Chalcidid parasitoids (Hymenoptera: Chalcididae) of Opisina arenosella (Walker) (Lepidoptera: Xyloryctidae) on coconut palm in southern India Author Binoy, C. Independent researcher, Sreeragam, Chereekandy, Elathur, Kozhikode Kerala- 673303, India. Author Nivetha, S. 0009-0002-4102-911X sekarnivi25112000@gmail.com Author Arulprakash, R. 0009-0002-4102-911X sekarnivi25112000@gmail.com text Zootaxa 2024 2024-11-12 5537 4 493 510 http://dx.doi.org/10.11646/zootaxa.5537.4.3 journal article 10.11646/zootaxa.5537.4.3 1175-5326 14240326 26BA78B1-2B0D-4560-A393-1DC1C8E5342E Antrocephalus phaeospilus Waterston, 1922 ( Figs 23–26 ) Material examined (all collected by C. Binoy). Karnataka : 6♂ Coorg dt., near Chiklihole dam site, 12.xii.2019 ; 1♂ Madapura river site, 04.iv.2019 ; 1♀ Shimoga dt., Hossagadai, 19.xii.2019 . Kerala : 3♂ Kasargod dt., on short palm near vegetable field, Periya , 29.ix.2018 . Tamil Nadu : 1♂ Coimbatore dt., Kurangumudi , Valparai , 01.iii.2019 . Diagnosis. Body black with tegula, legs (except procoxa) yellowish to reddish-brown; scrobe reaching median ocellus; fore wing hyaline with brown infuscate spot below mv; mesosoma with dense umbilicate pits, with interstices rugose-punctate ( Fig. 24 ); scutellum apically bilobed; metafemur unusually thick, ventrally with long comb of teeth ( Fig. 25 ); metasoma laterally setose ( Fig.26 ); Gt 1 with two short carina and a basal fovea, dorsum shiny ( Fig. 26 ). Female metasoma acuminate apically, longer than mesosoma; male metasoma distinctly shorter than mesosoma ( Fig. 23 ). Note . This represents the first host record from Opisina for A. phaeospilus .