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Fig. 1 in The Mongolian Species Of Isoperlinae (Plecoptera: Perlodidae)

Fig. 1. Isoperla lunigera (KLAPÁLEK). a = head and pronotum, b = female sternite 8, c = dissected sternites 8 and 9 in dorsal view, showing genital pouch, receptacle, and accessory glands; d = detail of genital pouch and receptacle, e = egg, f = detail of collar indicating chorion thickness and inner parts

Fig. 8 in The Mongolian Species Of Isoperlinae (Plecoptera: Perlodidae)

Fig. 8. Isoperla potanini (KLAPÁLEK): a = head and prothorax, b = hind leg, c, d = middle portion of cercus, e = male abdominal tip, ventral view, f = the same, dorsal view; g = cleared penis membrane, details of armatures all at the same magnification but not to scale, h = female abdominal tip, ventral

Fig. 10. Isoperla mongolica ZHILTZOVA. a in The Mongolian Species Of Isoperlinae (Plecoptera: Perlodidae)

Fig. 10. Isoperla mongolica ZHILTZOVA. a = adult head and prothorax, b = lateral view of male abdominal tip with folded penis in natural position; arrows and letters identify directions of views shown in Figs c1–3. c1-c3 = folded penis in three different views (inset C1 enlarged); compare Fig. 10b for directions, d = egg, lateral view. e = combined lateral views and optical sections through ante-

Fig. 7 in The Mongolian Species Of Isoperlinae (Plecoptera: Perlodidae)

Fig. 7. Isoperla asiatica RAUŠER. a = adult head and prothorax, b = hind leg, c = lateral view of male abdominal tip with everted penis; d, e, distal cercus segments with single large ventro-apical seta; f, cleared dissected penis with enlarged details of spicules, the frazzled spicules on the swelling being

Plate XXI, Figs I.1–I.6 – Type I (Spain, Cantabrian Cordillera, Palencia province, Río Carrión, Triollo, 1300 m). I.1, nymph, head and pronotum; I.2, tergites of macropterous ♂ nymph, dorsal view; I.3, mediodorsal setation on tergites of nymph, lateral view; I.4, femora of nymph; I.5, paraprocts of nymph; I.6, cerci of nymph, mediodorsal setation, lateral view. in Steps towards a revision of the Perla bipunctata Pictet, 1833 species complex (Plecoptera: Perlidae)

Plate XXI, Figs I.1–I.6 – Type I (Spain, Cantabrian Cordillera, Palencia province, Río Carrión, Triollo, 1300 m). I.1, nymph, head and pronotum; I.2, tergites of macropterous ♂ nymph, dorsal view; I.3, mediodorsal setation on tergites of nymph, lateral view; I.4, femora of nymph; I.5, paraprocts of nymph; I.6, cerci of nymph, mediodorsal setation, lateral view.

Plate XXV, Fig. M.1 – River Cold Sense, near Zollhaus (FR), Switzerland, late March. Rare example of type A and type B in near syntopy. Black arrow: nymphal biotope of type A; white arrow: of type B. in Steps towards a revision of the Perla bipunctata Pictet, 1833 species complex (Plecoptera: Perlidae)

Plate XXV, Fig. M.1 – River Cold Sense, near Zollhaus (FR), Switzerland, late March. Rare example of type A and type B in near syntopy. Black arrow: nymphal biotope of type A; white arrow: of type B.

Plate XXIII, Figs K.1–K.9 – Type K (Morocco, High Atlas, M'Goun Massif). K.1, adult ♂b, sclerotized apex of aedeagus; K.2, brachypterous adult ♂b, mesal field with sensilla; K.3, adult ♂b, hemitergal lobes, lateral view; K.4, pointed paraprocts of nymph, ventral view; K.5, cerci of nymph, ¾ lateral view; K.6, tergites of nymph, dorsal view; K.7, head, pronotum and mesonotum of macropterous♀ nymph; K.8, adult ♂b, head and pronotum; K.9, adult ♂b, sclerotized apex of aedeagus. in Steps towards a revision of the Perla bipunctata Pictet, 1833 species complex (Plecoptera: Perlidae)

Plate XXIII, Figs K.1–K.9 – Type K (Morocco, High Atlas, M'Goun Massif). K.1, adult ♂b, sclerotized apex of aedeagus; K.2, brachypterous adult ♂b, mesal field with sensilla; K.3, adult ♂b, hemitergal lobes, lateral view; K.4, pointed paraprocts of nymph, ventral view; K.5, cerci of nymph, ¾ lateral view; K.6, tergites of nymph, dorsal view; K.7, head, pronotum and mesonotum of macropterous♀ nymph; K.8, adult ♂b, head and pronotum; K.9, adult ♂b, sclerotized apex of aedeagus.

Plate XX, Figs H.1–H.6 – Type H in Steps towards a revision of the Perla bipunctata Pictet, 1833 species complex (Plecoptera: Perlidae)

Plate XX, Figs H.1–H.6 – Type H (Spain, Cantabrian Cordillera, Asturias). H.1, metanotum and tergites of ♂b; H.2, ♀ macropterous nymph, head, pronotum, mesonotum and metanotum; H.3, femora of nymph; H.4, paraprocts of nymph; H.5, cerci of nymph; H.6, cerci of nymph.

Plate XIII, Figs E.10–E.15 – Type E (Pyrenees). E.10, head and pronotum of nymph; E.11, pronotum of nymph; E.12, tergites of nymph, dorsal view; E.13, marks on the femora of leg of nymph; E.14, basal section of cerci of nymph; E.15, paraprocts of nymph, ventral view. in Steps towards a revision of the Perla bipunctata Pictet, 1833 species complex (Plecoptera: Perlidae)

Plate XIII, Figs E.10–E.15 – Type E (Pyrenees). E.10, head and pronotum of nymph; E.11, pronotum of nymph; E.12, tergites of nymph, dorsal view; E.13, marks on the femora of leg of nymph; E.14, basal section of cerci of nymph; E.15, paraprocts of nymph, ventral view.

Plate X, Figs D.1–D.6 – Type D in Steps towards a revision of the Perla bipunctata Pictet, 1833 species complex (Plecoptera: Perlidae)

Plate X, Figs D.1–D.6 – Type D (British-Irish Isles). D.1, adult ♂b, aedeagus (Ireland); D.2, adult ♂b, aedeagus and aedeagal tube; D.3, adult ♂b, mesal field with sensilla; D.4, adult ♂b, hemitergal lobes, dorsal view; D.5, head and pronotum of adult ♀ (Scotland); D.6, head and pronotum of adult ♀ (Ireland).

Plate IX, Figs C.13–C.18 – Type C in Steps towards a revision of the Perla bipunctata Pictet, 1833 species complex (Plecoptera: Perlidae)

Plate IX, Figs C.13–C.18 – Type C (nymphs, Nure, Rivers Aare and Emme). C.13, head and pronotum of nymph (Nure); C.14, mediodorsal setation on tergites, lateral view (Nure); C.15, paraprocts, ventral view (Aare); C.16, head and pronotum of nymph (Aare); C.17, oval markings on femora (Emme); C.18, sclerotized apex of aedeagus of Perla bipunctata, from Aubert 1949: 225, his Fig. 5.

Plate VI, Figs B.19–B.24 – Type B in Steps towards a revision of the Perla bipunctata Pictet, 1833 species complex (Plecoptera: Perlidae)

Plate VI, Figs B.19–B.24 – Type B (nymphs). B.19, markings on tergites of nymph (Drau); B.20, markings on tergites of nymph (Nure); B.21, markings on the femora of legs, dorsal view (Sense); B.22, head and pronotum of nymph (Valserine); B.23, head, pronotum, mesonotum, metanotum and first abdominal tergites of nymph (Sense); B.24, paraprocts of nymph, ventral view (Staffora).

Plate IV, Figs B.1–B.9 – Type B in Steps towards a revision of the Perla bipunctata Pictet, 1833 species complex (Plecoptera: Perlidae)

Plate IV, Figs B.1–B.9 – Type B (Italian Alps and Apennines). B.1, sclerotized apex of aedeagus of an adult ♂ (Nure); B.2, sclerotized apex of aedeagus of an adult ♂ (Stura di Demonte); B.3, sclerotized apex of aedeagus of an adult ♂ (Sesia); B.4, sclerotized apex of everted aedeagus of an adult ♂ (Tanaro); B.5, hemitergal lobes, mesal field with sensilla and sclerotized apex of everted aedeagus of an adult ♂ (Tanaro); B.6, aedeagal tube of adult ♂, in lateral view; B.7, aedeagal tube and hemitergal lobes of adult ♂, in lateral view; B.8, hemitergal lobes of adult ♂, in lateral view; B.9, adult ♂, hemitergal lobes and mesal field with sensilla.

Plate XII, Figs E.1–E.9 – Type E (Pyrenees). E.1, adult ♂, head and pronotum; E.2, adult ♂, ocelli with large black rim; E.3, adult ♂, aedeagus (specimen from Spain); E.4, adult ♂, aedeagal tube (specimen from France); E.5, adult ♂, short setae on aedeagal tube; E.6, adult ♂, hemitergal lobes, dorsal view and mesal field with sensilla; E.7, adult ♂, hemitergal lobes, dorsal view and mesal field with sensilla; E.8, adult ♂, hemitergal lobes, lateral view; E.9, adult ♀, subgenital plate. in Steps towards a revision of the Perla bipunctata Pictet, 1833 species complex (Plecoptera: Perlidae)

Plate XII, Figs E.1–E.9 – Type E (Pyrenees). E.1, adult ♂, head and pronotum; E.2, adult ♂, ocelli with large black rim; E.3, adult ♂, aedeagus (specimen from Spain); E.4, adult ♂, aedeagal tube (specimen from France); E.5, adult ♂, short setae on aedeagal tube; E.6, adult ♂, hemitergal lobes, dorsal view and mesal field with sensilla; E.7, adult ♂, hemitergal lobes, dorsal view and mesal field with sensilla; E.8, adult ♂, hemitergal lobes, lateral view; E.9, adult ♀, subgenital plate.

Plate III, Figs A.16–A.21 – Type A (French and Swiss Alps). A.16, head and pronotum of nymph (Swiss Alps); A.17, markings on tergites of nymph (Gryonne valley); A.18, markings on tergites of nymph (Sense); A.19, markings on the femora of legs, dorsal view (Gryonne Valley); A.20, sclerotized apex of extracted aedeagus of an adult ♂ (Vercors); A.21, sclerotized apex of aedeagus of Perla grandis, from Aubert 1949: 225, his Fig. 4. in Steps towards a revision of the Perla bipunctata Pictet, 1833 species complex (Plecoptera: Perlidae)

Plate III, Figs A.16–A.21 – Type A (French and Swiss Alps). A.16, head and pronotum of nymph (Swiss Alps); A.17, markings on tergites of nymph (Gryonne valley); A.18, markings on tergites of nymph (Sense); A.19, markings on the femora of legs, dorsal view (Gryonne Valley); A.20, sclerotized apex of extracted aedeagus of an adult ♂ (Vercors); A.21, sclerotized apex of aedeagus of Perla grandis, from Aubert 1949: 225, his Fig. 4.

Plate I, Figs A.1–A.9 – Type A in Steps towards a revision of the Perla bipunctata Pictet, 1833 species complex (Plecoptera: Perlidae)

Plate I, Figs A.1–A.9 – Type A (Italian Alps and Apennines). A.1, hemitergal lobes, mesal field with sensilla and sclerotized apex of everted aedeagus of an adult ♂ (Soana); A.2, sclerotized apex of everted aedeagus of an adult ♂ (Staffora); A.3, sclerotized apex of extracted aedeagus of an adult ♂ (Stura di Ala); A.4, sclerotized apex of everted aedeagus of an adult ♂ (Soana); A.5, aedeagal tube of adult ♂; A.6, aedeagal tube and hemitergal lobes of adult ♂; A.7, adult ♂, hemitergal lobes and mesal field with sensilla (Southern Apennines); A.8, sclerotized apex of extracted aedeagus of an adult ♂ (Southern Apennines); A.9, adult ♂, hemitergal lobes and mesal field with sensilla, dorsal view (Stura di Demonte).

Plate II, Figs A.10–A.15 – Type A in Steps towards a revision of the Perla bipunctata Pictet, 1833 species complex (Plecoptera: Perlidae)

Plate II, Figs A.10–A.15 – Type A (male and female adults, nymphs). A.10, adult ♂, hemitergal lobes, lateral view (Southern Apennines); A.11, head and pronotum of an adult ♂ (Stura di Demonte); A.12, subgenital plate of adult ♀ (Stura di Demonte); A.13, subgenital plate of adult ♀ (Haute-Savoie); A.14, basal section of cerci of nymph (Staffora); A.15, basal section of cerci of nymph (Gryonne valley).

Plate VIII, Figs C.7–C.12 – Type C (nymphs, Rivers Nure, Aare and Emme). C.7, basal section of cerci of nymph, lateral view (Emme); C.8, markings on tergites of nymph (Nure); C.9, head, pro-, meso- and metanotum of nymph (Aare); C.10, basal section of cerci of nymph (Aare); C.11, head and pronotum of nymph (Aare); C.12, markings on tergites of nymph (Aare). in Steps towards a revision of the Perla bipunctata Pictet, 1833 species complex (Plecoptera: Perlidae)

Plate VIII, Figs C.7–C.12 – Type C (nymphs, Rivers Nure, Aare and Emme). C.7, basal section of cerci of nymph, lateral view (Emme); C.8, markings on tergites of nymph (Nure); C.9, head, pro-, meso- and metanotum of nymph (Aare); C.10, basal section of cerci of nymph (Aare); C.11, head and pronotum of nymph (Aare); C.12, markings on tergites of nymph (Aare).

Plate V, Figs B.10–B.18 – Type B in Steps towards a revision of the Perla bipunctata Pictet, 1833 species complex (Plecoptera: Perlidae)

Plate V, Figs B.10–B.18 – Type B (adults and nymphs). B.10, sclerotized apex of aedeagus of an adult ♂ (Sense); B.11, sclerotized apex of aedeagus of an adult ♂ (Valserine); B.12, sclerotized apex of aedeagus of an adult ♂ (Drau); B.13, head and pronotum of an adult ♂ (Sense); B.14, subgenital plate of adult ♀; B.15, habitus of adult (Staffora; photo by Carlalberto Ravizza); B.16, basal section of cerci of nymph having been preserved in ethanol for nearly 50 years; B.17, basal mediodorsal setation on cerci of nymph (Valserine); B.18, markings on tergites of nymph (Valserine).

Plate VII, Figs C.1–C.6 – Type C (Italy, River Nure). C.1, adult ♂, sclerotized apex of aedeagus, dorso-caudal view; C.2, adult ♂, aedeagus and aedeagal tube; C.3, adult ♂, hemitergal lobes and mesal field with sensilla; C.4, adult ♂, hemitergal lobes, lateral view; C.5, head and pronotum of, adult ♂; C.6, subgenital plate of adult ♀. in Steps towards a revision of the Perla bipunctata Pictet, 1833 species complex (Plecoptera: Perlidae)

Plate VII, Figs C.1–C.6 – Type C (Italy, River Nure). C.1, adult ♂, sclerotized apex of aedeagus, dorso-caudal view; C.2, adult ♂, aedeagus and aedeagal tube; C.3, adult ♂, hemitergal lobes and mesal field with sensilla; C.4, adult ♂, hemitergal lobes, lateral view; C.5, head and pronotum of, adult ♂; C.6, subgenital plate of adult ♀.