Ypthima microconjuncta Lang, 2024

Ding, Cui-Zhen & Lang, Song-Yun, 2025, Notes on Ypthima persimilis Elwes & Edwards and its closely related species (Lepidoptera, Nymphalidae, Satyrinae), Zootaxa 5659 (1), pp. 117-126 : 124

Ypthima microconjuncta Lang, 2024

( Figs. 6 , 9F , 10F )

Ypthima microconjuncta Lang, 2024 , Atalanta 55 (1/2): 244, figs. 1, 4a, 5. TL: Shibing, Guizhou.

Material examined. 1 ♂, holotype, CHINA, Guizhou, Shibing, Yuntai-shan , 800 m, 1.VI.2024, leg. Song-yun Lang ( CMNH) ; 2 ♂♂, paratypes, CHINA, Guizhou, Shibing, Yuntai-shan , 800 m, 1-2.VI.2024, legs. Hou Jiang & Song-yun Lang ( LSY) ; 1 ♂, paratype, CHINA, Guizhou, Shibing, Yuntai-shan , 800 m, 9.VI.2023, leg. Hou Jiang ( LSY) .

Diagnosis. On Asian mainland, the appearance of Ypthima microconjuncta is very similar to Y. atra , and it can be distinguished from the latter by the combination of the following characters: 1) on the forewing upperside, the yellowish ring of the subapical ocellus is ill-defined, whereas it is clear in Y. atra ; 2) the ground colour of upperside is more greyish, whereas it is more brownish in Y. atra ; 3) the laminae of androconia ( Fig. 10F ) are very stout, whereas they are generally somewhat narrower and slightly elongated in Y. atra ( Fig. 10B ); 4) in lateral view, the dorsal lobe of valva ( Fig. 9F ) is triangular with an acute tip, whereas it is rounded and less produced in Y. atra ( Fig. 9B ).

Ypthima microconjuncta can be easily separated from its sibling species Y. angustipennis from Taiwan Island by the combination of the following characters: 1) on the forewing upperside, the subapical ocellus is oval with its yellowish ring blurry, whereas it is more rounded with its yellowish ring clear in Y. angustipennis ; 2) on the hindwing underside, the subapical ocelli in spaces 5 and 6 are relatively small, whereas they are obviously enlarged in Y. angustipennis ; 3) on the hindwing underside, the striae are thinner and denser; 4) the laminae of androconia ( Fig. 10F ) are very short and nearly triangular at basal two thirds, whereas those in Y. angustipennis are elongated and have the basal two thirds nearly squarish ( Fig. 10E ).

Distribution. China (E. Guizhou).

Figures

FIGURE 9. Male genitalia of Ypthima spp. A. Y. persimilis: a1. Yunnan, Menghai, SATY0620, LSY; a2. Yunnan, Lüchun, SATY1304, LSY; a3. Yunnan, Nanjian, SATY1305, LSY; a4. Yunnan, Lushui, SATY1307, LSY; a5. INDIA, Manipur, after Eliot (1967: f. 8); a6. BHUTAN, after Eliot (1967: f. 13); B. Y. atra: b1. Yunnan, Ximeng, SATY1071, LSY; b2. Hainan, Lingshui, SATY0623, LSY; b3. Guangxi, Jinxiu, SATY1303, LSY; b4. MYANMAR, N’mai Valley, after Eliot (1967: f. 18); b5. INDIA, Manipur, after Eliot (1967: f. 19); b6. Hainan, after Eliot (1967: f. 20); b7. “N.E. BURMA/Yunnan Exped.”, after Eliot (1967: f. 21); C. Y. taiwana stat. rev.: c1. “Y. formosana”, Taiwan, after Takáhashi (2000: f. 54); c2. “Y. formosana”, Taiwan, after Shirôzu & Shima (1979: Pl. 18: f. 2c); c3. “Y. atra taiwana”, Taiwan, Taidong, traced from Hsu et al. (2021: f. 488); c4. “Y. formosana”, Taiwan, after Eliot (1967: f. 16); c5. “Y. formosana”, Taiwan, after Eliot (1967: f. 17); D. Y. luxurians, Zhejiang, Qingyuan, SATY1187, LSY; E. Y. angustipennis: e1. Taiwan, after Takáhashi (2000: f. 55); e2. Taiwan, Taidong, traced from Hsu et al. (2021: f. 490); F. Y. microconjuncta, holotype, Guizhou, Shibing, SATY1308, CMNH.

FIGURE 10. Male androconia of Ypthima spp. A. Y. persimilis: a1. Yunnan, Menghai, ANDR0092, LSY; a2. Yunnan, Lüchun, ANDR0374, LSY; a3. ditto, ANDR0375, LSY; a4. ditto, ANDR0376, LSY; a5. ditto, ANDR0377, LSY; a6. MYANMAR, Kachin, after Uémura (2023b: f. 1m); B. Y. atra: b1. Guangxi, Jinxiu, ANDR0378, LSY; b2. Hainan, Lingshui, ANDR0102, LSY; b3. Hainan, after Uémura (2023b: f. 1k); b4. Yunnan, Ximeng, ANDR0263, LSY; b5. ditto, ANDR0379, LSY; b6. ditto, ANDR0380, LSY; b7. MYANMAR, Kachin, after Uémura (2023b: f. 1l); C. Y. taiwana stat. rev.: c1. “Y. atra taiwana”, Taiwan, after Uémura (2023b: f. 1j); c2. “Y. formosana”, Taiwan, after Takáhashi (2000: f. 51); c3. “Y. formosana”, Taiwan, after Shirôzu & Shima (1979: Pl. 52: f. 2); D. Y. luxurians: d1. Jiangxi, Mt. Wuyi, after Uémura (2023b: f. 1o); d2. Zhejiang, Qingyuan, ANDR0334, LSY; E. Y. angustipennis: e1. Taiwan, after Takáhashi (2000: f. 52); e2. Taiwan, after Uémura (2023b: f. 1p); F. Y. microconjuncta: f1. holotype, Guizhou, Shibing, ANDR0383, CMNH; f2. paratype, ditto, ANDR0384, LSY.

FIGURES 1–6. Ypthima spp., ♂, upperside (left), underside (right). 1. Y. persimilis, Yunnan, Lüchun, ANDR0376, LSY; 2. Y. atra, Yunnan, Ximeng, LSY; 3. Y. taiwana stat. rev., Taiwan, Nantou, ©ZMHU; 4. Y. luxurians, Zhejiang, Qingyuan, ANDR0334, SATY1187, LSY; 5. Y. angustipennis, Taiwan, Nantou, ©ZMHU; 6. Y. microconjuncta, paratype, Guizhou, Shibing, ANDR0384, SATY1312, LSY.