Description
A “Cockroach: Morphology & Reproduction” (55×90 cm) educational chart illustrates the external body structure and reproductive systems of both male and female cockroaches, using labeled diagrams and concise notes for classroom and laboratory learning.
Morphology Features
Size and Material: The chart is 55×90 cm, printed in color and typically laminated for repeated educational use.
Body Structure:
Shows the dorsal view of the male and ventral view of the female cockroach, with clear divisions of head, thorax, and abdomen.
Highlights characteristic features like compound eyes, long antennae, mouthparts (labrum, mandibles, maxillae, labium, hypopharynx), and wing types (tegmina for forewings and membranous hindwings).
Points out segmented legs (coxa, trochanter, femur, tibia, tarsus) and external appendages (cerci, styles) for locomotion and sensory functions.
Includes external genitalia and further notes on sex-specific anatomical details.
Reproduction Features
Male Reproductive System:
Labeled diagrams cover testes, vas deferens, seminal vesicles, mushroom gland, conglobate (phallic) gland, and male gonapophyses.
Annotation focuses on sperm production, storage, accessory glands, and the transfer of spermatophores during mating.
Female Reproductive System:
Shows ovaries (multiple ovarioles), oviducts, vagina, genital pouch (gynatrium), oothecal chamber for egg-case formation, collaterial glands, and spermathecae (storage of sperm).
Explains egg-laying—females produce oothecae that contain multiple eggs—the external genitalia (ovipositor) helps properly place eggs during reproduction.
Sexual Dimorphism:
Notes differences such as male styles (present in the 9th abdominal segment) and female boat-shaped 7th sternite for egg-laying.
This chart provides a comprehensive visual summary of cockroach anatomy and reproduction, allowing students to easily identify body regions, understand mating and egg-laying, and compare male–female differences in insect systems.