Genus Cycloneda - Spotless Lady Beetles
Larval systematics of North American Cycloneda Crotch (Coleoptera: Coccinellidae)By Robert Gordon and Natalia Vandenberg
Insect Systematics and Evolution, vol. 28, no. 3, 1993
Invaluable aid for identifying 4th-instar larvae of Cycloneda
lady beetles. Key to the three North American species; detailed description, line drawings, and microscopic photos of each species; discussion on separating these three species from a related Central American Cycloneda
, and of the Cycloneda
genus from other lady beetle larvae.
Sold online for $25 at a scientific research Web site:
With this key, I find it easier to identify the larvae of Cycloneda munda
, C. polita
, and C. sanguinea
than the adults!
Natural enemies of the Coccinellidae: parasites, pathogens, and parasitoids.By Riddick, E.W., T.E. Cottrell, and K.A. Kidd.
Biological Control 51: 306–312., 2009
Riddick, E.W., T.E. Cottrell, and K.A. Kidd. 2009. Natural enemies of the Coccinellidae: parasites, pathogens, and parasitoids. Biological Control 51(2): 306–312.
We review aspects of the life histories of representative enemies of coccinellids (both entomophagous and phytophagous species) and expose both potential and real effects that they have on life parameters of their hosts. Lady beetles are attacked by a variety of natural enemies (bacteria, fungi, mites, nematodes, protozoa, wasps, flies). Few of these enemies have the ability to alter significantly the population dynamics of their hosts. This review should encourage further research to help define the role of natural enemies in the population dynamics of coccinellids. Ultimately, the conservation of beneficial lady beetles and the management of nuisance and pestiferous ones should be major emphases of research on coccinellid–natural enemy interactions.
Nutritional aspects of non-prey foods in the life histories of predaceous Coccinellidae.By Lundgren, J.G.
Biological Control 51(2): 294–305., 2009
Lundgren, J.G. 2009. Nutritional aspects of non-prey foods in the life histories of predaceous Coccinellidae. Biological Control 51(2): 294–305.
Non-prey foods are an integral component of the diets of most predaceous coccinellids. Under field conditions, numerous coccinellids consume nectar, honeydew, pollen, fruit, vegetation
, and fungus
. These non-prey foods are used by coccinellids to increase survival when prey is scarce, reduce mortality during diapause, fuel migration, and enhance reproductive capacity.
Ecology and behaviour of the ladybird beetles (Coccinellidae).By Hodek, I., H.F. van Emden & A. Honěk (eds).
Blackwell Publishing Ltd., Chichester, UK, xxxvii + 561 pp., 2012
Hodek, I., H.F. van Emden & A. Honěk (eds). 2012. Ecology and behaviour of the ladybird beetles (Coccinellidae). Blackwell Publishing Ltd., Chichester, UK, xxxvii + 561 pp.
from publisher's website
Ladybirds are probably the best known predators of aphids and coccids in the world, though this greatly underestimates the diversity of their biology. Maximising their impact on their prey is an important element in modern conservation biological control of indigenous natural enemies in contrast to the classical approach of releasing alien species.
Causes and consequences of ladybug washups in the Finger Lakes region of New York State (Coleoptera: Coccinellidae).By Denemark, E. and J. Losey.
Entomologica Americana, 116: 78-88., 2010
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Denemark, E. and J. Losey. 2010. Causes and consequences of ladybug washups in the Finger Lakes region of New York State (Coleoptera: Coccinellidae). Entomologica Americana, 116: 78-88.
Abstract.—We searched for and collected data on a phenomenon known as ladybug washups, in which large numbers of coccinellids aggregate on the shores of major bodies of water. Our field season lasted from 5/23/2008 until 8/12/2008 in the Finger Lakes Region of New York, United States.
Aggregation of lady beetles on the shores of lakes (Coleoptera: Coccinellidae).By Lee, R.E., Jr.
American Midland Naturalist, 104(2): 295-304., 1980
Lee, R.E., Jr. 1980. Aggregation of lady beetles on the shores of lakes (Coleoptera: Coccinellidae). American Midland Naturalist, 104(2): 295-304.
ABSTRACT: Aggregations of lady beetles, predominately Hippodamia convergens
and H. tredecimpunctata
, were commonly observed on the shores of lakes in the Upper Midwest during the autumn and spring. The beetles remain on the shore for only a short time, usually dispersing within 2-3 weeks. Lady beetles from autumn shore aggregations and overwintering aggregations are characterized by the presence of large amounts of fat, reproductive inactivitiy, empty digestive tracts, a skew in the sex ratio favoring females and the behavioral tendency to form aggregations.