Helopicus nalatus
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DeWalt, R. Edward & Grubbs, Scott A., 2011, Updates To The Stonefly Fauna Of Illinois And Indiana, Illiesia 7 (3), pp. 31-50
: 46
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46 |
Helopicus nalatus
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Grubbs, Scott A., Pessino, Massimo & DeWalt, R. Edward, 2012, Michigan Plecoptera (Stoneflies): Distribution Patterns And An Updated Species List, Illiesia 8 (18), pp. 162-173
: 167
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167 |
Helopicus subvarians
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Earle, Jane I., 2009, New State Stonefly (Plecoptera) Records For Pennsylvania, With Additional Records And Information On Rare Species, Illiesia 5 (16), pp. 169-181
: 178-179
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178-179 |
Helopicus subvarians
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Newell, Robert L. & Baumann, Richard W., 2012, Stonefly Sex Gone Awry: An Attempted Mating By A Perlinodes Aureus (Smith) Male With A Pteronarcys Californica Newport Male, Illiesia 8 (16), pp. 152-157
: 156
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156 |