Cidariplura chenyxi Zhang & Han

Zhang, Xin-Yu & Han, Hui-Lin, 2016, Two new species of the genera Cidariplura Butler, 1879 and Oxaenanus Swinhoe, 1900 from Yunnan, China (Lepidoptera, Erebidae, Herminiinae), Zootaxa 4103 (1), pp. 79-86 : 80

Cidariplura chenyxi Zhang & Han sp. nov. ( Figs 1, 2 , 7, 8, 9 )

Types. Holotype: male, China, Yunnan Province, 5 km N Lincang City, 6–7 ix 2008 (colls. H.L. Han, E. Liu), slide no. zxy-0082. Paratypes: 1 male, China, Yunnan Province, Puer City, Mojiang County, 18–19 ix 2008 (colls. H.L. Han, E. Liu), slide no. zxy-0100; 2 females, China, Yunnan Province, Lincang City, 6–7 ix 2008 (colls. H.L. Han, M.J. Qi), slide no. zxy-0081; China, Guizhou Province, Anshun City, 21 ix 2008 (colls. H.L. Han, E. Liu), slide no. zxy-0079.

Diagnosis. This species is externally close to C. butleri ( Fig. 3 ), but can be distinguished by the smaller wingspan; rather thin and smooth antemedial line; slightly straight postmedial line; rather distinct subterminal line; and the slightly straight, and rather dark postmedial line of hindwing. In the male genitalia the valva of C. chenyxi is bilaterally symmetrical, those of C. butleri ( Fig. 10 ) asymmetrical; the terminal part of valva is hastiform; sacculus process is long, finger-like in C. chenyxi ; while C. butleri the terminal part of the left valva is wave, narrow and pointed at the apex, the right terminal part is thick, with discal process at dorsal edge, sacculus process is short and finger-like on both sides. The aedeagus is curved on right angle with vesica in C. chenyxi , in C. butleri ( Fig. 11 ) it is curved on acute angle. In the female genitalia, C. chenyxi has narrow ductus bursae, ellipsoidal corpus bursae; the broadth, length and shape of the latter is like that of C. butleri ( Fig. 12 ).

Description. Adult ( Figs 1, 2 ). Wingspan 29–31 mm (holotype— 29 mm). Head dark brown to yellowish-brown. The antennae of male ciliate, those of female filiform. 1st segment of labial palpus in male long, slightly angled upwards, covered with smooth scales, 2nd segment bent backward to a right angle and extending to the thorax, 3rd segment long, with long hairs on the whole length of its side; in females, the 1st very short, 2nd longer, angled downwards, with forward-directed scales, 3rd very thin, as long as 2nd and angled upward. Forewing broad, dark brown, basal part diffuse black and distinctly darker than rest of the wing; costal margin straight and dark; antemedial line dark greyish-ochre, with black on both sides, and slightly oblique inwards; medial line indistinct, its traces being present only at dorsum region; postmedial line greyish-ochre, with black on both sides, and slightly oblique inwards; subterminal line black, wave, the anterior part slightly more conspicuous than remaining section; reniform spot small, oval, with black at inside and back-end; antemedial line area darker; termen slightly waved. Hindwing somewhat lighter than forewing, medial line indistinct, light dark brown at inner margin region; postmedial line greyish-brown, black outside and its posterior part cleart; discal spot obscure.

Male genitalia ( Figs 7, 8 ). Uncus strongly bucking at basal part, apically hooked, its middle part hairy, and ventral edge swollen. Tegumen unmodified. Valva slightly sclerotized, and bifurcate; costal process big, tooth-shaped and slightly sclerotized, distal half of valva sclerotized, the apical part acute lanciform, with distal brush of hairs; sacculus elongated, smooth; saccular process digitiform, sclerotized, covered with hairs. Juxta rhomboidal. Vinculum slender, belt-shaped. Saccus U-shaped. Aedeagus cylindrical, straight, coecum short, carina sclerotized. Vesica membranous, its medial part bearing a patch of small grains, ventrally and a patch of many moderate cornuti dorsally.

Female genitalia ( Fig. 9 ). Papillae anales conical, with short hairs. Apophyses posteriores longer than apophyses anteriores. Ostium bursae large, cup-like. Ductus bursae long, sclerotized. Corpus bursae ellipsoid, posteriorly wrinkled and covered with small spines, anteriorly smooth.

Distribution. ( Fig. 19 A). China (Yunnan: Lincang, Mojiang; Guizhou: Anshun).

Etymology. The species name is dedicated to Mr. Yixin Chen, the Noctuidae specialist of China.

Bionomics. The moths fly in September. The specimens were collected by light trap at the border of a deep valley with wooded vegetation ( Fig. 17 ).

Figures

FIGURES 1 – 6. (The scale is 1 cm) Cidariplura and Oxaenanus spp., adults. 1. Cidariplura chenyxi sp. nov., male, holotype; 2. C. chenyxi sp. nov., female, paratype; 3. C. butleri, female; 4. Oxaenanus yunnana sp. nov., male, holotype; 5. O. yunnana sp. nov., male, paratype; 6. O. brontesalis, male, after Holloway (2008).

FIGURES 7 – 12. Cidariplura spp., genitalia. 7 – 8. C. chenyxi sp. nov., male, holotype genit. prep. zxy- 0082 (holotype) (7 — armature; 8 — aedeagus); 9. C. chenyxi sp. nov., female, paratype, genit. prep. zxy- 0079; 10 – 11. C. butleri, male, China, Yunnan, prep. zxy- 0023; (10 — armature; 11 — aedeagus); 12. C. butleri, female, China, Yunnan, prep. zxy- 0062.

FIGURES 17 – 19. 17. Collecting site of Cidariplura chenyxi sp. nov. near Lincang (Prov. Yunnan): mixed broad-leaved and subtropical forest with patches of grassland and bushes of bamboo. 18. Collecting site of Oxaenanus yunnana sp. nov. near Puer (Prov. Yunnan): tropical rainforest with lianas. 19. Collecting map: A— Cidariplura chenyxi sp. nov.; B— Oxaenanus yunnana sp. nov.