Review of the genus Periacma Meyrick (Lepidoptera, Oecophoridae) from China, with descriptions of four new species Author Wang, S. X. Author Li, H. H. text Journal of Natural History 2006 2006-12-28 40 41 - 43 2371 2393 http://dx.doi.org/10.1080/00222930601088123 journal article 10.1080/00222930601088123 1464-5262 5231741 Periacma acutignatha Wang, Li & Liu, 2001 ( Figure 23 ) Periacma acutignatha Wang, Li & Liu, 2001: 275 . Wing expanse: 12.5–14.5 mm. Material examined: Holotype : „ , Neixiang ( 33 ° 02 9 N , 111 ° 50 9 E ), Henan Province , 650 m , 12 July 1998 , coll. Houhun Li. Paratypes : 4 „„ , 3 ♀♀ , 10–12 July 1998 , same locality data as holotype (1 „ , 1 ♀ , in IZCAS ). Distribution: China ( Henan ). Remarks: This species is related to P. erawanensis , but can be separated by the shape of the fore wing maculation, and the aedeagus with several sclerotized tooth-like distal spines in the male genitalia.