Propylea dissecta explained

Propylea dissecta, is a species of lady beetle native to India, Sri Lanka, Bangladesh and Nepal.^{[1] [2]}

Description

This robust beetle is about 5 to 6 mm in length. Elytra reddish orange in color with black central line. Adults show polymorphism with several intermediate and pale forms.^[3]

Biology

Sexual maturity of male and female ladybirds is about 7 and 9 days respectively. Adult males are more willing to mate with females irrespective of age. Mating duration is longest amongst older adults where 30 day-old males and 20 day-old females can be found.^{[4] [5]} Chemical signals as well as visual and tactile cues initiate male attraction toward females. Mating lasted longest about 275 minutes when it occurred between unmated individuals.^[6]

It is a voracious predator on several aphids such as Aphis gossypii, Aphis craccivora, Lipaphis erysimi, Uroleucon compositae, Brevicoryne brassicae, Rhopalosiphum maidis and Myzus persicae.^{[7] [8] [9] [10]}

Notes and References

1. Omkar. Mishra. G.. December 2005. Evolutionary significance of promiscuity in an aphidophagous ladybird, Propylea dissecta (Coleoptera: Coccinellidae). 2021-09-08. Bulletin of Entomological Research. 95 . 6 . 527–533. en. 10.1079/BER2005386. 16370110 . 43314556 .
2. 2011-09-01 . Ecology of aphidophagous ladybird Propylea species: A review . 2021-09-08 . Journal of Asia-Pacific Entomology . 357–365 . en . 10.1016/j.aspen.2011.01.001. Pervez . Ahmad . Omkar . 14 . 3 .
3. Web site: Predatory Coccinellids (Coleoptera: Cocinellidae) of vegetable insect pests: a survey in mid country of Sri Lanka . 2021-09-08 . Tropical Agricultural Research Vol: 19, 69-77 (2007).
4. Pervez . Ahmad . Omkar . Richmond . Aaron S. . 2004 . The influence of age on reproductive performance of the predatory ladybird beetle, Propylea dissecta . 2021-09-08 . Journal of Insect Science . 4 . 22 . 10.1093/jis/4.1.22 . 528882 . 15864355.
5. Pervez . Ahmad . Omkar . 2004-09-01 . Temperature-dependent life attributes of an aphidophagous ladybird, Propylea dissecta . 2021-09-08 . Biocontrol Science and Technology . 14 . 6 . 587–594 . 10.1080/09583150410001682313. 85045032 .
6. Omkar . Ahmad . Pervez . 2005 . Mating behavior of an aphidophagous ladybird beetle, Propylea dissecta (Mulsant) . 2021-09-08 . Insect Science . 12 . 37–44 . en . 10.1111/j.1672-9609.2005.00006.x. 84497808 .
7. Pervez . Ahmad . S . Omkar . 2004-06-01 . Prey-Dependent Life Attributes of an Aphidophagous Ladybird Beetle, Propylea dissecta (Coleoptera: Coccinellidae) . 2021-09-08 . Biocontrol Science and Technology . 14 . 4 . 385–396 . 10.1080/09583150410001683547. 84745216 .
8. Book: Omkar . Pervez . Ahmad . Omkar . 2016 . Ladybird Beetles . Ecofriendly pest management for food security . Academic Press . 281–310 . 10.1016/B978-0-12-803265-7.00009-9 . 978-0-12-803265-7.
9. Boopathi . Thangavel . Singh . Soibam Basanta . Dutta . Sudip Kumar . Dayal . Vishambhar . Singh . Akoijam Ratankumar . Chowdhury . Samik . Ramakrishna . Yerraboina . Shakuntala . Ingudam . Lalhruaipuii . Khawlhring . 2019-10-15 . Biology, Predatory Potential, Life Table, and Field Evaluation of Propylea dissecta (Coleoptera: Coccinellidae), Against Lipaphis erysimi (Hemiptera: Aphididae) on Broccoli . 2021-09-08 . Journal of Economic Entomology . 113 . 1 . 88–97 . 10.1093/jee/toz272. 31613322 .
10. Web site: Omkar . Pervez . A. . 2004 . Functional and numerical responses of Propylea dissecta (Col., Coccinellidae) . 2021-09-08 . Journal of applied entomology . English.