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Species Olla v-nigrum - Ashy Gray Lady Beetle

Coleoptera - Olla v-nigrum Ashy Gray Lady - Olla v-nigrum Olla v-nigrum Olla v-nigrum, dark form I believe - Olla v-nigrum unknown ladybug - Olla v-nigrum Lady beetle - Olla v-nigrum Olla v-nigrum Is this Anatis labiculata or Olla v-nigrum? - Olla v-nigrum
Classification
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)
No Taxon (Series Cucujiformia)
Superfamily Coccinelloidea
No Taxon (Coccinellid group)
Family Coccinellidae (Lady Beetles)
Subfamily Coccinellinae
Genus Olla
Species v-nigrum (Ashy Gray Lady Beetle)
Other Common Names
Ash Gray / Ashy Grey Lady Beetle
Synonyms and other taxonomic changes
Olla v-nigrum (Mulsant)
Orig. Comb: Harmonia v-nigrum Mulsant 1866
Explanation of Names
v-nigrum (L). "black v" (1)
Numbers
1 sp. n. of Mex. (2)
Size
Length 3.7 to 6.1 mm (3)
Identification
Polished dorsal surface, and lateral margin of elytron feebly explanate (flared, "helmet-shaped").
Gray with black spots, or black with two red spots. Gordon's figures(3)
two basic color variants that are strikingly different:

there's a third alt. uncommon form:
TX: , AZ:
Range
BG data: so. 2/3rds of US (CA-FL-VA-OR), similar dist. per Discovery Life, though mostly sw US per iNat(4)
historically (Gordon, 1985) ranged further north, across most of the US, except Maine and Pacific NW / s. to Argentina - Map (3),(2)
Habitat
may be present in agro-ecosystems (5)
Season
mostly: Mar-Sept (full season: Feb-Dec) (BG data)
Remarks
Type Locality: Oaxaca, Mexico
See Also
Dark form can be confused with Chilocorus sp, which have elytra more explanate (appearing more flared) and are a different shape (more "A-frame" basally). Chilocorus sp. never have white markings on head or pronotum.
Both pale and dark forms might be confused with similar forms of Harmonia axyridis:

Specific coloration, markings, and shape separate the two. Especially note that O. v-nigrum's spots tend to appear triangular, always with the side sloping away from the suture (where the wings meet) basally. H. axyridis' spots tend to be more of a rounded square.
Psyllobora plagiata has similar color and markings, but size is much smaller, only 2.5 - 3.1 mm (1/8 inch or less).
Print References
Mulsant, M.E. 1866. Monographie des coccinellides. Mem. Acad. Sci. Lyon 15: 1-112. (p.64)
Works Cited
1.Dictionary of Word Roots and Combining Forms
Donald J. Borror. 1960. Mayfield Publishing Company.
2.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.
3.The Coccinellidae (Coleoptera) of America North of Mexico
Robert D. Gordon. 1985. Journal of the New York Entomological Society, Vol. 93, No. 1.
4.iNaturalist
5.Survey of lady beetles (Coleoptera: Coccinellidae) found on Texas high plains cotton, alfalfa and weeds.
Carroll, S.C., M.N. Parajulee, and M.D. Arnold. 2007. Proceedings of the World Cotton Conference (September 10–14, 2007), Lubbock, TX.