Radiarctia screabile screabile ( Wallengren, 1875 ) Wallengren, 1875

Haynes, Patrick G., 2011, A review of some of the Binna- like species of Afrotropical Spilosoma Curtis (1825) listed by Goodger & Watson (1995) and including the genus Radiarctia Dubatolov (2006) (Lepidoptera: Arctiidae, Arctiinae), Zootaxa 2811, pp. 22-36 : 24-25

publication ID

https://doi.org/ 10.5281/zenodo.277133

DOI

https://doi.org/10.5281/zenodo.6191663

persistent identifier

https://treatment.plazi.org/id/03DA8D36-1564-EF14-FF6F-FDE4FEF2FD32

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Plazi (2016-04-10 07:36:14, last updated 2024-11-26 23:46:05)

scientific name

Radiarctia screabile screabile ( Wallengren, 1875 )
status

comb. nov.

Radiarctia screabile screabile ( Wallengren, 1875) comb. n.

Figures 1, 2, 4, 5 View FIGURES 1 – 8 , 19, 20, 21 View FIGURE 17 – 24 .

Spilosoma screabile Wallengren, 1875: 102 .

Phissama screabile ( Wallengren, 1875) ; Fawcett, 1900: 316.

Diacrisia lutescens (Walker, 1855) ; Hampson, 1901: 295.

Spilosoma semihyalina Bartel, 1903 ; Hampson, 1920: 395.

Spilosoma screabilis Wallengren, 1875 ; Hampson, 1920: 395; Gaede, In Seitz, 1930: 98.

Spilosoma lutescens screabile Wallengren, 1875 ; Goodger & Watson, 1995: 18.

Radiarctia lutescens screabilis ( Wallengren, 1875) ; Dubatolov, 2006: 148.

Type locality: Transvaalia [ South Africa, Transvaal]. Range: Kenya, Tanzania, Malawi, Democratic Republic of the Congo, Angola, Zambia, Zimbabwe, South Africa.

Material examined. Kenya: Nairobi, 1 ɗ / Arctiidae genitalia slide 6280, 1 Ψ ( BMNH), 1 ɗ (PGH); Suna (S. Kivirondo), 1 ɗ; Kitale, 21 ɗɗ ( BMNH). Tanzania: Amani, 1 ɗ; Mbeya, 2 ɗɗ; Marungu Plateau, 2 ɗɗ ( BMNH). Malawi: Lake Nyasa, 1 Ψ; Likoma, 1 ɗ; Mt.Mulanje, 1 Ψ ( BMNH); Chinteche, 1 ɗ / genitalia slide AR16 ( MRAC). Democratic Republic of the Congo: “Region de M’Pala” [Mpala,? west edge of Lake Tanganyika], 1 Ψ ( BMNH); Lubumbashi, 1 ɗ / genitalia slide AR18 ( MRAC). Angola: Mt. Moco, Luimbali, 1800m, 1 ɗ / genitalia slide S13 (PGH), 4 ɗɗ ( BMNH); Gamba, 1 ɗ; N’dalatando, 4 ɗɗ ( BMNH). Zambia: Mwinilunga Township, 7 ɗɗ, 1 ɗ / genitalia slide S10, 1 Ψ (PGH); Fort Jameson [Chipata] 1 ɗ; Mumbwa, 1 ɗ; “Gimson” (labelled as in N. Rhodesia), 4 ɗɗ, 6 ΨΨ ( BMNH); Chalimbana, 1 ɗ / genitalia slide S19; Ndola, 1 ɗ / genitalia slide S106 (PGH). Zimbabwe: Bulawayo, 1 Ψ; Harare, 1 ɗ ( BMNH), 8 ɗɗ / genitalia slides S11, S116, S124, S125, S126, 8 ΨΨ / genitalia slides S94, S134, S141, S158 (PGH); Nr. Marondera, Tarisira, Gosho Park, 1500m, e.l., 2 ɗɗ / genitalia slides S107, S117; Bvumba, Laurenceville, 1200m, e.o., 6 ɗɗ / genitalia slides S109, S119, 1 Ψ; Nr. Chimanimani N.P., Hayfield B, 920m, 14 ɗɗ / genitalia slides S113, S115, 2 ΨΨ, 1 Ψ / genitalia slide S135 (PGH). South Africa: Blyde River Nature Reserve [E. Transvaal], 1 ɗ / genitalia slide S103, legs & antenna slide S247; Rustenburg [Nature Reserve], 1 ɗ; KwaZulu Natal, Ngome State Forest, 1 ɗ (PGH); Pietermaritzburg ( Natal), 2 ɗɗ, 2 ΨΨ ( BMNH), 1 ɗ ( TMP); Natal, Durban, 2 ɗɗ, 1 ɗ / Arctiidae genitalia slide 6281, 1 Ψ ( BMNH), 1 ɗ ( TMP); Verulum, 2 ɗɗ; Zululand, St. Lucia, 1 ɗ; Natal, Muden, 1 ɗ, 2 ΨΨ; Natal, Howick, 1 ɗ; Natal (no localities stated), 1 ɗ ( ZSM), 11 ɗɗ, 1 Ψ / Arctiidae genitalia slide 6282 ( BMNH); Ladysmith, 1 ɗ; Pretoria, 1 ɗ, 2 ΨΨ; Port St. John, 1 ɗ; Pondoland, Umtata, 2 ɗɗ ( BMNH); North Drakensburg, Giant’s Castle National Nature Reserve, 1 ɗ ( SZMN).

Description. Forewing: ɗ 19 – 23mm, Ψ 23 – 28mm. Male. HEAD: Grey with deep orange nuchal fringe. Palp brown dorsally, deep orange ventrally. Antenna bipectinate; longest pectination approximately half the diameter of the eye. THORAX: Patagium grey with orange posterior fringe. Tegula grey, pale orange laterally and posteriorly. Mesonotum and metathorax orange, grey mediodorsal streak. Legs: Femur and tibia dark grey dorsally, orange ventrally; tarsus dark grey. Small foretibial spine present. Forewing yellowish orange with grey interneural patches in most spaces, occasionally less distinct between veins M2 and CuA2. Hindwing paler, almost semihyaline in some specimens. Underside of fore and hind wings as upper surface but much paler. ABDOMEN: Orange dorsally with long or short black intersegmental bands; lateral row of black spots and a row of feint black sublateral dashes; pale grey ventrally. Genitalia: Posterior margin of eighth abdominal tergite more or less convex. Eighth sternum with a distinct medial sclerite and lobate and moderately helical lateral processes. Coremata present. Saccus rounded and well developed. Juxta wide, partially divided at the base, and lightly concave posteriorly. Valva more or less bifurcate apically. Uncus wide and tapering to a slightly hooked apex. Aedeagus without apical spines; vesica lightly scobinate with a pronounced group of spines basally, and two or three groups of cornuti distally (cornuti described by Dubatolov, 2006 as push-pin-like shape). Female. As the male but larger, and darker orange with more pronounced dark grey interneural forewing patches. Hindwing deeper yellowish orange, not semihyaline. Underside of wings slightly paler than upperside. Genitalia: Ductus bursae short and wide. Corpus bursae with three distinct signa of small concentrically arranged cornuti. Bulla seminalis large and extending approximately half length of bursa copulatrix.

Comments. Allowing for interpretation of faded and worn material (see Introduction), there is noticeable variation in intensity of the grey interneural patches and the black intersegmental bands. On the vesica the cornuti vary in number together with the occasional absence of basal spines. However, despite the examination of a large number of specimens, there was no robust evidence of geographical variation (but see R. nyangana below) or of any clinal distribution.

Bartel, M. (1903) Neue aethiopische Arctiidae der Sammlung des Kgl. Museums fur Naturkunde in Berlin. Deutsche Entomologische Zeitschrift Iris, 16, 170 - 220.

Dubatolov, V. V. (2006) New genera and species of Arctiinae from the Afrotropical fauna (Lepidoptera: Arctiidae). Nachrichten des Entomologische Vereins Apollo, 27 (3), 139 - 152.

Fawcett, J. M. (1900) Notes on the transformations of some South-African Lepidoptera. Transactions of the Zoological Society of London XV: (VI: 1) 316 + plate xlix.

Hampson, G. F. (1901) Catalogue of the Lepidoptera Phalaenae in the British Museum. London, 3, xiv + 690 pp.

Hampson, G. F. (1920) Catalogue of the Lepidoptera Phalaenae in the British Museum. London, 2 (supplement) xxiii + 619 pp.

Gaede, M. & Seitz, A. (1930) Die Gross-Schmetterling der Erde, 14, 597 pp. Stuttgart. Goodger, D. T. & Watson, A. (1995) The Afrotropical Tiger-Moths. Denmark, 65 pp.

Wallengren, H. D. J. (1875) Insecta Transvaaliensia-Bidragtill Transvaalska Republikens; Sodra Afrika insektfauna. Fversigt af Kongl. Vetenskaps-Akademiens Forhandlinger, 32, 83 - 137.

Gallery Image

FIGURES 1 – 8. Figs. 1 – 2. Radiarctia screabile. 1. R. screabile displaying orange cervical hairs. 2. R. screabile type 2 sustained static display. Fig. 3. Binna penicillata, ♂, Kenya, Suna (BMNH). Figs. 4 – 6. Radiarctia spp. 4. R. screabile screabile, ♂, Zimbabwe, Harare (PGH). 5. R. screabile screabile, Ψ, Zimbabwe, Harare (PGH). 6. R. screabile nyangana, holotype ♂, Zimbabwe, Nyanga (BMNH). Figs. 7 – 8. Pseudoradiarctia spp. 7. P. rho de s i a na, ♂, Zimbabwe, Nyanga (PGH). 8. P. rhodesiana (Hampson), paralectotype Ψ, Zimbabwe, Harare (BMNH).

Gallery Image

FIGURE 17 – 24. Fig. 17. P. scita, Ψ, South Africa, Natal, Umkomaas (BMNH) Fig. 18. Binna penicillata, holotype ♂ genitalia, Sierra Leone, slide 3475 (BMNH). Figs. 19 – 21. Radiarctia spp. genitalia. 19. R. screabile screabile, ♂ genitalia, Zimbabwe, Harare, slide S 113 (PGH). 20. R. screabile screabile, ♂ abdomen, Zimbabwe, Harare, slide S 113 (PGH). 21. R. screabile screabile, Ψ genitalia, Zimbabwe, Harare, slide S 158 (PGH). Figs. 22 – 24. Pseudoradiarctia spp. genitalia. 22. P. rh o d e s i a n a, lectotype ♂ genitalia, Zimbabwe, Harare, slide 136 (BMNH). 23. P. rh o d e s i a n a, ♂ abdomen, Zimbabwe, Nyanga, slide S 266 (PGH). 24. P. lentifasciata, ♂ genitalia, Zimbabwe, Harare, slide S 234 (PGH).

MRAC

Musée Royal de l’Afrique Centrale

TMP

Transvaal Museum

ZSM

Bavarian State Collection of Zoology

SZMN

Siberian Zoological Museum

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Lepidoptera

Family

Arctiidae

SubFamily

Arctiinae

Genus

Radiarctia