The crocosoma species-group

Diagnostic characters. Adult wingspan 19.5 to 35.0 mm. Moths of this species group can be distinguished by the orange yellow abdomen with a pair of black spots laterally on segments 3‒7; in the male genitalia, by the gnathos densely spined in caudal and oral parts, the elongate cucullus usually triangular, and the phallus without a cornutus; and in the female genitalia by the elongate corpus bursae lacking a signum or having a signum represented by a densely spined ridge.

Sattler (1967) proposed the crocosoma -group to acommodate three species: E. crocosoma Meyrick, 1914a, E. epitrocha (Meyrick, 1914b) and E. maculifera (Matsumura, 1931) . Kun (2001) added E. vietmiella Kun, 2001 and E. yeni Kun, 2001 to the group. Wei et al. (2007) transferred E. maculifera (Matsumura, 1931) to the penesella -group and added E. sphaerosticha (Meyrick, 1887) to the crocosoma -group. Wang & Wang (2012) added E. apispinata S. Wang, 2012 (Wang 2012a) to the group.

In this paper, we add E. antennipilosa Wang & Li, 2004 and E. susa Kun & Szabóky, 2000 to the group. We also describe three new species, and record E. vietmiella Kun, 2001 from China for the first time. The male of E. susa Kun & Szabóky, 2000 and the females of E. antennipilosa Wang & Li, 2004, E. vietmiella Kun, 2001 and E. yeni Kun, 2001 are also described for the first time, and E. crocosoma Meyrick, 1914 (Meyrick 1914a) is newly reported from Mainland China.