Species Psyllobora vigintimaculata - Twenty-Spotted Lady Beetle

Classification · Other Common Names · Synonyms and other taxonomic changes · Explanation of Names · Size · Identification · Range · Habitat · Food · Remarks · Works Cited

Twenty-spotted ladybird - Psyllobora vigintimaculata

Twenty-Spotted Lady Beetle larva - Psyllobora vigintimaculata

Twenty-Spotted Lady Beetle - Psyllobora vigintimaculata

Postpupal stage - Psyllobora vigintimaculata

Psyllobora sp.? - Psyllobora vigintimaculata

Tiny Ladybug - Psyllobora vigintimaculata

Classification

Kingdom Animalia (Animals)

Phylum Arthropoda (Arthropods)

Class Insecta (Insects)

Order Coleoptera (Beetles)

Suborder Polyphaga (Water, Rove, Scarab, Longhorn, Leaf and Snout Beetles)

Superfamily Cucujoidea

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

Orig. Comb: Coccinella 20-maculata Say, 1824

Explanation of Names

Latin '20-spotted'

Size

Length 1.75 to 3.0 mm, width 1.40 to 2.35 mm(1)

Identification

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 NA species(1)

Range

Southeastern Canada to Alaska, south to Mexico; in US, absent only from coastal Southeast and Florida.(1)

Habitat

In early spring, occurs in numbers about the base of skunk cabbage and on leaves of various shrubs(2). In summer and fall, occurs on any plant with powdery mildew, from ground-level to treetop.

Food

feed on fungus (mostly mildew on leaf surfaces); powdery mildew(3)

Remarks

Type locality: "Missouri"(1)

Works Cited

1.	The Scymnini (Coleoptera: Coccinellidae) of the United States & Canada: Key to genera and revision of Scymnus, Nephus, & Diomus By Robert D. Gordon

2.	A Manual of Common Beetles of Eastern North America By Dillon, Elizabeth S., and Dillon, Lawrence

3.	American Beetles, Volume II: Polyphaga: Scarabaeoidea through Curculionoidea By Arnett, R.H., Jr., M. C. Thomas, P. E. Skelley and J. H. Frank. (eds.)

Contributed by Stephen Cresswell on 24 December, 2005 - 6:27am
Additional contributions by Chuck Entz, Mike Quinn, v belov, Abigail Parker
Last updated 29 April, 2011 - 12:39pm

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