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Loan request (such as from a researcher), leading to Object Entry, Acquisition 
, and Loan
(See also the last paragraph, about the handiness of bulk group or lot data, entered at a previous time during Object Intake, flowing into Object Entry screens for individual CollectionObjects)
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Some general observations: This workflow reminded me of some of the archives. A group of materials comes in - perhaps a couple hundred specimens perhaps of different species from one collecting event or one donation event. That group is divided into an appropriate number of lots, basically to make them physically manageable. The core information (collector, date, location and such) is probably shared across the group. If there is funding or need, the group (a set of lots at this point) will be further divided, processed, identified and annotated. So the hierarchical splitting of an original grouping of objects seems to hold. Dick Moe and others talked about how nice it would be if the original information from the initial group would cascade into the data entry screens as they processed the objects into more granular groupings.
Additional notes on specimen collections from UC Berkeley workshop (Susan Stone, UCB)
Object (specimen) entry usually follows entry of a collecting event or expedition, including collector, date, and location
Objects may come as a donation
Before intake make sure accession is legal and required collecting permits have been obtained
Inventory related specimens from collecting event: bulk loading of related objects is desirable
Compile contextual information tied to specimens (e.g., recordings, images, field notes)