Environmental Engineering Reference
In-Depth Information
Hemiptera
03. Front tarsi consisting of a single
spatulate segment
Corixidae
Front tarsi of usual form
04
This order includes aquatic bugs and lives through-
out of their life cycle inside the waterbody, and
they are placed under the series Hydrocorisae,
while semiaquatic bugs are dwelling on the sur-
face of waterbody and belong to the series
Amphibicorisae. In spite of 80 genera and 275
species accommodated in 16 major families of
aquatic and semiaquatic Hemiptera known from
India (Thirumalai
2002
), very little information on
water bugs of Andhra Pradesh is available. A lim-
ited number of studies have also been carried out
on general entomofauna of some specifi c wetlands
from taxo-ecological viewpoints which include
the work of Bhattacharya (
2000
), Ramakrishna
(
2000
), Ghosh (
1996
), Bal and Basu (
1994b
) and
Tonapi (
1959
), Deepa and Rao (
2007
,
2010
,
2011
) Deepa (
2010
), Deepa et al. (
2010
), Fabricius
(
1775
), and Vazirani (
1969a
,
b
,
c
). Heteroptera are
hemimetabolous insects, typically developing via
a series of fi ve nymphal instars. The body consists
of three distinct parts (although the head and tho-
rax are closely adjoined in Pleidae and
Helotrephidae), with mouthparts specialized for
piercing and sucking (except in the Corixidae).
04. Front coxae inserted at the hind
margin of short prosternum, legs
modifi ed for swimming
05
Front coxae inserted at or near
the front margin of the
prosternum, front legs
modifi ed for grasping
06
05. Hind tibiae and tarsi ciliate, beak
four segmented, eyes very large,
body elongated
Notonectidae
06. Membrane of upper wings
reticulately veined
07
07. Apical appendages of the
abdomen long and slender, tarsi
one segmented
Nepidae
Apical appendages of the
abdomen short, fl at and retractile,
tarsi two segmented
Belostomatidae
08.
Head shorter than the thorax,
including the scutellum; tarsal claws
preapical; hind femur extending
much beyond the apex of the
abdomen; beak four segmented
Gerridae
Systematic Account
Order: Hemiptera
Suborder: Heteroptera
Infraorder: Nepomorpha, Popov, 1968
1. Family: Nepidae, Latreille, 1802
The insects belonging to this family are popu-
larly known as “water scorpions” because of the
fact that forelegs somewhat resemble to the pedi-
palps of scorpions. The body is dorsoventrally
K e y t o fi ve families of adult Hemiptera from
Hyderabad
01.
Antennae shorter than head
02
Antennae as long or longer
than head
08
02.
Ocelli absent, aquatic
03
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