Family Species Conjugation Type of conjugation n sperm sperm length (mm) sperm SE n mass Soma (mg) Soma SE Testes (mg) Testes SE Paragonia (mg) Paragonia SE Total mass (mg) Total SE Dytiscidae Acilius mediatus yes pairs 5 0.177 0.003 12 34.06152 1.20521 3.118458 0.140721 1.476375 0.040286 38.65636 1.30958 Dytiscidae Acilius semisulcatus yes pairs 5 0.24332 0.0049826 12 59.69413 1.56516 3.234058 0.299841 2.09235 0.392811 65.020533 1.9028721 Dytiscidae Agabus ambiguus yes aggregates 5 1.08572 0.0133128 10 13.86209 0.6176496 0.6948 0.0467037 0.498 0.1736661 15.05489 0.6937918 Dytiscidae Celina hubbelli yes rouleaux 4 3.581* na 12 1.390325 0.0034685 0.05245 0.0034685 0.0294083 0.001564 1.4721833 0.0359412 Dytiscidae Coptotomus longulus no none 4 1.5378 0.053627 12 11.267908 0.3151804 0.558625 0.0601165 0.30255 0.0237229 12.129083 0.321663 Dytiscidae Desmopachria convexa no none 6 1.5166667 0.0256301 12 0.2495667 0.0101554 0.0051833 0.000884 0.004175 0.0005264 0.258925 0.0110354 Dytiscidae Graphoderus liberus yes pairs 5 0.20032 0.0020723 12 29.154933 1.2627116 2.3836917 0.246585 0.2294 0.0245383 31.768025 1.4729804 Dytiscidae Heterosternuta pulcher yes rouleaux 5 1.28396 0.0283318 12 1.0650333 0.0101417 0.07315 0.0046449 1.148325 0.0046449 1.148325 0.0421797 Dytiscidae Hydroporus sp. yes rouleaux 5 0.44804 0.0136221 12 2.4647 0.0558456 0.0371833 0.0032541 0.5647833 0.0361448 3.0666667 0.057344 Dytiscidae Hydrovatus pustulatus yes rouleaux 9 4.493* na 12 0.6788167 0.0323904 0.0166333 0.0013091 0.0063917 0.0006791 0.7018417 0.0334111 Dytiscidae Hygrotus sayi yes rouleaux 5 0.53092 0.0057067 12 1.3069167 0.034221 0.0314083 0.0015321 0.07525 0.00186 1.413575 0.0349903 Dytiscidae Ilybius oblitus yes aggregates 2 1.965 na 12 25.6906 0.7390196 1.5308833 0.086557 2.2036 0.0566227 29.425083 0.822765 Dytiscidae Laccophilus maculosus yes rouleaux 5 1.1116 0.0276952 12 3.8907417 0.1735734 0.051633 0.0061943 0.0703667 0.0110001 4.0127417 0.1756774 Dytiscidae Nebrioporus rotundatus yes rouleaux 5 0.6806 0.0167681 12 3.6403583 0.064783 0.0906917 0.003379 0.244325 0.0040483 3.975375 0.0673615 Dytiscidae Neoporus dimidiatus yes rouleaux 4 2.0985 0.0234416 12 1.7383083 0.0710283 0.1533417 0.0089205 0.0820417 0.0115503 1.9736917 0.0784657 Dytiscidae Neoporus undulatus yes rouleaux 6 1.3419 0.019929 12 2.143875 0.0607223 0.0787575 0.0047564 0.3435167 0.013261 2.5661492 0.0697989 Dytiscidae Rhantus binotatus yes aggregates 5 0.14924 0.0024416 12 25.743983 0.4929119 1.4647667 0.0489552 1.82959917 0.1034046 29.038342 0.5740491 Gyrinidae Dineutus ciliatus yes spermatostyles 5 0.10224 0.0039544 12 49.926217 1.6081962 2.54581 0.0836687 1.910835 0.0777292 54.382862 1.720944 Gyrinidae Dineutus discolor yes spermatostyles 5 0.09932 0.0024171 12 29.739058 0.5991954 1.0534667 0.0339206 2.7660417 0.0460631 33.558567 0.6127024 Gyrinidae Dineutus emarginatus yes spermatostyles 5 0.14644 0.0008818 12 17.731725 0.473563 1.0862167 0.0325032 0.999083 0.0475994 19.81695 0.5239183 Gyrinidae Dineutus horni yes spermatostyles 5 0.10168 0.0023406 12 17.95045 0.4472958 1.1958333 0.040197 1.8527917 0.072851 20.999075 0.5121701 Gyrinidae Dineutus nigrior yes spermatostyles 5 0.09816 0.0014702 12 22.670858 0.5184231 1.3672417 0.0161689 2.320975 0.0948656 26.359075 0.5700623 Gyrinidae Gyretes iricolor no none 3 6.8372667 0.0967174 12 3.1699 0.0804298 0.209925 0.0117018 0.0792 0.0040523 3.459025 0.0855391 Gyrinidae Gyrinus fraternus no none 5 0.66 0.001821 12 3.616125 0.1589302 0.0186083 0.0020275 0.080667 0.0247468 3.7154 0.1703401 Gyrinidae Gyrinus gibber no none 5 0.57964 0.0098109 12 4.2015167 0.1056847 0.114925 0.0080543 0.2883833 0.0183845 4.604825 0.116989 Gyrinidae Gyrinus latilimbus no none 5 0.44732 0.0064704 12 2.1393 0.0720826 0.0392083 0.0035308 0.1291083 0.013012 2.3076167 0.0648347 Gyrinidae Gyrinus marginellus no none 5 0.6212 0.0044303 12 2.448575 0.107217 0.0983067 0.010442 0.04945 0.0115337 2.5963317 0.1101958 Haliplidae Haliplus fasciatus yes spermatodesm 5 0.31388 0.0073652 12 3.2380583 0.0686256 0.0283917 0.0030105 0.02065 0.0009904 3.2871 0.0702102 Haliplidae Haliplus immacucolis yes spermatodesm 5 0.13532 0.0013793 12 0.9261 0.0302472 0.0197 0.0014691 0.0340083 0.0012558 0.9798083 0.0309984 Noteridae Hydrocanthus iricolor yes pairs 5 0.63296 0.002402 12 2.4716583 0.0691126 0.0288583 0.0015008 0.252825 0.0160869 2.7533417 0.0610675