-Moreno, 2010. A. Habitus, lateral view. B. Head, dorsal view. C. Head, front view. D. Habitus, dorsal view. E. Propodeum, dorsal view. F. Apex of ovipositor, lateral view.

FIGURE 51. Distribution of Labena iquitosica Sääksjärvi, Bordera & González-Moreno, 2010 (yellow star= type locality, red circle= new record).