Cyana titovi Volynkin, Černý & Ivanova, 2019

Volynkin, Anton V., Černý, Karel, Saldaitis, Aidas & Ivanova, Maria S., 2019, On the correct identification of ‘ Cyana dohertyi (Elwes, 1890) ’ from northern Indochina and China, with descriptions of two new species and a new subspecies (Lepidoptera, Erebidae, Arctiinae), Zootaxa 4658 (1), pp. 155-167 : 160

Cyana titovi Volynkin, Černý & Ivanova , sp. nov.

( Figs 5, 6 , 29, 30 , 39 )

urn:lsid:zoobank.org:act:4D9B45FE-C743-483A-99AF-EDC56939F7B6

Type material. Holotype ( Figs 5 , 29 ): ♂, “ VIII.2015, Central Vietnam, Da Nang Province, Ba Na Mt. , leg. Le Luong Thanh ”, slide AV2302 ♂ Volynkin (Coll. NHMUK).

Paratypes: 1 ♂, same data as in the holotype, slide AV2297 ♀ ( Coll. CAV) ; 1 ♂, 8 ♀, same locality and collec- tor, IX.2015, slides AV1703 ♂, Volynkin (Coll. CAV) ; 2 ♂, VIII.2016, Central Vietnam, Thua Thien-Hue Province, Annamite Mts., Bach Ma Mt. , 1400m, leg. Le Luong Thanh (Coll. CAV)

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Diagnosis. Forewing length is 14–14.5 mm in males (14.5 mm in the holotype) and 17.5 mm in females. Cyana titovi ( Figs 5, 6 ) is similar externally to C. aurantifascia ( Figs 7, 8 ), but differs clearly by its smaller size and smaller black spots on forewing. The male genital capsule of the new species ( Figs 29, 30 ) is similar to that of C. aurantifascia ( Figs 31, 32 ), but has slightly more convex costal margin of valva. The vesica of C. titovi differs from that of C. aurantifascia by the much smaller largest diverticulum, the broader 1 st distal diverticulum bearing a broader cluster of much more robust spinules, and the smaller 2 nd distal diverticulum. The female genitalia of C. titovi ( Fig. 39 ) can be distinguished from those of C. aurantifascia ( Fig. 40 ) by the slightly longer ductus bursae, the larger signum bursae, and the narrower and twisted distal membranous section of appendix bursae (that is broad and globular in C. aurantifascia ).

Distribution. Central Vietnam (Da Nang Province).

Etymology. The species name is dedicated to Dr. Sergey V. Titov (Pavlodar, Kazakhstan), an expert in Central Asian Noctuoidea and friend of senior and fourth authors of the present paper.

Figures

FIGURES 1–8. Cyana spp.: adults. 1, C. lada, holotype ♂, Vietnam (Coll. MWM/ZSM); 2, C. lada, paratype ♂, Vietnam (Coll. MWM/ZSM); 3, C. lada, paratype ♂, Vietnam (Coll. MWM/ZSM); 4, C. lada, paratype ♀, Vietnam (Coll. MWM/ZSM); 5, C. titovi, holotype ♂, Vietnam (©NHMUK); 6, C. titovi, paratype ♀, Vietnam (CAV); 7, C. aurantifascia, holotype ♂, Vietnam, (©NHMUK); 8, C. aurantifascia, paratype ♀, Vietnam (CAV).

FIGURES 29–32. Cyana spp.: male genitalia. 29, C. titovi, holotype, Vietnam, slide AV2302♂ Volynkin; 30, C. titovi, paratype, Vietnam, slide AV1703♂ Volynkin; 31, C. aurantifascia, holotype, Vietnam, slide AV2299♂ Volynkin; 32, C. aurantifascia, paratype, Vietnam, slide AV2300♂ Volynkin.

FIGURES 37–42. Cyana spp.: female genitalia. 37, C. lada, paratype, Vietnam, slide ZSM Arct. 103/2017♀ Volynkin; 38, C. gazella, N India, slide MWM 34493 Volynkin; 39, C. titovi, paratype, Vietnam, slide AV2297♀ Volynkin; 40, C. aurantifascia, paratype, Vietnam, slide AV2301♀ Volynkin; 41, C. sikkimensis, NE India, slide MWM 34428 Volynkin; 42, C. abiens, China, slide ZSM Arct. 83/2017♀ Volynkin.