Calamotropha brevilinella (South, 1901)

(Figs 6, 32, 54)

Crambus brevilinellus South, 1901, in Leech and South: 394. TL: China (Sichuan). TD: NHMUK.

Calamotropha brevilinella (South): Bleszynski, 1961: 183.

Material examined. Guangdong: 2♁, Mt. Babao, Nanling, 1070 m, 23.VIII.2010, leg. SL Hao, slide No. KYN21296 ; Guangxi: 2♁, Yangmeiao Management Station, Rongshui County, Liuzhou City, 1240 m, 27.VII.2015, MQ Yang et al.; 21♁ 8♀, Huaping Reserve, Lingui, 789–1130 m, 1–8.VIII.2022, leg. H Sun et al.; 2♁, Yangmei'ao (25.21°N, 108.67°E), Mt. Jiuwan Reserve, Rongshui County, 1200 m, 27.VII.2022, leg. H Sun et al .; Guizhou: 2♁, Kuankuoshui (28.22°N, 107.16°E), Suiyang County, 1491 m, 8.VII.2019, leg. MR Xing et al., slide No. KYN21285; 1♁, Fangxiang Township (26.44°N, 108.27°E), Mt. Leigong, 910 m, 6.VIII.2018, leg. ML Zheng et al., slide No. KYN21292; 1♁, Kuankuoshui (28.23°N, 107.16°E), 1509 m, 29.VIII.2018, leg. ML Zheng et al., slide No. KYN21293; Hunan: 7♁ 8♀, Xiangshanjiang (26.43°N, 111.01°E), Mt. Shunhuang Reserve, Xinning County, 921 m, 7.VIII.2020, leg. H Sun et al., slide No. KYN21248♁ ; 2♁, Back hill of Hongyun Hotel (26.40°N, 111.33°E), Chengbu County, 491 m, 8.VIII.2020, leg. H Sun et al., slide Nos. KYN21250, KYN21381 ; 6♁, Sangjiangkou (26.30°N, 111.51°E), Mt. Jintong Reserve, Chengbu County, 1342 m, 10.VIII.2020, leg. H Sun et al., slide No. KYN21253 ; 1♁, Shunting (26.43°N, 111.01°E), Mt. Shunhuang Reserve, Xinning County, 997 m, 6.VIII.2020, leg. H Sun et al., slide No. KYN21254 ; 1♁, Houwangzhai (24.95°N, 112.94°E), Mt. Mang Reserve, Yizhang County, 1239 m, 26.VII.2020, leg. H Sun et al., slide No. KYN21257 ; Shaanxi: 1♁, Honghe Valley, Mei County, 917 m, 6.VII.2016, leg. H Wei et al., slide No. KYN21325 ; Sichuan: 1♁, Fengtong Village (30.57°N, 102.88°E), Baoxing, 1723 m, 27.VII.2021, leg. S Yu et al., slide No. KYN21201; 1♀, Shaoyaogou (30.80°N, 103.21°E), Anzihe Nature Reserve, 1556 m, 13.VII.2016, leg. Y Fei, slide No. KYN21204 .

Diagnosis. Adult (Fig. 6) wingspan 16.0–23.0 mm. This species is similar to C. brevistrigella (Caradja, 1932) and C. nigripunctella (Leech, 1889) superficially. Calamotropha brevilinella can be distinguished from C. brevistrigella by the forewing white between the medial and subterminal fasciae, in the male genitalia by the uncus shorter than the gnathos, the valva rounded at apex and the vesica with two spiniform cornuti (Figs 32, 32a); in C. brevistrigella, the forewing is ocherous between medimedial and subterminal fasciae, the uncus is longer than the gnathos, the distally bifurcated valva has two apical spines and the vesica has two rows of small spine-like cornuti (Fig. 33). Calamotropha brevilinella can be distinguished from C. nigripunctella by the gnathos without a process, and the phallus shorter than the valva; in C. nigripunctella, the gnathos has a triangular dorsal process at distal 1/3, and the phallus is longer than the valva (Fig. 41). The female genitalia is characterized by the heavily sclerotized, elongate, subaequilate antrum (Fig. 54).

Distribution. China (Guangdong, Guangxi, Guizhou, Hubei, Hunan, Shaanxi, Sichuan).

Variations. The uncus is usually obtuse at apex, but in some specimens it is bifurcated at apex (Fig. 32a).