Closterocerus, Westwood, 1833

Jamali, Mohd Majid & Zeya, Shahid Bin, 2021, Review of Indian Closterocerus (Hymenoptera: Chalcidoidea: Eulophidae), with description of two new species, Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 61 (1), pp. 231-241 : 232

Key to Indian species of Closterocerus (females)

1 Scape slender, at least 5× as long as broad ( Fig. 2B ). .. 2

– Scape strongly compressed or flattened, at most 2.7× as long as broad ( Figs 6B , 8B ). ..................................... 3

2 Fore wing with brown infuscate patch below stigmal vein, with row of setae radiating from stigmal knob ( Fig. 1B ); middle lobe of mesoscutum with one pair of setae ( Fig. 2E ). ............ C. longiscapus ( Bouček, 1986)

– Fore wing hyaline, with two rows of setae radiating from stigmal knob ( Fig. 3B ); midlobe of mesoscutum with two pairs of setae ( Fig. 4C ). .................................... ................................ C. pulcherrimus ( Kerrich, 1970)

3 Body length at least 2 mm; fore wing with middle band becoming broadened posteriorly ( NARAYANAN et al. 1960: fig.1). .............................................................. ............................ C. agromyzae Narayanan et al., 1960

– Body length at most 1.35 mm; fore wing with middle band slightly broadened in middle or nearly uniform in width ( Figs 5B , 7B ). .................................................. 4

4 Fore wing with speculum opened and, with middle band slightly broadened medially ( MANI 1971: fig.12). ................................ C. phytomyzae Mani, 1971

– Fore wing with speculum closed ( Figs. 5B , 9B ), with middle band nearly uniform in width. ....................... 5

5 Clava with C2 relatively more transverse, at least 2× as broad as long; hind wing relatively broad, at most 3.75× as long as broad. .... C. insignis Waterston, 1915

– Clava with C2 relatively less transverse, at most 1.5× as broad as long; hind wing relatively narrow, at least 4.6× as long as broad. .................................................... 6

6 Middle lobe of mesoscutum with 3 pairs of setae ( Fig. 6D ); hind wing 4.6–5.06× as long as broad. ................. ................................... C. scapiatus Singh & Khan, 1996

– Middle lobe of mesoscutum with 1 pair of setae; hind wing more than 6× as long as broad. .......................... 7

7 Clava 3.6× as long as broad; mesoscutum with polygonal reticulate sculpture, and with relatively larger cells ( Fig. 8C ); fore wing with proximal patch relatively broad and darker ( Fig. 7B ). ............................................. ................................................. C. pakyongensis sp. nov.

– Clava 1.7× as long as broad; mesoscutum with polygonal reticulate sculpture, and with relatively smaller cells, becoming faint posteriorly ( Fig. 10C ); fore wing with proximal patch relatively narrow and faint ( Fig. 9B ). .................................................... C. junubi sp. nov.

Figures

Fig. 2. Closterocerus longiscapus (Bouček, 1986). A–C – female: A – head,frontal view; B – antenna; C – ovipositor.D–E – male:D – antenna; E – mesosoma.

Fig. 6. Closterocerus scapiatus Singh & Khan, 1996, female: A – head, frontal view; B – antenna; C – mesosoma; D – mesoscutum, with 6 setae on mid lobe; E – metasoma.

Fig. 8. Closterocerus pakyongensis sp. nov., A–D – female (holotype): A – head, frontal view; B – antenna; C – mesosoma; D – metasoma. E – male (paratype), genitalia.

Fig. 1. Closterocerus longiscapus (Bouček, 1986). A – male, habitus; B–C – female: B – fore wing; C – hind wing.

Fig. 3. Closterocerus pulcherrimus (Kerrich, 1970), female:A – habitus; B – fore wing; C – hind wing.

Fig. 4. Closterocerus pulcherrimus (Kerrich, 1970). A–D – female: A – head, frontal view; B – antenna; C – mesosoma; D – metasoma. E–F – male: E – antenna; F– genitalia.

Fig.5. Closterocerus scapiatus Singh & Khan, 1996, female:A – habitus; B – fore wing; C – hind wing.

Fig. 7. Closterocerus pakyongensis sp. nov. A–C – female (holotype): A – habitus; B – fore wing; C – hind wing. D – male (paratype), habitus.

Fig. 9. Closterocerus junubi sp. nov. female (holotype): A – habitus; B – fore wing; C – hind wing.

Fig. 10. Closterocerus junubi sp.nov.female (holotype):A – head,frontal view; B – antenna; C – mesosoma; D – metasoma.