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Species Psyllobora vigintimaculata - Twenty-Spotted Lady Beetle

Psyllobora vigintimaculata Tiny Ladybird Beetle - Psyllobora vigintimaculata Tiny ladybug larva - Psyllobora vigintimaculata Immature stages, November - Psyllobora vigintimaculata Lady beetle 10.06.26 - Psyllobora vigintimaculata Tiny Ladybug - Psyllobora vigintimaculata twenty-spotted lady beetle - Psyllobora vigintimaculata Twenty-spotted Lady Beetle - Psyllobora vigintimaculata
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
Superfamily Cucujoidea (Sap, Bark, Fungus and Lady Beetles)
Family Coccinellidae (Lady Beetles)
Subfamily Coccinellinae
Genus Psyllobora (Fungus-eating Lady Beetles)
Species vigintimaculata (Twenty-Spotted Lady Beetle)
Other Common Names
Twenty-Spotted Ladybird Beetle, Twenty-Spotted Ladybug
Synonyms and other taxonomic changes
Psyllobora vigintimaculata (Say)
Orig. Comb: Coccinella 20-maculata Say, 1824
Explanation of Names
Latin '20-spotted'
Length 1.75 to 3.0 mm,
width 1.40 to 2.35 mm (1)
Pronotum with 4 dark spots; elytron usually with 9 spots, spots partially confluent, pattern variable; the dorsal color pattern will usually separate this species from other N. Amer. species (1)
The base color is always pale (white to light tan); the color of the markings is variable:
Dark brown or black:

Brown and dark brown/black:

Orange and black:
CA-GA-NF-AK - Map (2)
In early spring, occurs in numbers about the base of skunk cabbage and on leaves of various shrubs (3). In summer and fall, occurs on any plant with powdery mildew, from ground-level to treetop.
feed on fungus (mostly mildew on leaf surfaces); powdery mildew (4)
Type locality: "Missouri" (1)
The orange and black coloration may be a regional variation, appearing in BugGuide photos from NJ south to GA, west to OK and TX.
Works Cited
1.The Scymnini (Coleoptera: Coccinellidae) of the United States & Canada: Key to genera and revision of Scymnus, Nephus, & Diomus
Robert D. Gordon. 1976. Bulletin of the Buffalo Society of Natural Sciences, Buffalo, NY, Vol 28.
2.The Coccinellidae (Coleoptera) of America North of Mexico
Robert D. Gordon. 1985. Journal of the New York Entomological Society, Vol. 93, No. 1.
3.A Manual of Common Beetles of Eastern North America
Dillon, Elizabeth S., and Dillon, Lawrence. 1961. Row, Peterson, and Company.
4.American Beetles, Volume II: Polyphaga: Scarabaeoidea through Curculionoidea
Arnett, R.H., Jr., M. C. Thomas, P. E. Skelley and J. H. Frank. (eds.). 2002. CRC Press LLC, Boca Raton, FL.