First record of the genus Acrodactyla Haliday (Hymenoptera: Ichneumonidae: Pimplinae) from Vietnam, with descriptions of six new species Author Pham, Nhi Thi Author Broad, Gavin R. Author Matsumoto, Rikio Author Böhme, Wolfgang text Zootaxa 2012 3207 40 53 journal article 45350 10.5281/zenodo.210988 e0c02d22-8f7e-4893-82bf-3d2ed3b48c4d 1175-5326 210988 Acrodactyla maiphuquyi Pham, Broad, Matsumoto & Böhme , sp. nov. ( Figs 1 d, 2c, 3f, 4b, 5d, 6c, 7b) Diagnosis. Mesoscutum with few hairs along lateral side of median lobe and on posteromedian part of lateral lobes; propodeum with posterior transverse carina strong, thickened medially, lateromedian longitudinal carinae entirely absent, petiolar area divided into two areas by longitudinal carina; hind wing with second abscissa of vein Cu 1 faintly present; hind femur long and thin, 8x as long as wide; ovipositor 0.63x hind tibia. Description ( Holotype female). Body length 6.2 mm , fore wing 4.2 mm , ovipositor 1.2 mm . Head . Antenna with 21 flagellomeres, first flagellomere 1.5x length of second; diameter of lateral ocellus equal to ocellar-ocular distance; frons impunctate, polished; inner margins of eyes weakly concave above antennal sockets, parallel ventrally; face 1.1x as high as wide, pubescent; clypeus convex, about 0.67x as high as wide, separated from face by impressed clypeofacial suture, apical margin round; malar space 0.8x basal width of mandible; mandible upper tooth weakly longer than lower tooth; palpi formula 5:3; occipital carina complete, meeting hypostomal carina about 1.25x basal mandible width from base of mandible, forming flange ventrally after meeting hypostomal carina. Mesosoma . Pronotum polished with scattered hairs; mesoscutum pubescent posteriorly, 1.4x as long as wide at anterior level of tegulae; scutellum strongly convex, pubescent, lateral carina present at base; mesopleuron densely setose except concave area near mesopleural suture bare and polished, epicnemial carina present on lower half of mesopleuron; metapleuron pubescent dorsally, bare ventrally, submetapleural carina complete, forming small lobe anteriorly; propodeum moderately convex, dorsally almost bare, posterior transverse carina strong, thickened medially, apical 0.6 of lateral longitudinal carina present, petiolar area divided into two areas by longitudinal carina, pleural area pubescent. Legs long and thin, fore and mid femora without teeth ventrally; fore femur 7.8x longer than wide; hind leg with femur 8x as long as wide, length 0.8x tibia, tibia 12.7x as long as apical width; basitarsus 0.3x tibia, 0.35x tarsus, 1.5x second tarsomere, fifth tarsomere swollen, as long as third. Fore wing with vein Rs&M opposite cu-a , vein cu-a inclivous, 2 rs-m about 0.67x distance between 2 rs-m and 2 m-cu , vein Cu 1 a separated from 1 m-cu by length of vein Cu 1 b ; hind wing with vein M+Cu strongly curved, first abscissa of vein Cu 1 1.5x as long as vein cu-a , second abscissa of vein Cu 1 faintly present. Metasoma . Tergites polished, with short hairs; first tergite 2.3x as long as apical width, dorsolateral carina complete, median longitudinal carina extending over oblique groove; second tergite 0.8x length of first tergite, as long as apical width, basal and apical oblique grooves deep, rhombic area convex; third tergite shorter than second, basal and apical oblique grooves moderately deep; first sternite evenly convex, extending beyond level of spiracle, with longitudinal ridges; ovipositor straight, weakly up-curved at tip, length from tip of hypopygium 0.63x as long as hind tibia. Colour . Black. Antenna brown, except scape and pedicel yellow ventrally; mandible, palpi, posterior corner of pronotum, tegula, fore and mid legs yellow; hind leg yellow, except femur with two lateral brown stripes, tibia with subbasal and apical fuscous bands, tarsus blackish; wings hyaline, pterostigma and veins brownish yellow; tergites brown to blackish brown; ovipositor brown. Male. Unknown. Comparison. This species belongs to the degener group ( Townes & Townes 1960 ). It differs from its congeners by the presence of a longitudinal carina dividing the petiolar area of propodeum. Moreover this species is characterized by the posterior transverse carina strong and thickened medially. Etymology. This species is named after Assoc. Prof. Dr Mai Phu Quy, Institute of Ecology and Biological Resources, Hanoi, Vietnam , who collected the only known specimen. Distribution. Currently known only from Hoang Lien NP, Fansipan Mountain, Lao Cai Province, North Vietnam ( Fig. 8 ). Ecological notes. The single specimen was collected in mountain evergreen forest at 2,320 m a.s.l. Material examined. Holotype : Ƥ ( RMNH ), Lao Cai, Hoang Lien NP, Fansipan Montane, 2320 m a.s.l, 24.iv– 02.v.2000 , Malaise trap, Q. P. Mai & T. M. Nguyen leg.