Limbodessus moni, Surbakti & Balke & Hendrich, 2023
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publication ID |
https://doi.org/ 10.11646/zootaxa.5319.3.7 |
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publication LSID |
lsid:zoobank.org:pub:B887F8EF-55C3-40D1-8C44-28F91201F15C |
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DOI |
https://doi.org/10.5281/zenodo.8203050 |
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persistent identifier |
https://treatment.plazi.org/id/03FA391E-3174-FFA8-FF42-701BCCCD6398 |
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treatment provided by |
Plazi |
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scientific name |
Limbodessus moni |
| status |
sp. nov. |
Limbodessus moni sp. nov.
Type locality. Grasberg (-4.0622° 137.1429°), 3,970 m, West Papua, Indonesia. Type material: Holotype: Male, “ Indonesia:Papua, Grasberg, 3,970 m, viii.2018, (-4.0622° 137.1429°, Surbakti”, “HOLOTYPE / Limbodessus moni sp.n. / Surbakti, Balke & Hendrich det. 2023” [red printed label] ( MZB). GoogleMaps
Paratypes: Three males and one female with same data as holotype ( MZB, KSP, ZSM). 9 males and 2 females: “ Indonesia, Irian Jaya, Lake Anderson [3,555 m] nr Grasberg, 23.iii.1997, D. Polhemus ” ( USNM, ZSM). Each paratype is provided with a red printed paratype label .
Additional material studied: 2 males and 2 females: “ Indonesia, Irian Jaya, Dom nr Grasberg mine, around 4000 m, 20.iii.1997, J. Polhemus ” ( USNM). These four specimens are not included in the paratypes because they are smaller and the shape of the body is more broadly oval. Furthermore, the two females are shiny without fine microreticulation on dorsal surface. Further studies involving additional material and molecular data will determine whether these specimens belong to L. moni sp. nov. or to another undescribed species .
Description of the holotype
A large, brownish black Limbodessus , with distinct habitus disruption between pronotum and elytron.
Coloration: Head dark reddish brown, antennomeres testaceous, with antennomeres 4 to 11 blackish anteriorly. Pronotum testaceous, basal half–except basal corner–darkened, anterior margin of pronotum black. Elytron completely dark blackish-brown ( Fig. 1A View FIGURE 1 ). Ventral side, including metacoxal plates dark reddish brown; prosternal process and epipleura testaceous; fore legs dark brownish with testaceous knees, mid legs almost black, hind legs blackish, with tibiae and tarsomeres basally testaceous.
Sculpture and structure: Head: Punctation fine, somewhat sparse, posteriorly slightly coarser and somewhat denser. Microreticulation visible but very fine, shiny. Cervical line not present.Antenna filiform. Pronotum: Broadest at middle. Punctation coarse, dense, almost evenly distributed, microreticulation absent. Sides of pronotum margined and almost evenly rounded. Angle between pronotum and elytra rather distinct; pronotal plicae present, slightly curved, 2/3 length of pronotum and strongly impressed. Elytra: Elytral plicae short, slightly curved inwards, 1/10 length of elytra. Punctation coarse, dense, almost evenly distributed, microreticulation absent, shiny ( Fig. 1 View FIGURE 1 ). Ventral side: Base of elytral epipleuron simple, without raised transverse carina delineating a basal pit. Metacoxae and metaventrite with few punctures, surface shiny, without microreticulation. Elytral epipleuron apically modified: slightly concave, with inner margin dilated.
Median lobe ( Fig. 2 View FIGURE 2 ) of aedeagus in ventral (A) and lateral (B) view. Left paramere, view on inner side (C) and right paramere, view on outer side (D).
Females: Antennomeres 4–11 slightly enlarged ( Fig. 1B View FIGURE 1 ). Dorsal surface with very fine microreticulation between punctures and therefore appearing matt ( Figs 1B View FIGURE 1 , 4 View FIGURE 4 ).
Variability: Some specimens with more brownish elytron as in Fig. 1B View FIGURE 1 .
Measurements. Holotype: TL = 2.7 mm, TL-H = 2.35 mm, MW = 1.15 mm, TL/MW = 2.35. Paratypes, males: TL = 2.3–2.7 mm, TL-H = 1.9–2.25 mm, MW = 0.95–1.0 mm, TL/MW = 2.16; females: TL = 2.25–2.55 mm, TL-H = 1.75–1.9 mm, MW = 1.0– 1.1 mm, TL/MW = 2.
Etymology. The species is named after the Moni, an indigenous people mainly settling in the mountain areas of New Guinea around the type locality. The name is a noun in the nominative singular standing in apposition.
Differential diagnosis. The new species can be easily separated from most of the other New Guinean Limbodessus by its almost completely blackish surface ( Fig. 1 View FIGURE 1 ). Limbodessus moni sp. nov. is close to the only other blackish species L. alexanderi Balke & Hendrich, 2015 , but can be separated by the shape of the median lobe (compare Figs 2A, B View FIGURE 2 and 3A, B View FIGURE 3 ), the shape of the parameres (compare Figs 2C, D View FIGURE 2 and 3C, D View FIGURE 3 ), the presence of elytral plicae ( Figs 1A, B View FIGURE 1 ) (absent in L. alexanderi , Figs 1C, D View FIGURE 1 ), and the only slightly enlarged female antennomeres 4–11 ( Fig. 1B View FIGURE 1 ), not forming a conspicuous club as in L. alexanderi ( Fig. 1D View FIGURE 1 ) ( Balke et al. 2015, Hendrich et al. 2020).
Distribution. Known only from two localities around the Grasberg Mine and Anderson Lake (Carstenz Pyramid area), between 3,550 and 3,970 m, in West Papua, Indonesia ( Fig. 5 View FIGURE 5 ).
Ecology. Small puddles with mossy edges in high altitude grassland in a tropical subalpine habitat ( Fig. 6 View FIGURE 6 ). All beetles were collected with a small kitchen strainer, and no other diving beetle species than L. moni sp. nov. were recorded in these habitats.
Conservation. Most likely the species is not threatened by human impacts due to its occurrence on remote high-altitude plateaus.
| MZB |
MZB |
| KSP |
KSP |
| ZSM |
Germany, Muenchen [= Munich], Zoologische Staatssammlung |
| USNM |
USA, Washington D.C., National Museum of Natural History, [formerly, United States National Museum] |
| MZB |
Museum Zoologicum Bogoriense |
| ZSM |
Bavarian State Collection of Zoology |
| USNM |
Smithsonian Institution, National Museum of Natural History |
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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