Relluna Schoorl, 1990

Yakovlev, Roman V., Müller, Günter C. & Prozorov, Alexey M., 2024, Description of genitalia of the poorly studied genus Relluna Schoorl, 1990 (Lepidoptera, Cossidae, Zeuzerinae), Ecologica Montenegrina 78, pp. 152-158 : 153-155

Genus Relluna Schoorl, 1990

Figs 1−11

Schoorl 1990: 119−120

Type species (by original designation) Azygophleps nurella Swinhoe, 1894

Redescription. Male genitalia ( Figs 8−9 ). Uncus tapered, basal end of medium width, slightly narrowing to apex, apex dome-like, poorly acute; gnathos arms completely reduced; valve long, costal edge slightly curved, abdominal edge strongly curved, outer edge semicircular; juxta robust, tapered (narrow end directed abdominally) with two crescent very long thin lateral processes, length of process equal to 1/2 of valve in length; saccus small, semicircular; phallus robust, approximately equal to valve in length, thick, slightly narrowing to apex, with robust longitudinal folding in distal half, vesica turns inside out along all distal surface of phallus, the lateral surface (on one of the sides) shaped as highly sclerotized belt-like cord with strongly expressed longitudinal folding throughout all surface.

Female genitalia ( Fig. 10 ). Ovipositor of medium length, papillae anales lanceolate, acute, with distinctive transverse oblique cutting; apophyses anteriores slightly shorter than apophyses posteriores; ostium slit-shaped; antrum cup-like, deep, highly sclerotized; ductus relatively short, wide, long thin duct passing from it in medium third, the duct ends with small membranous bulla; bursa big, bag-shaped, with large star-like signum apically; ductus seminalis flows into lateral surface of bursa.

Brief diagnosis. The generic interrelations of the genus Relluna currently can be defined as following: external features (relatively light color) and genital structure (reduced gnathos arms), as well as structural features of the phallus resemble the oriental genus Lakshmia Yakovlev, 2004 (type species, by original designation Lakshmia zolotuhini Yakovlev, 2004 ).

Figures

Figures 1−7. Relluna nurella, adults: 1. R. nurella nurella, Holotype, male (NHMUK); 2. R. nurella nurella, male, Thailand, Changwat Nan, 25 km N Bo Luang, 1150 m, 28.ii.1998 (GMF); 3. R. nurella nurella, female, Nord Vietnam, Ba Be Lake NP, Prov. Cao Bang Phuc, 300 m, leg. Thomas Ihle, 04.2007 (GMF); 4. R. nurella nurella, male, Burma (Myanmar), 25 km E Putao, Nan Sa Bon village, 800 m, 8−9.05.1998, Murzin & Sinjaev leg. (MWM); 5. R. nurella wallacei, Holotype, male (MWM/ZSM); 6. R. nurella wallacei, Paratype, male, Süd- Burma, Tenasserim, 800 m, Khao Yai, 600-1100 m, 12–20.04.1995, Steinke & Lehmann leg. (MWM/ZSM); 7. R. nurella wallacei, Paratype, male, N. Sumatra, 8 km N Sindar Raya, 98º55' E; 3º12' N, 700 m, 23.02.1994, Malicky (MWM).

Figures 8−10. Relluna nurella nurella, genitalia: 8. Male, Holotype (NHMUK, slide Cossid 97); 9. Male, Thailand (GMF, slide Prozorov 2023 0602); 10. Female, Nord-Vietman (GMF, slide Prozorov 2023 0603).

Figure 11. Distribution map of Relluna. Star – R. nurella nurella, circle – R. nurella wallacei. Red star and red circle – type localities.