Hoploscopa triangulifera (Hampson, 1919)

Leger, Theo, Kehlmaier, Christian, Vairappan, Charles S. & Nuss, Matthias, 2020, Twenty-six new species of Hoploscopa (Lepidoptera, Crambidae) from South-East Asia revealed by morphology and DNA barcoding, ZooKeys 907, pp. 1-99 : 1

Hoploscopa triangulifera (Hampson, 1919) Figs 31 , 67 , 110

Material examined.

Holotype: ♂, with labels: "Holo- | type" [round label, red ringed]; "Fergusson I[sland]. | [word crossed] xii.[18]95, | (A, S, Meek)."; “.97.204.”; "Eudorina | triangulifera | type ♂. H[a]mps[o]n"[handwritten]; "Body re-affixed | 6.xii.[19]40 R.S.C." [handwritten]; "♀ | Pyralidae | Brit[ish].Mus[eum]. | Slide N°. | 20256"; "NHMUK010923353"[barcode appended]. Deposited in NHMUK.

Other specimens examined.

2♂, 2♀. Papua New Guinea: 1 ♂ (NHMUK010923452, genitalia on slide TL750 ♂), same locality as holotype, xi-xii.1894; 1 ♂ (genitalia on slide TL711 ♂, NHMUK010923454), 1 ♀ (genitalia on slide TL712 ♀, NHMUK010923453), Biagi, Mambare R., 1600 m, iii.1906, leg. A. S. Meek; 1 ♀ (NHMUK010923455), Dampier Island [Karkar], ii-iii.1914 (NHMUK).

Diagnosis.

The large median dorsal patch with costal margin rounded on the forewing is unique to H. triangulifera . In male genitalia, the gnathos shows no distal projection, and the saccus is broad, quadrangular. In female genitalia, ductus bursae is short and slender, corpus bursae is large, globular, and bears a long curved thorn.

Similar species.

No similar species known.

Description.

Head. Antennae dorsally pale yellow. Proboscis brown. Maxillary palpi brown, inner side pale brown. Labial palpi brown, ventral base pale yellow, inner side pale brown.

Thorax (Fig. 31 ). Thorax brown, dorsally pale yellow. Collar pale yellow. Forewing length: 7-8 mm (♂), 8-9 mm (♀); forewing ground colour brown; basal and distal discoidal stigmata dark brown; median discoidal stigma forming roughly defined white X; median cubital patch elliptic, dark brown with white edges; large median dark brown patch on dorsum with rounded pale yellow costal margin; postmedian patch triangular, dark brown; postmedian line pale yellow, marked on costal half; pale yellow and brown postmedian fascia on costal half in some specimens, edged distally by white subterminal line; fringes brown with white spots. Hindwing pale brown. Forelegs bronze, tarsi speckled with pale yellow. Midlegs with femur bronze; tibia brown, distally pale yellow; tarsi bronze. Hindlegs with femur bronze; tibia brown, basally and distally pale yellow; tarsi bronze.

Male genitalia (N = 2) (Fig. 67 ). Uncus broad, narrowing on distal half, apex truncate. Gnathos projection limited to small ridge. Valva ventral margin nearly straight, dorsal margin conspicuously convex, apex pointed. Juxta with broad rounded base, medially wide, apex broadly indented, weakly sclerotised. Saccus broad, quadrangular.

Female genitalia (N = 2) (Fig. 110 ). Anterior apophyses without dorsal bump at posterior 1/3. Antrum sclerotisation ca. twice as long as broad. Ductus bursae short, straight, slender. Corpus bursae globular, reticulated, with sclerotisation between thorn and corpus opening, and faintly marked sclerotised band medially. Thorn long, incurved, with small dents pointing toward thorn base on inner side, glabrous on outer side.

Distribution.

Known from the Madang, the Northern and the Milne Bay Provinces (Papua New Guinea) at altitudes of ca. 1,600 m.

Remarks.

Nuss (1998) transferred this species from Eudorina to Hoploscopa . The handwritten label from Hampson stipulates that the type is a male, while the abdomen dissected shows it is a female. The abdomen was re-affixed to the specimen, suggesting that either the sex wasn’t identified properly by Hampson or that the wrong abdomen was reaffixed to the specimen.

Figures

Figures 19 - 33. Forewing of Hoploscopa species 19 Hoploscopa danaoensis sp. nov., paratype, ♂, Philippines, Leyte, Lake Danao, 650 m, 14 - 17. iv. 1997 (Mey & Speidel) 20 Hoploscopa aurantiacalis Snellen lectotype, ♀, NHMUK 010923286, Indonesia, Java occ., Pengaleng, 4000 ft, 1893 (genitalia on slide Pyralidae Brit. Mus. Slide N ° 20246) 21 Hoploscopa brunnealis Snellen, lectotype, ♀, NHMUK 010923292, Indonesia, Java occ., Pengaleng, 4000 ft, 1893 (genitalia on slide Pyralidae Brit. Mus. Slide N ° 20247) 22 Hoploscopa ocellata Hampson, holotype, ♀, NHMUK 010923358, Indonesia, Moluccas, Batchian, iii. 1892 (W. Doherty) (genitalia on slide Pyralidae Brit. Mus. Slide N ° 20258) 23 Hoploscopa quadripuncta Rotschild, holotype, ♂, NHMUK 010923357, Indonesia, Papua, Utakwa River, 3000 ft, i. 1913 (A. F. R. Wollaston) (genitalia on slide Pyralidae Brit. Mus. Slide N ° 20257) 24 Hoploscopa semifascia Hampson, ♀, NHMUK 010923321, Papua New Guinea, Southern Highlands, Bosavi, 570 m, 6. i. 1986 (D. Agassiz) (genitalia on slide TL 740 ♀) 25 Hoploscopa subvariegata Rothschild, ♂, Morobe Province, near Wau, Mt. Kaindi, 2360 m, 27 - 28. vii. 1983 (S. E. & P. M. Miller) (genitalia on slide TL 642 ♂) 26 Hoploscopa persimilis Rothschild, lectotype, ♂, NHMUK 010923328, Indonesia, Papua, Utawka River, 3000 ft., i. 1913 (A. F. R. Wollaston) (genitalia on slide Pyralidae Brit. Mus. Slide N ° 20255) 27 Hoploscopa astrapias Meyrick, lectotype, ♀, NHMUK 010923383, Fiji, Vunidawa, 2. i. 1932 (genitalia on slide Pyralidae Brit. Mus. Slide N ° 20241) 28 Hoploscopa anamesa Tams, ♀, NHMUK 010923466, Vanuatu, Aneityum Island, Red Crest, 3 m NE of Anelgauhat, 1200 ft, vi. 1955 (E. Cheesman) (genitalia on slide TL 718 ♀) 29 Hoploscopa nauticorum Tams, allotype, ♀, Samoan, Upolu Island, Malololelei, 2000 ft, 21. ii. 1925 (P. A. Buxton & G. H. Hopkins) 30 Hoploscopa diffusa Hampson, lectotype, ♂, NHMUK 010923338, Papua New Guinea, Fergusson Island, x-xi. 1894 (A. S. Meek) (genitalia on slide Pyralidae Brit. Mus. Slide N ° 1014 ♂) 31 Hoploscopa triangulifera Hampson, ♀, NHMUK 010923453, Biagi, Mambare R., 1600 m, iii. 1906 (A. S. Meek) (genitalia on slide TL 712 ♀) 32 Hoploscopa anacantha sp. nov., holotype, ♂, NHMUK 010923444, Indonesia, North Sumatra, Dumoga-Bone N. P., Gunung Mogogonipa, summit, 1008 m, 18 - 20. x. 1985 (genitalia on slide TL 759 ♂) 33 Hoploscopa kelama sp. nov., paratype, ♂, NHMUK 010923342, Indonesia, North Sulawesi, Dumoga-Bone National Park, Clarke Camp, lower montane forest, 1140 m, x. 1985 (Royal Entomological Society of London, Project Wallace) (genitalia on slide TL 759 ♂).

Figures 64 - 69. male genitalia features of Hoploscopa. 64 Hoploscopa subvariegata, TL 534 ♂ 65 Hoploscopa persimilis, lectotype, Pyralidae Brit. Mus. Slide N ° BMNH 20255 ♂ (no juxta drawing) 66 Hoploscopa diffusa, holotype, Pyralidae Brit. Mus. Slide N ° BMNH 1014 ♂ 67 Hoploscopa triangulifera, TL 711 ♂ 68 Hoploscopa astrapias, TL 724 ♂ 69 Hoploscopa anamesa, TL 727 ♂.

Figures 107 - 110. Female genitalia features of Hoploscopa. 107 Hoploscopa astrapias, TL 23 ♀ 108 Hoploscopa anamesa, TL 718 ♀ 109 Hoploscopa subvariegata, lectotype, Pyralidae Brit. Mus. Slide N ° BMNH 20254 ♀ 110 Hoploscopa triangulifera, holotype, Pyralidae Brit. Mus. Slide N ° BMNH 20256 ♀.