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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Polyphaga » Series Cucujiformia » Coccinelloidea » Coccinellid group » Lady Beetles (Coccinellidae) » Scymninae » Dusky Lady Beetles (Scymnini) » Scymnus » elytral tips pale (Scymnus elytral tips pale)

elytral tips pale

Classification · Identification · Range · See Also · Works Cited
3mm Beetle - Scymnus 3mm Beetle - Scymnus flood debris #9 - Scymnus rubricaudus Lady Beetle - Scymnus rubricaudus - male Scymnus lateral - Scymnus Scymnus rubricaudus Casey - Scymnus rubricaudus Scymnus louisianae J. Chapin - Scymnus louisianae
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga
No Taxon (Series Cucujiformia)
Superfamily Coccinelloidea
No Taxon (Coccinellid group)
Family Coccinellidae (Lady Beetles)
Subfamily Scymninae
Tribe Scymnini (Dusky Lady Beetles)
Genus Scymnus
No Taxon elytral tips pale
Identification
Key to e. US spp. by Joan Chapin (1974) (1)
3. First abdominal sternum of male with median glabrous area surrounded by dense punctures and pubescence • 4
First abdominal sternum not so modified. • 5
4. Apical pale area occupying about one-fourth of elytral length; elongate-oval beetles; (male genitalia with basal lobe and parameres sub equal in length, ventral alae lacking) - securus Chapin
Apical pale area occupying more than two-fifths of elytral length; broadly oval beetles; (male genitalia with basal lobe longer than parameres, ventral alae present) - brullei Mulsant
5. Apical pale area of elytra occupying one-fifth of length; first abdominal sternum of male depressed at middle with minute glabrous area at posterior margin not surrounded by dense pubescence; fifth and sixth sterna with shallow fovea ••• 6
Apical pale area of elytra occupying one-third to two-fifths of length; first abdominal sternum of male unmodified; sixth deeply emarginate with two ventrally produced hooks - rubricaudus Casey
6. Basal lobe of male genitalia with large downward projecting hook on upper right ventral surface; dorsally, 2 laterally curved processes at middle of base - louisianae Chapin
Basal lobe without large downward projecting hook on upper right ventral surface; dorsally, 2 processes located each side of middle - fraternus LeConte
Range
Scymnus brullei - e N. Amer.
Scymnus fraternus - e. US
Scymnus louisianae - se US to AZ, mostly known from: TX-LA
Scymnus rubricaudus - e US
Scymnus securus - coastal e. US
Scymnus postpinctus - w N. Amer.
Also:
Scymnus festatus Wingo - mostly AL to NY (2)
Scymnus uncus Wingo - e. US - rarely coll'ed sp. with singleton records from six e. US states.
See Also
- Range: e. US
Diomus terminatus (Say)
Det. E. G. Riley, 2010
Works Cited
1.The Coccinellidae of Louisiana (Insecta: Coleoptera).
Chapin, J.B. 1974. Louisiana Agricultural Experiment Station Bulletin 682: 2-87.
2.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.
Contributed by Mike Quinn on 23 August, 2015 - 12:52pm
Additional contributions by Deczynski
Last updated 19 July, 2022 - 8:27pm

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