Ziegler Reservoir, Locality 49, Unit 11: Late/Upper Pleistocene, Colorado
collected 2010-2011

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Insecta - Trichoptera - Limnephilidae
Limnephilidae indet. Kolenati 1848
5 individuals
Insecta - Coleoptera - Staphylinidae
Tachinus lanei Hatch 1957
1 individual
recombined as Nitidotachinus lanei
Tachinus elongatus Gyllenhal 1810
1 individual
Tachyporus nimbicola Campbell 1979
1 individual
Neohypnus sp. Coiffait and Saiz 1964
1 individual
Pycnoglypta lurida (Gyllenhal 1813)
1 individual
Eucnecosum brachypterum (Gravenhorst 1802)
1 individual
Aleocharinae indet. (Fleming 1821)
1 individual
Lordithon longiceps (LeConte 1863)
1 individual
Insecta - Coleoptera - Scarabaeidae
Dialytes sp. Harold 1869
1 individual
Aphodius plutonicus Fall 1907
1 individual
recombined as Agoliinus plutonicus
Insecta - Coleoptera - Hydrophilidae
Hydrobius fuscipes (Linnaeus 1758)
1 individual
Insecta - Coleoptera - Elateridae
Elateridae indet. Leach 1815
1 individual
Insecta - Coleoptera - Byrrhidae
Arctobyrrhus subcanus (LeConte 1878)
1 individual
Insecta - Coleoptera - Curculionidae
Tanysphyrus lemnae (Fabricius 1792)
2 individuals
recombined as Tanysphyrus (Tanysphyrus) lemnae
Scolytus piceae (Swaine 1910)
9 individuals
Polygraphus rufipennis (Kirby 1837)
1 individual
Xyleborus saxeseni (Ratzeburg 1834)
1 individual
recombined as Xyleborinus saxeseni
Hylastes nigrinus (Mannerheim 1852)
1 individual
Magdalis lecontei Horn 1873
1 individual
Insecta - Coleoptera - Chrysomelidae
Chrysomelidae indet. (Latreille 1802)
1 individual
original and current combination Chrysomelinae
Longitarsus sp. Berthold 1827
1 individual
Insecta - Coleoptera - Laemophloeidae
Leptophloeus cf. alternans (Erichson 1846)
1 individual
Insecta - Coleoptera - Latridiidae
Corticaria sp. Marsham 1802
1 individual
Insecta - Coleoptera - Monotomidae
Rhizophagus remotus Le Conte 1866
1 individual
Insecta - Coleoptera - Carabidae
Dyschirius sp. Bonelli 1810
1 individual
Bembidion bimaculatum (Kirby 1837)
1 individual
recombined as Bembidion (Asioperyphus) bimaculatum
Bembidion constricticolle (Hayward 1897)
1 individual
recombined as Bembidion (Neobembidion) constricticolle
Bembidion coloradense (Hayward 1897)
1 individual
recombined as Bembidion (Notaphus) coloradense
Insecta - Hymenoptera - Formicidae
Myrmica lobifrons Pergande 1900
1 individual
Formica neorufibarbis Emery 1893
2 individuals
Insecta - Psocodea
Phthiraptera indet. Haeckel 1896
1 individual
see common names

Geography
Country:United States State/province:Colorado County:Pitkin
Coordinates: 39.2° North, 107.0° West (view map)
Paleocoordinates:39.2° North, 107.0° West
Basis of coordinate:estimated from map
Altitude:2705 meters
Geographic resolution:small collection
Time
Period:Quaternary Epoch:Pleistocene
Stage:Late/Upper Pleistocene 10 m.y. bin:Cenozoic 6
Key time interval:Late/Upper Pleistocene
Age range of interval:0.12900 - 0.01170 m.y. ago
Age estimate:103 to 101 Ka (other)
Stratigraphy
Stratigraphic resolution:bed
Stratigraphy comments: MIS 5c, dated by OSL.
Lithology and environment
Primary lithology: unlithified peat
Environment:pond Tectonic setting:non-subsiding area
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:chemical
Minimum sieve size:0.300
Reason for describing collection:general faunal/floral analysis
Museum repositories:DMNH
Collection dates:2010-2011
Collection method comments: Boiled in a dilute solution of sodiumhexametaphosphate, a dispersant. Most samples disaggregated in this procedure, but a few contained highly felted peats that were subsequently treated in cold, 7% KOH solution to aid disaggregation. The organic fraction of each sample was then wet sieved on a 300 μm screen, and insect fossils were isolated from plant residues by the kerosene flotation method.
Metadata
Database number:169336
Authorizer:M. Clapham Enterer:M. Clapham
Modifier:M. Clapham Research group:paleoentomology
Created:2015-05-19 22:56:00 Last modified:2015-05-22 23:56:39
Access level:the public Released:2015-05-19 22:56:00
Creative Commons license:CC BY
Reference information

Primary reference:
55325. S. A. Elias. 2014. Environmental interpretation of fossil insect assemblages from MIS 5 at Ziegler Reservoir, Snowmass Village, Colorado. Quaternary Research 82:592-603 [M. Clapham/M. Clapham]