Antrocephalus hakonensis (Ashmead, 1904)

Binoy, C., Nivetha, S. & Arulprakash, R., 2024, Chalcidid parasitoids (Hymenoptera: Chalcididae) of Opisina arenosella (Walker) (Lepidoptera: Xyloryctidae) on coconut palm in southern India, Zootaxa 5537 (4), pp. 493-510 : 497

Antrocephalus hakonensis (Ashmead, 1904)

( Figs 11–18 )

Material examined. Karnataka: 6♀, 1♂ Coorg dt., Thalakavery , 27.xii.2019, Coll. C. Binoy. Kerala: 11♀, 4♂ Kozhikode dt., Elathur , Balussery, Pantheerankavu, 2018–2022, Coll. C. Binoy ; Tamil Nadu: All Coll. S. Nivetha, 5♀, 8♂ Erode dt., Avalpoondurai, 01.xii.2023 ; 4♀, 10♂ Karur dt., Pugalur, 13.xii.2023 ; 3♀, 6♂ Tiruppur dt., Nathakadayur, 25.i.2024 .

Diagnosis. Black; head in frontal view distinctly wider (1.3× excluding mandibles) than high ( Fig. 13 ); preorbital carinae joining with auricular carina and meeting with genal carina in the middle ( Fig. 13 , arrow); mesosoma sparsely punctate with small punctures, the interspaces smooth; scutellum distinctly longer than maximum width, and with conspicuous medio-longitudinal furrow ( Fig. 14 , arrow); axillae and sides of mesoscutum with tufts of silvery-white setae ( Fig. 14 ); metacoxa with dorsobasal tubercle; metafemur with inner basal tooth ( Fig. 17 , arrow). Female metasoma acuminate apically ( Fig. 15 ); male metasoma subglobose ( Fig. 18 ).

Note. The specimens from Kerala have brown-black hind legs compared to entirely black specimens from Karnataka and Tamil Nadu.

Figures

FIGURES 11–18. Antrocephalus hakonensis (Ashmead, 1904). 11–17, female: 11, habitus, lateral view; 12, habitus, dorsal view; 13, head, frontal view (arrow points to preorbital carina meeting auricular carina); 17, mesosoma, dorsal view, arrow points to medial longitudinal groove; 15, metasoma, dorsal view; 16, hind leg, outer view; 17, hind leg, inner view, arrow points to inner basal tooth. 18, male, habitus, lateral view.