72

N. Chari et al.

Table 5.1 (continued)

S. No

Orders

Wing details

Examples

Remarks

Wings

11

Hymenoptera

Two pairs of thin

membranous wings. The

second pair is small.

Venation may be

reduced and stigma is

present

Bumblebees, Honey

bees, Wasps and

Ants (Social insects)

νh is above 100 Hz

12

Diptera

Two pairs of wings,

only forewings are

functional. Second pair

acts as halters (balancers

and gyroscopic action).

Halters are regarded as

vestigial organs (small)

House flies,

mosquitoes

νh is 200–1000 cps

(continued)