Community Pollinator Survey, Washtenaw County Parks

As of June 8, We've added a genus-level network and table summarizing all data for Draper, County Farm, and Scio Woods properties. What does it all mean? In the next month, after reviewing the data across all sites and plants, we will put together an analysis. There will be a lot to say.

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A few notable species from County Parks

Cellophane bee, especially abundnant in trees at County Farm. These originate from conspicuous ground nests easily observed at several locations.
Specialist mining bees, Andrena distans (above), Andrena erigeniae (below).
Above: The cuckoo bee Sphecodes sp, the only one collected.

Below: A sweat bee, of the subgenus dialictus, which exhibit green/blue/gold reflections.

Wash Co — Insect Species Count by Plant, 2026

Group ID Apple/Pear Bellwort Buttercup Chokecherry Cohosh Dandelion Dead nettle Geranium Marsh marigold Redbud Serviceberry Spring beauty Trillium Viola Willow Yellow rocket
Bee Andrena NOTfulgida2
Andrena alleghaniensis2
Andrena barbara1
Andrena crataegi11
Andrena cressonii11
Andrena distans31
Andrena dunningi74325
Andrena erigeniae13
Andrena heraclei4
Andrena imitatrix111
Andrena mandibularis1
Andrena melandrena1
Andrena miserabilis4452
Andrena nasonii11
Andrena perplexa2
Andrena robertsonii3
Andrena rugosa3
Andrena sigmundi55
Andrena sp1111
Andrena spireana1
Andrena thaspii1
Andrena tridens1
Andrena vicina9
Apis mellifera91
Augorochlora pura11512133
Augorochlorella aurata1
Bombus fervidus1
Bombus impatiens161
Ceratina sp1531534
Colletes inaequalis127101
Dialictus sp72
Halictus rubicundus21
Lasioglossum Lasioglossum11
Lasioglossum dialictus62411211
Nomada cressonii1
Nomada illinoisensis1
Nomada luteoloides352
Nomada red412
Nomada sp121
Osmia cornifrons11310
Osmia georgica1
Osmia pumila21
Sphecodes sp1
Sphecodogastra sp1
Xylocopa virginica5
Coleoptera Cerambycid2
Coleomegilla maculata1
Pidonia vibex2
Lepidoptera Polites sp1
Non-syrph fly Bombylius major2211
Fly sp11112
Syrphid Anasimyia anausis5
Epalpus signifer1
Eristalis sp1
Platycheirus ms15
Platycheirus ms22
Wasp Parasitoid 11
Parasitoid 21
Total visitors 3411243142771551196032338

David Cappaert, Update June 10, 2026

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