Liodessus altoperuensis, Balke & Megna & Zenteno & Figueroa & Hendrich, 2020
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publication ID |
https://dx.doi.org/10.3897/alpento.4.55139 |
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publication LSID |
lsid:zoobank.org:pub:EA566CBE-22AF-42B8-9A2D-91BC42BBA002 |
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persistent identifier |
https://treatment.plazi.org/id/9952954C-5C28-454E-82C2-4FD45BC1A35D |
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taxon LSID |
lsid:zoobank.org:act:9952954C-5C28-454E-82C2-4FD45BC1A35D |
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treatment provided by |
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scientific name |
Liodessus altoperuensis |
| status |
sp. nov. |
Liodessus altoperuensis sp. nov. Figs 1 E View Figure 1 , 2 B View Figure 2 , 3 D-F View Figure 3 , 4 View Figure 4 , 6 View Figure 6
Type locality.
Peru, San Pablo, Tumbaden District, Alto Peru, -6.902, -78.603.
Holotype.
Male (MUSM): Peru: Cajamarca, San Pablo, Tumbaden District, Alto Peru, 3933 m, 8.ix.2018, -6.902, -78.603, Y. S. Megna & N. Zenteno (PER_YSM_2018_50).
30 Paratypes
(MUSM, ZSM). 28 exs., same data as holotype. 1 ex. Peru: Cajamarca, Cajamarca, Encañada District, Conga, 4030 m, 7.ix.2018, -6.934, -78.442, Y. S. Megna & N. Zenteno (PER_YSM_2018_46); 1 ex. Peru: Cajamarca, San Pablo, Tumbaden District, Alto Peru, 3928 m, 8.ix.2018, -6.887, -78.595, Y. S. Megna & N. Zenteno (PER_YSM_2018_47).
Description of holotype.
Habitus with little discontinuity between pronotum and elytra, therefore appearing more parallel sided (Fig. 1E View Figure 1 ). Total length: 2.1 mm; length without head 1.8 mm; maximum width: 1.0 mm.
Colouration.
Blackish dorsally and ventrally (as in Fig. 1E View Figure 1 ).
Surface sculpture.
Head with faint microreticulation, frons and clypeus more or less smooth and with few setiferous punctures; with distinct microreticulation but without punctures posteriorly of a faint cervical line. Pronotum and elytron shiny; with dense and coarse setiferous punctation; pronotum with faint microreticulation along anterior margin and towards pronotal disc.
Structures.
Antenna stout. Head with faint cervical line that dissolves into serial punctures laterally; with rounded clypeus. Pronotum with distinct lateral bead; with distinct and deep basal striae (as in Fig. 1E View Figure 1 ). Elytron faint basal striae only obvious under certain angles of illumination; without sutural line. Without basal epipleural transverse carina. Metathoracic wings short, about half the length of elytron (as in Fig. 2B View Figure 2 ).
Genitalia.
Median lobe of aedeagus with inner side comparably straight in lateral view, tip slightly bent and comparably robust; in ventral view slender and gently narrowed towards tip (Figs 3D, E View Figure 3 ); lateral lobes (parameres) bisegmented and narrow, very typical for the genus (Fig. 3F View Figure 3 ).
Variation.
Total length: 1.9-2.2 mm; length without head: 1.7-1.8 mm; maximum width: 0.9-1.0 mm. The elytral stria can be short yet well visible to very faint to absent. We assessed the length of the metathoracic wings in 10 specimens, which all had the same wing length. This does not rule out the possibility that a certain number of specimens can be fully winged.
Female.
Dorsal surface as in male, shiny (Fig. 2B View Figure 2 ).
BOLD platform.
We provided 10 entries in the “COLLI” project, all retrieved in one cluster. Assignment to that cluster was unambiguous, meaning all specimens were correctly assigned to this morphologically delineated species.
Etymology.
Named after the type area. The name is an adjective in the nominative singular.
Comparative notes.
The species is well characterized by its smaller size, almost entirely black coloration, elytral plica very short or absent, shape of male genitalia and cox1 signature.
Distribution.
Only known from the high Andes in north western Peru (Fig. 4 View Figure 4 ).
Habitat.
Shallow and exposed peatland puddles, collected with strainer out of mats of vegetation including mosses (Fig. 6 View Figure 6 ).
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.