New species, new country distribution records, and a new generic combination of Afrotropical Acrocercopinae (Lepidoptera: Gracillariidae) Author Sruoga, Virginijus 0000-0002-5687-8299 Institute of Biosciences, Life Sciences Center, Vilnius University, Saulėtekio Ave. 7, LT- 10257 Vilnius, Lithuania virginijus. sruoga @ gmail. com; https: // orcid. org / 0000 - 0002 - 5687 - 8299 virginijus.sruoga@gmail.com Author Prins, Jurate De 0000-0001-7637-5755 Royal Belgian Institute of Natural Sciences, 1000 Brussels, Belgium & Australian National Insect Collection, Commonwealth Scientific and Industrial Research Organisation, Canberra, Australia jurate. deprins @ gmail. com; https: // orcid. org / 0000 - 0001 - 7637 - 5755 jurate.deprins@gmail.com text Zootaxa 2023 2023-05-15 5285 1 75 115 http://dx.doi.org/10.11646/zootaxa.5285.1.3 journal article 10.11646/zootaxa.5285.1.3 1175-5326 7935737 4CED7C23-4177-4C97-998B-F9CFC9C8A1E9 Dialectica trigonidota ( Vári, 1961 ) ( Figs 17A–E ) Acrocercops trigonidota ; Vári 1961: 151–152 ; pl. 5, fig. 5; pl. 97, fig. 5. Dialectica trigonidota ; De Prins & De Prins 2005: 175 . Material examined . 1♀ , Congo Dem. Rep., Bas-Congo , 320 m , Nat. Res. Luki-Mayumbe, 05°37’S 013°05’E , 23.v.2007 , leg. J. & W. De Prins. Gen. prep. VS521, in coll. RBINS . FIGURE 17. Dialectica trigonidota , female. A, adult, scale bar 1 mm; B, head, frontal view; C, caudal part of genitalia; D, corpus bursae; E, ostium region, gen. prep. VS521. Scale bar 0.1 mm. Diagnosis . Dialectica trigonidota is superficially similar to D. odontosema , known from South Africa and Kenya . However, it can be distinguished by the presence of a large white subapical spot. In female genitalia, D. trigonidota can be readily separated from other Afrotropical Dialectica species by two elongated spinose signa. Flight period . Probably two generations per year. Moth in South Africa was captured in mid-January ( Vári 1961 ), and in DRC in late May. Host plant(s) . Unknown. Distribution . South Africa ( Vári 1961 ); Democratic Republic of the Congo ( new record ). Remarks. The specimen from DRC slightly differs from the holotype in wing pattern by the second fascia being not so narrowed at costa. Since we found no significant differences in the female genitalia, we consider it conspecific with Dialectica trigonidota .