Male genital sac sclerites of Myrsidea quadrifasciata. 4–5: M. q. quadrifasciata ex Passer domesticus. 6–7: M. q. quadrifasciata ex Passer montanus. 8: M. q. argentina ex Agelaoides badius from Paraguay. 9–11: M. q. argentina according to Cicchino and Valim (2015). 12–13: M. q. serini according to Klockenhoff (1984a). 14: M. q. darwini according to Palma and Price (2010). 15: M. q. anoxanthi according to Price and Dalgleish (2007). 16: M. q. textoris ex Ploceus cucullatus. 17–18: M. q. queleae ex Quelea quelea.

 
 
  Part of: Sychra O, Kolencik S, Papousek I, Bilbija B, Literak I (2021) Myrsidea quadrifasciata (Phthiraptera: Amblycera) – a unique host generalist among highly host-specific chewing lice. Arthropod Systematics & Phylogeny 79: 379-400. https://doi.org/10.3897/asp.79.e63975