Xyleutes, Hubner, 1820

Yakovlev, Roman V., Sankararaman, Hariharakrishnan, Balaji, Rajasekaran Krishna & Balakrishnan, Valappil, 2021, A world catalogue of Xyleutes Hübner, 1820 (Lepidoptera: Cossidae: Zeuzerinae) with description of a new species from the Western Ghats of India, Zootaxa 5040 (4), pp. 565-574 : 566

Key to the world species of Xyleutes

(based on the external features, the males genitalia of species in this genus differ very little)

1. Thorax from above partially or completely covered with floury-white scales ( Figs 1A–B , 2A, D–F ).................... 2

- Thorax from above completely covered with black scales ( Fig. 1C ).......................... X. strix ( Linnaeus, 1758)

2. Thorax from above completely covered floury-white scales ( Figs. 1A–B )......................................... 3

- Tegulae and patagia floury-white, thorax brown from above ( Figs 2A, D–F )................................................................................................ X. ramamurthyi Yakovlev & Sankararaman , sp. nov.

3. White pattern on fore wing developed along hind margin and at the apex ( Fig. 1B )........ X. personus ( Le Guillou, 1841)

- White pattern on fore wing developed along hind margin, discally and throughout marginal area ( Fig. 1A )............................................................................................... X. keyensis Strand, 1919

Figures

FIGURE 1. Habitus of Xyleutes (males).A. X. keyensis Strand, 1919, Indonesia, Western Timor, Buraenenv., 60 km SE Kupang, 350 m a.s.l., 10–27 Feb. 2006, leg. Jakl (MWM). B. X. personus (Le Guillou, 1841), Nepal, Annapurna Himal, Valley of Kali Gandaki, near Tatopani, 28º29′ N, 83º39′ E, 1100 m a.s.l., 22 July 1995, leg. Gy.M. László and G. Ronkay (MWM). C. X. strix (Linnaeus, 1758), Nordborneo, Trus Madi, 9–14 April 2006, 1150 m a.s.l., leg. Martini (MWM).

FIGURE 2. Xyleutes ramamurthyi Yakovlev & Sankararaman, sp. nov. male holotype: A. Habitus, dorsal view. B. Male genitalia (frontal projection). C. Phallus (lateral projection). D–F. Males in the nature (photos by Balakrishnan Valappil). D. from Aralam wildlife sanctuary, Kerala. E. from Aralam wildlife sanctuary, Kerala. F. from T.K. Colony, Kerala. G–H. Habitat. G. T.K. Colony, Malappuram, Kerala (photo by Jishad). H. Aralam wildlife sanctuary, Kannur, Kerala (photo by Balakrishnan Valappil).