Diduga albicosta Hampson, 1891

Bayarsaikhan, Ulziijargal, Lee, Dong ˗ June & Bae, Yang ˗ Seop, 2018, Three new species of Diduga Moore, [1887] (Lepidoptera, Erebidae, Arctiinae) from Cambodia, Zootaxa 4514 (3), pp. 411-424 : 412-415

Diduga albicosta Hampson, 1891

( Figs. 1 , 12 , 17 )

Diduga albicosta Hampson, 1891 , Ill. Typical Spec. Lep. Het. Colln. Br. Mus. 8: 5, 53, pl. 140: 17. TL: India (Nilgiris). Diduga albicosta: Hampson, 1900 , Cat. Lep. Phalaenae Br. Mus. 2: 540, fig. 395.

Diduga albicosta: Černý & Pinratana, 2009 , Moths of Thailand 6: 12, pl. 1: 17.

Diduga albicosta: Bucsek, 2012 , Erebidae , Arctiinae ( Lithosiini , Arctiini ) of Malay Peninsula˗ Malaysia: 24, pl. 4: 50. Androstigma albicosta: Hampson, 1893 , Ill. Typical Spec. Lep. Het. Colln. Br. Mus. 9: 82, pl. 158, f. 25.

Diagnosis. Wingspan 13˗14 mm in male and female. D. albicosta is similar to D. dubatolovi n. sp., both of them with deep yellow margins along the costa and distally in forewing, but it can be distinguished by the following characters: hind border of deep yellow margins with a shallow angle in tornus; antemedial and postmedial dark spots on costa; hindwing dark gray with dark brown patch of androconia edged with white ( Figs. 1a, 1b ); in male genitalia ( Fig. 12 ), valva distinctly narrower over apical half, blunted; saccus rectangular; aedeagus short, straight, and vesica with one plate˗shaped cornutus; in female genitalia ( Fig. 17 ), ductus bursae tubular, membranous, with a large sclerotized plate in cervix of bursae; corpus bursae ovoid, membranous, with one rounded signum.

Material examined. Cambodia: 1 ♂, Seima, Mondulkiri Prov. (N12˚14′56.80″, E107˚03′17.10″), 15.VIII.2013 (YS Bae, YD Ju, BS Park, SM Na, JW Kim), Gen. Slide No. INU˗1417C ; 1 ♂, Kirirom, Koh Kong Prov. (N11˚19′14.77″, E104˚02′11.67″), 6.II.2014 (YS Bae, KS Oh, YD Ju, MJ Qi, BS Park, SM Na, JW Kim, DJ Lee) ; 10 ♂, 3 ♀, Pramaoy, Pursat Prov. (N12˚12′38.72″, E102˚53′54.76″), 8˗9.II.2014 (YS Bae, KS Oh, YD Ju, MJ Qi, BS Park, SM Na, JW Kim, DJ Lee), Gen. Slide No. INU˗1194C, 1776C, 1998C, 1999C ; 1 ♀, Samkos, Koh Kong Prov. (N12˚18′16.0″, E103˚06′7.00″, Alt. : 310m), 9.II.2014 (YS Bae, YD Ju, MJ Qi, BS Park, SM Na, JW Kim, DJ Lee), Gen. Slide No. INU˗10002C ; 1 ♂, Samkos, Koh Kong Prov. (N12˚12′47.8″, E102˚54′23.8″), 23.XII.2014 (YS Bae, YD Ju, MJ Qi, U Bayarsaikhan, BS Park, SM Na, JW Kim, DJ Lee) ; 1 ♀, Samkos, Koh Kong Prov. (N12˚12′12.6″, E102˚52′10.8″, Alt. : 647m), 7. II.2015 (YS Bae, YD Ju, BS Park, SM Na, JW Kim, DJ Lee), Gen. Slide No. INU˗1413C ; 1 ♂, Bokor, Kampot Prov. (N10˚39′11″, E104˚03′11″), 27.XII.2014 (YS Bae, YD Ju, MJ Qi, U Bayarsaikhan, BS Park, SM Na, JW Kim, DJ Lee), Gen. Slide No. INU˗1742C .

Distribution. Cambodia (Kampot, Koh Kong, Mondulkiri, Pursat provinces), India, Thailand, Sri Lanka, peninsular Malaysia.

Remarks. This species was reported from Cambodia by Bae et al. (2016).

Figures

FIGURES 1–6. Adults of genus Diduga spp. from Cambodia. 1a. D. albicosta, male (INU˗1742C). 1b. ditto, female (INU˗1998C). 2a. D. dubatolovi n. sp., male (holotype, INU˗1775C). 2b. ditto, female (paratype, INU˗1193C). 3a. D. kohkongensis n. sp., male (holotype, INU˗1412C). 3b. ditto n. sp., female (paratype, INU˗1743C). 4. D. bispinosa n. sp., male (holotype, INU˗1415C). 5. D. barlowi, male (INU˗1410C). 6. D. amoenusa, male (INU˗1411C).

FIGURES 12–16. Male genitalia of genus Diduga spp. from Cambodia. 12. D. albicosta (INU˗1194C). 13. D. amoenusa (INU˗1411C). 14. D. barlowi (INU˗1410C). 15. D. alternota (INU˗1424C). 16. D. annulata (INU˗1420C). Scale bar = 0.5 mm.

FIGURES 17–21. Female genitalia of genus Diduga spp. from Cambodia. 17. D. albicosta (INU˗1998C). 18. D. alternota (INU˗1416C). 19. D. annulata (INU˗1745C). 20a. D. dubatolovi n. sp. (paratype, INU˗10005C). 20b. ditto, cervix of bursae (paratype, INU˗1997C). 21. D. kohkongensis n. sp. (paratype, INU˗1743C).