Stueningeria phaga ( Swinhoe, 1894 ) 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 : 18-19

Stueningeria phaga ( Swinhoe, 1894) comb. nov.

Figs 5−6 , 17

Arbela phaga Swinhoe, 1894 , Ann. Mag. Nat. Hist. 6 (14): 440.

Type locality: Cherra Punji.

Type material: holotype (female) in NHMUK, examined.

Material examined. Holotype (female) Khasi Hills, Cherra Punji ( NHMUK); 1 male, India [Assam], Cachar , Silchar , Kanny-Koory , 12.iv.1907, C.B. Antram, “Moths of Bark eating borer caterpillar on Mango, Siris [ Albizia lebbeck (L.) Benth. ( Fabaceae )] and other trees. Bred from mango tree” ( NHMUK, individual number NHMUK: 012832501; slide NHMUK: 010315532).

Redescription. Male. Length of fore wing 13 mm. In cubital area of fore wing, from base to middle of wing, portion with long white androconium scales. Brown reticulated pattern on fore wing, with more contrasting dark-brown spots on light-brown background, expressed band of separate dark-brown spots postdiscally (from distal third of costal edge to medium third of rear edge). Hind wing light- brown, without pattern. Fringe on all wings mottled, light between veins, brown at veins.

Male genitalia ( Fig. 17 ). Uncus wide, with extended semicircular bifurcation apically, apical halves of uncus diverging at a right angle, wide, shirt, apices of uncus halves smooth; scaphium and subscaphium fused into long spindle-like tube; gnathos arms short, lamellar; gnathos lamellar, with long thin lateral processes; valve short, with strongly curved semicircular costal edge and poorly curved saccular and outer edges; saccular edge (in basal half) strongly sclerotized, tubulate, with acute pyramidal harpe directed dorsally; juxta lamellar, robust; saccus almost reduced; phallus 2.5 times shorter than valve, thick, with robust spiky Cornutus in distal third, directed proximally.

Female. Length of fore wing 18 mm. Pattern the same as that of male. Setae on antennae shorter than those of male.

Female genitalia not studied.

Diagnosis. Externally, the species is most close to S. nepalensis and S. htetae , from which it differs in the acute harpe on the saccular edge of the valve.

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).