Mp. Hoffmann et al., SURVEY OF LADY BEETLES (COLEOPTERA, COCCINELLIDAE) IN SWEET CORN USING YELLOW STICKY CARDS, Journal of entomological science, 32(3), 1997, pp. 358-369
Yellow cards coated with adhesive were used to survey for the presence
, relative abundance and seasonal patterns of lady beetles in research
and commercial fields of processing sweet corn in central and western
New York in 1992 and 1993. The lady beetles species recorded, in orde
r of abundance were: Coleomegilla maculata lengi Timberlake, Coccinell
a septempunctata L., Psyllobora vigintimaculata (Say), Hippodamia pare
nthesis (Say), Propylea quatuordecimpunctata (L.), Cycloneda munda (Sa
y), Hippodamia glacialis glacialis (F.), Adalia bipunctata (L.), Cocci
nella trifasciata perplexa Mulsant, and Coccinella transversoguttata r
ichardsoni Brown. Coleomegilla maculata lengi was in sufficient number
to reflect seasonal patterns. Coleomegilla maculata lengi populations
rapidly increased in early July, peaked in late July or early August
and then rapidly declined. The timing of C. maculate lengi peak abunda
nce was more closely related to day-of-year than to stage of crop deve
lopment based on accumulated degree days from planting. The pattern of
capture of C. maculata lengi at incremental distances into the field
did not indicate colonization from the field edge.