Macrosiphum rosae (Linnaeus, 1758)

Carvalho, Marília Mickaele Pinheiro, Vieira, Daniel Amorim, Pec, Marvin & Souza, Brígida, 2022, Inter - and intraspecific relationships between Macrosiphum rosae (Hemiptera: Aphididae) and Chrysoperla externa (Neuroptera: Chrysopidae), Revista Brasileira de Entomologia (e 20220086) 66, pp. 1-8 : 2

Consumption of Macrosiphum rosae nymphs and adults by Chrysoperla externa larvae

The consumption of two groups of aphids of different ages by C. externa larvae of the first, second, and third instars was assessed. One group included young aphids (second and third instars), and the other consisted of older aphids (fourth instar and adults). To assess the consumption by the second and third instars of the predator, the larvae were fed E. kuehniella eggs made available ad libitum until they reached the instar to be studied. The number of aphids offered to the larvae was higher than their intake capacity, as determined in preliminary tests. The insects were confined to plastic containers.Daily, all uneaten aphids were replaced by others of the same age to ensure that the study included individuals of the same age. The dead aphids were counted daily per instar of C.externa , characterized by the twisted and dehydrated morphology resulting from the predatory action.