-View of the Tham Pha cave.

Contexts in source publication

Context 1

... a speleological expedition to Laos, which took place in March 2019, the third author (MF) collected three specimens of a small diving beetle in a cave of the Pha Lay mountain range, near Kasi. Since this was the dry season, she was able to progress in this cave along several fossil levels ( fig. 1) for more than 2 km under the range. At the intersection with a muddy system of galleries, she reached a more humid lower floor, climbing down a block chaos followed by a calcite flow; there, water from the last floods remained in residual pools and even flew along a small channel. The calcite flow was darkened by guano deposits: ...

Context 2

... flow was darkened by guano deposits: although no bats were seen during the visit, they should rest at times in the overhanging fault crack on in the ceiling. The beetles were found swimming in one of the pools ( fig. 2). More recently, during an expedition in March 2020 to the same cave, eight more specimens were found in the lower fossil level ( fig. 17). There also, a little water was flowing along calcite cascades, coming from the upper level where a lake ...

Context 3

... beetles, two males and one female, did not appear to fit any species mentioned in this book; he therefore asked the first author (PQ) to lend a helping hand. PQ succeeded in extracting the genitalia of one male. Given its tiny size (0.2 mm), we decided to mount it on a glass slide in DMHF resin; we thus could obtain a clear view of the organ ( fig. 14), at the cost of some flattening by the coverslip. Later, with eight more specimens available, JML mounted another male genitalia in a drop of mounting media DMHF without coverslip, to obtain more natural views of the organ ( fig. 15-16). These pictures were taken with an Olympus™ TG4 camera, adapted to an Olympus CX21 optical ...

Context 4

... (0.2 mm), we decided to mount it on a glass slide in DMHF resin; we thus could obtain a clear view of the organ ( fig. 14), at the cost of some flattening by the coverslip. Later, with eight more specimens available, JML mounted another male genitalia in a drop of mounting media DMHF without coverslip, to obtain more natural views of the organ ( fig. 15-16). These pictures were taken with an Olympus™ TG4 camera, adapted to an Olympus CX21 optical microscope through a LM-Scope™ adapter. High-resolution pictures of the external morphology ( fig. 4-12) have been kindly taken by Michel Perreau on a Keyence™ VHX5000 microscope equipped with a VH-Z250T camera lens. The lateral view ( fig. 13) ...

Context 5

... specimens available, JML mounted another male genitalia in a drop of mounting media DMHF without coverslip, to obtain more natural views of the organ ( fig. 15-16). These pictures were taken with an Olympus™ TG4 camera, adapted to an Olympus CX21 optical microscope through a LM-Scope™ adapter. High-resolution pictures of the external morphology ( fig. 4-12) have been kindly taken by Michel Perreau on a Keyence™ VHX5000 microscope equipped with a VH-Z250T camera lens. The lateral view ( fig. 13) was obtained with a Toupcam™ 14 Mp CMOS camera mounted on an Olympus™ SZX9 stereomicroscope, from several shots assembled with HeliconFocus™ v.7.6. ...

Context 6

... organ ( fig. 15-16). These pictures were taken with an Olympus™ TG4 camera, adapted to an Olympus CX21 optical microscope through a LM-Scope™ adapter. High-resolution pictures of the external morphology ( fig. 4-12) have been kindly taken by Michel Perreau on a Keyence™ VHX5000 microscope equipped with a VH-Z250T camera lens. The lateral view ( fig. 13) was obtained with a Toupcam™ 14 Mp CMOS camera mounted on an Olympus™ SZX9 stereomicroscope, from several shots assembled with HeliconFocus™ v.7.6. http://zoobank.org/374332F7-4F3C-444E-AEE4-B49AD388A795 Type species: Laodytes lapiei n. ...

Context 7

... with protruding front angles encasing the head to the basal third; front margin straight along the posterior part of head; base V-shaped in the middle, sinuated towards right posterior angles; sides with a rimmed gutter, the anterior two-thirds of which contain 6-7 setigerous punctures, provided with deciduous sensory bristles; in lateral view ( fig. 13), the side edge sinuated and not in continuity with the elytral edge. Surface strongly reticulated as on hind part of head, the meshes polygonal but a little wider, reticulation vanishing on sides; the posterior margin showing a short and faint notch near the external third, followed externally by Fig. 6-12. -Laodytes lapiei n. gen., n. ...

Context 8

... sensory bristles; in lateral view ( fig. 13), the side edge sinuated and not in continuity with the elytral edge. Surface strongly reticulated as on hind part of head, the meshes polygonal but a little wider, reticulation vanishing on sides; the posterior margin showing a short and faint notch near the external third, followed externally by Fig. 6-12. -Laodytes lapiei n. gen., n. sp., ♂. -6, Head and pronotum, dorsal view. -7, Head, ventral view. -8, Prosternal process. -9, Metaventrite and metacoxae. -10, Metacoxal process. -11, Protarsus. -12, ...

Context 9

... process (fig. 9); epipleuron getting regularly narrower to the metacoxae level, without oblique carina near shoulder; metepisternum in right triangle, about twice longer than wide; metaventral wings very narrow; metacoxal lines absent ( fig. 9): only a flattened raised plate visible on each side of the median groove; metacoxal process ( fig. 10) with median part extended backwards; hind margin obtusely emarginate medially, with each side obliquely cut and both margins converging forward; lateral lobes not rounded, deeply incised and flat; disk of metacoxae reticulated; metacoxal process with median part extended backwards slightly above the abdomen; the latter with five ...

Context 10

... Pro-and mesotarsi four-segmented, rather wide, pro-and mesotibiae short and dilated on the distal half ( fig. 5), pro-and mesotarsomeres 1-2 with adhesive setae but without distinct sucker cups ( fig. 11), hind legs thinner with oblong femora and large oval hind trochanters (fig. 10); mesotibiae densely adorned with spiny setae; metatrochanters reticulated with transversely elongated meshes; metatarsal claws of subequal length ( fig. ...

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... Pro-and mesotarsi four-segmented, rather wide, pro-and mesotibiae short and dilated on the distal half ( fig. 5), pro-and mesotarsomeres 1-2 with adhesive setae but without distinct sucker cups ( fig. 11), hind legs thinner with oblong femora and large oval hind trochanters (fig. 10); mesotibiae densely adorned with spiny setae; metatrochanters reticulated with transversely elongated meshes; metatarsal claws of subequal length ( fig. ...

Context 12

... on the distal half ( fig. 5), pro-and mesotarsomeres 1-2 with adhesive setae but without distinct sucker cups ( fig. 11), hind legs thinner with oblong femora and large oval hind trochanters (fig. 10); mesotibiae densely adorned with spiny setae; metatrochanters reticulated with transversely elongated meshes; metatarsal claws of subequal length ( fig. ...

Context 13

... (Figs. 14-16): as described in the genus diagnosis. Female. -External sexual dimorphism limited to the protarsi, thinner than those of the male and without visible adhesive ...