Paracossus korshunovi, Yakovlev, 2022

Yakovlev, Roman V., 2022, Review of the genus Paracossus Hampson, 1904 (Lepidoptera: Cossidae, Cossinae) with description of one new species from Thailand, Ecologica Montenegrina 54, pp. 18-25 : 19-21

Paracossus korshunovi sp. n.

http://zoobank.org/ urn:lsid:zoobank.org:act:51DB13F2-8F3F-4BC5-BA23-5A04D5CA35FF

Figs 1−3 , 13−15

Material. Holotype (male), Thailand, Nachon Ratchasima Province , Nong Bun Mak District, near Nong Bunnak village, N 14º40′51.8′′, E 102º27′08.3′′, leaf- falling gallery forest, 9−25.iii.2020, leg. A. Korshunov ( ZISP). 28 males, 11 females (paratypes), same locality and data ( RYB, AKK, ZISP)

Description. Male ( Figs 1−2 ). Length of fore wing 9−12 mm. Antenna simple, without setae. Thorax and abdomen light-grey. Fore wing light-grey with special reticulated pattern, round black spot at top of discal cell, thin black band submarginally. Hind wing light-grey with poorly expressed reticulated pattern.

Male genitalia ( Fig. 13 ). Uncus wide, relatively short, with semicircular bifurcation; gnathos arms thick, short; gnathos very robust, covered with tiny spikes; valve with narrow apically membranous tip, robust crest with poorly expressed ribs on inner surface of valve on costal margin; transtilla process thin, slightly narrowing to apex, acute, poorly curved; juxta robust, with semicircular notch on dorsal surface; saccus robust, semicircular; phallus slightly shorter than valve, with apical spade-like extension, vesica without cornuti.

Female ( Fig. 3 ). Bigger than male, length of fore wing 13−16 mm, antenna not pectinate, dark elements of pattern significantly extended.

Female genitalia ( Fig. 14 ). Ovipositor long; papillae anales semicircular, with transverse oblique notching; anterior apophyses twice shorter than posterior ones; ostium aperture slit-like. Ductus and bursa absent on preparation.

Diagnosis. The new species differs from all the known species of the genus in the relatively small size, simple antenna, the very narrow apical portion of the valve and the acute tips of the uncus.

Distribution. Central Thailand.

Etymology. The new species is named after the prominent Russian entomologist Alexey Korshunov (Kemerovo, Russia), who has collected this species new to science.

Figures

Figures 1−10. Adult specimens of Paracossus: 1. P. korshunovi sp. n., male, holotype (ZISP); 2. P. korshunovi sp. n., male, paratype (RYB); 3. P. korshunovi sp. n., female, paratype (RYB); 4. P. furcata Hampson, 1904, female, holotype (NHMUK); 5. P. griseatus Yakovlev, 2009, male, holotype (MWM); 6. P. hainanicus Yakovlev, 2009, male, holotype (MWM); 7. P. indradit Yakovlev, 2009, male, holotype (MWM); 8. P. indradit Yakovlev, 2009, male, Laos (MWM); 9. P. longispinalis (Chou & Hua, 1988), male, holotype (NWAU); 10. P. parva Hampson, 1904, male, holotype (NHMUK).

Figures 13−14. Genitalia of Paracossus: 13. P. korshunovi sp. n., male, holotype (ZISP); 14. P. korshunovi sp. n., female, paratype (RYB).

Figure 15. Distributional map of Genus Paracossus.