Theronia tahuythinhi Pham & Broad & Wägele 2013, sp. nov.
Creators: name: Pham, Nhi Thi
name: Broad, Gavin R.
name: Wägele, Wolfgang J.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Theronia
Theronia tahuythinhi

description: Theronia tahuythinhi sp. nov.   
(Figure 15)   Material examined   
 Holotype (♀). Dak Lak, Chu Yang Sin NP, 500 m a.s.l., 3–9 June 2007, Malaise trap, C. v. Achterberg and R. de Vries leg. (RMNH).   
 Paratype (1♀ 3♂). 1♀ (IEBR) 2♂ (RMNH), same data as holotyle; 1♂ Dak Lak, Chu Yang Sin NP, 740–900 m a.s.l., 2–10 June 2007, Malaise trap, C. v. Achterberg and R. de Vries leg. (IEBR).    Diagnosis   
Face with dense, coarse punctures; clypeus flat, slightly raised basally, without tubercles; propodeum with elongate area superomedia; ovipositor straight, length of ovipositor from tip of hypopygium 1.25 × length of hind tibia.   Description of holotype   
 Body length 11.7 mm, fore wing 10.8 mm, ovipositor 3.8 mm. Head. Antenna with 39 flagellomeres, first flagellomere 1.7 × length of second; diameter of lateral ocellus 0.8 × ocellar–ocular distance; frons pubescent dorsally, without carina between antennal sockets; inner margins of eyes strongly concave above antennal sockets, convergent ventrally; face 0.87 × as high as wide, with coarse punctures, pubescent, upper margin moderately deeply concave between antennal sockets; clypeus about 0.4 × as high as wide, flat with basal half slightly raised, pubescent, apical margin thin, emarginate; malar space about 0.1 × basal width of mandible; occipital carina complete, meeting hypostomal carina about 0.55 × basal mandible width from base of mandible.    Mesosoma   
 Epomia about half length of basal mandible width; pronotum impunctate and polished laterally, punctate and pubescent along dorsal and posterior margins; mesoscutum densely pubescent, about 1.2 × as long as width at anterior level of tegulae, notaulus present on anterior 0.3 of mesoscutum, extending to level of centre of tegula; scutellum strongly convex, pubescent, lateral carina strong on basal half; mesopleuron with small punctures, pubescent, epicnemial carina strong on lower half, weakly extending to anterior margin of mesopleuron, sternaulus distinctly impressed anteriorly; metapleuron polished, with fine punctures, pubescent dorsally, submetapleural carina with some small carinae attached along its length, posterior part of juxtacoxal carina present; propodeum polished, impunctate dorsally except lateral areas with scattered hairs, anterior transverse carina entirely absent, remaining carinae strong, area superomedia open behind, about 1.6 × as long as apical width, pleural part of posterior transverse carina partly present, propodeal spiracle elongate, about 3.4 × as long as wide. Hind leg with femur 3.1 × as long as wide, length about 0.8 × tibia, basitarsus length 0.3 × tibia, 0.33 × tarsus, 1.9 × second tarsomere, fifth tarsomere longer than third. Fore wing vein Rs & M basad of cu-a, vein 2 rs-m about 0.6 × length of 3 rs-m, hind wing with posterior part of vein M + Cu straight, first abscissa of vein Cu 1 0.4 × as long as vein cu-a.    Metasoma   
Tergites with very small punctures, pubescent, first tergite 1.8 × as long as apical width, median longitudinal carina extending to median distance from spiracle to oblique groove, lateral carina weakly extending to spiracle; second tergite 0.9 × as long as apical width, 0.7 × as long as first tergite, 1.2 × longer than third tergite, basal and apical oblique grooves moderately deep; ovipositor straight, length of ovipositor from tip of hypopygium 1.25 × length of hind tibia, pointed tip, lower valve with eight teeth.   Colour   
Antenna brown; frons with black spots behind antennal sockets, black stripe connecting compound eye to lateral ocellus, hind side of vertex marked with black; pronotum with black mark along posterior margin; mesoscutum with three black stripes joined posteriorly to black mark in front of scutellum; mesopleuron with black mark at groove below subalar prominence connecting to black mark at anterior margin and black mark at ventral half of mesopleural sulcus; propodeum with black marks in lateral areas, area superomedia anteriorly, along posterior, median edge and in second lateral area; fore leg with posterior faces of femur and tibia reddish brown, mid leg with femur with broad posterior and narrow anterior dark stripes, tibia with blackish band dorsally, tarsus blackish, hind leg with anterior and posterior faces of coxa black, dorsal face of coxa with black spot posteriorly, trochantellus and base of femur reddish, anterior and posterior faces of femur with black stripes dorsally and ventrally, apex of femur black dorsally, tibia with basal black band, apical half of tibia with blackish stripe on anterior and posterior faces, tarsus with three first tarsomeres blackish, fourth and fifth tarsomeres reddish; wings hyaline, veins and pterostigma brownish yellow; tergites with black bands basally.  
 Male. Similar to female except mandible with upper tooth slightly broader than lower tooth, antenna varies from 37 to 40 flagellomeres, two of three male specimens with area superomedia weakly closed.    Variation   
Paratype female slightly smaller (body length: 10.2 mm; fore wing 9.7 mm, ovipositor 3.5 mm), mesopleuron with black mark at groove below subalar prominence separated from black mark at anterior margin, along submetapleural carina without small striations, second tergite broader, about 0.7 × as long as apical width. All paratype specimens have the epicnemial carina present on the lower half of the mesopleuron, not extending to the anterior margin, notaulus weaker, extending only to the level of the anterior edge of the tegula, first tergite with median longitudinal carina shorter, extending only to or nearly to level of spiracle, area superomedia less elongate, from 1.4 to 1.5 × as long as wide.   Comparison   
 This species resembles T. nigrivertex Gupta in its elongate area superomedia on the propodeum, the colour patterns of the two species are also similar. The new species differs from T. nigrivertex by its face with dense, coarse punctures; broader first tergite (1.8 × as long as apical width versus 2.5 ×), metasoma with tergites 3 onwards broad, not unusually narrow and slender. The vertex of the new species is not wholly black and with dense, small punctures.    Etymology   
This species is named in honour of Assoc. Prof. Dr Ta Huy Thinh, Senior researcher, vice director of IEBR, for his great support of the studies of the first author.   Distribution   
Currently known only from Chu Yang Sin NP, Dak Lak Province, Central Highlands of Vietnam (Figure 5).   Ecological notes   
The specimens were collected in evergreen forest at elevations of 500–900 m a.s.l.
description: Published as part of Pham, Nhi Thi, Broad, Gavin R. & Wägele, Wolfgang J., 2013, A review of the Theronia genus-group (Hymenoptera: Ichneumonidae: Pimplinae) from Vietnam with descriptions of five new species, pp. 1501-1538 in Journal of Natural History (J. Nat. Hist.) (J. Nat. Hist.) 47 (23 - 24) on pages 1532-1535, DOI: 10.1080/00222933.2012.763105, http://zenodo.org/record/5196883