Two new species of Limbodessus diving beetles from New Guinea - short verbal descriptions flanked by online content (digital photography, μCT scans, drawings and DNA sequence data) Author Balke, Michael Author Ruthensteiner, Bernhard Author Warikar, Evie Lilly Author Neven, Katja Author Hendrich, Lars text Biodiversity Data Journal 2015 3 7096 7096 http://dx.doi.org/10.3897/BDJ.3.e7096 journal article http://dx.doi.org/10.3897/BDJ.3.e7096 1314-2828-3-7096 Limbodessus alexanderi Balke & Hendrich sp. n. Materials Type status: Holotype . Occurrence: recordedBy: Riedel ; sex: male ; lifeStage: adult ; Taxon: taxonID: urn:lsid:zoobank.org:act:9C940C82-646F-4075-86B9-3E88D397ABEA; scientificName: Limbodessusalexanderi; order: Coleoptera; family: Dytiscidae; Location: island: New Guinea; country: Indonesia ; stateProvince: Papua; locality: N Sugapa ; verbatimElevation: 3000 m; verbatimCoordinates: 3°40'11.90"S, 137° 4'51.31"E; decimalLatitude: -3.669972 ; decimalLongitude: 137.080919 ; Event: samplingProtocol: collected with strainer ; eventDate: 27.xii.1995 ; Record Level: institutionCode: NHMW ; collectionCode: Insects Type status: Paratype . Occurrence: recordedBy: Riedel ; individualID: four of them with green extraction voucher labels: M. Balke 4424, 4425, 6423, 6424; individualCount: 130 ; lifeStage: adult ; Taxon: taxonID: urn:lsid:zoobank.org:act:9C940C82-646F-4075-86B9-3E88D397ABEA; scientificName: Limbodessusalexanderi; order: Coleoptera; family: Dytiscidae; Location: island: New Guinea; country: Indonesia ; stateProvince: Papua; locality: N Sugapa ; verbatimElevation: 3000 m; verbatimCoordinates: 3°40'11.90"S, 137° 4'51.31"E; decimalLatitude: -3.669972 ; decimalLongitude: 137.080919 ; Event: samplingProtocol: collected with strainer ; eventDate: 27.xii.1995 ; Record Level: institutionCode: MZB, NHMW, ZSM ; collectionCode: Insects Description A large, dark brown to black Limbodessus : length of body 3.0-3.5 mm (N=20); with pronounced habitus disruption between pronotum and elytron Figs 1, 2, 3, 4, 5, 6, 37, 39; dorsoventrally rather thick Figs 7, 8; cervical line present but faint in male or partly dissolved into punctures in females, distinct pronotal plica present, elytral plica absent; flight wings vestigal; metacoxa and metaventrite with few punctures only Fig. 22; ventral side with notable modifications: elytral epipleuron apically modified: slightly concave, with inner margin dilated, its form reminding of a spear tip or shallow spoon Figs 7, 16, 17, 37, 39. Sexes dimorphic, see below. Male Antenna filiform Figs 1, 3, 5. Dorsal surface with coarse punctures but otherwise with shiny surface. Median lobe of aedeagus as in Figs 25, 26 with tiny setae on tip, paramere as in Fig. 31. Female Antenna with strongly enlarged antennomeres forming a conspicuous club Figs 2, 4, 6, 17. Dorsal surface with very fine microreticulation between surface punctures and surfaces therefore appearing matt Figs 2, 10. Etymology Named after Alexander Riedel who discovered this species. The species name is a noun in the genitive case. Distribution Indonesian New Guinea, known only from the type locality which is the mountain range north of Sugapa, Papua (Fig. 23). Ecology Puddles in high altitude grassland in the tropical montane / subalpine habitat. Here, a second, much smaller and black Limbodessus was also collected which is the female of an undescribed species. Conservation The species is most likely not threatened due to its occurrence on remote high altitude plateau. Online resources Higher resolution digital images, μCT data as well as sequence data have been deposited in public databases. The Species-ID species page is a versioned wiki site and can be enhanced through community contributions Hendrich and Balke (2011) . Species-ID species page http://species-id.net/wiki/Limbodessus_alexanderi DNA sequences Partial 3' cox1 sequence deposited at: LN884309-LN884312. μCT data In two Morphosource projects here and here.