Cyana (Cyabarda) nambi, Volynkin & László, 2019

Volynkin, Anton V. & László, Gyula M., 2019, On the taxonomy of the subgenera Cyabarda Karisch, 2013, Idiovulpecula Karisch, 2013 and Paravulpeculella Karisch, 2013 of the genus Cyana Walker, 1854, with descriptions of three new species from Africa (Lepidoptera, Erebidae, Arctiinae, Lithosiini), Zootaxa 4664 (3), pp. 377-389 : 379-382

Cyana (Cyabarda) nambi sp. nov.

( Figs 1, 2 , 16 , 24 )

urn:lsid:zoobank.org:act:9A954F72-F42F-4697-8BD3-BDC6D4CF9B9E

Type material. Holotype ( Figs 1 , 16 ): ♂, “ Uganda, Kibale National Park, Biol. Field Station , 19.–24.XI.2014, LF, leg. W. Mey ”, slide AV4250 ♂ Volynkin (Coll. ZMB).

Paratypes: 3 ♂, 1 ♀, with the same data as the holotype, slide Nos: AV4251 ♀, AV4849 ♂ ( Coll. ZMB) ; 2 ♂, Uganda, Mpigi, Mpanga Forest , 25–30.XI.2014, LF, leg. W. Mey (Coll. ZMB) ; 1 ♀, Uganda, Kibale Forest, 1510m, Biological Field Station, Nordrand , ca. 14 km SO Fort Portal, Rand gestörter Regenwald , 0°33’44.6’’N, 30°21’24.7’’O, 19.X.2014, LF, leg. K.-R. Beck / Gen. Präp. 3309 präp. KARISCH 2015 (Coll. CKDT) .

Diagnosis. Cyana nambi ( Figs 1, 2 ) is a sister species of C. torrida ( Figs 3, 4 ), from which it can be distinguished by its larger size, darker, spot-like posteriorly broadened postmedial line, subapically more strongly broadened subterminal line, and the presence of greyish brown irroration on both wings (which is absent in C. torrida ). The male genitalia of C. nambi ( Fig. 16 ) are similar to those of C. torrida ( Fig. 17 ), but in C. nambi the uncus is narrower, the lateral apical processes of juxta are slightly larger, the saccus is rectangular apically (that is more rounded in C. torrida ), the ampulla is narrower and hook-like curved (that is club-shaped in C. torrida ), the distal saccular process is longer and slightly curved dorsad (that is straight in C. torrida ), the aedeagus is much narrower distally and has shorter transverse dentate carinal crest, the cornuti of the subbasal patch are more robust, the sclerotised area on the lateral diverticulum is broader, and the distal diverticulum is slightly smaller. The female genitalia of C. nambi ( Fig. 24 ) differ from those of C. torrida ( Figs 25, 26 ) by its longer apophyses posteriores, the slightly broader and more rectangular antrum and the slightly larger signum bursae.

Description. External morphology of adults. Male ( Fig. 1 ). Forewing length 9–9.5. Antenna ciliate. Head white; thorax white with four greyish brown spots; abdomen white with admixture of greyish hairs. Forewing ground color off-white with pale greyish irroration, pattern greyish brown. Subbasal dot large. Costa at base with short longitudinal dash. Antemedial line S-curved, interrupted into four spots: one small at costa, one (the smallest) in the cell, one (the largest) postero-medially and one small at anal margin. Three discal spots present at the end of the cell. Postmedial line interrupted, represented by a large, broad spot at anal margin and a small diffuse spot anteriorly of it. Subterminal line interrupted, represented by a relatively large spot at apex and a diffuse small spot posteriorly of it situated near the outer margin. Cilia creamy-white. Hindwing off-white with intense greyish brown irroration at apex and along the outer margin. Female ( Fig. 2 ). Forewing length 12–13 mm. Antenna weakly ciliate, with shorter ciliae than in male. Forewing ground colour pale grayish white, wing pattern similar to that of male but greyish brown suffusion on hindwing much more intense than in male, and cell with two discal spots only: a medial and a distal one. Male genitalia ( Fig. 16 ). Uncus short, narrowly trigonal, dorso-ventrally flattened, fused with tuba analis basally. Tuba analis narrow, subscaphium setose. Tegumen short, relatively narrow. Juxta broadly trapezoidal, with a pair of short club-like latero-apical processes. Vinculum broad, robust, rectangular with rounded corners, saccus well developed, quadrangular, heavily sclerotised. Valva broad at base, slightly tapered distally. Costa concave; transtilla large, robust, broadly trigonal with rounded apex and convex dorsal margin. Ampulla short, curved, hook-like, densely setose. Cucullus short, narrow, weakly setose, apically rounded. Sacculus moderately broad, heavily sclerotised. Distal saccular process robust, elongated, laterally flattened, slightly curved dorsad, with small pointed denticle on apex. Aedeagus tubular, robust, tapered medially, slightly broadened proximally with small trigonal coecum, considerably broadened distally. Distal section of aedeagus with one long and robust weakly dentate transverse crest ventrally and one small and weakly dentate crest dorsally. Vesica short, with short subbasal dorsal diverticulum bearing three short but robust dent-like cornuti at base; lateral globular diverticulum with granulation and sclerotised area latero-ventrally; small granulated diverticulum laterally; and broad globular, heavily granulated distal diverticulum. Female genitalia ( Fig. 24 ). Ovipositor short, broad; papillae anales broadly rectangular with rounded corners. Apophyses anteriores short, relatively broad, flattened, pointed apically. Apophyses posteriores thin, approximately 3 times longer than apophyses anteriores. Ostium bursae very broad. Antrum conspicuously broad, rectangular with rounded anterior corners, heavily sclerotised, rugose. Corpus bursae sack-like, its posterior two thirds sclerotised, strongly rugose anteriorly; anterior third of corpus bursae membranous, with small rounded signum. Appendix bursae small, narrowly conical, membranous, situated ventro-posteriorly, directed laterally.

Distribution. Uganda (Western and Central Regions).

Etymology. Nambi is the daughter of Ggulu, the creator deity in the Ugandan mythology.

Figures

FIGURES 1–8. Cyana spp.: adults. 1, C. nambi, holotype ♂, Uganda (ZMB); 2, C. nambi, paratype ♀, Uganda (CKDT) (Photo by T. Karisch); 3, C. torrida, ♂, Ghana (©NHMUK); 4, C. torrida, holotype ♀, Equatorial Guinea (CMNH); 5, C. suessmuthi, ♂, Liberia (ANHRT); 6, C. suessmuthi, ♀, Liberia (ANHRT); 7, C. pallidilinea, holotype ♂, DR Congo (ZSM); 8, C. pallidilinea, ♀, Zambia (ANHRT).

FIGURES 16–19. Cyana spp.: male genitalia (genital capsule and aedeagus of each species are given in the same scale). 16, C. nambi, holotype, Uganda, slide AV4250 (ZMB); 17, C. torrida, Ghana, slide NHMUK010315303 (©NHMUK); 18, C. suessmuthi, Ivory Coast, slide AV4489 (ANHRT); 19, C. pallidilinea, holotype, DR Congo, slide ZSM Arct. 233/2017 Volynkin (ZSM).

FIGURES 24–28. Cyana spp.: female genitalia. 24, C. nambi, paratype, Uganda, slideAV4251 (ZMB); 25, C. torrida, holotype, Equatorial Guinea, slide LG 4870 László (CMNH); 26, C. torrida, Ghana, slide BMNH(E) Arct.-5909 Karisch (©NHMUK); 27, C. suessmuthi, Liberia, slide AV4484 (ANHRT); 28, C. suessmuthi, Liberia, slide AV4991 (ANHRT).