Limnomma daohugouense Li & Cai, 2021
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publication ID |
https://dx.doi.org/10.3897/dez.68.71880 |
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publication LSID |
lsid:zoobank.org:pub:DD810A92-CEAC-4333-99B6-3AE21A0D12B6 |
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persistent identifier |
https://treatment.plazi.org/id/92EE1D83-E65B-4345-A343-694ECB200884 |
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taxon LSID |
lsid:zoobank.org:act:92EE1D83-E65B-4345-A343-694ECB200884 |
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treatment provided by |
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scientific name |
Limnomma daohugouense Li & Cai |
| status |
sp. nov. |
Limnomma daohugouense Li & Cai sp. nov.
Figures 1 View Figure 1 , 2 View Figure 2 , 3 View Figure 3 , 4 View Figure 4 , 5 View Figure 5
Material.
Holotype, NIGP176015.
Locality and horizon.
Daohugou Village, Ningcheng County, Inner Mongolia, China. Middle Jurassic, Haifanggou Formation.
Diagnosis.
As for the genus.
Description.
Body elongate, covered with rounded tubercles.
Head prognathous, elongate, constricted posteriorly to form a neck; dorsal surface without prominent posterior protuberances (Fig. 3A View Figure 3 ). Compound eyes protruding laterally (Fig. 5H View Figure 5 ). Antennal insertion area located anterolaterally. Antennal grooves absent. Postocular temples not prominent. Antenna 11-segmented, short, extending beyond anterior prothoracic margin when posteriorly directed, but not reaching posterior prothoracic margin, with thin and short setae; antennomere 1 wider than other antennomeres; antennomere 2 distinctly small, subquadrate, about as wide as long; antennomere 3 elongate, 2.6 times as long as 4; antennomeres 4-10 short, subequal in length; antennomere 11 tapering apically. Mandibles probably with vertical cutting edges (Fig. 5A View Figure 5 ). Gula sutures long, (almost) reaching posterior edge of head (Fig. 4A View Figure 4 ).
Pronotal disc subtrapezoidal, with maximum width near base, distinctly narrower than hind body (Fig. 3B View Figure 3 ); lateral edges dentate (Fig. 5D View Figure 5 ). Pronotal hypomeron very narrow. Propleura reaching anterior margin of prothorax (Fig. 4B View Figure 4 ). Prosternum (Fig. 4B View Figure 4 ) comparatively large, quadrate; prosternal process short. Procoxae contiguous.
Elytra elongate; each elytron with probably ten longitudinal rows of transverse maculated window punctures on disc and two rows of larger maculated window punctures on explanate epipleuron (Fig. 3C-F View Figure 3 ); longitudinal ridges (elytral veins) indistinct, with rounded tubercles (Fig. 5F View Figure 5 ). Mesoventrite with discrimen on posterior half (Fig. 4C View Figure 4 ). Mesocoxae contiguous. Metaventrite subtrapezoidal, with discrimen and katepisternal suture (Fig. 4D View Figure 4 ). Metacoxae transverse, contiguous.
Abdomen broad, with five coplanar ventrites, separated by distinct grooves; ventrites 2-5 subequal in length (Fig. 4E, F View Figure 4 ); ventrites 5 with a slightly raised non-tuberculate circular region in the middle (Fig. 5I View Figure 5 ).
Measurements of holotype.
Body length, 21.8 mm; body width, 9.7 mm; head length (including neck), 3.9 mm; head width (including eyes), 2.3 mm; pronotal length, 4.1 mm; pronotal width, 3.0 mm; elytral length, 13.8 mm; elytral width (single), 4.8 mm.
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.
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Archostemata |
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