Guide riffle invertebrates Australian Wet Tropics streams

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10. Abdomen ending in two long tails; antennae long; gills occur as lateral abdominal processes (Eustheniidae) or as a tuft on posterior abdomen (Gripopterygidae) ................. stone-fly nymphs, Plecoptera (10a,b;Key 6) 10a. Plecoptera: Eustheniidae 10b. Plecoptera: Gripopterygidae − Abdomen ending in three processes (very short, or long) .............................................................................. 11 11. Tail processes filamentous; paired gills on sides of abdomen; tarsi with single claw ......................................... ………………………………………………………………...mayfly nymphs, Ephemeroptera (11a;Key 7) 11a. Ephemeroptera: Leptophlebiidae gills − Tail processes not filamentous; no gills on sides of abdomen; tarsi with two claws; mouthparts include extensible labium, often covering face ................ Dragonfly and damselfly nymphs, Odonata (11b,c;Key 5) 11b. Odonata: Aeshnidae 11c. Odonata: Amphypterygidae - 10 -
5. Larval Odonata (damselflies and dragonflies) (based on CSIRO 1991) 1. Body usually slender, bearing three leaf-like or sac-like tracheal gills attached to tip of abdomen (see 2a,b) .. ………………………………………………………………………………………..suborder Zygoptera …2 − Body usually stout, without external tracheal gills, but with three conspicuous substantial spine-like or triangular processes at tip of abdomen, forming anal ‘pyramid’ surrounding anus (see 4a,b) .......................... ………………………………………………………………………………………suborder Anisoptera …3 2. Caudal gills sac-like ..................................................................................................... Amphipterygidae (2a) − Caudal gills flattened, leaf-like ............................................................................................... Synlestidae (2b) 2a. Amphypterygidae 2b. Synlestidae sac-like gills leaf-like gills 3. Labium deeply concave, ladle-shaped; labial palps broadened (3c), forming mask in front of head when closed (3a, 3b); prementum bearing large setae ...............................................................................................4 3a. Concave labium retracted 3b. Labium extended 3c. Concave labium labial palp prementum bearing setae − Labium flat, lying beneath head when closed (3d, 3e); labial palps not broadened (3f); prementum without setae .................................................................................................................................................................5 3d. Flat labium retracted 3e. Labium extended 3f. Flat labium labial palp prementum - 11 -
Page 1 and 2: Guide to the riffle invertebrates o
Page 3 and 4: Contents Introduction .............
Page 5 and 6: Acknowledgments We thank those expe
Page 7 and 8: 8. Body soft and worm-like with num
Page 9 and 10: 3. Crustacea (shrimps etc.) (based
Page 11: 6. Mouthparts long and slender ....
Page 15 and 16: 6. Larval Plecoptera (stoneflies) (
Page 17 and 18: 4. Head prognathous; tail filaments
Page 19 and 20: 9. Larval Megaloptera (alderflies)
Page 21 and 22: 4. Labrum membranous; frontoclypeus
Page 23 and 24: 12. Middle leg with tibia and tarsu
Page 25 and 26: 11. Larval Diptera (true flies) (ba
Page 27 and 28: 12. Head capsule with some scleroti
Page 29 and 30: 3. Eyes completely divided into dis
Page 31 and 32: 12B. Larval Beetles 1. Antennae lon
Page 33 and 34: 9. Tenth abdominal segment with cur
Page 35 and 36: labral fans labrum macroinvertebrat
Page 37 and 38: REFERENCES CITED Cranston PS (1995)
Page 39 and 40: Clayton P and Pearson RG (2016). Ha
Page 41: Rosser Z and Pearson RG (1995). Res

Guide riffle invertebrates Australian Wet Tropics streams

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