Galls are abnormal plant growths caused by insects, mites, nematodes, fungi, bacteria and viruses. They usually form during the accelerated growth period of new leaves, shoots and flowers in late spring. In this photo, you can see the brown leaf still attached to its branch and some of the leaf's veins. The gall was about the size of a golf ball and probably caused by a parasitic wasp, perhaps Amphibolips confluenta. After an egg has been laid in a leaf secretes a substance that causes the leaf to grow as a round papery home for the larva The larva feeds on the inside of the gall and emerges upon maturing into an adult wasp
圖片編號:
265233504
拍攝者:
Lindalombardo
點數下載
授權類型 | 尺寸 | 像素 | 格式 | 點數 | |
---|---|---|---|---|---|
標準授權 | XS | 480 x 320 | JPG | 13 | |
標準授權 | S | 800 x 533 | JPG | 15 | |
標準授權 | M | 2121 x 1414 | JPG | 18 | |
標準授權 | L | 3264 x 2176 | JPG | 20 | |
標準授權 | XL | 3464 x 2309 | JPG | 22 | |
標準授權 | MAX | 4242 x 2828 | JPG | 23 | |
標準授權 | TIFF | 4616 x 3077 | TIF | 39 | |
進階授權 | WEL | 4242 x 2828 | JPG | 88 | |
進階授權 | PEL | 4242 x 2828 | JPG | 88 | |
進階授權 | UEL | 4242 x 2828 | JPG | 88 |
XS
S
M
L
XL
MAX
TIFF
WEL
PEL
UEL
標準授權 | 480 x 320 px | JPG | 13 點 |
標準授權 | 800 x 533 px | JPG | 15 點 |
標準授權 | 2121 x 1414 px | JPG | 18 點 |
標準授權 | 3264 x 2176 px | JPG | 20 點 |
標準授權 | 3464 x 2309 px | JPG | 22 點 |
標準授權 | 4242 x 2828 px | JPG | 23 點 |
標準授權 | 4616 x 3077 px | TIF | 39 點 |
進階授權 | 4242 x 2828 px | JPG | 88 點 |
進階授權 | 4242 x 2828 px | JPG | 88 點 |
進階授權 | 4242 x 2828 px | JPG | 88 點 |