The genus Aivalykus Nixon, 1938 (Hymenoptera: Braconidae: Doryctinae) with description of a new species from India and Arabian Peninsula Author Ranjith, A. P. Insect Ecology and Ethology Laboratory, Department of Zoology, University of Calicut, Kerala, Pin: 673635, India. Author Belokobylskij, Sergey A. Zoological Institute, Russian Academy of Sciences, St Petersburg 199034, Russia. & Museum and Institute of Zoology, Polish Academy of Sciences, Wilcza 64, Warsaw, Poland. Author Sureshan, P. M. Zoological Survey of India, Western Ghat Regional Centre, Kozhikode, Kerala, Pin: 673006, India. Author Nasser, M. 0000-0002-6460-1839 Insect Ecology and Ethology Laboratory, Department of Zoology, University of Calicut, Kerala, Pin: 673635, India. & drnasher @ gmail. com; https: // orcid. org / 0000 - 0002 - 6460 - 1839 drnasher@gmail.com text Zootaxa 2020 2020-08-05 4822 2 269 276 journal article 8742 10.11646/zootaxa.4822.2.8 9701ad89-9445-42dd-a0f3-7876ff2c35e2 1175-5326 4401547 C8EC3407-5A03-4E8A-A438-AE7D25197DBD Genus Aivalykus Nixon, 1938 Aivalykus Nixon, 1938: 152 . Ecphyloides Marsh, 1993: 14 ( type species Ecphyloides flavus Marsh, 1993 ). Type species: Aivalykus eclectes Nixon, 1938 . Diagnosis . Head subcubical or weakly transverse (dorsal view); ocellar triangle with base larger than its sides; frons more or less flat and without median keel; eyes always glabrous; occipital carina present and not fused below with hypostomal carina; postgenal bridge narrow; maxillary palps 5-segmented; labial palps 3-segmented; scape wide and rather short without apical lobe; vertex often transversely striate, rarely smooth or very finely aciculate; anterior surface of mesonotum subvertical, distinctly elevated above pronotum; notauli more or less distinct anteriorly, shallow or rarely absent in posterior half; sternaulus shallow, long and straight; prepectal carina distinct and complete; propodeum with or without areas delineated by carinae; lateral tubercles and propodeal bridge absent; fore tibia with small spines arranged in almost single row; hind coxa small, without basoventral tooth-like projection and corner; all femora without distinct dorsal protuberances; fore wing radial (marginal) cell not or only slightly shortened; fore wing without second radiomedial vein (r-m); recurrent vein (m-cu) antefurcal or postfurcal; nervulus (cu-a) always present, short, postfurcal; parallel vein (CU1a) interstitial; brachial (first subdiscal) cell closed apically and often before recurrent (1m-cu) vein; hind wing without nervellus (cu-a); submedial (subbasal) cell absent; first recurrent vein (m-cu) absent; medial (basal) cell narrow and always closed antero-posteriorly; first metasomal tergite usually rather wide, with distinct dorsope; acrosternite of first segment short, about 0.2 × as long as first tergite; second metasomal suture shallow and straight or weakly curved, sometimes absent; second tergite without furrows or delineated area; ovipositor long. Distribution . Australasian, Afrotropical, Nearctic, Neotropical and Oriental regions. Hosts . Sphaerotrypes Blandford, 1894 , Phthorophloeus Rey, 1883 , Phloeosinus Chapuis, 1873 ( Coleoptera : Curculionidae , Scolytinae ) ( Yu et al . 2016 ).