|
October - 2013 |
|
Dear Nature Lovers,
Greetings from oikos !
Owl Fly – The ‘ugly ducklings’ of insects.
The larva is quite ugly and grotesque. They are voracious predators in leaf litter and on trees. However, the adults are handsome and elegant strong-flying insects which are sometimes confused with dragonflies. |
Regards,
Ketaki & Manasi.
|
Owl Fly
ORDER : Neuroptera
The insect order Neuroptera, or net-winged insects, includes the lacewings, mantidflies, antlions, and their relatives.
Identification : Owlflies are readily distinguished from dragonflies because the later have short bristle-like antennae whereas the owlflies have large bulging eyes and long knobbed antennae. They are diurnal or crepuscular (active during twilight) predators of other flying insects.
Wings : Adult with two pair of transparent wings.
Mouth Parts : Adults have sucking mouthparts, Larva have chewing mouth parts.
Metamorphosis : Complete. Egg – Larva – Pupa - Adult.
Significance to Humans : They are excellent bio control agents. They feed on aphids, mites, whiteflies etc. |
Owlfly – Ascalaphus dicax
They are usually yellow in colour with dark patterns. Adults in this family are from medium to large size. They have long and clubbed pear-shaped antennae. Owlflies are good fliers although they spend most of their time resting on stem. Adults are predator, hunting insects in flight.
Owlfly lays dark brown eggs in single rows. There are 3 larval instars, the larvae living on the ground surface, beneath a dust covering which conceals all but the mandibles. The pupa emerges from the cocoon by bursting it rather than by dissolving or cutting an opening. There is one generation annually and overwintering is as active larvae.
The larvae hunt prey with their large jaw on ground and low vegetations. Their head is large with large mandibles projected forward for hunting small insects. |
Click on the image to enlarge
(1024 X 768 for Regular Square Screen)
(1366 X 768 for Widescreen)
(1280 X 1024 for Regular Square Screen)
(1920 X 1080 for HD Wide)
|
* Open calendar image by clicking on thumbnail, save it to computer and set it as desktop background for your computer monitor.
|
|
We at oikos have been working on ‘Forest restoration’ project in Koyna catchment since 2005. Positive results can now be seen on land where focus is to restore resources like soil, moisture first. Click Here for details
Project work was also covered by ABP maza on occasion of World Environment Day, 5th June.
Click Here to watch the video |
|
Please Note -
This Email is a part of awareness campaign initiated by oikos, Pune. Write to us for your valuable feedback.
oikos have been sending ‘Desktop calendars’ since January’06 with various themes,
which can be downloaded from website.
If you are not willing or not the correct recipient of this Email, kindly reply this mail with subject 'unsubscribe'. Thanking you for your precious time. |
Spread a word !! Forward to
nature lovers ! |
|
oikos for ecological services |
Ph. 020-25451875 |
Web: www.oikos.in
|