Acanthosia tryphosa tryphosa ( Kiriakoff, 1958 ), 2025

Volynkin, Anton V., 2025, Contribution to the knowledge of the Afrotropical Archithosia Birket-Smith generic complex with the description of a new genus, nineteen new species and a new subspecies, and introduction of new combinations (Lepidoptera: Erebidae: Arctiinae: Lithosiini), Ecologica Montenegrina 82, pp. 1-63 : 8

publication ID	https://doi.org/10.37828/em.2025.82.1
publication LSID	lsid:zoobank.org:pub:35522E72-ABB8-47C1-AB07-3B7BF7391755
DOI	https://doi.org/10.5281/zenodo.16961870
persistent identifier	https://treatment.plazi.org/id/1D5087DA-FFE7-2149-FF1E-FF2B4523FABB
treatment provided by	Felipe
scientific name	Acanthosia tryphosa tryphosa ( Kiriakoff, 1958 )
status	comb. n.

Treatment

Acanthosia tryphosa tryphosa ( Kiriakoff, 1958) , comb. n.

( Figs 3–7 View Figures 1–15 , 90–94 View Figures 89–93 View Figures 94–97 , 151 View Figures 150–155 )

Phryganopsis tryphosa Kiriakoff, 1958 View in CoL , Ruwenzori Expedition 1952 , 1 (2): 16, figs 35–37, 55 (Type locality: [ Uganda, Ruwenzori Mts ] “Bwamba Pass (west side), 5500–7500 ft. ”).

Additional material examined. UGANDA: Paratype : male, Uganda, Ruwenzori Range , Bundibugyo, 3400 ft., 22.viii.–3.ix.1952, D.S. Fletcher [leg.] / Ruwenzori Exped. B.M. 1952 –566 / yellow ring “ Paratype ” label / Arctiidae genitalia slide No. 46 / QR- code label with unique ID: NHMUK 015057258 ( NHMUK). Non-paratype: 2 males, 2 females, 1700m, Bwindi Impenetrable N.P., Cuckooland Lodge, 01°00'17''S, 29°43'06''E, 28–29.vi.2022, Naumann, S., Ott, E., Schintlmeister, A., Sulak, H. leg., gen. slide Nos: AV9072 ♂, AV9073 ♂, AV9074 ♀, AV9075 ♀ ( ANHRT). DRC: 1 male, 950m, Mamove, Nord-Kivu, 0°49'N 29°27'E, v.2017, ex A. Colley, gen. slide No.: AV8969 ( ANHRT).

Remark. The dissected female paratype (‘allotype’) of A. tryphosa (slide No. BMNH Arctiidae 35) has genitalia very similar to A. pervolgata sp. n. and is highly likely conspecific with it. However, to confirm the occurrence of A. pervolgata sp. n. in Uganda the examination of additional, male specimens is necessary.

Diagnosis. The forewing length is 12.0– 13.5 mm in males and 13.5–15.0 mm in females. In the male genitalia, A. tryphosa differs from other congeners (except for A. similis : see Remark 2 under the genus Acanthosia ) in the large, spike-like proximal lobe of the distal saccular process situated at the base of the latter making it proportionally very long. The female genitalia of A. tryphosa differ from A. reducta sp. n. and A. pervolgata sp. n. in the reduced, extremely short ductus bursae and the sclerotised area of the posterior section of the corpus bursae situated latero-posteriorly whereas it is situated mediolaterally in A. reducta sp. n. and broad belt-like in the posterior section of the corpus bursae in A. pervolgata sp. n.

Distribution. The nominate subspecies is currently known from Uganda and north-eastern DRC. Unfortunately, the author of the present paper had no chance to examine Acanthosia specimens from Kakamega Forest (western Kenya), which were reported by Kühne (2008) as ‘ Phryganopsis tryphosa ’, therefore the taxonomic assignment of this population remains unclear and requires further clarification.