Stueningeria ihlei, 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 : 24-25

Stueningeria ihlei sp. nov.

https://zoobank.org/ urn:lsid:zoobank.org:act:351A567A-A75E-42A2-ABD6-6D2157EEABE4

Figs 11 , 21 , 30

Material examined. Holotype. Male, Vietnam (C.), Prov. Thua-Thien-Hue, Kreis A Luoi, Gemeinde A Rong, Passastrasse ca. 30 km S A Luoi, Naturschutzgebiet / Regenwald, N 16º06.425′; E 107º26.338′, 01−02.iv. 2009, 750 m, leg. Swen Löffler, Thomas Ihle & Hoa Binh Nguyen , coll. S. Löffler ( ZISP, slyde RYB 2017 /5) . Paratypes. 1 male, Central Vietnam, Gia Lai Prov., Kon Ka Kinh NP, general office, 820 m, 14°11.32′N / 108°18′E, 12−13.iii.2012, leg. V. Zolotuhin ( MWM, GenPr- Heterocera MWM – 28.012) ; 2 males, Sued-Vietnam, Bao Loc, Rung Cat Tien , 1500 m, 11°32’N 107°48’E, 10−20.xii.1992, leg. Sinajev & Simonov (GenPr MWM: 28.021) .

Description. Male. Length of fore wing 13 mm. Antenna short, bipectinate, setae in medium third of antenna twice longer than antenna rod diameter, thorax and abdomen from above covered with long brown scales (except for medium third of abdomen 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; wide creamy lines between spots; oblique band submarginally, expressed from R 2 to CuA 2, consisting of semicircular brown spots; in discal cell bright black stroke cut with thin transverse creamy lines; cubitally (from base to tornal angle) long narrow crescent portion of grey androconium scales; two wide short portions of grey androconium scales between veins of radial trunk; marginal area and fringe mottled (with alternating brown and creamy spots). Hind wing light-brown with poorly expressed reticulated dark-brown pattern, anal angle light-grey without pattern, marginal area and fringe mottled (with alternating brown and creamy spots).

Male genitalia ( Fig. 21 ). Uncus wide, with extended semicircular bifurcation apically, apical halves of uncus diverging at a right angle, wide, short, apices of uncus halves almost smooth; scaphium and subscaphium fused into long extended spindle-like tube; gnathos arms short, lamellar; gnathos lamellar with long thin lateral processes; valve short with equally rounded edges; saccular edge (in basal half) strongly sclerotized, tubulate, with very short pyramidal harpe directed dorsally; juxta lamellar, robust; saccus practically reduced; phallus 2.5 times shorter than valve, thick, in distal third with robust spiky cornutus directed at a right angle towards phallus axis.

Female unknown.

Diagnosis. The new species is close to S. ihlei sp. nov. and S. pinratanai sp. nov., from which it differs in the very mottled pattern and the very small harpe on the saccular edge of the valve. From S. loeffeleri the new species differs in the absence of serrations on the phallus.

Distribution. Vietnam (Thua-Thien-Hue Province).

Etymology. The new species is named after the entomologist Thomas Ihle – the collector of the new species.

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 20−23. Male genitalia of Stueningeria: 20. S. loeffleri, holotype (GenPr MWM: 32.908); 21. S. ihlei, holotype (slyde RYB 2017/5); 22. S. murzini, holotype (GenPr MWM: 28.018); 23. S. pinratanai, holotype (GenPr MWM: 32.906).

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.