How to Identify Insects Part One

8/2/2019 How to Identify Insects Part One

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Sylhet Agricultural1 . Si lv er f i sh/Le ism at id ae/ n vers ty

Thysanura

Cerci

Med ian

cauda l f i l am ent

Fig . Si lv er f i sh

Body covered with silvary scales.

filament.

Antenna long and filiform.

De artmentofEntomologyChandra Kanta Dash (Assistant Professor)


2/11

Sylhet Agricultural2 . Dr a on f l /Aeshn idae/ n vers ty

Odona ta Eye cont ag iou s

St igm a p resen t

Base o f t h e h i nd w ingb r oade r t h an t h e baseo f t h e f r o n t w i n g

Win gs d i ss im i la r

Fi . Dr a on f l

Body stout and robust. Wings dissimilar, i.e. the base of the hind wings

are broader than the base of the fore wings..

Compound eyes larger and contagious.

De artmentStigma present at apex of the each wing.

ofEntomologyChandra Kanta Dash (Assistant Professor)


3/11

Sylhet Agricultural3 . Dam sel f l /Coen a r ion id ae/ n vers ty

Odona ta St igm a p resen t

Eyes separat e

Bot h w ings s im i l ar

Body s lender

Fi . Dam sel f l

Bod slender.

Both wings similar.

Compound eyes larger but separated.t gma present on eac w ng.



4/11

Sylhet Agricultural4 . Sh or t h o r ned r assh o er/Ac r id idae /

n vers tyO r thop te r a

Fi l l i f o r m an t enna

H in d l eg j u m p i n g t y p e

Fig . Shor t h o r ned g r asshopp er

o y s ou n o us . n s ss m , .e. e se o e n w n s are broader than the base o the ore win s.

Wings held horizontally when at rest.

De artment

ompoun eyes arger an contag ous.

Sti ma resent at a e o the each win .ofEntomologyChandra Kanta Dash (Assistant Professor)


5/11

Sylhet Agricultural5 . Lon h o r n ed r assh o er/Tet t i on iid ae/

n vers tyO r thop te r aAn t enna l onge rThan t he body

W i n g s t eg m i n a

Ov ipos i t o r b lade l i ke

Fig . Long hor ned g r asshopper

n enna onger an o y an an orm.

,

Hind leg jumping type and tarsi 4 segmented.



6/11

Sylhet Agricultural6 . Fie ld Cr ick et/Gr l l i dae/

n vers ty

O r t h o p t e r aDul l , pa leco lo red bod y


Ov ipos i t o r need le l i ke

Fi . Fi el d cr i ck e t

o y arge u , usua y pa e, rown s or ac n co or.

A pair of unsegmented cerci present.

Fore wings modified into tegmina.

De artment

n eg ump ng type.



7/11

Sylhet Agricultural7 . Mole Cr ick et/Gr l lo t a l id ae/

n vers ty

O r t h o p t e r a

Ov ipos i t o r ves t i g ia l


Robus t b ody

r on eg gg n g y p e

Fig . Mole cr ick et

.

Ovipositor short and vestigial.

Front leg greatly enlarged and modified for digging.pa o ong unsegmen e ce c p esen .

Fore win s modi ied into te mina

De artment



8/11

Sylhet Agricultural8 . Ea rw i /For f icu l idae/ n vers tyD e r m a p t e r a

Cerc i m od i f i ed i n t oTegm ina shor t

Fi . Ear w i

Cerci modi ied into orce like structure.

Fore wings short, modified into tegmina and hind wings semi circular and folded

eneat t e tegm na.Antenna short and ili orm.

Tarsi 3 segmented.

De artment



9/11

Sylhet Agricultural9 . Cock r oach/B la t t i dae / n vers tyDic t yop t e ra

Sh ie ld shaped p ro no t um

Fig . Cock r oach

Body oval, flattened, head partly or completely covered by the shield like pronotum.

Antenna longer than the body filiform..

Fore wings modified into tegmina, hind wings membranous.

De artment

Mandibulate mouthparts, chewing type



10/11

Sylhet Agricultural1 0 . Pr e in m an t id/Man t idae / n vers tyDic t yop t e ra

Head m ovab le

e longa ted

Fore leg rap t o r ia lOr r as in t e

Fig . Prey in g m an t id

Prothorax greatly elongated.Fore leg raptorial type adapted for grasping prey.

De artment



11/11

Sylhet Agricultural11 . Te rm i t e/Te rm i t i dae / n vers tyI s o p t e r a

An t enna m on i l i f or m

Tho r ax and abodom en

i n w o r k er

Fig . Term i t e

w h e n p r e se n t

roa unc on e ween orax an a omen Antenna monili orm, multise mented.

Workers with larger head and prominent mandible.

De artment

nge or w ng ess; w nge orme w t two pa r o w ngs s m ar n s ze an s ape,

held lat over the adomen at rest.

ofEntomologyChandra Kanta Dash (Assistant Professor)Mouthparts chewing type.

How to Identify Insects Part One

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