Orgyarbela kerri, Yakovlev & Zolotuhin, 2020

Yakovlev, Roman V. & Zolotuhin, Vadim V., 2020, Revision of the family Metarbelidae (Lepidoptera) of the Oriental Region. I. Introduction and genera Encaumaptera Hampson 1893, Orgyarbela gen. nov., and Hollowarbela gen. nov., Ecologica Montenegrina 38, pp. 84-101 : 94

Orgyarbela kerri sp. nov.

Figs 15 , 24

Material. Holotype: male, Laos, Nam Guak [Yuak river Valley, Wiengchau], 300 m, 25.iv.1932. French Ind. China, Dr. A. Kerr ( NHMUK, individual number 012832503; slide NHMUK 010315534 ).

Description. Male. Length of fore wing 10 mm. Thorax and abdomen densely covered with brown scales, bunch of long dark-brown scales on tip of abdomen. Fore wing light-brown with dense spotty dark-brown pattern of strokes throughout all wing, fringe mottled: dark at veins, light between veins. Hind wing dark-brown with yellow costal edge and yellow fringe.

Male genitalia. Uncus very robust, strongly extended from base to apex, with deep triangle incision (for half of uncus length); tegumen robust; gnathos arms of medium length; gnathos small; valve short, poorly sclerotized, lanceolate, costal edge almost smooth, abdominal edge hypertrophied, strongly sclerotized, small dentate harpe on abdominal edge (in medium third); juxta cup-like; saccus tiny; phallus short, curved in medium third, gradually narrowing from middle to top.

Female unknown.

Diagnosis. Externally, the new species is closer to O. millemaculata , from which it differs in the darker color, more split uncus and the harpe situated closer to the abdominal edge of the valve.

Distribution. Northern Laos ( Kerr 1933; Jacobs 1962).

Etymology. The new species is named after its collector – the most active researcher if the Indo-China fauna, the Irish doctor A.F.G. Kerr (1877–1942) ( Fig. 32 ), who made a trip to the highest point of Laos in 1932 and collected insects along the way.

Figures

Figures 1−16. Adult specimens of Oriental Metarbelidae: 1. Indarbela tetraonis (Moore, 1879), male, S. India, Madurai, 18.vii.1985, leg. M. Eckrich (ZSM); 2. Indarbela tetraonis (Moore, 1879), female, S. India, Madurai, 2.vii.1985, leg. M. Eckrich (ZSM); 3. Squamicapilla arenata W. Schultze, 1908, male, the Philippines, E. Luzon, Aurora Prov., Sra Madre, 14 km S of Dilalongan, Dapalan river, 50 m, 16°02.709N / 121°42.667E, 11/12 Feb 2008, J.H. Lourens/K. Knoblich leg. (MWM); 4. Squamura maculata Heylaerts, 1890, male, Indonesia, East Java, Mt. Argopuro, 1200 m, 7−12.x.2004, leg. Jäkl (MWM); 5. Encaumaptera stigmata (Hampson, 1891), male, type (from Hampson 1891); 6. E. stigmata, male, Sri Lanka (Ceylon), Prov. Uva (Yala Nat. Park), Monaragalla/Gelge, 100 m, 29−30.v.1995, leg. Schnitzler (MWM); 7. E. stigmata, male, Sri Lanka (Ceylon), Prov. Uva (Yala Nat. Park), Monaragalla distr., Gelge, 100 m, 2−4.vi.1995, leg. Schnitzler (MWM); 8. E. devyatkini sp. nov., male, holotype (MWM); 9. E. aurora sp. nov., male, holotype (MWM); 10. E. aurora sp. nov., male, paratype, Thailand, Isthmus of Kra, Ranong [9°57′ N 98°38′ E], TV-station, 500 ms, Mitte April 2002, leg. loc. coll., ex coll. S. Loeffler (RYB); 11. Hollowarbela kinabalua (Holloway, 1976), male, holotype (from Holloway 1980); 12. H. kinabalua, male, Malaysia, Sabah, Trus Madi, 1100 m, 4−24.iv.2002, Martini leg. (MWM); 13. Orgyarbela millemaculata (Hampson, 1897), male, syntype (NHMUK); 14. O. millemaculata (Hampson, 1897), female, Khasis, May 1894 (NHMUK); 15. O. kerri sp. nov., male, holotype (NHMUK); 16. O. mackwoodi sp. nov., male, holotype (NHMUK). Scale bar 1 cm.

Figures 17−26. Male genitalia of Oriental Metarbelidae:17. Indarbela tetraonis (Moore, 1879), S. India, Madurai (slide ZSSM 2016/4 Coss); 18. Squamicapilla arenata W. Schultze, 1908, the Philippines, E. Luzon, Aurora Prov. (slide Genitalpräparat Heterocera MWM Nr. 27.981); 19. Squamura maculata Heylaerts, 1890, Indonesia, East Java (slide Genitalpräparat Heterocera MWM Nr. 27.983); 20. Encaumaptera stigmata (Hampson, 1891), Sri Lanka (Ceylon) (GenPr MWM: 26.649); 21. E. devyatkini sp. nov., holotype (Genitalpräparat Heterocera MWM Nr. 27.986); 22. E. aurora sp. nov., holotype (slide Genitalpräparat Heterocera MWM Nr. 26.648); 23. Orgyarbela millemaculata (Hampson, 1897), Khasis (slide NHMUK010315538); 24. O. kerri sp. nov., holotype (slide NHMUK 010315534); 25. O. mackwoodi sp. nov., holotype (slide NHMUK 010315536); 26. Hollowarbela kinabalua (Holloway, 1976), Malaysia, Sabah, Trus Madi (Genitalpräparat Heterocera MWM Nr. 28.047).

Figures 31−33. Portraits of Entomologists: 31. Alexey L. Devyatkin (photo from private archive of Anatoliy Krupitsky); 32. A.F.G. Kerr (photo from http://www.nationaalherbarium.nl/); 33. F.M. Mackwood (photo from http://www.mackply.com/history-of-mackwoods.html)