Cockroach

Size of cockroach

¼ to 3 inches (0.6-7.6cm)

Adults (34-53mm)

Wings extend beyond the tip of abdomen in females

False .

In males

It consists of a network of trachea, that open through 12 pairs of small holes called spiracles present on the lateral side of the body.

False

10

Name of Sclerites

Tergites dorsally

Sternites ventrally

Shield covering dorsal part of prothorax

Pronotum

Filliform antennae help in

Touch

Taste

Colours of cockroach

Bright yellow

Red

Green

Head is formed by Fusion of _____ segments

6

Head has mobility due to flexible neck

True

(Frogs me neck absent hota hai)

Describe wings

Tegmina :

Opaque

Dark

Leathery

Hind wings :

Transparent

Membraneous

Anterior of genital pouch:

Female gonopore

Spermathecal pores

Collateral glands

Genital pouch in males formed by:

Dorsally by 9th and 10th terga and ventrally by the 9th sternum

Genital pouch in males composed of

Dorsal anus

Ventral male genital pore

Gonapophysis

Remember the labels

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Gizzard aka

Proventriculus

Structure of gizzard

Outer layer of thick circular muscles

Thick inner cuticle forming 6 highly chitinous plate called teeth

Hepatic cecae and malphigian tubkued number

6-8

100-150

Hindgut differentiated into

Ileum

Colon

Rectum

Location of heart

Elongated muscular tube

Mid dorsal line of thorax and abdomen

Exchange of gasses takes place at tracheoles by diffusion

True

Each malphigian tubule is lined by glandular and ciliated cells

True

(Fat body

Nephrocytes

Urecose glands also help in excretion)

Nervous system:

Fused

Segmentally arranged ganglia joined by

Paired longitudinal connectives on ventral side

Three ganglia in thorax

Six in abdomen

Most of the nervous system is along the ventral part of belly

Testes

4th to 6th abdominal segments

Ejaculatory duct into

Male gonopore

(Ventral to anus)

Mushroom gland

6th and 7th

Accessory reproductive glands

Male external genitalia

Male gonapophysis or phallomere (chitinous asymmetrical structures surrounding the male gonopore)

Ovaries

2nd -6th

Grp of 8 ovarian tubules

Pair of sermatheca

6th

Ootheca

Dark reddish to blackish brown capsule

8mm long

Contain fertilized eggs

9-10 ootheca produced at a time

Each containing 14-16 eggs

Purometabolous development present

True

13 times moulting

Genital pouch comprise of (females)

Genital chamber

Vestibulum

Male reproductive system

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