Lecture 5 Flashcards
What size do Coleoptera range from?
0.25mm (Nanosella fungi) to 10cm (Goliathus giganteus)
How many families of coleoptera are bioluminescent?
-2 families
-Fireflies (Lampyridae)
-Glowworms (Phengodidae)
What is the largest order in the animal kingdom?
- Coleoptera
- 40% of all insects
- 25% of all animals
What is the largest order of the insects?
- Coleoptera
- Beetles and weevils
-Over 300,000 species worldwide
-166 families
How many species of Coleoptera in Ireland?
-2154 species
Adult Coleoptera characteristics
- Wing cases= elytra
-Most have flying hind wings under the elytra
-Strong mandible mouthparts
Coleoptera Larvae
- Nearly always oligopodous (with normal thoracic legs only) and eucephalous (with well developed head capsule)
Are Coleoptera harmful or beneficial?
-Both
-Herbivores
-Predators
-Scavengers
-Parasites
-Pollinators
Carabidae
-Good for sustainable agriculture
-Larvae: Polyphagous soil living predators
Rovebeetles
-Family: Staphylinidae
Superfamily: Scarabaeoidea
- Stag beetles (Lucanidae)
- Dor beetles (Geotrupidae)
- Dung and scarab beetles (Scarabaeidae)
Cockchafer
-Melolontha melolontha (Scarabaeidae)
-Hairy
-Multiple red antennae
-Larvae: White in colour
Click-beetles
-Family: Elateridae
-Larvae= wireworms
-Can cause damage to base of wheat seedlings, cereal crops, and potato tubers
Be able to distinguish between bettle (coleoptera) and bug (hemiptera)
Slide 33
Ladybirds
- Larvae= Aphidophagous
- Family: Coccinellidae
- Feeds on aphids
Leaf Beetles
Family: Chrysomelidae
Colorado Beetle
- Leptinotarsa adecemlineata
- Cause potato crop defoliation
Fly Beetles
- Chrysolmelidae
- Subfamily = Halticinae
Cabbage Stem Flea Bettle (CSFB)
- Psylliodes chrysocephala
- Cause damage to winter OSR - Mine over winter in leaf petioles and stems
Blossom (pollen) beetles
- Meligethens spp.
- Family: Nitidulidae
- Adult blossom beetles feed in flowers damaging ovaries and larvae mine in flower buds = causing ‘blind’ seed pods and reduce seed set
Weevils
- Family: Curculionidae
Weevil characteristics
- Basal ‘scape’ segment
- ‘Geniculate’ (elbowed) antennae
- Biting/chewing mouthparts on end of elongate ‘snout’
Curculionidae
- Only beetle family with apodous (legless) plant-mining larvae