प्रारम्भिक कीट विज्ञान/२३

नेपाली विकिपुस्तकबाट, स्वतन्त्र पुस्तकालय
यसमा जानुहोस्: अन्वेषण, खोज्नुहोस्

NEUROPTERA – CHRYSOPIDAE NEUROPTERA Etymology : Neuro-nerve; ptera - wings. Common names : Lace wings, Ant lions, Mantispidflies, Owlflies.

Characters  They are soft bodied insects.  Antenna is filiform, with or without a terminal club.  Mouthparts are chewing type in adults.  Wings are equal, membranous with many cross veins.  They are held in a roof-like manner over the abdomen.  They are weak fliers  Larva is campodeiform with mandibulosuctorial mouthparts.  Pupa is exarate. Pupation takes place in a silken cocoon. Six out of eight Malpighian tubules are modified as silk glands. They spin the cocoons through anal spinnerets. Classification: This order is subdivided into two suborders viz.,Megaloptera and Planipennia.


1. CHRYSOPIDAE (Green lacewings, Goldeneyes, Stinkflies, Aphid lions)  Body is pale green in colour.  Eyes are golden yellow in colour.  Eggs are mounted on stalks to avoid predation and cannibalism.  Larvae preys on soft bodied insects, especially on aphids. It often carries a layer of debris on its body which provides camouflage.  They emit a stinking fluid when alarmed, from prothoracie stink gland.  They are mass multiplied and released in fields for controlling aphids.

2. MANTISPIDAE (Mantispid flies).  They resemble preying mantids.  Prothorax is elongated.  Forelegs are raptorial. Femur is armed with powerful spines.  Larva preys on spiderlings in the nests of ground spiders.  Development involves hypermetamorphosis.

3. MYRMELEONTIDAE (Ant lions)  Adult resembles a damselfly.  The antenna is long a clubbed.  They are weak fliers.  Grubs construct conical pits for capturing prey.  Larval mandibles are sickle-like with one or more internal teeth.  They have dolichasters (Lateral segmental processes fringed with setae).

4. ASCALAPHIDAE (Owlflies)  Adult resembles a dragonfly.  Antenna is long, conspicuous and clubbed  Hypostigmal cell is present in the wings  Larvae do not construct pits to capture the prey  Adults are aerial predators like dragonflies.