Figures & data
Figures 1–8. (1–4) Nemouridae: Nemourinae (Euholognatha): Ostrocerca albidipennis (Walker), (1) ventral view of tarsomeres 1–3 and pretarsus; (2) lateral view of tarsomeres 1 and 2; (3) ventral view of pretarsus; (4) dorsolateral view of pretarsus; (5) Notonemouridae (Euholognatha): Aphanicercopsis tabularis Barnard, ventrolateral view of tarsomeres 1 and 2. (6, 7) Leuctridae: Megaleuctrinae (Euholognatha): Megaleuctra complicata Claassen. (6) Ventrolateral view of tarsomeres 1 and 2; (7) ventrolateral view of tarsomere 3. (8) Leuctridae: Leuctrinae (Euholognatha): Leuctra grandis Banks, lateral view of tarsomeres 1–3. Abbreviations: ar, arolium; cl, claw; or, orbicula; sbp, setiform basipulvulus; ss, stout setae; t, tarsomeres; ut, unguitractor plate.
Figures 9–16. (9) Capniidae (Euholognatha): Isocapnia grandis Banks, ventrolateral view of tarsomeres 1–3 and pretarsus; (10) Taeniopterygidae: Taeniopteryginae (Euholognatha); Taeniopteryx maura (Pictet), ventrolateral view of tarsomeres 1–3 and pretarsus; (11–12) Scopuridae (Euholognatha): Scopura bihamulata Uchida, (11) ventrolateral view of tarsomeres 1–3 and pretarsus; (12) ventral view of tarsomere 1; (13–16) Scopuridae (Euholognatha): Scopura bihamulata Uchida, (13) ventral view of tarsomere 2; (14) ventral view of tarsomere 3; (15) ventral view of arolium; (16) dorsal view of orbicula. Abbreviations: ar, arolium; cl, claw; or, orbicula; t, tarsomeres; ut, unguitractor plate.
Figures 17–24. Pteronarcyidae (Systellognatha): Pteronarcella badia (Hagen). (17) Ventral view of tarsomeres 1–3 and pretarsus; (18) ventrolateral view of tarsomeres 1–2; (19) lateral view of tarsomere 2; (20) ventral view of tarsomere 3; (21) cuticular projections of tarsomere 2; (22) ventrolateral view of unguitractor and arolium; (23) setae and cuticular projections of arolium; (24) dorsolateral view of orbicula. Abbreviations: ar, arolium; cl, claw; cp, non-setal cuticlar projections; eu, euplantula; mb, median longitudinal unsclerotised band; or, orbicula; s, setae; t, tarsomeres; ut, unguitractor plate.
Figures 25–32. (25–27) Pteronarcyidae (Systellognatha): Pteronarcys californica Newport, (25) ventral view of tarsomeres 1–3 and pretarsus; (26) ventral view of tarsomere 2; (27) lateral view of tarsomere 2; (28) Styloperlidae (Systellognatha): Cerconychia livida Klapalek, ventral view of tarsomeres 1–3 and pretarsus; (29) Peltoperlidae; Peltoperlinae (Systellognatha): Yoraperla brevis (Banks), ventral view of tarsomeres 1–3; (30) Peltoperlidae: Peltoperlinae (Systellognatha): Tallaperla maria (Needham & Smith), ventral view of tarsomeres 1–3 and pretarsus; (31) Perlodidae: Perlodinae (Systellognatha): Megarcys signata (Hagen), ventral view of tarsomeres 1–3; (32) Perlidae; Perlinae (Systellognatha): Claassenia sabulosa (Banks), ventral view of tarsomeres 1–3. Abbreviations: ar, arolium; cl, claw; eu, euplantula; mb, median longitudinal unsclerotised band; t, tarsomeres; ut, unguitractor plate.
Figures 33–40. (33) Perlidae: Perlinae (Systellognatha): Neoperla osage Stark & Lentz, ventral view of tarsomeres 1–3; (34) Perlidae: Acroneurinae (Systellognatha): Perlesta adena Stark, ventral view of tarsomeres 1–3; (35) Chloroperlidae: Paraperlinae (Systellognatha): Paraperla frontalis (Banks), ventral view of tarsomeres 1–3 and pretarsus; (36) Chloroperlidae: Chloroperlinae (Systellognatha): Sweltsa lamba (Needham & Claassen), ventral view of tarsomeres 1–3 and pretarsus; (37, 38) Gripopterygidae: Antarctoperlinae (Gripopterygoidea): Antarctoperla michaelseni (Klapalek), (37) lateral view of tarsomeres 1–3; (38) ventrolateral view of pretarsus; (39, 40) Gripopterygidae: Gripopteryginae (Gripopterygoidea): Illiesoperla australis (Tillyard); (39) ventrolateral view of tarsomeres 1–3; (40) ventrolateral view of tarsomeres 1 and 2. Abbreviations: ar, arolium; cl, claw; eu, euplantula; mb, median longitudinal unsclerotised band; t, tarsomeres; ut, unguitractor plate.
Figures 41–48. (41, 42) Gripopterygidae: Gripopteryginae (Gripopterygoidea): Illiesoperla australis (Tillyard), (41) lateral view of tarsomeres 1 and 2; (42) ventrolateral view of tarsomere 3; (43, 44) Austroperlidae (Gripopterygoidea) Austroperla cyrene (Newman), (43) ventrolateral view of tarsus and pretarsus; (44) ventrolateral view of tarsomeres 1 and 2; (45) Austroperlidae (Gripopterygoidea): Austroperla cyrene (Newman), lateral view of tarsomeres 1 and 2; (46) Eustheniidae (Eusthenoidea): Stenoperla prasina (Newman), ventral view of tarsus and pretarsus; (47) Diamphipnoidae (Eusthenoidea): Diamphipnopsis samali Illies, ventral view of tarsus and pretarsus. (48) Embiidina, Oligotomidae: Oligotoma nigra Hagen, ventral view of tarsomeres 1 and 2. Abbreviations: ar, arolium; cl, claw; cp, non-setal cuticular projections; eu, euplantula; mb, median longitudinal unsclerotised band; t, tarsomeres.
Figures 49–52. (49) Evolution of tarsomeres 1 and 2 shape (L = 1, CI = 1.00, RI = 0.0). (50) Evolution of tarsomere 1 length relative to tarsomere 3 length (L = 4, CI = 0.50, RI = 0.70). (51) Evolution of tarsomere 2 length relative to tarsomere 3 length (L = 1, CI = 1.00, RI = 0.0). (52) Evolution of tarsomeres 1 and 2 plantar surfaces (L = 4, CI = 0.75, RI = 0.80).
Figures 53–56. (53) Evolution of the median longitudinal unsclerotised region of tarsomeres 1 and 2 (L = 1, CI = 1.00, RI = 0.0). (54) Evolution of the surface profile of the median longitudinal unsclerotised region of tarsomeres 1 and 2 (L = 4, CI = 1.00, RI = 0.0). (55) Evolution of tarsomere 3 plantar surface (L = 7, CI = 0.86, RI = 0.0). (56) Evolution of the setiform basipulvilli of the pretarsus (L = 1, CI = 1.00, RI = 1.00).
Figures 57–60. (57) Evolution of the claw setae (L = 2, CI = 0.50, RI = 0.67). (58) Evolution of the arolium width of the pretarsus (L = 1, CI = 1.00, RI = 0.0). (59) Evolution of the arolium setae of the pretarsus (L = 1, CI = 1.00, RI = 0.0). (60) Evolution of the orbicula setae of the pretarsus (L = 1, CI = 1.00, RI = 0.0).
