Stueningeria csovarii, Yakovlev & Zolotuhin, 2021

Yakovlev, Roman V. & Zolotuhin, Vadim V., 2021, Revision of the family Metarbelidae (Lepidoptera) of the Oriental Region. III. Genus Stueningeria Lehmann, 2019, Ecologica Montenegrina 43, pp. 16-29 : 21-23

Stueningeria csovarii sp. nov.

https://zoobank.org/ urn:lsid:zoobank.org:act:DE0C3CBF-2947-4B87-A7F8-BE88565B4049

Figs 8−9 , 19 , 25 , 29

Material examined. Holotype. Male , Thailand, Changwat Nan, 15 km N of Bo Luang, 1000 m, 7.iv.1998, leg. Tibor Csovari & Pal Steger ( MWM, GenPr-Heterocera MWM – 28.020) . Paratypes: 1 male, 1 female, same locality ( MWM, GenPr-Heterocera MWM – 32.907) .

Description. Length of fore wing 14 mm. Antenna short, bipectinate, setae in antenna medium third twice longer than antenna rod diameter, thorax and abdomen covered with long brown scales (except for medium third of abdomen which is covered with light-grey scales, abdomen apically with long modified scales. Fore wing very mottled, bright, with bright brown spots of various shape and size throughout all wing area, thin creamy lines between spots; oblique band submarginally expressed from R 2 to CuA 2; long narrow crescent spot of grey androconium scales cubitally (from base to tornal angle), two short thin portions of grey androconium scales between radial trunk veins; marginal area and fringe mottled (with alternating brown and creamy spots). Hind wing light-brown with poorly expressed blurred dark-brown pattern, anal edge creamy, without pattern, marginal area and fringe mottled (with alternating brown and creamy spots).

Male genitalia ( Fig. 19 ). Uncus with deep semicircular bifurcation, uncus halves slightly extended apically, relatively long; scaphium and subscaphium fused into wide short spindle-like tube; gnathos arms short, lamellar; gnathos lamellar with long thin lateral processes; valve short with semicircular costal edge, slightly curved saccular and outer edges; saccular edge (in basal half) strongly sclerotized, tubulate, distally sharply cut, short, with pyramidal twin-peaked harpe directed dorsally; juxta lamellar, robust; saccus almost reduced; phallus twice shorter than valve, poorly curved in medium third, relatively thin, with small spiky cornutus in distal third.

Female ( Fig. 9 ). Length of fore wing 12 mm. Antenna short, bipectinate, setae in medium third of antenna 1.5 times longer than antenna rod diameter, thorax and abdomen from above covered with light-grey scales, abdomen apically with long modified brown scales. Fore wing creamy with poorly expressed brown pattern of small spots along costal edge and submarginally, big brown spot in discal cell, slight sputtering of brown scales throughout all wing area. Hind wing light-brown with poorly expressed dim dark-brown pattern, anal angle creamy without pattern. Fringe on all wings mottled, light between veins, dark at veins.

Female genitalia ( Fig. 25 ). Ovipositor very short, papillae anales semicircular, anterior apophyses almost equal to posterior apophyses in length, short, antrum strongly sclerotized, elongated, funnel-like; ductus wide, smoothly passing into small bursa copulatrix without signa.

Diagnosis. Externally, the new species is similar to S. ihlei sp. nov. and S. pinratanai sp. nov., from which it differs in very narrow androconium portions in the radial area of the fore wing, in the long distal halves of the uncus and in the twin-peaked harpe on the saccular edge of the valve. From S. loeffeleri the new species differs in the absence of small serrations on the phallus.

Distribution. Thailand (Nan Province).

Etymology. The new species is named after the entomologist Tibor Csovari – the new species collector.

Figures

Figures 1−15. Adult specimens of Stueningeria: 1. S. nepalensis, male, Nepal, Annapura Himal (MWM); 2. S. nepalensis, male, Nepal, Annapura Himal (MWM); 3. S. nepalensis, male, India, Kumaon-Himalaya (MWM); 4. S. campbelli, female, holotype (NHMUK); 5. S. phaga, female, holotype (NHMUK); 6. S. phaga, male, India, Assam (NHMUK, individual number NHMUK: 012832501); 7. S. htetae, male, holotype (MWM); 8. S. csovarii, male, holotype (MWM); 9. S. csovarii, female, paratype (MWM); 10. S. loeffleri, male, holotype (MWM); 11. S. ihlei, male, holotype (ZISP); 12. S. murzini, male, holotype (MWM); 13. S. murzini, female, paratype (MWM); 14. S. pinratanai, male, holotype (MWM); 15. S. pinratanai, female, paratype (MWM).

Figures 16−19. Male genitalia of Stueningeria: 16. S. nepalensis, India, Kumaon-Himalaya GenPr MWM: 32.909; 17. S. phaga, India, Assam (slide NHMUK: 010315532); 18. S. htetae, holotype (GenPr MWM: 28.019); 19. S. csovarii, holotype (GenPr MWM: 28.020).

Figures 24−26. Female genitalia of Stueningeria: 24. S. campbelli, holotype (slide NHMUK: Coss-260♀); 25. S. csovarii, paratype (GenPr MWM: 32.907); 26. 23. S. pinratanai, paratype (GenPr MWM: 32.905).

Figures 27−32. Forewings of males of Stueningeria: 27. S. nepalensis, India; 28. S. htetae, holotype; 29. S. csovarii, holotype; 30. S. ihlei, holotype; 31. S. murzini, holotype; 32. S. pinratanai, holotype.