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University of Vermont Zadock Thompson Zoological Collection-Invertebrates

Specimen Records: 8,761
Media Records: 2,696
iDigBio Last Ingested Date: 2026-04-23

The Zadock Thompson entomological collection is the oldest and most complete collection of its kind in the state of Vermont. It is also the largest insect collection in the state, with approximately 280,000 pinned specimens, and 20,000 DNA-grade specimens preserved in ethanol. The species represented in the collection represent the diversity of insect’s populations in Vermont, though the range of the specimens is worldwide. The collection consists of approximately 40% Coleoptera, 10% Hemiptera, 10% Diptera, 10% Lepidoptera, 5% Hymenoptera and 5% Odonata, and a selection of various other orders of insects; as well as 60,000 Arachnids. The collection is now the only large arthropod collection in the state, since the ruin of the State Invertebrate Collection by flooding from Tropical Storm Irene. The Thompson collection has repeatedly and regularly been accessed by scientists studying taxonomy, nomenclature, phylogenetics, population ecology, and biodiversity of species living in Vermont, as well as being regularly used for biological class instruction, and by non-biologists, including artists and photographers. Understanding the consequences of climate change on biodiversity and distribution of animals is becoming increasingly important, and thus the scientific value of historical collections such as the Zadock Thompson Zoological Collection increases.

Contacts

Namenone
Rolenone
Emailscahan@uvm.edu
Name Sara Helms Cahan
Rolenone
Emailscahan@uvm.edu
Name Ellen Martinsen
Rolenone
EmailEllen.Martinsen@uvm.edu
Name Sara Helms Cahan
Rolenone
Emailscahan@uvm.edu
Name Ellen Martinsen
Rolenone
EmailEllen.Martinsen@uvm.edu
This table shows any data corrections that were performed on this recordset to improve the capabilities of iDigBio Search. The first column represents the correction performed. The last two columns represent the number and percentage of records that were corrected. A complete list of the data quality flags and their descriptions can be found here. Clicking on a data flag name will take you to a search for all records with this flag in this recordset.
FlagRecords With This Flag(%) Percent With This Flag
dwc_datasetid_added  i6934
79.146
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79.146
dwc_taxonomicstatus_added  i6934
79.146
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79.146
gbif_genericname_added  i6934
79.146
gbif_taxon_corrected  i6934
79.146
dwc_taxonid_replaced  i6931
79.112
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74.158
dwc_scientificnameauthorship_replaced  i5563
63.497
dwc_multimedia_added  i4965
56.672
dwc_taxonrank_replaced  i4254
48.556
idigbio_isocountrycode_added  i4177
47.677
gbif_vernacularname_added  i3744
42.735
geopoint_datum_missing  i3537
40.372
dwc_originalnameusageid_added  i1312
14.975
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10.661
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9.006
dwc_family_replaced  i626
7.145
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2.134
dwc_genus_replaced  i138
1.575
geopoint_low_precision  i38
0.434
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0.183
dwc_country_replaced  i16
0.183
rev_geocode_eez  i8
0.091
datecollected_bounds  i7
0.08
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0.08
dwc_class_added  i3
0.034
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0.034
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0.034
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0.034
dwc_taxonremarks_added  i2
0.023
dwc_stateprovince_replaced  i1
0.011