South of Juliaetta (Miocene of the United States)

Where: Idaho (46.5° N, 116.8° W: paleocoordinates 46.4° N, 111.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Latah Formation, Langhian (16.0 - 13.8 Ma)

• Latah Formation overlies the Grande Ronde basalts (16-15.5 Ma; Barry et al., 2013), although younger parts of the Grande Ronde are absent at some localiies (Nash & Perkins, 2012). It underlies the Saddle Mountain basalts (c. 15 Ma and younger; Barry et al., 2013). Ash beds within the Latah Formation at White Bird, Idaho, are dated to 15.77 Ma (Mascall Tuff), 15.66 Ma (Bully Creek tuff), and an interpolated age of 14.3 Ma (Nash & Perkins, 2012).

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - small; lithified mudstone

• Interbedded with Columbia River flood basalts.

Size class: macrofossils

Preservation: mold/impression

Collected by S.E. Lewis in 1966; reposited in the UCM

• At least the Megachiline bee is deposited in University of Colorado Museum.

Primary reference: S. E. Lewis. 1969. Fossil insects of the Latah Formation (Miocene) of eastern Washington and northern Idaho. Northwest Science 43:99-115 [M. Clapham/M. Clapham/R. Day]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 97616: authorized by Matthew Clapham, entered by Matthew Clapham on 13.08.2010, edited by Jered Karr

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Plecoptera - Leuctridae
Megaleuctra jewetti n. sp. Lewis 1969 rolled-winged stonefly
J.105 (S.E. Lewis, 1966)
 Blattodea - Kalotermitidae
Eotermes sp.2 Statz 1939 termite
 Hemiptera - Saldidae
"Oreokora froeschneri n. sp." = Propentacora froeschneri
"Oreokora froeschneri n. sp." = Propentacora froeschneri Lewis 1969 shore bug
J.33 (S.E. Lewis)
 Hymenoptera - Formicidae
Lasius sp.2 Fabricius 1805 ant
Camponotus sp.2 Mayr 1861 ant
Dolichoderus sp.2 Lund 1831 ant
? Messor sp.2 Forel 1890 ant
 Hymenoptera - Megachilidae
Megachilinae indet.1 Latreille 1802 mason bee
 Hymenoptera - Apidae
Bombus ? proavus2 Cockerell 1931 bumble bee
 Hymenoptera - Ichneumonidae
Cryptinae indet. Kirby 1837 ichneumon wasp
? Sphecophaga sp.2 Westwood 1840 ichneumon wasp
Pimplinae indet. Wesmael 1845 ichneumon wasp
 Hymenoptera - Tenthredinidae
Macrophya adventitia n. sp. Lewis 1969 wood wasp
J.51 (S.E. Lewis, 1967)
 Trichoptera - Phryganeidae
Phryganea sp.2 Linnaeus 1758 large caddisfly
 Trichoptera - Limnephilidae
Limnephilus sp.2 Leach 1815 caddisfly
Miopsyche sp.2 Carpenter 1931 caddisfly
 Dicondylia -
Coleoptera indet.2 Linnaeus 1758 beetle
Odonata indet. Fabricius 1793 dragonfly
J.46
 Odonata -
Anisoptera indet. Selys-Longchamps and Hagen 1854 true dragonfly
J.39
 Diptera -
Bolitophila pulveris n. sp. Lewis 1969 fungus gnat
J.127 (S.E. Lewis, 1967)
 Diptera - Mycetophilidae
Mycetophilidae indet. Newman 1834 fungus gnat
Mycetophilinae indet. Newman 1834 fungus gnat
"Rhymosia miocenica n. sp." = Rymosia miocenica Lewis 1969 fungus gnat
J.96 (S.E. Lewis, 1967)
Exechia juliaetta n. sp. Lewis 1969 fungus gnat
J.20 (S.E. Lewis, 1967)
Boletina sp.2 Staeger 1840 fungus gnat
 Diptera - Sciaridae
Sciara sepulta n. sp. Lewis 1969 dark-winged fungus gnat
J.4 (S.E. Lewis, 1967)
 Diptera - Anisopodidae
"Anisopus carolae n. sp." = Sylvicola carolae
"Anisopus carolae n. sp." = Sylvicola carolae Lewis 1969 wood gnat
J.113 (S.E. Lewis, 1967)
 Diptera - Bibionidae
Bibio latahensis n. sp. Lewis 1969 march fly
J.27 (S.E. Lewis, 1966)
Bibio testeus n. sp. Lewis 1969 march fly
J.43 (S.E. Lewis, 1966)