Published December 31, 2019
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Table 1 in Revision of fossil Metretopodidae (Insecta, Ephemeroptera) in Baltic amber - Part 4: Description of two new species of Siphloplecton Clemens, 1915, with notes on the new S. jaegeri species group and with key to fossil male adults of Siphloplecton
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Table 1. Measurements of fossil representatives of the Siphloplecton jaegeri species group.
| Adult characters | Siphloplecton jaegeri [MNB, MB.I 7370, male imago] (mm) | Siphloplecton jaegeri [MNHN, 4655 BA, male imago] (mm) | Siphloplecton landolti sp. nov. [SMNS, BB– 2377, holotype, male imago] (mm) | Siphloplecton studemannae sp. nov. [SMNS, BB– 2626, holotype, female imago] (mm) | Siphloplecton studemannae sp. nov. [MNHK, MP/1626, paratype, female imago] (mm) | Siphloplecton sp. 5 [CCHH, BaB 1159/5, male imago] (mm) | Siphloplecton sp. 6 [MNB, MB.I 7372, male subimago] mm) |
|---|---|---|---|---|---|---|---|
| Length of body | 9.00 | 9.08 | 10.88 | 10.04 | 9.48 | 9.50 | 8.50 |
| Length of right foreleg | - | 9.64 | - | - | - | - | 5.11 |
| Length of femur | - | 1.80 | - | - | - | - | 1.77 |
| Length of tibia | - | 2.00 | - | - | - | - | 1.05 |
| Length of tarsus | - | 5.84 | - | - | - | - | 2.29 |
| Tarsomere 1 | - | 1.40 | - | - | - | - | 0.48 |
| Tarsomere 2 | - | 1.40 | - | - | - | - | 0.45 |
| Tarsomere 3 | - | 1.44 | - | - | - | - | 0.48 |
| Tarsomere 4 | - | 1.20 | - | - | - | - | 0.53 |
| Tarsomere 5 | - | 0.40 | - | - | - | - | 0.35 |
| Length of left foreleg | 8.54 | 9.40 | 3,44* | 4.04* | - | 13.44 | 5.04 |
| Length of femur | 1.75 | 1.80 | 1.04* | 2.02* | - | 3.12 | 1.73 |
| Length of tibia | 1.95 | 1.88 | 2.40 | 1.52 | - | 2.72 | 1.10 |
| Length of tarsus | 4.84 | 5.72 | 4.64* | 0.50* | - | 7.60 | 2.21 |
| Tarsomere 1 | 1.13 | 1.32 | 1.80 | 0.50 | - | 2.08 | 0.45 |
| Tarsomere 2 | 1.13 | 1.32 | 2.00 | - | - | 1.88 | 0.45 |
| Tarsomere 3 | 1.05 | 1.48 | 0.84* | - | - | 1.64 | 0.50 |
| Tarsomere 4 | 1.15 | 1.20 | - | - | - | 1.44 | 0.48 |
| Tarsomere 5 | 0.38 | 0.40 | - | - | - | 0.56 | 0.33 |
| Length of right middle leg | - | 3.52 | - | 4.28 | - | 7.24 | 3.86 |
| Length of femur | - | 1.32 | - | 1.52 | - | 2.88 | 1.58 |
| Length of tibia | - | 0.40 | - | 1.20 | - | 1.60 | 0.85 |
| Length of tarsus | - | 1.80 | - | 1.56 | - | 2.76 | 1.43 |
| Tarsomere 1 | - | 0.40 | - | 0.60 | - | 0.88 | 0.30 |
| Tarsomere 2 | - | 0.44 | - | 0.32 | - | 0.68 | 0.40 |
| Tarsomere 3 | - | 0.40 | - | 0.24 | - | 0.52 | 0.30 |
| Tarsomere 4 | - | 0.40 | - | 0.22 | - | 0.32 | 0.23 |
| Tarsomere 5 | - | 0.16 | - | 0.18 | - | 0.36 | 0.20 |
| Length of left middle leg | 2.11* | 3.52 | 3.48* | 4.31 | 4.09 | 7.28 | 3.84 |
| Length of femur | - | 1.32 | 1,80 | 1.52 | 1.63 | 2.92 | 1.55 |
| Length of tibia | 0.63* | 0.40 | 1.04 | 1.21 | 1.00 | 1.64 | 0.85 |
| Length of tarsus | 1.48 | 1.80 | 0.64* | 1.58 | 1.46 | 2.72 | 1.44 |
| Tarsomere 1 | 0.35 | 0.40 | 0.64* | 0.62 | 0.44 | 0.80 | 0.30 |
| Tarsomere 2 | 0.50 | 0.40 | - | 0.34 | 0.45 | 0.72 | 0.40 |
| Tarsomere 3 | 0.25 | 0.40 | - | 0.22 | 0.13 | 0.48 | 0.33 |
| Tarsomere 4 | 0.20 | 0.40 | - | 0.20 | 0.21 | 0.36 | 0.20 |
| Tarsomere 5 | 0.18 | 0.20 | - | 0.20 | 0.23 | 0.36 | 0.20 |
| Length of right hind leg | 3.52 | 3.10 | - | 4.52 | 2.68* | 6.84 | 3.54 |
| Length of femur | 1.36 | 1.32 | - | 1.68 | 1.45 | 2.48 | 1.63 |
| Length of tibia | 0.78 | 0.40 | - | 1.10 | 0.90 | 1.64 | 0.70 |
| Length of tarsus | 1.38 | 1.38 | - | 1.74 | 0.33* | 2.72 | 1.21 |
| Tarsomere 1 | 0.35 | 0.44 | - | 0.46 | 0.33 | 0.88 | 0.30 |
| Tarsomere 2 | 0.33 | 0.36 | - | 0.44 | - | 0.72 | 0.30 |
| Tarsomere 3 | 0.25 | 0.22 | - | 0.38 | - | 0.48 | 0.20 |
| Tarsomere 4 | 0.20 | 0.16 | - | 0.24 | - | 0.36 | 0.18 |
| Tarsomere 5 | 0.25 | 0.20 | - | 0.22 | - | 0.28 | 0.23 |
| Length of left hind leg | 3.43 | 3.43 | 3.40* | 4.42 | 3.01* | 6.84 | 3.65 |
| Length of femur | 1.30 | 1.32 | 1.92 | 1.72 | 1.48 | 2.48 | 1.65 |
| Length of tibia | 0.75 | 0.44 | 0.84 | 1.06 | 0.88 | 1.60 | 0.75 |
| Length of tarsus | 1.38 | 1.36 | 0.64* | 1.64 | 0.65* | 2.76 | 1.25 |
| Tarsomere 1 | 0.35 | 0.40 | 0.64* | 0.42 | 0.30 | 0.84 | 0.30 |
| Tarsomere 2 | 0.35 | 0.40 | - | 0.42 | 0.35* | 0.76 | 0.35 |
| Tarsomere 3 | 0.25 | 0.20 | - | 0.38 | - | 0.52 | 0.25 |
| Tarsomere 4 | 0.18 | 0.16 | - | 0.22 | - | 0.32 | 0.15 |
| Tarsomere 5 | 0.25 | 0.20 | - | 0.20 | - | 0.32 | 0.20 |
| Length of right forewing | 8.13 | 8.20 | 11.60 | 8.80 | 9.95 | 9.84 | 8.75 |
| Length of left forewing | 8.25 | 8.08* | 11.80 | 8.60 | 6.88* | 9.86 | 8.55 |
| Length of right hind wing | 3.15 | 2.70 | 3.60 | - | 3.25 | 3.50 | 2.75 |
| Length of left hind wing | 3.20 | - | 3.25* | 2.92 | 3.30 | 3.52 | 2.80 |
| Hind/forewings length ratio | 0.39 | 0.39 | 0.31 | 0.34 | 0.33 | 0.36 | 0.32 |
| Length of right cercus | 4.25* | - | 2.84* | 2.24* | 3.03 | - | 4.25* |
| Length of left cercus | 4.20* | - | 3.16* | 2.32* | 4.50 | 8.80 | 4.00* |
Notes
Published as part of Godunko, Roman J., Neumann, Christian & Staniczek, Arnold H., 2019, Revision of fossil Metretopodidae (Insecta, Ephemeroptera) in Baltic amber - Part 4: Description of two new species of Siphloplecton Clemens, 1915, with notes on the new S. jaegeri species group and with key to fossil male adults of Siphloplecton, pp. 1 in ZooKeys 898 on page 1, DOI: 10.3897/zookeys.898.47118
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