Cylindrostethus gaudanti, Hartung, Viktor, Garrouste, Romain, Pouillon, Jean-Marc & Nel, André, 2016
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publication ID |
https://doi.org/ 10.26879/638 |
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publication LSID |
lsid:zoobank.org:pub:830976AF-32EF-4483-A064-0E9557B37D98 |
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persistent identifier |
https://treatment.plazi.org/id/215CAF7C-519D-442B-B8B3-CFB3EB15B1BB |
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taxon LSID |
lsid:zoobank.org:act:215CAF7C-519D-442B-B8B3-CFB3EB15B1BB |
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treatment provided by |
Felipe |
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scientific name |
Cylindrostethus gaudanti |
| status |
sp. nov. |
Cylindrostethus gaudanti View in CoL sp. nov.
Figures 1-6 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5 View FIGURE 6 , Table 1
zoobank.org/ 215CAF7C-519D-442B-B8B3-CFB3EB15B1BB
Etymology. After our friend the late Dr. Jean Gaudant, specialist on Cenozoic fishes.
Material. Holotype: MNHN.F.A53794, male ( Figure 1 View FIGURE 1 ). Allotype: MNHN.F.A53795, female ( Figures 2 View FIGURE 2 , 4.1 View FIGURE 4 ). Paratypes: MNHN.F.A53796, male; MNHN.F.A53797, female ( Figures 5.1 View FIGURE 5 , 6.2 View FIGURE 6 ); MNHN.F.A53798, female ( Figures 3.1 View FIGURE 3 , 5.2 View FIGURE 5 ); MNHN.F.A53799, male ( Figure 4.2 View FIGURE 4 ); MNHN.F.A53800, male ( Figure 3.2 View FIGURE 3 ) (all Nel leg.); MNT-06-880AB, female (?) ( Figure 6.1 View FIGURE 6 ).
Type horizon. Palaeocene, spongo-diatomite maar Paleolake.
Type locality. Menat , Puy-de-Dôme, France .
Diagnosis. Fore tibiae widened apically. Fore femora in male longer than in female.
Description. Large-sized, body covered with dense setation; apterous gerrids with elongate, slender body: males: smaller size 14.5 mm, average length 15.8 mm, larger size 18.0 mm; females: smaller size 15.8 mm, average length 16.3 mm, larger size 17.0 mm; average distance between meso-acetabulum 3.05 mm in males and 3.07 mm in females. Body and legs covered with dense setation. Head poorly preserved, but seemingly short. Eyes not discernible. Antennae only partly preserved in all specimens, first antennomere very long (average length 5.2 mm), second antennomere much shorter, third and fourth mostly not preserved. Rostrum short and thick, not long enough to reach posterior margin of prosternum. Trichobothria could not be found on heads. Pronotum short and transverse, ca. 1 mm long, 2 mm wide ( Figure 3.2 View FIGURE 3 ). Mesonotum large and broad, ca. 4 mm long, 2 mm wide, metanotum distinct, with a medial suture, without secondary ridge. Forelegs long, average femur length 5.05 mm in males and 4.25 mm in females; tibia length 4.8 mm (both sexes together), broadened at apex; fore tarsus probably with two tarsomeres, broken at apex, together ca. 1 mm long, second tarsomere almost twice as long as first, pretarsal structures not preserved. Long and slender middle legs inserted laterally on thorax; middle femur length 12.9 mm, middle tibia ca. 10 mm long, somewhat widened apically (in specimen MNT-06-880, width at base 0.2 mm, in the middle 0.15 mm, at apex 0.2 mm). Hind legs as long as middle legs; hind femur length ca. 11 mm (both sexes together), tibia ca. 11 mm. In all three leg pairs, femora and tibiae covered with short dark setae. Abdomen ca. 8.5 mm long, almost parallel-sided. Genital segments of the male are not seen in detail, but obviously symmetrical ( Figure 4.2 View FIGURE 4 ). Male pygophor can be seen in the paratype MNHN.F.A53799, apparently rounded. Female genital segments also symmetrical ( Figure 2.2 View FIGURE 2 ), average length 1.3 mm, the first gonocoxites are well seen ( Table 1).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.