Agriculture Reference
In-Depth Information
Fig. 149
Forewing of a cimbicid sawfly - family
Cimbicidae.
Fig. 150
Forewing of a pine sawfly - family
Diprionidae.
Fig. 151
Antenna of an antler sawfly - family
Tenthredinidae.
Fig. 148
Antennae of sawflies: (a) family Argidae (3-
segmented); (b) family Cimbicidae (clavate); (c)
family Diprionidae - female (serrate); (d) family
Diprionidae - male (bipectinate).
cell below the pterostigma
(Fig. 150).
Larvae as-
sociated with conifers and typically gregarious;
those of several species are destructive forestry
pests and some are also associated with orna-
mental conifers.
EXAMPLES:
Diprion pini
(pine sawfly),
Neo-
diprion sertifer
(fox-coloured sawfly).
(Fig. 148b);
cross-vein 2r of forewing present
(Fig. 149).
Larvae fleshy and usually remaining
curled up when in repose; body often dusted with
whitish wax.
EXAMPLE:
Cimbex femoratus
7. Family TENTHREDINIDAE
(p. 247
et seq.
)
(large
birch
sawfly).
Small to medium-sized sawflies up to 20 mm
long; antennae usually with nine segments; an-
tennae simple, but projections present on basal-
most segments in the genus
Cladius
(Fig. 151);
thorax with a distinct postscutellum. A very
diverse group, including many parthenogenetic
species; eggs are usually laid in plant tissue, the
female using her saw-like ovipositor
(Fig. 152)
to
6. Family DIPRIONIDAE
Medium-sized, stout-bodied, slow-flying saw-
flies; antennae with more than nine segments,
and more or less serrate (in females)
(Fig. 148c)
or bipectinate (in males)
(Fig. 148d);
forewings
without cross-vein 2r, therefore, with an open