Netelia (Monomacrodon) bicolor ( Cushman, 1934 )

Konishi, Kazuhiko, Chen, Hsuan-Pu & Pham, Nhi Thi, 2022, A taxonomic review of the genus Netelia, subgenus Monomacrodon (Hymenoptera: Ichneumonidae: Tryphoninae), with description of a new species, Raffles Bulletin of Zoology 70, pp. 376-384 : 378

Netelia (Monomacrodon) bicolor ( Cushman, 1934)

( Figs. 1–11 , 26 )

Monomacrodon bicolor Cushman, 1934: 3 . Holotype: Female CHINA (NMNH).

Netelia (Monomacrodon) bicolor (Cushman) : Townes, 1938: 186; Gauld, 1983: 128.

Material examined. 1 female ( TARI), TAIWAN, Kuandouchi, Ren’ai Township , Nantou County, 9–15 March 1971, Malaise trap, unknown collector ; 1 male ( NMNS ENT 5719-22 ), TAIWAN, Juiyenhsi Station (= Cuifeng), Ren’ai Township , Nantou County, ca. 2200 m alt., 14–15 March 2007, Mercury light, H. H. Liang coll. ; 1 male ( TARI), TAIWAN, Lixing Industry Rd., Ren’ai Township, Nantou Country , N24°4′25.6″ E121°9′31.9″, ca. 1600 m alt., 1–2 October 2016, light trap, Shimizu S. coll. ; 1 male ( IEBR), VIETNAM, Lao Cai Province, Bat Xat Nature Reserve , N22°37′37″ E103°37′32″, 1840 m alt, 28 May 2022, light trap, Pham T.N. & Dang T.H. coll .

Additional description based on Taiwanese and Vietnamese specimens. This species has been described in detail by Gauld (1983). Here we show the ovarian egg morphology of the female specimen from Taiwan and intraspecific variation of wing venation observed in the examined material. Fore wing ( Fig. 10 ) with abscissa of M between 2rs-m and 2mcu varying from slightly shorter to apparently longer than 2rs-m; hind wing ( Fig. 11 ) with NI 0.3–0.5. Ovarian egg 0.4–0.5 mm long, 0.2 mm high, with a stalk on caudal end and with surface smooth on dorsal 2/3 and reticulate on ventral 1/3 ( Fig. 26 ).

Distribution. Previously known from Brunei, Mainland China, India, and Myanmar ( Gauld, 1983; Yu et al., 2012). These are the first records of this species from Taiwan and Vietnam.

Remarks. As described above, the wing venation exhibits wide range variation even in the Taiwanese population. Thus, differences of wing venation seem to not be available for distinguishing species in Monomacrodon .

Figures

Figs. 1–4. Netelia (Monomacrodon) bicolor, male from Taiwan: 1. Habitus in lateral view (scale bar = 1 mm); 2. Aedeagus in lateral view; 3. Paramere in median view; 4. Hind tarsal claws (scale bar = 0.1 mm).

Figs. 5–11. Netelia (Monomacrodon) bicolor, male from Taiwan: 5. Head in frontal view; 6. Head in dorsal view; 7. Head in lateral view; 8. Mesosoma in lateral view; 9. Mesosoma in dorsal view; 10. Fore wing; 11. Hind wing. Scale bars: Figs. 6, 8, 9 = 0.5 mm; Figs. 10, 11 = 1 mm.

Figs.26–27.Ovarianegg in lateralview:26.Netelia (Monomacrodon) bicolor; 27. Netelia (Monomacrodon) maculata new species (scale