VCSU Macro-Invertabrate Lab
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Order Diptera - The Aquatic Soldier Flies
Distinguishing characteristics - The aquatic soldier fly larvae species found in North Dakota are fairly distinctive. Their head is distinctly separated from thorax (Fig. B), they lack prolegs (Fig. C), and the abdomen has a fringe of hairs at the terminal end (Fig. D). Their body often have a leathery appearance because it is somewhat hardened from calcium carbonate deposits.

Tolerance Value - 8

Feeding Group - Collector

Notes - The soldier flies are a fairly common group with both aquatic and terrestrial groups. Aquatic species are found in a variety of environments, they are most commonly found in the densely vegetated margins of ponds and feed on algae and detritus. The size of the Aquatic Soldier Flies at maturity is usually 7-30 mm, but can be 3-50 mm.

Penny Picture

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