Selected images for Pine-tree lappet (Dendrolimus pini )
Pine-tree lappet or pine moth is a European native, but is also known in the western part of Asia. It has not yet been detected in North America. The most likely method of introduction would be eggs and pupae hidden in the bark crevasses of unprocessed logs. Hosts are a wide range of conifers including fir, cedar, juniper, spruce, pine, Douglas-fir, and larch. From late-June through August, adult females lay eggs in groups of about 100. Females do not fly until after they have laid some of their eggs. The pinhead-sized (1/16 inch) eggs are blue-green when first deposited, later turning gray. Eggs hatch in about 14 days. Caterpillars first feed on egg shells, then on needles. First instar larvae can be wind dispersed as well as crawl significant distances to reach uninfested trees. One larva may consume up to 1,000 needles. When no needles are present, the bark of young shoots is also eaten. Mature larvae are 2-3 inches long with soft, gray to brownish hairs. Identifying features of the caterpillar include thick bands of steel blue and black hairs on the thorax and a black mark flanked by irregular white lines on the abdominal segments. After the first frost, caterpillars move to the litter on the forest floor to overwinter. The following spring, they return to the canopy to resume feeding. In June, yellow-brown to black cocoons marked with steel blue hairs start being formed in bark crevices and on needles and branches. Adults emerge in roughly 4 weeks. Identifying features of the 2 to 3 1/2 inch moth include gray-brown to brown forewings with a reddish brown lateral band and an irregular dark-brown to black stripe along the edges. Hind wings are red brown to gray brown. Males are usually darker than females.
| 15 Images | View Subjects Page | Send to Your Light Box |
|
|
|
|
||||
1220020 Pine-tree lappet Dendrolimus pini Larva(e) Hannes Lemme |
1260053 Pine-tree lappet Dendrolimus pini Adult(s) Hannes Lemme |
3943019 Pine-tree lappet Dendrolimus pini Larva(e) William M. Ciesla |
1258049 Pine-tree lappet Dendrolimus pini Larva(e) Stanislaw Kinelski |
1292010 Pine-tree lappet Dendrolimus pini Adult(s) Robert Dzwonkowski |
1260017 Pine-tree lappet Dendrolimus pini Adult(s) Hannes Lemme |
1220015 Pine-tree lappet Dendrolimus pini Cocoon(s) Hannes Lemme |
1260052 Pine-tree lappet Dendrolimus pini Adult(s) Hannes Lemme |
1220016 Pine-tree lappet Dendrolimus pini Cocoon(s) Hannes Lemme |
1220023 Pine-tree lappet Dendrolimus pini Egg(s) Hannes Lemme |
1220024 Pine-tree lappet Dendrolimus pini Egg(s) Hannes Lemme |
1258019 Pine-tree lappet Dendrolimus pini Adult(s) Stanislaw Kinelski |
1258047 Pine-tree lappet Dendrolimus pini Cocoon(s) Stanislaw Kinelski |
1258048 Pine-tree lappet Dendrolimus pini Egg(s) Stanislaw Kinelski |
1260018 Pine-tree lappet Dendrolimus pini Adult(s) Hannes Lemme |
