Allophrys davichia Khalaim, 2018

Khalaim, Andrey I., 2018, The genera Allophrys Förster and Aneuclis Förster (Hymenoptera: Ichneumonidae: Tersilochinae) of Vietnam, Zootaxa 4378 (3), pp. 414-428 : 417-418

Allophrys davichia Khalaim , sp. nov.

( Figs 4–10 )

Comparison. Allophrys davichia most easily differs from all its Vietnamese congeners by its very slender antennal flagellum ( Fig. 6 ), fore wing with second recurrent vein (2 m-cu) antefurcal ( Fig. 9 ) and hind wing with nervellus (cu 1& cu-a) weakly reclivous. The new species resembles A. daklaka as only these two species possess pterostigma in the form of an equilateral triangle ( Fig. 6 ) and deep foveate groove with coarse transverse wrinkles on mesopleuron ( Fig. 8 ), but differs from the latter species by characters given above and in the key.

Description. Female. Body length 4.4 mm. Fore wing length almost 2.9 mm.

Head strongly tapered, weakly rounded behind eyes in dorsal view; temple 0.5× as long as eye width. Clypeus 3.0× as broad as long, lenticular, slightly truncated ventrally ( Fig. 4 ), straight in lateral view, separated from face by weak furrow, smooth, with distinct punctures in upper 0.7. Mandible slender, with upper tooth almost 3.0× longer than lower tooth ( Fig. 8 ). Malar space 0.9× as long as basal mandibular width. Antennal flagellum slender, slightly tapered towards apex, with 14 flagellomeres ( Fig. 6 ); second and third flagellomeres 2.0–2.2×, subapical flagellomeres 1.6–1.8× as long as broad. Face finely and densely punctate on granulate background, dull. Frons shallowly granulate, with very fine and moderately dense punctures, dull. Vertex shallowly granulate, finely punctate, dull or weakly shining. Temple smooth, weakly shining, with sparse, very fine, inconspicuous punctures. Occipital carina complete laterally and absent dorsally. Hypostomal carina strong, complete ( Fig. 5 ).

Mesoscutum very finely punctate, finely granulate and dull anteriorly, very shallowly granulate and weakly shining laterally and posteriorly. Scutellum with lateral longitudinal carinae present in its extreme base. Notaulus with strong wrinkle. Foveate groove extending in anterior 0.6 of mesopleuron, very strongly oblique, very deep and broad, with strong transverse wrinkles ( Fig. 8 ). Mesopleuron very finely granulate and dull peripherally, with fine punctures on almost smooth and weakly shining background centrally (above foveate groove). Propodeum mediodorsally with moderately broad furrow (basal longitudinal carinae absent) ( Fig. 7 ); basal part 0.55× as long as apical area; dorsolateral area very shallowly granulate, weakly shining, with weak, inconspicuous punctures. Propodeal spiracle small, separated from pleural carina by almost 4.0× diameter of spiracle. Apical area flat, rounded anteriorly ( Fig. 7 ); apical longitudinal carinae strong, reaching transverse carina anteriorly.

Fore wing with second recurrent vein (2 m-cu) antefurcal, weakly pigmented in anterior 0.3 ( Fig. 9 ). Pterostigma broad, in the form of almost equilateral triangle ( Fig. 6 ). Intercubitus (2 rs-m) thick and short. First abscissa of radius (Rs +2 r) slightly arcuate, shorter than width of pterostigma. First and second sections of radius (Rs +2 r and Rs ) meeting at angle 80–85° ( Fig. 9 ). Metacarpus (R 1) reaching tip of the wing ( Fig. 9 ). Second abscissa of postnervulus present. Hind wing with nervellus (cu 1& cu-a) weakly reclivous, slanted about 70° from horizontal. Legs slender.

First tergite very slender, 5.0× as long as posteriorly broad, round in cross-section, polished, its upper margin in dorsal view more or less evenly arcuate ( Fig. 10 ). Second tergite twice as long as anteriorly broad. Thyridial depression almost 3.0× as long as broad. Ovipositor short and slender, weakly and evenly upcurved, with small dorsal subapical notch; sheath about 0.75× as long as first tergite.

Head and mesosoma dark reddish brown. Palpi and mandible yellow, mandibular teeth dark red. Clypeus brownish yellow in its lower 0.4. Scape and pedicel of antenna yellow, flagellum yellow basally to dark brown apically. Tegula brown. Pterostigma dark brown. Wings very weakly infumate with brown. Legs yellow. Metasomal tergites 1–3 brown, following tergites brown dorsally and ventrally, yellow laterally and posteriorly.

Male. Unknown.

Etymology. The species is named after the South Korean pop ballad duo Davichi, consisting of vocalists Lee Hae-ri and Kang Min-kyung, with my sincere thanks for their beautiful songs. The name “Davichi” is derived from the Korean for “shining over everything”.

Material examined. Holotype female ( RMNH) Central Vietnam, Ha Tinh [Hà Tĩnh] Prov., Vu Quang National Park, N 18°17ʹ45ʺ, E 105°25ʹ51ʺ, 104 m, Malaise trap 19, 24.IX –5.X.2009, coll. C. v. Achterberg & R. de Vries.

Distribution. Oriental species: Central Vietnam.

Figures

FIGURES 1–7. Allophrys daklaka sp. nov., holotype ♀: 1—body, lateral; 2—head with antenna, lateral; 3—propodeum, dorso-posto-lateral. Allophrys davichia sp. nov., holotype ♀: 4—head, front; 5—head, ventro-postero-lateral; 6—antenna and pterostigma; 7—propodeum, dorsolateral.

FIGURES 8–13. Allophrys davichia sp. nov., holotype ♀: 8—head and mesosoma, lateral; 9—apex of fore wing; 10— metasoma with ovipositor, lateral. Allophrys occipitata, ♀: 11—head and mesoscutum, dorsolateral; 12—fore wing and antenna; 13—mesopleuron, ventro-postero-lateral.