Donda hunana, Han & Behounek & Kononenko, 2020

Han, H. L., Behounek, G. & Kononenko, V. S., 2020, New species of Donda Moore, 1882 and new data on Pantheinae species. Revision of Pantheinae, contribution XIV (Lepidoptera, Noctuidae: Pantheinae), Zootaxa 4731 (2), pp. 279-286 : 280-283

Donda hunana sp. n.

( Figs 1, 2 , 9 , 14 )

Type material. Holotype: male, China, Prov. Hunan, Mt. Badagong , v.2018, Y.H. Wu, L. Qiu, W. Xiao, genitalia slide HHL-4046-1 . Paratypes: 1 male, 4 females, China, Prov. Hunan, Mt. Huping , vi.2018, M.W. Liao, H.N. Zhuang, genitalia slides HHL-4075-1 (male), HHL-4047-2 (female) .

Diagnosis. In the diagnosis we compare the new species with the externally similar Oriental Belciana biformis ( Walker, 1862) , the type species of Belciana ( Fig. 4 , 14, 16 ) and with Donda continentalis ( Figs 3 , 10 , 15 ), the only other Donda species known from China. Externally, D. hunana is diagnosed by pale green forewing colouration with a light bluish tint; pattern elements and pale-yellowish hindwing the new species resemble B. biformis ( Figs 4 , 13, 16 ). However, D. hunana differs from the B. biformis by the clearly expressed antemedial line, wide brown patches in subterminal and terminal fields and clear dark terminal band on hindwing.). D. hunana differs from described Donda species (including D. continentalis ) ( Fig. 3 ) by its paler overall wing colouration, quadrangular shape of subbasal fascia, clearly expressed antemedial line and broad brown subterminal and terminal fields with pale green patches around veins M 3 and Cu 1. In the male genitalia ( Fig. 9 ) the new species differs from known all Donda species (including D. continentalis ) ( Fig. 10 ) in the shape of the juxta (narrow, without central longitudinal gutter and lateral flaps); the shape of the valva (broader than in D. continentalis , not tapered apically, with moderate broad cucullus); the sacculus without long saccular extension; the central part of valva with a larger hook-like harpe; and the shape and armature of aedeagus and vesica (tubular, without medial diverticulum, with minute cornuti in the base of vesica in D. hunana vs tubular, with medial diverticulum and few strog cornuti in the base of vesica and patch of small cornuti on medial diverticulum in other described Donda species).

The female genitalia ( Fig. 14 ) of the new species differ from those of D. continentalis ( Fig. 15 ) by splitted with, lateral flaps shape of the antrum (vs unsplitted antrum in D. continentalis , straight ductus bursae, and shape of sclerotised patch of the ductus bursae, which is much llonger, but narrover than in D. continentalis .

Description. Adult ( Figs 1, 2 ). Wingspan of male 42–43 mm, female 46 mm. Head and basal segment of antennae covered with pale brownish scales; labial palps rather long, grey-yellowish, laterally grey-brownish; labial palps brown, 3rd segment of palps stick-like moderately long, about half or third of length of the 2nd, pale grey-brownish; tegulae brown, patagia salad-green, bordered with black, thorax salad-green; abdomen pale, greyish-salad-green, with abdominal crest; terminal segments of male abdomen pale-yellowish. Ground colour of forewing salad-green, wing pattern formed by three prominent brown patches in costal part of subbasal field, in subterminal and terminal area and in tornal angle; costal margin white; basal line as small black patch, subbasal fascia as almost quadrat black-brown patch reaching Cu- trunk and black dot in lateral margin of wing; antemedial line marked as thin blackish line; medial line marked as twin blackish patch above reniform and continues as thin indistinct transverse blackish line; reniform and orbicular marked as tin black dot or thin black vertical streak surrounded with white (in worn specimens they are not obvious); postmedial line distinct, black, with deep invagination on M 2 -Cu 1 area subterminal field brown, with salad-green patch in M 2 -Cu 1; terminal field brown, with traceable salad-green subterminal dashes; terminal line as row of blackish-brown dashes; fringes speckled, dark blackish brown and pale yellowish-brown. Hindwing pale yellowish-grey with broad somewhat fuscous terminal band, weak, but traceable medial line and small vertical blackish discal spot and whitish W-like anal mark outlined with blackish. Underside of forewing pale yellowish grey with darker medial and terminal area; hindwing with diffused discal spot and terminal band.

Male genitalia. ( Fig. 9 ). Uncus moderately long, straight, curved basally, hooked apically; subscaphium membranous; tegumen with broad shoulders and peniculus; paratergal sclerite slightly curved, flat; juxta rather narrow, arrow tip shaped, without flaps and gutter unlike to other Donda species; valva relatively long, straight and slightly curved in apical third, with broad clasper medially, abruptly constricted apically; costa strong; sacculus moderately long, clasper large, flat, plate-like, with large pointed apical extension; harpe moderately large, hooked apically; cucullus with prominent neck, slightly extended apically, bearing setae. Aedeagus straight; carina ribbon-like; vesica projecting dorsally, tubular, without diverticula, bearing subbasal patches of small cornuti dorsally and laterally.

Female genitalia. ( Fig. 14 ). Ovipositor moderately broad, quadrangular; apophyses anteriores and posteriores ones moderately long, almost equal in length; antrum well expressed, plate-like, split medially, with two lateral lobes and deep rounded cut; proximal part of ductus bursae membranous, medial part sclerotised and cervix bursae with a small sclerotised patch at juncture with corpus bursae; corpus bursae rounded, membranous.

Etymology. The species name refers to the discovery of the species in the Hunan Province, China.

Distribution. The species is known only from its type-locality, Mt. Badagong and Mt. Huping in Hunan province of China. Its occurs in zone of broad-leaved forest at elevation 1500–1800 m. Specimens have been recorded in late May and early June.

Figures

FIGURES 1–8. Pantheinae spp. Adults. 1, Donda hunana, male. China, Prov. Hunan. Holotype, genit. slide HHL-4046-1 (NEFU); 2, Donda hunana, female. China, Prov. Hunan. Paratype, genit. slide HHL-4047-2 (NEFU); 3, D. continentalis, male. Vietnam. Holotype, genit. slide 1892VK (ZFMK); 4, Belciana biformis, male. Indonesia, Sumatra,. genit. slide GB N4198 (ZSM); 5, Anabelcia thai, male. Thailand, genit. slide GB12160 (GB); 6, A. nepalensis, male. Nepal, genit. slide GB4161 (ZSM); 7, Xizanga mysterica, male. China, Prov. Yunnan. (NEFU); 8, Pantheaforma ihlei, male. China, Prov.Yunnan. (NEFU). The ruler above specimen image: 1 step = 1mm.

FIGURES 9–12. Pantheinae spp. Male genitalia. 9, Donda hunana. China, Prov. Hunan. Holotype, genit. slide HHL-4046-1 (NEFU); 10, D. continentalis. Vietnam. Holotype, genit. slide 1892VK (ZFMK); 11, Anabelcia thai. Thailand, genit. slide GB12160 (GB); 12, A. nepalensis. Nepal, genit. slide GB4161 (ZSM), aedeagus: North India, GB. 7413 (GB).

FIGURES 13–19. Pantheinae spp. Male and female genitalia. 13, Belciana biformis, male. Indonesia, Sumatra, genit. slide GB N4149 (ZSM); 14, Donda hunana. China, Prov. Hunan, female. Paratype, genit. slide HHL-4047-2 (NEFU); 15, D. continentalis, female. China. Paratype, genit. slide HHL-2450-2 (NEFU); 16, Belciana biformis, female. Indonesia, Sumatra, genit. slide GB/ZSM 4158; 17, Anabelcia thai, female. Thailand. Holotype, genit. slide GB7414 (ZSM); 18, A. nepalensis, female. Nepal, genit. slide GB4162 (ZSM).