Figs. 25–41 in Guide To The Aquatic Heteroptera Of Singapore And Peninsular Malaysia: Vii. Family Helotrephidae

Figs. 25–41. Key characters of species of Limnotrephini. Female terminalia in ventral, male genitalia in lateral (left) aspect. (25, 29, 33) Subgenital plate of female, (34, 38) first valvulae of female, (26, 30, 35, 39) aedeagus of male, (27, 31, 36, 40) left paramere of male, (28, 32, 37, 41) right paramere of male. 25–28, Distotrephes zetteli, 29–32, Tiphotrephes indicus, 33–37, Idiotrephes chinai, 38–41, Idiotrephes asiaticus. Redrawn from Papá ek & Zettel, 2000, 2003 and Papá ek & Kovac, 2001b, respectively; some parts slightly modified.