Coleoptera Karyotype Database
Summary
Ingested 2026-04-21. 1 findings extracted and verified.
Findings worth citing
Finding 1 — The extreme range of beetle diploid chromosome numbers spans from 4 in the elaterid Chalcolepidius zonatus to 70 in the adephagan Dixus capito obscuroides.
The lowest documented diploid chromosome number, 4, is found in the elaterid Chalcolepidius zonatus. The highest is found in the adephagan Dixus capito obscuroides, which has — p. 19-20
Why this is citable: Documents the empirical bounds of karyotype variation in Coleoptera based on a database of 4,797 beetle karyotypes, useful for framing the scale of chromosome number evolution across the order.
Counter / limitation: The diploid number of 70 for Dixus capito obscuroides is split across pages 19–20, with ‘70’ appearing on page 20 rather than page 19. The finding text asserts ‘70’ as fact, but the quote as supplied ends mid-sentence and does not include the number itself—readers relying only on the quote cannot verify the upper bound claimed in the finding text.
Topics: chromosome_number_evolution, coleoptera_karyotype
Read the paper
doi.org/10.1649/0010-065x-69.1.174