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Still, most biophysical models approximate these complex forms using simplified geometric solids, whose relationships to real body forms have not been rigorously tested. Advances in surface modeling of small objects allow us to interrogate these assumptions by capturing the real 3D complexity of insect body forms. We used photogrammetry to construct 3D models of honey bee specimens and empirically measured body volume and surface area. Compared to empirical measurements, we found that traditional, geometric size estimation methods systematically underestimate body surface area and volume. We incorporated these error estimates into published heat budget data and found that these errors propagated non-linearly through the model, shifting the relative dominance of convective and radiative heat loss as temperature increases. These results suggest that body size and surface area assumptions can distort modeled heat transfer, particularly under low temperatures, demonstrating that morphological simplifications can bias physiological inference. This work underscores the utility of empirical 3D morphology for refining biophysical models of insect thermoregulation.<\/jats:p>","DOI":"10.1038\/s41598-026-40212-3","type":"journal-article","created":{"date-parts":[[2026,5,12]],"date-time":"2026-05-12T23:26:35Z","timestamp":1778628395000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Realistic 3D morphology reshapes insect heat budgets"],"prefix":"10.1038","volume":"16","author":[{"given":"Madeleine M.","family":"Ostwald","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Meredith G.","family":"Johnson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Abigail","family":"Youngblood","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alexis","family":"Childress","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Katja C.","family":"Seltmann","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,5,13]]},"reference":[{"key":"40212_CR1","doi-asserted-by":"publisher","DOI":"10.1093\/acprof:oso\/9780198570875.001.1","volume-title":"Thermal Adaptation: A Theoretical and Empirical Synthesis","author":"MJ Angilletta","year":"2009","unstructured":"Angilletta, M. 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