Cryptocephalus sanguinicollis nigerrimus
Crotch, 1874
A of case-bearing leaf beetle in the Chrysomelidae. Described by Crotch in 1874. Very few observations exist, with only 3 records in iNaturalist. Known from Middle and North America.
Pronunciation
How to pronounce Cryptocephalus sanguinicollis nigerrimus: /ˌkrɪptəˈsɛfələs ˌsæŋɡwɪnɪˈkoʊlɪs naɪˈdʒɛrɪməs/
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Distinguished from the nominate C. sanguinicollis sanguinicollis by darker, more extensively black coloration. The epithet 'nigerrimus' (meaning 'very black') suggests near-complete black pigmentation compared to the red-collared ('sanguinicollis') nominate form. Specific diagnostic features remain undocumented in available sources.
Distribution
Recorded from Middle America and North America. Exact range boundaries within these regions are not established.
Similar Taxa
- Cryptocephalus sanguinicollis sanguinicollisNominate ; differs in having a red or reddish pronotum (collar), whereas nigerrimus is predominantly black.
More Details
Taxonomic note
This was described by George Robert Crotch in 1874. The extremely low number of modern observations (3 in iNaturalist) suggests it is either genuinely rare, under-recorded, or potentially synonymized with other in some treatments.