[2] Female H. convergens can lay over 1000 eggs over the span of a few months during the spring or early summer.

[3] In some populations, the beetles may undergo diapause if there are limited food resources to delay reproduction.

[9] The female lady beetle lays 200 to 1000 eggs over several months during spring and early summer.

If the food supply is abundant, the female may start laying within about a week of mating, but if it is scarce, she may wait for up to nine months.

[12] In the western United States, these beetles may spend up to nine months in diapause in large groups in mountain valleys.

When aphids are scarce, the adults can eat honeydew, nectar and pollen or even petals and other soft parts of plants.

[15] This species was not included in the list of predatory insects usable for population control in the 2021 guidelines issued by the University of Florida, Institute of Food and Agricultural Sciences.

[16] Entomopathogenic fungi used as biopesticides such as Metarhizium anisopliae, Paecilomyces fumosoroseus, and Beauveria bassiana can infect larvae.

[2] H. convergens may be a host for different invertebrate parasites such as Dinocampus coccinellae, Homalotylus terminalis, and Tetrapolipus hippodamiae.