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The Albert J. Cook Arthropod Research Collection

Specimen Records: 343,282
Media Records: 17,343
iDigBio Last Ingested Date: 2026-04-23

In 1867, Professor Albert J. Cook started the ARC and it currently houses ~ 1.5 million specimens mounted on pins, slides or stored in alcohol representing ~35,000 species. A significant portion of the collection represents the insect diversity Michigan and the Great Lakes Region. Other significant collections represent the world-wide arthropod fauna for select taxa, e.g., Lepidoptera and Scolytinae. Researchers in systematics, agriculture, natural resources, urban insect management, to extension personnel and to the general public use these specimens. Please direct inquiries to Anthony Cognato, Director or Sarah Smith, curator (smith462@msu.edu).

Contacts

Namenone
Rolenone
Emailcognato@msu.edu
Name Anthony Cognato
Rolenone
Emailcognato@msu.edu
Name Sarah Smith
Rolecurator
Emailsmith462@msu.edu
Name Anthony Cognato
Rolenone
Emailcognato@msu.edu
Name Sarah Smith
Rolecurator
Emailsmith462@msu.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
idigbio_isocountrycode_added  i256874
74.829
dwc_datasetid_added  i239168
69.671
dwc_parentnameusageid_added  i239168
69.671
dwc_taxonomicstatus_added  i239168
69.671
gbif_canonicalname_added  i239168
69.671
gbif_genericname_added  i239168
69.671
gbif_taxon_corrected  i239168
69.671
dwc_taxonid_replaced  i238768
69.554
dwc_scientificnameauthorship_replaced  i199445
58.099
dwc_multimedia_added  i142468
41.502
gbif_vernacularname_added  i115783
33.728
gbif_reference_added  i114778
33.435
dwc_taxonrank_replaced  i101952
29.699
taxon_match_failed  i50469
14.702
geopoint_datum_missing  i38191
11.125
dwc_country_replaced  i33387
9.726
dwc_family_replaced  i30394
8.854
dwc_originalnameusageid_added  i22447
6.539
dwc_scientificnameauthorship_added  i12192
3.552
dwc_specificepithet_replaced  i10510
3.062
dwc_genus_replaced  i9175
2.673
geopoint_low_precision  i6514
1.898
dwc_taxonremarks_added  i4120
1.2
dwc_acceptednameusageid_added  i2776
0.809
dwc_genus_added  i2509
0.731
dwc_infraspecificepithet_added  i944
0.275
rev_geocode_eez  i821
0.239
dwc_continent_replaced  i808
0.235
dwc_kingdom_suspect  i763
0.222
dwc_order_added  i618
0.18
dwc_class_added  i540
0.157
dwc_kingdom_added  i539
0.157
dwc_phylum_added  i539
0.157
dwc_taxonrank_added  i539
0.157
rev_geocode_mismatch  i483
0.141
dwc_taxonid_added  i400
0.117
dwc_specificepithet_added  i398
0.116
geopoint_datum_error  i374
0.109
dwc_order_replaced  i294
0.086
dwc_family_added  i207
0.06
dwc_continent_added  i63
0.018
dwc_phylum_replaced  i58
0.017
dwc_class_replaced  i43
0.013
datecollected_bounds  i26
0.008
rev_geocode_corrected  i20
0.006
rev_geocode_lat_sign  i12
0.003
dwc_stateprovince_replaced  i8
0.002
rev_geocode_failure  i7
0.002
rev_geocode_lon_sign  i6
0.002
rev_geocode_both_sign  i2
0.001
dwc_infraspecificepithet_replaced  i1
0
scientificname_added  i1
0