Siccia imana Volynkin, 2019

Volynkin, Anton V., 2019, Siccia imana, a new species from Rwanda (Lepidoptera: Erebidae: Arctiinae), Zootaxa 4571 (2), pp. 285-289 : 285

Siccia imana Volynkin , sp. nov.

( Figs 1–4 , 10 , 13, 14 )

urn:lsid:zoobank.org:act:B181BEE5-477F-425C-8A62-ED022D678A03

Type material. Holotype ( Figs 1 , 10 ): ♂, Rwanda, Nyungwe , 8.III. [19]75, B. Turlin [leg.], 2000 [m], slide ZSM Arct. 186/2017 ♂ (Coll. ZSM).

Paratypes: 1 ♀, Rwanda, Nyungwe , 2000 m, K16, B. Turlin [leg.], 15.I. [19]77, slide ZSM Arct. 224/2017 ♀ (Coll. ZSM); 1 ♂, 1 ♀, Rwanda, Nyungwe NP, 1800 m, Busoro, 2°32’S 29°11’E, 29. VII.2008, leg. J. & W. De Prince, slides NHMUK010315259 (♂), NHMUK010315260 (♀) Volynkin (Coll. NHMUK) .

Etymology. Imana is the Creator deity in the traditional Banyarwanda religion in Rwanda.

Diagnosis. The closest relative of the new species is Siccia microsticta Hampson, 1914 ( Figs 5–8 ), from which S. imana sp. nov. ( Figs 1–4 ) can be easily distinguished by its much larger size (forewing length is 11–13.5 mm in the new species and 7–9.5 mm in S. microsticta ), and well-developed antemedial, medial and subterminal transverse lines (while in S. microsticta only postmedial line is more or less visible, but usually diffuse). Externally, S. imana most resembles Siccia atriguttata Hampson, 1909 ( Figs 9 , 12 ), but differs by its larger size (forewing length is 10–11 mm in S. atriguttata ), shorter pectination of male antennae, more diffuse pattern elements, solid medial line (while that is interrupted medially in S. atriguttata ), and the male genitalia structure. The male genitalia of S. imana ( Fig. 10 ) differs from that of S. microsticta ( Fig. 11 ) by its uncus being slightly broader medially, broader costa with a short bulge basally (that is absent in S. microsticta ), narrower and trigonal distal lobe of the dorsal part of valva (while that is much broader and more or less rounded in S. microsticta ), broader spinulose tip of the distal saccular process, broader aedeagus, and absence of a subbasal dorsal cluster of short spinules in vesica. The female genitalia of S. imana ( Figs 13, 14 ) differs from that of S. microsticta ( Fig. 15 ) by its larger papillae anales, heavily sclerotized and rugose antevaginal lateral lobes, which are directed laterally (while those are more weakly sclerotized, densely setose, C-like curved and directed more or less posteriorly in S. microsticta ), narrower and membranous ductus bursae (that is broader and heavily sclerotized in S. microsticta ), rectangular posterior plate of corpus bursae situated at connection with ductus bursae (in S. microsticta , that is elliptical with V-like posterior groove and situated more posteriorly, in the membranous anterior section of ductus bursae), and solid lateral band of spinules in corpus bursae (that is interrupted and consists of a long band and a separated bunch of spinules in S. microsticta ).

Figures

FIGURES 1–9. Siccia spp.: adults. 1, S. imana, holotype ♂, SW Rwanda (ZSM); 2, S. imana, paratype ♂, SW Rwanda (©NHMUK); 3, S. imana, paratype ♀, SW Rwanda (©NHMUK); 4, S. imana, paratype ♀, SW Rwanda (ZSM); 5, S. microsticta, holotype ♂, Ghana (©NHMUK); 6, S. microsticta, ♂, Ivory Coast (ANHRT); 7, S. microsticta, ♂, Liberia (ANHRT); 8, S. microsticta, ♀, Liberia (ANHRT); 9, S. atriguttata, holotype ♂, Angola (©NHMUK).

FIGURES 10–12. Siccia spp.: male genitalia. 10, S. imana, holotype, SW Rwanda, slide ZSM Arct. 186/2017♂ Volynkin; 11, S. microsticta, Ivory Coast, slide AV3354♂ Volynkin; 12, S. atriguttata, Zambia, slide AV4469♂ Volynkin.

FIGURES 13–15. Siccia spp.: female genitalia. 13, S. imana, paratype, SW Rwanda, slide ZSM Arct. 224/2017♀ Volynkin; 14, S. imana, paratype, SW Rwanda, slide NHMUK010315260 Volynkin (©NHMUK); 15, S. microsticta, Liberia, slide AV4601♀ Volynkin.