Butterfly model system

𝙱𝚞𝚝𝚝𝚎𝚛𝚏𝚕𝚢 𝚖𝚘𝚍𝚎𝚕 𝚜𝚢𝚜𝚝𝚎𝚖

Host plant : Calotropis
( white)
Total no of larvae : 5
Location : Pazhuvil, Thrissur, Kerala.
Data collector : Seethalakshmi. C. R. SN college Nattika.
Date : 15/3/2023.

I got the caterpillar on March 15 th.
Size : 3.1 cm
Colour : slightly whitish body contains black coloured segments with yellowish patches , between the segment small black lines are noted.
Throns contains black and reddush colur with yellow colour.
( march 15 -17 )

Date :17/ 3/2023
One caterpillar is pupating.(pupa:1)

Date :18/3/2023
Other 4 caterpillars are pupated. (Pupa:2,3,4,5)

𝙽𝚊𝚝𝚞𝚛𝚎 𝚘𝚏 𝚙𝚞𝚙𝚊𝚎 :

its body becomes shortened and decolorized.
where the caterpillar spins a silk pad from which it soon hangs vertically to take on the pre-pupatory pose.

Only one pupa is green in colour ( puapted on wire )

Other pupae are in whitish pink colour.

Date :23/3/2023
Pupa -1 the pupal skin turns translucent as the development within the pupal case comes to an end. The prominent white spots on the forewing upperside also become discernible.( 7:31 am )

It is hatched out(8:01 am).

Date :23/03/2023 & 24/03/2023.
Pupa:(2,3,4,5)
the pupal skin turns translucent as the development within the pupal case comes to an end. The prominent white spots on the forewing upperside also become discernible.

Date: 24 /03/2023

All pupae are hatched off.

𝙲𝚘𝚗𝚌𝚕𝚞𝚜𝚒𝚘𝚗 : It is Plain tiger butterfly.
I got it at 5 th instar larval stage.
One Female and other 4 of them are Male

Pain tiger butterfly :

The body is black with many white spots. The wings are orange, the upperside brighter and richer than the underside. The apical half of the forewing is black with a white band. The hindwing has three black spots in the center. The wings are bordered in black and outlined with semicircular white spots as the hindwings, which the female lacks. They appear as a large black spot with a white centre if viewed from the underside

Differentiation of Males & Females :Male and female plain tigers look extremely similar, but males can easily be differentiated from females with the presence of an additional black-and-white spot on its hindwing.

@Arunan sir, @KiranyadavR ma’am, @Himanshu sir, @Theertha, @Shraddha276, @Aastha1 others

Reference :
Danaus chrysippus - Plain Tiger - Taxo4254 - Wiki.nus.

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How does catterpillars of Plain Tiger and Monarch butterflies survive on the leaves of calotropis and milkweed, which produces toxic milk juices?
@2020ugchsncnseethala

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