Review of the genus Prolactistes (Heteroptera: Cydnidae), with two new combinations, first Indonesian records and a key to species of the genus Author Lis, Jerzy A. Institute of Biology, University of Opole, Oleska 22, 45 - 052 Opole, Poland; e-mails: cydnus @ uni. opole. pl; aniaj 88 @ gmail. com * corresponding author Author Zielińska, Anna Institute of Biology, University of Opole, Oleska 22, 45 - 052 Opole, Poland; e-mails: cydnus @ uni. opole. pl; aniaj 88 @ gmail. com * corresponding author text Acta Entomologica Musei Nationalis Pragae 2020 Acta. Ent. Mus. Natl. Pragae 2020-11-18 60 2 609 614 http://dx.doi.org/10.37520/aemnp.2020.042 journal article 10.37520/aemnp.2020.042 1804-6487 5177860 FCF2AB07-DC2B-484C-994C-43D1A2C93C6D Key to species of Prolactistes 1 Paraclypeus with a row of setigerous punctures including 10–11 peg-like setae; ocular index 3.20–3.40; ocellar index 4.4–4.8; pronotum about 1.6 times as broad as long; paramere as in Figs 8 and 11 ; second conjunctival appendage of the aedeagus strongly recurved apically as in Fig. 14 . ... P. jani (J. A. Lis, 1995 ) – Paraclypeus with a row of setigerous punctures including only 6–9 peg-like setae; ocular index 2.70–3.10; ocellar index 3.0–4.5; pronotum about 1.8 times as broad as long; paramere not as in Figs 8 nor 11; second conjunctival appendage of the aedeagus apically slightly recurved or almost rectangular ( Figs 15–16 ). ........ 2 2 Paramere as in Figs 9 and 12 ; second conjunctival appendage of the aedeagus apically slightly recurved ( Fig. 15 ); opening of the male genital capsule with elongat- ed sharpened tooth at each side of the inner margin ( Fig. 17 ); proctiger straight on its apical margin ( Fig. 19 ); spermathecal seminal receptacle rounded ( Figs 21–22 ). .................................. P. australis J. A. Lis, 2001 – Paramere as in Figs 10 and 13 ; second conjunctival appendage of the aedeagus apically almost rectangular ( Fig. 16 ); opening of the male genital capsule with a small rounded tooth at each side of the inner margin ( Fig. 18 ); proctiger slightly incised on its apical margin ( Fig. 20 ); spermathecal seminal receptacle elongated ( Figs 23–24 ). .............................. P. lisi ( Magnien, 2014 )