In:
Arthropod Systematics & Phylogeny, Pensoft Publishers, Vol. 79 ( 2021-11-23), p. 587-597
Abstract:
Abstract The cryptic slime mold beetles, Sphindidae, are a moderately diverse cucujoid beetle family, whose members are obligately tied to slime molds throughout their life. The fossil record of sphindid beetles is sparse; stem-sphindids and crown-group members of uncertain systematic placement have been reported from Cretaceous ambers. Here we review the Mesozoic fossil record of Sphindidae and report a new sphindid genus and species, Trematosphindus newtoni gen. et sp. nov. , from Albian/Cenomanian amber from northern Myanmar ( ca. 99 Ma). Trematosphindus is set apart from all other sphindids by the presence of distinct lateral cavities on the anterior pronotal angles. Our phylogenetic analysis identifies Trematosphindus as an early-diverging genus within Sphindidae, sister to the remainder of the family except Protosphindus , or Protosphindus and Odontosphindus . The new fossils provide evidence that basal crown slime mold beetles begun to diversify by the mid-Cretaceous, providing a valuable calibration point for understanding timescale of sphindid co-evolution with slime molds.
Type of Medium:
Online Resource
ISSN:
1864-8312
,
1863-7221
DOI:
10.3897/asp.79.e72724
DOI:
10.3897/asp.79.e72724.figure1
DOI:
10.3897/asp.79.e72724.figure2
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10.3897/asp.79.e72724.figure3
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10.3897/asp.79.e72724.figure4
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10.3897/asp.79.e72724.figure5
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10.3897/asp.79.e72724.figure6
DOI:
10.3897/asp.79.e72724.figure7
DOI:
10.3897/asp.79.e72724.suppl1
DOI:
10.3897/asp.79.e72724.suppl2
Language:
Unknown
Publisher:
Pensoft Publishers
Publication Date:
2021
detail.hit.zdb_id:
2299371-X
SSG:
12
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