Orgyarbela mackwoodi, 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 : 95

Orgyarbela mackwoodi sp. nov.

Figs 16 , 25

Material. Holotype: male, Burma, Kawkerait [16°33′20″N 98°14′24″E, Kawkarike, Karen Prov., Myanmar], v.1912, F.M. Mackwood ( NHMUK, individual number 012832505; slide NHMUK 010315536 ).

Description. Male. Length of fore wing 9 mm. Thorax and abdomen densely covered with brown scales, bunch of long dark-brown scales on tip of abdomen. Fore wing dark-brown, without pattern, fringe mottled: dark at veins, light between veins. Hind wing dark-brown without pattern, fringe pale brown.

Male genitalia. Uncus very robust, strongly extended from base to apex, with deep semicircular incision (for one third of uncus length); tegumen robust; gnathos arms of medium length; gnathos small; valve short, poorly sclerotized, with slightly sharpened apex,costal edge curved, abdominal edge hypertrophied, strongly sclerotized, small dentate harpe on abdominal edge (in medium third); juxta cup-like; saccus tiny; phallus short, straight, apically slightly sharpened.

Female unknown.

Diagnosis.The new species differs from both other species of the genus in the poorly modified coloring (the fore wing is dark-brown, without pattern), an important diagnostic feature in the genitals is the lanceolate narrowing distal tip of the valve.

Etymology. The new species is named after F. M. Mackwood (1843−1931) ( Fig. 33 ), a businessman (one of the founders of the tea house Mackwood’s Limited) in Colombo, a keen amateur lepidopterist. His specimens are kept at the Natural History Museum, Londonand the National Museum, Colombo ( Wijesekara & Wijesinghe, 2003).

Distribution. Myanmar: Karen Province.

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)