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TRICHOPTERA (caddisflies).

Published byJean-Pierre Lachance Modified over 6 years ago

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Presentation on theme: "TRICHOPTERA (caddisflies)."— Presentation transcript:

1 TRICHOPTERA (caddisflies)

2 Hexapoda Insecta Pterygota Neoptera Holometabola 500 400 300 200 100 0
Silurian Devonian Carboniferous Permian Triassic Jurassic Cretaceous Entognatha Archaeognatha Hexapoda Zygentoma Ephemeroptera Insecta Odonata Plecoptera Embiodea Pterygota Zoraptera Dermaptera Grylloblattodea ? Mantophasmatodea Orthoptera Phasmatodea Blattaria Isoptera Mantodea Neoptera Psocoptera Phthiraptera Thysanoptera Hemiptera Coleoptera Rhaphidioptera Megaloptera Neuroptera Hymenoptera Holometabola Mecoptera Siphonaptera Diptera Strepsiptera Trichoptera Lepidoptera

3 Hexapod Orders Trichoptera Tricho - hair, ptera - wing
Number of Species 11,500 Common names caddisflies Typical habitats Larvae - aquatic, adults - aerial Distinguishing characteristics -wings with hairs Most larvae build cases Other features

4 Trichoptera adults

5 Trichoptera - Adults Haustellum - fused hypopharynx & labium

6 Trichoptera - Adults

7 Trichoptera Ecological Division of Larval Types 1. Retreat makers (net spinners) 2. Free living 3. Saddle case makers 4. Purse case makers 5. Tube case makers

8 Trichoptera Ecological Division of Larval Types 1. Retreat makers (net spinners) Hydropsychidae

9 Trichoptera Ecological Division of Larval Types 1. Retreat makers (net spinners) Hydropsychidae

10 Hydropsychidae – Sound production
Scraper File

11 Trichoptera Ecological Division of Larval Types 2. Free living Rhyacophilidae

12 Trichoptera Ecological Division of Larval Types 3. Saddle case makers

13 Trichoptera Ecological Division of Larval Types 4. Purse case makers Hydroptilidae

14 Trichoptera Ecological Division of Larval Types 5. Tube case makers

15 Trichoptera Ecological Division of Larval Types 5. Tube case makers

16 All larvae are apneustic
Respiratory adaptations All larvae are apneustic (no open spiracles)

17 Trichoptera - Phylogeny
Net spinners Free living Tortoise case makers Purse case makers Tube case makers

18 Respiratory adaptations
Abdominal Gills

19 Evoutionary change in Trichoptera
Evolved in cool streams Move to lentic water Cool streams Warm streams Lentic water Temporary ponds (100% of families) (95% of families) (50% of families) (17% of families) O2 Stress

20 Habitat Differentiation
Limnephilidae Leptoceridae Rhyacophilidae Hydropsychidae

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