Lepanus, Balthasar, 1966
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publication ID |
https://doi.org/ 10.11646/zootaxa.4564.1.2 |
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publication LSID |
lsid:zoobank.org:pub:27F70B5F-24DD-4C9E-BBA7-2B87476BD49C |
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DOI |
https://doi.org/10.5281/zenodo.5922790 |
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persistent identifier |
https://treatment.plazi.org/id/03832713-FFAA-8D70-A3DA-F82350F596E5 |
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treatment provided by |
Plazi |
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scientific name |
Lepanus |
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Key to species groups within Lepanus View in CoL
The characters used in sexing Lepanus are more evident in some species groups than others. As a rule of thumb, the inner apical angle of the protibia of males extends into a digital process referred to as the apical digit (see examples in Figs 3H View FIGURE 3 ; 4H, J View FIGURE 4 ), correspondingly the apical spur is reduced. In females, the apical digit is either reduced or absent and the apical spur is larger (see examples in Fig 3G, I View FIGURE 3 ). Furthermore, the length of abdominal ventrite 6 in males is usually shorter than that in females and there can be modifications to the shape of the metatibiae and metafemora in males.
1 Pygidium simple, rather flat or more-or-less convex ( Fig. 1 View FIGURE 1 A–C)................................................ 2
- Pygidium with a depression, or large flat rugulose central area, with or without a transverse sinuate fold across the dorsal edge ( Fig. 1 View FIGURE 1 D–F, 2A–F)..................................................................................... 4
2 Pygidial surface strongly sculptured with either prominent microreticulations or heavily punctate and/or setose, rather flat, basal margin strongly projecting ( Fig. 1A View FIGURE 1 ); protibiae with 3 teeth on outer edge, inner apical edge truncate, apical spur present, and male apical digit short with small comb of short, stout setae at inner apex ( Fig. 3G View FIGURE 3 ); elytra densely covered with obvious recurved setae (sometimes partly rubbed off)............................................. L. villosus View in CoL species group
- Pygidial surface smooth, more-or-less convex, any punctures superficial, basal margin not strongly projecting ( Fig. 1 View FIGURE 1 B–C); protibiae with 2 or 3 teeth on outer edge, inner apical edge angulate (always deeply angulate if 3 protibial teeth present), only rarely truncate, apical spur and male apical digit long either with or without a small comb of short, stout setae at the inner apex ( Fig. 3H View FIGURE 3 ); elytra usually without obvious setae, if present, then recumbent only, not recurved.......................... 3
3 Protibiae with apical digit long in both males and females, with a small comb of short, stout setae at right angle to digit in males or in same plane in females; apical spur present on outer apical edge in both males and females; protibiae usually with 3 teeth on outer edge, rarely with 2 teeth (e.g., L. monteithi View in CoL ); inner apical edge of protibiae deeply angulate; hypomeral striae absent; basal margin of pronotum evenly rounded........................................ L. monteithi View in CoL species group
- Protibiae with apical digit long in males and shorter in females, without a small comb of setae; apical spur present only in females, located apically; protibiae with 2 teeth on outer edge; inner apical edge of protibiae less angulate or rarely truncate; hypomeral striae usually present; basal margin of pronotum usually slightly angulate in the middle. L. australis View in CoL species group
4 Pygidium with a transverse sinuate fold, mostly in upper part and appearing as a duplication of basal margin; pygidium with or without a depression ( Fig. 1 View FIGURE 1 D–F)......................................................................... 5
- Pygidium without a transverse sinuate fold; pygidium always with a depression of various sorts or otherwise modified central area ( Fig. 2 View FIGURE 2 A–F)...................................................................................... 6
5 Pygidium with a large, shallow depressed central area that is reticulate and usually contrastingly matt, upper edge of depression gently concave ( Fig. 1D View FIGURE 1 ); protibiae with 2 or 3 teeth on outer edge, inner apical edge truncate; hypomeral striae absent; edge of head entirely bordered, dorsal part of eye moderate to wide in size; relatively large in length 3.5–6.5 mm ........................................................................................... L. ustulatus View in CoL species group
- Pygidium either without a depression ( Fig. 1E View FIGURE 1 ), or with a deeper, rather ovoid depression that is reticulate and contrastingly matt, and extends under the sharp, more concave upper edge (this depression has a continuous sharp edge in female L. storeyi View in CoL ) ( Fig. 1F View FIGURE 1 ); protibiae with 2 teeth on outer edge, inner apical edge deeply angulate; hypomeral striae present; edge of head bordered only between the eye canthus and the angulation of the clypeogenal suture, dorsal part of eye narrow in size; generally small in length 2.4–3.2 mm ............................................................ L. storeyi View in CoL species group
6 Pygidium with a large flat central area that is reticulate and contrastingly matt ( Fig. 2A View FIGURE 2 ); protibiae of male with short, broad apical digit and blade-like apical spur; male mesotibiae expanded towards the apex, with a small brush of setae along the expansion; hypomeral striae absent; elytral striae 8 obvious and curving inwards apically; size usually larger, length 3.5–5.2 mm ............................................................................... L. nitidus View in CoL species group
- Pygidium with a depression of various sorts ( Fig. 2 View FIGURE 2 B–F); protibiae of male with apical digit variously shaped but not as above, and apical spur present or absent; hypomeral striae usually present; elytral striae 8 usually not as obvious, less curving inwards apically; size usually smaller, length 1.8–3.8 mm ............................................................. 7
7 Pygidial depression without a well-defined lower lip, merging gradually with discal surface below and extending under basal margin ( Fig. 2B View FIGURE 2 ); elytral striae obsolete................................................. L. pisoniae View in CoL species group
- Pygidial depression variously shaped, with a defined lower lip ( Fig. 2 View FIGURE 2 C–F), EITHER somewhat transverse with only upper and lower lips well defined and usually sharp ( Fig. 2 View FIGURE 2 C–D) OR with rounded edges ( Fig. 2F View FIGURE 2 ) OR with continuous sharp margins, sometimes with a median tubercle ( Fig. 2E View FIGURE 2 ); elytral striae usually visible, although may only be lightly impressed......... 8
8 Pygidial depression somewhat transverse, with only upper and lower lips well defined and usually sharp, with or without a pit in the upper angle of pygidial depression ( Fig. 2 View FIGURE 2 C–D); inner apical edge of protibiae deeply angulate; male apical digit long and slender, as long as apical protibial tooth, apical spur absent................................................. 9
- Pygidial depression without a defined lower lip as above, but either with defined continuous sharp edges, or without any sharp edges, sometimes with a median tubercle ( Fig. 2 View FIGURE 2 E–F); inner apical edge of protibiae deeply angulate or truncate; male apical digit somewhat shorter and broader, usually shorter than apical protibial tooth, apical spur present or absent............. 10
9 Pygidial depression with a concave upper lip and straight lower lip, with a pit in the upper angle of pygidial depression ( Fig. 2C View FIGURE 2 ); head with obvious fine, recumbent setae............................................ L. furcifer View in CoL species group
- Pygidial depression with upper and lower lips of various shapes, without a pit in the upper angle Fig. 2D View FIGURE 2 ); head lacking setae.............................................................................. L. parapisoniae View in CoL species group
10 Pygidial depression with defined, continuous sharp edges, usually with a small tubercle within depression ( Fig. 2E View FIGURE 2 ); basal margin of pronotum usually rounded.................................................... L. pygmaeus View in CoL species group
- Pygidial depression without defined sharp edges, never with a tubercle within the depression ( Fig. 2F View FIGURE 2 ); basal margin of pronotum usually slightly angulate....................................................... L. palumensis View in CoL species group
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.