Dasypolia (Tatsipolia) amoena, Chen & Pan & Volynkin & Saldaitis & Benedek & Zhou, 2025

Chen, Enyong, Pan, Zhaohui, Volynkin, Anton V., Saldaitis, Aidas, Benedek, Balázs & Zhou, Yonghong, 2025, On the taxonomy of the subgenera Tatsipolia, Chalapolia, and Kitapolia of the genus Dasypolia Guenée with the description of six new species from southern Xizang, China (Insecta, Lepidoptera, Noctuidae), ZooKeys 1244, pp. 249-280 : 249-280

Dasypolia (Tatsipolia) amoena sp. nov.

Figs 22–24 , 50 , 64

Type material.

Holotype (Figs 22 , 50 ): China • ♂, “ TU -00790 | Mira Mountain , Riduo | Township, Mozhugongka | County, Lhasa, Xizang | N29°45'0.58" | E92°18'50.82" | 26.8 [viii]. 2024 h [altitude] 4634.1 m (coll. [leg.:] | Chen Enyong) ” ( TU) . Paratypes (2 ♀♀, in TU). China • 1 ♀, same data as in holotype but 29°46'2.79"N, 92°19'15.75"E, 4702.3 m, unique ID: TU -00788 ; • 1 ♀, Mira Mountain , Gaxing Township, Gongbu Jiangda County, Linzhi City, Xizang, 29°51'1.09"N, 92°20'27.55"E, 27. ix. 2024, 4902.8 m (Chen Enyong leg.), unique ID: TU -00960 .

Diagnosis.

Dasypolia amoena sp. nov. is externally vaguely reminiscent of D. nivalis but can be readily distinguished by the serrulate male antenna (it is shortly bipectinate in D. nivalis ), the somewhat broader forewing with slightly more convex costal and anal margins, the bluish-grey forewing ground colour (vs brown or grey brown in D. nivalis ), the orange suffusion on the claviform, orbicular and reniform markings and the subterminal line, and the lack of the intense grey suffusion along the hindwing costal and outer margins, which is characteristic of D. nivalis . Additionally, the head and the thorax of the new species are pale grey with admixture of dark grey and ochreous hair-like scales whereas in D. nivalis they are more unicolourous dark brown. The male genital capsule of D. amoena sp. nov. is similar to D. diffusa sp. nov., D. luxuriosa sp. nov., D. ultramontana sp. nov. and D. nivalis but differs in the broader cucullus and the apically narrower harpe. The phallus of D. amoena sp. nov. is shorter and broader than in the similar species. The vesica configuration of D. amoena sp. nov. is most similar to D. ultramontana sp. nov. with its semiglobular ventral diverticulum but differs in the markedly smaller cornuti gathered into two more elongate clusters, which are more distant from each other than in the congener. Among species of the D. nivalis species group with known females, the female genitalia of D. luxuriosa sp. nov. are most similar to D. amoena sp. nov., but in the latter the medial, membranous section of the ductus bursae is longer, the sclerotised plates of the anterior gelatinous region of the ductus bursae are larger, and the corpus bursae is considerably shorter.

Description.

External morphology of adults (Figs 22–24 ). Forewing length 11.0 mm in male holotype and 14.0 mm in females. Female larger than male and with more elongate forewing, paler ground colour and more distinct and contrast pattern, and more intense orange suffusion on certain markings. Antenna shortly serrulate in male and filiform in female. Body pale grey with admixture of blackish scales. Forewing elongate with oblique tornus. Forewing ground colour grey with blackish suffusion. Pattern elements dark grey. Subbasal and antemedial lines irregularly sinuous. Costa with irregular blackish spots. Claviform dash elongate and protruding into medial area, suffused with orange. Orbicular marking small, elliptical with diffuse blackish margins, filled with pale grey in male and suffused with orange in female. Reniform marking pale grey with diffuse blackish margins and black dot-like core spot, in female intensely suffused with orange proximally and distally. Postmedial line thin, question mark-like curved, dentate on veins, suffused with pale grey along outer margin. Subterminal line irregular and diffuse, in female suffused with orange. Terminal line black, interrupted on veins. Forewing cilia pale grey with admixture of dark grey. Hindwing pale grey with dark grey suffusion, darker in male. Terminal line dark brownish-grey, thin. Discal spot elliptical and diffuse, broader in female. Hindwing cilia pale ochreous. Male genitalia (Fig. 50 ). Uncus elongate, distally tapered, and apically pointed. Tegumen with short and swollen, rounded penicular lobes. Vinculum as long as tegumen, heavily sclerotised, U-shaped. Valva lobular, somewhat shorter than annulus, with almost parallel margins. Costa narrow, distally dilated and reaching cucullus. Cucullus lobular, rounded, densely covered with robust setae. Editum thin and weakly sclerotised, stretching along costa and fused with it dorsally, bearing short triangular and apically rounded, ventrally directed distal ampulla originating at the ventral corner of cucullus and not protruding beyond the ventral margin of valvula. Valvula short and not protruding ventrally. Sacculus trapezoidal, broad (~ 3 / 4 of valva width). Clasper oblique, straight, apically dilated, with elongate clavate harpe well-protruding beyond dorsal margin of valva. Juxta trapezoidal, with short, triangular medio-dorsal process. Phallus broad with rounded coecum, somewhat dilated distally. Proximal section of vesica short and somewhat broader than phallus, with very short but broad, protrusion-like ventral diverticulum and two short longitudinal clusters of small spine-like cornuti dorsally and ventrally. Vesica ejaculatorius tubular and membranous, originating apically and directed distally. Female genitalia (Fig. 64 ). Ovipositor short, conical. Papilla analis elliptical, setose. Apophyses elongate and thin, proximally flattened and distally rod-like, more or less equal in length. Ostium bursae moderately broad, with membranous margins. Ductus bursae elongate, somewhat constricted medially and globular and gelatinous anteriorly. Medial sclerotised plate situated posteriorly, elliptical. Anterior gelatinous section of ductus bursae with two medio-lateral sclerotised plates of different sizes. Corpus bursae membranous, elongate pear-shaped. Appendix bursae vestigial, conical, situated ventrally at junction with ductus bursae.

Etymology.

The specific epithet is a Latin adjective meaning pleasant and refers to the beautiful external appearance of the new species.

Distribution.

The new species is currently known from two localities in southern Xizang, China.

Figures

Figures 21–28. Adults of Dasypolia (Tatsipolia) spp. Depositories of the specimens: 21. In ZSM; 22–28. In TU.

Figures 47–50. Male genitalia of Dasypolia (Tatsipolia) spp. Depositories of the specimens dissected: 47, 48, 50. In TU; 49. In ZSM.

Figures 59–66. Female genitalia of Dasypolia (Tatsipolia) spp. Depositories of the specimens dissected: 59, 60, 63–66. In TU; 61. In TAAHU; 62. In HNHM (photo by B. Tóth).