Locheutis, Meyrick, 1883

Wang, Shuxia & Tao, Zhulin, 2021, The genus Locheutis Meyrick (Lepidoptera: Oecophoridae) from the Palaearctic and Oriental regions, with descriptions of four new species, Zootaxa 4952 (3), pp. 561-570 : 562

Key to Oriental and Palaearctic species of Locheutis based on the male genitalia

1 Saccular part of valva narrowed distally................................................................... 2

- Saccular part of valva dilated distally..................................................................... 3

2 Costal part longer than saccular part; saccular part lacking a spine on dorsal margin, rounded at apex ( Fig. 1b )................................................................................................... L. tianmushana

- Costal part shorter than saccular part; saccular part with a spine on dorsal margin, pointed at apex ( Fig. 9 ).............................................................................................. L. pingxiangensis sp. nov.

3 Ventral margin of saccular part sinuate basally, concave inward medially......................................... 4

- Ventral margin of saccular part obliquely straight basally, slightly arched inward beyond middle ( Clarke 1963: pl. 151, fig. 2).......................................................................................... L. empolaea

4 Costal part of valva with basal 2/3 uniformly slender, distal 1/3 gradually narrowed toward apex...................... 5

- Costal part of valva gradually narrowed from base to before apex or distinctly narrowed from middle to pointed apex..... 7

5 Cornuti composed of two stout spines and a bundle of slender, easily shed long spines.............................. 6

- Cornuti composed of a bunch of short spines, costal part of valva slightly shorter than saccular part of valva ( Fig. 11 )........................................................................................ L. spinellosa sp. nov.

6 Costal part of valva sharply narrowed from preapex, produced to an apical spine ( Fig. 8 )............... L. jiangkouensis

- Costal part of valva gradually narrowed from distal 1/3 to narrowly rounded apex ( Fig. 10 )....... L. similempolaea sp. nov.

7 Costal part of valva gradually narrowed to before apex, bent ventrad near apex ( Clarke 1963: pl. 78, fig. 3)...... L. iridias

- Costal part of valva distinctly narrowed from middle to pointed apex, bent ventrad from beyond middle ( Fig. 7 )............................................................................................... L. elliptica sp. nov.

Figures

FIGURE 1. Locheutis tianmushana. a, adult; b, male genitalia, slide No. TZL19604; c, female genitalia, slide No. TZL20470. Scales: a = 2 mm; b = 0.2 mm; c = 0.5 mm.

FIGURES 7–11. Male genitalia of Locheutis spp. 7, L. elliptica sp. nov., holotype, slide No. ZMUC-NK097; 8, L. jiangkouensis, holotype, slide No. W01292; 9, L. pingxiangensis sp. nov., paratype, slide No. TZL19693, 9a, enlarged cornuti; 10, L. similempolaea sp. nov., holotype, slide No. TZL19807, 10a, enlarged cornuti, paratype, slide No. TZL19683; 11, L. spinellosa sp. nov., holotype, slide No. TZL19456. Scales: 7–11 = 0.2 mm; 9a = 0.05 mm; 10a = 0.1 mm.