Palumbina macrodelta (Meyrick, 1918)

Ga-Eun Lee 1, Houhun Li, Taeman Han & Haechul Park, 2018, A taxonomic review of the genus Palumbina Rondani, 1876 (Lepidoptera, Gelechiidae, Thiotrichinae) from China, with descriptions of twelve new species, Zootaxa 4414 (1), pp. 1-73 : 17

The macrodelta -group

Diagnostic characters. This group is well defined by the combinations of the following characters: in male, the abdomen with coremata situated externally, the sub-rectangular uncus, the presence of the culcitula and the lateral processes of the vinculum as well as the sinuous or coiled aedeagus; in female, the sub-quadrate segment VIII, the tergum VIII divided into two sclerites, the presence of the colliculum and the signum with a hook-shaped process.

Remarks. The externally visible coremata were observed only in the macrodelta -group and P. diplobathra in this study.