S. Mahunka szerk.: Folia Entomologica Hungarica 55. (Budapest, 1994)

Figs 25-40. Comparison of four Hydroptila species of sparsa Curt, group. 25-28 = Hydroptila sparsa Curt. (25-26 = d Szederkény, May 8, 1983, light trap; 27-28 = ? Magyarszombatfa May 17, 1983, leg. S. Nógrádi); 29-32 = Hydroptila simulons Curt. (29-30 = d Káptalanfa, May 25 - June 6, 1989, light trap; 31-32 = Ç same data); 33-36 = Hydroptila angustata Mosely (33-34 = d

, 35-36 = Ç Szederkény, May 19, 1983, light trap); 37-40 = Hydroptila lotensis Mosely (37-38 = 6, 39-40 = ? Szőce, Szőce stream, May 22, 1984, leg. S. Nógrádi). 1st row (25, 29, 33, 37) = male, upper sheet of terminal, 2nd row (26, 30, 34, 38) = male, interior appendages, 3rd row (27, 31, 35, 39) = female terminal dorsal, 4th row (28, 32, 36, 40) = same, ventral, with the fungiform chitinous process