Agriculture Reference
In-Depth Information
ducts and some cause direct damage to field
crops.
EXAMPLE:
Atomaria linearis
(pygmy mangold
beetle).
17. Family COCCINELLIDAE (ladybirds)
(p. 137)
Small to medium-sized, usually convex, hemi-
spherical to oval beetles; head retracted into the
pronotum; eyes large; antennae terminating in a
3-segmented club; mandibles bidentate apically
(Fig.
70) (= predacious species - subfamily
Coccinellinae) or with more than two apical
teeth (= phytophagous species - subfamily
Epilachninae); legs short; elytra often black, red
or yellow, with a contrasting pattern of spots or
blotches; tarsal formula 4-4-4. Larvae very ac-
tive, long-legged, soft-bodied and often dark
grey or blue, marked with yellow or white
(Fig.
71); body usually setose, the setae often
16. Family BYTURIDAE
(p. 136)
A small group of small, hairy, phytophagous bee-
tles; antennae distinctly clubbed; tarsal formula
5-5-5, the tarsal claws distinctly toothed
(Fig.
68).
Larvae cylindrical, with well-developed thoracic
legs; anal segment with a ventral pseudopod and
a pair of dorsal processes
(Fig.
69).
EXAMPLE:
Byturus
tomentosus
(raspberry
beetle).
Fig. 70 Mandible of an adult ladybird - subfamily
Coccinellinae.
Fig.
68 Tarsal claw of a raspberry beetle - family
Byturidae.
Fig. 69 Larva of a raspberry beetle,
Byturus
tomentosus
- family Byturidae (xl2).
Fig. 71 Larva of a ladybird - subfamily
Coccinellinae (xlO).
