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FIGS. 32a–b in Nymphs of the Northeastern Nearctic Species of Neoleptophlebia Kluge, 1997 and Paraleptophlebia Lestage, 1917 (Ephemeroptera: Leptophlebiidae)

FIGS. 32a–b: heads of Paraleptophlebia nymphs. 32a. dorsal view of the head of male nymph of P. debilis with bases of lateral ocelli widely separated, 32b. dorsal view of the head of male nymph of P. ontario with bases of lateral ocelli touching.

FIGS. 33a–c in Nymphs of the Northeastern Nearctic Species of Neoleptophlebia Kluge, 1997 and Paraleptophlebia Lestage, 1917 (Ephemeroptera: Leptophlebiidae)

FIGS. 33a–c: nymphs of Paraleptophlebia ontario. 33a. dorsal view of abdominal color pattern of male nymph from Pennsylvania, with slight dark gray shading in posterior half of tergites, 33b. dorsal view of abdominal color pattern of male nymph from Pennsylvania, USA with extensive dark gray shading in posterior half of tergites, 33c. dorsal view of abdominal color pattern of male nymph from Illinois USA, that has been preserved in ethanol for 84 years, some gray shading still evident on tergites, 33d. dorsal view of abdominal color pattern of female nymph from Pennsylvania, with slight dark gray shading in posterior half of tergites, shading often less extensive than on male nymphs.

FIGS. 27a–c in Nymphs of the Northeastern Nearctic Species of Neoleptophlebia Kluge, 1997 and Paraleptophlebia Lestage, 1917 (Ephemeroptera: Leptophlebiidae)

FIGS. 27a–c: maxillae of Paraleptophlebia nymphs. 27a. right maxilla of P. ontario (dorsal view), 27b. close-up of segment 1 of maxillary palp (ventral surface) of P. ontario, 27c. right maxilla of P. debilis (dorsal view), 27d. close-up of segment 1 of maxillary palp (ventral surface) of P. debilis.

FIGS. 30a–c in Nymphs of the Northeastern Nearctic Species of Neoleptophlebia Kluge, 1997 and Paraleptophlebia Lestage, 1917 (Ephemeroptera: Leptophlebiidae)

FIGS. 30a–c: nymphs of Paraleptophlebia debilis. 30a. dorsal view of abdominal color pattern of male nymph from Labrador, Canada, 30b. dorsal view of abdominal color pattern of female nymph from Labrador, Canada, 30c. dorsal view of abdominal color pattern of female nymph from VT, USA.

FIGS. 31a–b in Nymphs of the Northeastern Nearctic Species of Neoleptophlebia Kluge, 1997 and Paraleptophlebia Lestage, 1917 (Ephemeroptera: Leptophlebiidae)

FIGS. 31a–b: nymphs of Paraleptophlebia debilis. 31a. ventral view of abdominal color pattern of male and female nymphs from Labrador, Canada, arrow indicates dark lateral dashes along edges of sternites (extremely faint on some specimens), 31b. ventral view of abdominal color pattern of female nymph from VT, USA; arrow indicates similar dark lateral dashes but also areas of light brown lateral shading in depressions, lateral shading becomes more distinct on sternites VIII and IX.

FIGS. 28–29 in Nymphs of the Northeastern Nearctic Species of Neoleptophlebia Kluge, 1997 and Paraleptophlebia Lestage, 1917 (Ephemeroptera: Leptophlebiidae)

FIGS. 28–29: mouthparts and legs of Paraleptophlebia nymphs. 28a. right maxilla of P. moerens (dorsal view), 28b. close-up of segment 1 of maxillary palp (ventral surface) of P. moerens, 29a. foreleg of P. ontario nymphal exuviae from reared specimen with residual dark brown shading visible on femur from partial apical band, arrow indicates dark brown mark at base of tibia adjacent to joint with femur, some brown shading around mark extends along the sides of tibia, but doesn't completely encircle the leg segment, 29b. lateral view of legs of P. ontario nymph intact showing coloration, arrow indicates dark brown mark at apex of tibia adjacent to joint with femur.

FIGS. 26a–c in Nymphs of the Northeastern Nearctic Species of Neoleptophlebia Kluge, 1997 and Paraleptophlebia Lestage, 1917 (Ephemeroptera: Leptophlebiidae)

FIGS. 26a–c: mandibles of Paraleptophlebia nymphs. 26a. right mandible of P. debilis (ventral view) with arrow indicating few short, hair-like or bristle-like setae, 26b. right mandible of P. ontario (ventral view) with arrow indicating few short, hair-like or bristle-like setae, 26c. right mandible of P. praepedita (ventral view) with arrow indicating few short, hair-like or bristle-like setae.

FIGS. 25a–c in Nymphs of the Northeastern Nearctic Species of Neoleptophlebia Kluge, 1997 and Paraleptophlebia Lestage, 1917 (Ephemeroptera: Leptophlebiidae)

FIGS. 25a–c: forefemora of Paraleptophlebia nymphs. 25a. close-up of ventral edge of forefemur of P. ontario showing few short, hair-like setae and stout setae, 25b. close-up of ventral edge of forefemur of P. debilis showing few short, hair-like setae and stout setae, 25c close-up of ventral edge of forefemur of P. moerens showing few short, hair-like setae and stout setae.

FIGS. 22–24 in Nymphs of the Northeastern Nearctic Species of Neoleptophlebia Kluge, 1997 and Paraleptophlebia Lestage, 1917 (Ephemeroptera: Leptophlebiidae)

FIGS. 22–24: gills and legs of Paraleptophlebia nymphs. 22a. dorsal view of lateral gills of P. moerens with gill margins lacking long, hair-like setae, 22b. lateral view of gills of P. debilis with gill margins lacking long, hair-like setae, 23a dorsal view of legs of live P. moerens nymph showing typical brown color pattern without distinct bands, 23b. close-up of foreleg of preserved P. moerens nymph showing uniform brown color, pale areas visible on live nymphs are much less distinct after being preserved, 24a. lateral view of legs of P. debilis showing distinct bands on all leg segments, 24b. lateral view of legs of P. ontario showing partial brown band near apex of femora and dark brown mark on tibiae at joint with femora; dark brown on femora is often diffuse and usually does not encircle the segment.

FIGS. 19–21 a in Nymphs of the Northeastern Nearctic Species of Neoleptophlebia Kluge, 1997 and Paraleptophlebia Lestage, 1917 (Ephemeroptera: Leptophlebiidae)

FIGS. 19–21 a: mouth- and bodyparts of Paraleptophlebia volitans. 19. close-up of forefemur and tibia, white line and arrow indicate position and length of long, hair-like setae along ventral edge of femur, 19b. lateral view of legs with arrow indicating long, hair-like setae on ventral edge of femur, 20a. right mandible (ventral view), 20b. close-up of outer edge and ventral surface of right mandible, arrow indicates long, hair-like setae, 21a. right maxilla (dorsal view), 21b. close-up segment 1 of maxillary palp, arrow indicates group of several sharp setae on ventral surface.

FIGS. 1–4 in Nymphs of the Northeastern Nearctic Species of Neoleptophlebia Kluge, 1997 and Paraleptophlebia Lestage, 1917 (Ephemeroptera: Leptophlebiidae)

FIGS. 1–4: gills and abdominal tergites VIII–X of Neoleptophlebia and Paraleptophlebia nymphs. 1. N. adoptiva gill 4, 2. P. praepedita gill 4, 3a. N. assimilis tergites VIII–X, 3b P. praepedita tergites VIII–X, 3c. P. volitans tergites VIII–X, 3d. P. moerens tergites VIII–X, 4a. N. adoptiva tergites VIII–X, 4b. P. guttata tergites VIII–X.

FIGS. 5–8 in Nymphs of the Northeastern Nearctic Species of Neoleptophlebia Kluge, 1997 and Paraleptophlebia Lestage, 1917 (Ephemeroptera: Leptophlebiidae)

FIGS. 5–8: mouthparts and dorsal view of the head of Neoleptophlebia nymphs. 5a. right mandible (ventral view) of N. adoptiva, 5b Left mandible (ventral view) of N. adoptiva 6. dorsal view of head of N. adoptiva, 7a. right mandible (ventral view) of N. mollis, 7b-c. left mandible (ventral view) of two N. mollis specimens showing differences in position of outer incisors, 8. dorsal view of head of N. mollis.

FIGS. 17–18 in Nymphs of the Northeastern Nearctic Species of Neoleptophlebia Kluge, 1997 and Paraleptophlebia Lestage, 1917 (Ephemeroptera: Leptophlebiidae)

FIGS. 17–18: legs, and gills of Paraleptophlebia volitans. 17. dorsal view of abdominal gills with arrow indicating long, hairlike setae along edges of gill filaments, 18a. view of all legs showing presence of distinct bands, 18b close-up of foreleg (dorsal view) showing bands on each leg segment.

opennotspecifiedApr 2005View details →

FIGURES 14–18. Tikuna atramentum, nymph. 14 in Rediscovery of Choroterpes atramentum in Costa Rica, type species of Tikuna new genus (Ephemeroptera: Leptophlebiidae: Atalophlebiinae), and its role in the "Great American Interchange"

FIGURES 14–18. Tikuna atramentum, nymph. 14, nymph (median caudal filament broken); 15, foreclaw. 16–18, abdominal gills on: 16, segment 1; 17, segment 5; 18, segment 7.

FIGURES 27–29 in The Nymph and Additional Imaginal Description of Epeorus melli new combination from China (Ephemeroptera: Heptageniidae)

FIGURES 27–29. Epeorus melli (Ulmer, 1925). Male imago (photo): 27, body (abdominal terminal part excluded, showing body color pattern); 28, mid- and hind legs (showing the tarsal length); 29, genitalia (dorsal view).

FIGURES 25–26 in The Nymph and Additional Imaginal Description of Epeorus melli new combination from China (Ephemeroptera: Heptageniidae)

FIGURES 25–26. Epeorus melli (Ulmer, 1925). Male nymph (photo): 25, dorsal view; 26, ventral view (showing gill disc pattern).

FIGURES 20–24 in The Nymph and Additional Imaginal Description of Epeorus melli new combination from China (Ephemeroptera: Heptageniidae)

FIGURES 20–24. Epeorus melli (Ulmer, 1925). Male imago: 20, forewing; 21, hindwing; 22, genitalia (ventral view); 23. penes (dorsum on left and venter on right); Female imago: 24, sterna 7–9.

FIGURES 2–19 in The Nymph and Additional Imaginal Description of Epeorus melli new combination from China (Ephemeroptera: Heptageniidae)

FIGURES 2–19. Epeorus melli (Ulmer, 1925), mature nymph: 2, labrum; 3, left mandible; 4, right mandible; 5, ventral detail of incisors of right mandible; 6, maxilla; 7, hypopharynx (dorsum on left and venter on right); 8, labium (dorsum on left and venter on right); 9, foreleg; 10, midleg; 11, hindleg; 12, pectinate spines on femora; 13, foreclaw; 14, tergum 3; 15, ventral view of abdomen; 16, gill 1; 17, gill 2; 18, gill 7; 19, base of cerci.

opennotspecifiedJan 2018View details →

Figure 3 in The coconut pathosystem: weed hosts of nymphs of the American palm Cixiid Haplaxius crudus (Hemiptera: Fulgoroidea)

Figure 3. Variation of the number of nymphs associated per weed species in the low zone during May 2015–May 2016 in the coconut pathosystem in south-east Mexico.