Genus Sepedophilus Gistel (Conosoma Motsch.) Coleoptera - Staphylinidae - Tachyporinae
  By Arved Lompe (after G.A. Lohse, M. Schülke)
Translated by: Mike Hackston
If you find any errors or omissions please mail me at mailbox@lompe.de
  Easily recognised from the other genera in the subfamily by the densely and finely hairy body. The abdomen is conical, markedly tapering to the tip and is often only bordered on the front segments. The tarsi are slender and long; hind tarsi as long as or longer than the hind tibia. Legs completely yellow; antennae yellow at least towards the base. The species are found under mouldy bark and in wood, amongst decaying leaves and flood debris. C. testaceum has often been found in underground nests. While preparing the genitalia the inner sac of the aedeagus sometimes partly protrudes. If this happens what you see will be very different from the diagrams presented here.
#1 Elytra and the exposed segments of the abdomen with long black bristles towards the sides. Black species with distinct golden yellow hair on the upper surface. Each elytron with a transverse yellowish red patch towards the base which usually broadly join across the suture [fig.1]. Length 2.0-2.5 mm. Widely distributed, but usually rare; associated with rotting hardwood.

Meldungen in Google Earth anzeigen   ...bipunctatus (Gravenhorst 1802)

SEPEDOPHILUS BIPUNCTATUS
fig.1
 
-- Elytra at most with only short, inconspicuous hairs towards the sides.

   ...2

 
#2 Elytra with a ± distinct reddish or yellowish patch in the front half.

   ...3

 
-- Elytra uniformly coloured, at most indistinctly darker along the suture and towards the sides.

   ...6

 
#3 Elytra (measured along the suture) scarcely longer than the pronotum [fig.2]. Exposed tergites 2-4 with long black bristles towards the sides and rear (take care as they easily break off). Black species; elytra with a transverse, rectangular yellowish-red marking which doesn't extend to the sides or to the suture.

   ...4


- Elytra significantly longer than the pronotum. Exposed tergites 2-4 without long bristles along the hind margin but with a few shorter ones along the sides.

   ...5

SEPEDOPHILUS BIPUSTULATUS
fig.2
 
#4 Rather larger species, 4.0-5.3 mm. Humeral marking on the elytra larger and more than a third the length of the suture. Punctures on the elytra more dense. ♂: sixth visible sternite rather deeply notched on the hind margin [fig.3]; aedeagus about 1.35-1.45 mm long [fig.4]; parameres longer [fig.5]. South eastern species. In Central Europe particularly in the south east (Bavaria, Bohemia, Austria, Slovakia) in parkland on bracket fungi. Formerly the species has been taken in Denmark. Confirmed records from the west and north of Central Europe are only from the Rhineland-Pfalz region, as records for this species usually refer to the following one.

Meldungen in Google Earth anzeigen   ...bipustulatus (Gravenhorst, 1802)

SEPEDOPHILUS BIPUSTULATUS
fig.3
SEPEDOPHILUS BIPUSTULATUS.JPG
fig.4
SEPEDOPHILUS BIPUSTULATUS
fig.5
-- Somewhat smaller species, 3.8-5.0 mm. Humeral marking on the elytra smaller, only about a third of the length of the elytra. Punctures on the elytra more dispersed. ♂: sixth visible sternite less deeply notched at the tip [fig.6]; aedeagus smaller, 1.25-1.35 mm. long; parameres shorter [fig.7]. Widespread Palaearctic species. Described from Lithuania but rarely collected there. Confirmed records are from around the Baltic, although its presence in north east Central Europe and Scandinavia cannot be ruled out. Ecology unknown but probably on bracket fungi like bipustulatus.

   ...wankowiczi (Pandellé, 1869)

SEPEDOPHILUS WANKOWICZI
fig.6
SEPEDOPHILUS WANKOWICZI.GIF
fig.7
#5 Smaller species, 3.0-3.5 mm. The hind edge of the pronotum is evenly curved; the hind angles are blunt and scarcely extended backwards; pronotum more convex in section. Upper surface with brownish-yellow hairs. Antennae short with the second to last segment almost broader than long. Black with the hind margin and hind angles of the pronotum ± reddish; elytra with an indistinctly edged large red basal marking which extends to the sides and beyond half the length of the elytra. Scattered and rare in the middle and south of Central Europe (Baden-Württemberg (Karlsruhe)).

   ...binotatus (Gravenhorst, 1802)

 
-- Larger species, 4-5 mm [fig.8]. The hind margin of the pronotum has an even lobe in the middle in front of the scutellum and the hind angles project backwards; the pronotum is flatter in section. Upper surface densely grey-hairy. Antennae longer and more slender with the second to last segment not broader than long. Black species with the sides of the pronotum clearly yellowish particularly in the rear half. Elytra either with a reddish-yellow marking at the base which does not extend to the suture or the sides or half way back, or they are distinctly paler in colour than the rest of the upper surface. In the latter case the base of the elytra is pale right across and extends back to the rear of the suture forming a sharp angle. Transitional forms occur between these extremes but in all of them the area around the scutellum is usually dark. Aedeagus [fig.9] [fig.10]. The commonest of the bicoloured species..

Meldungen in Google Earth anzeigen   ...littoreus (L., 1758)

SEPEDOPHILUS LITTOREUS
fig.8
SEPEDOPHILUS LITTOREUS.GIF
fig.9
SEPEDOPHILUS LITTOREUS
fig.10
#6 Pronotum with the microscopic sculpture very dispersed or absent. Antennae short with segments 8-10 clearly broader than long [fig.11]. Smaller species, 2.0-3.2 mm.

   ...12

SEPEDOPHILUS NIGRIPENNIS
fig.11
 
-- Pronotum with a close transverse microscopic sculpture. Segments 8-10 of the antennae at most only slightly broader than long. Length 2.5-5 mm.

   ...7

 
#7 Antennae less elongate with segment 7 not longer than its apical width; segments 8-10 clearly broader than long.

   ...8

 
-- Antennae more elongate with segment seven clearly longer than its apical breadth and segments 8-19 not broader than long. Upper surface uniformly yellowish-red to blackish-brown or blackish-brown with reddish elytra. Larger on average. Male: front tarsi clearly dilated; aedeagus larger with various inner chitinous armature.

   ...9

 
#8 Smaller species, 2.5-3.5 mm. Abdomen with longer bristles at the sides. Middle part of the antennae brown. Elytra about as long as the pronotum. Pronotum and elytra very finely and quite densely punctured. Black with the hind margin of the pronotum, the elytra and the exposed tergites narrowly paler translucent. Not uncommon and widely distributed.

Meldungen in Google Earth anzeigen   ...immaculatus (Stephens, 1832)

 
-- Larger species, 3.5-4.5 mm. Upper surface uniformly brownish-black [fig.12]. Exposed segments of the abdomen finely bristled. ♂: front tarsi slightly dilated [fig.13]; sternite 6 with a broad and even incision on the hind edge [fig.14]; aedeagus small [fig.15] [fig.16] with relatively simply constructed ejaculatory duct [fig.17]; basal part of the inner sac [fig.18]. Widely distributed and generally common, often under bark or in rotting wood.

Meldungen in Google Earth anzeigen   ...testaceus (F., 1792)

SEPEDOPHILUS TESTACEUS
fig.12
SEPEDOPHILUS TESTACEUS
fig.13
SEPEDOPHILUS TESTACEUS
fig.14
SEPEDOPHILUS TESTACEUS.GIF
fig.15
SEPEDOPHILUS TESTACEUS3
fig.16
SEPEDOPHILUS TESTACEUS
fig.17
SEPEDOPHILUS TESTACEUS
fig.18
#9 Body usually ± distinctly two-coloured with the head, pronotum and abdomen blackish-brown and the elytra dark reddish brown with the sutural angle and the sides darker. Some specimens are however more or less uniform [fig.19]. Exposed segments of the abdomen with long strong bristles at the sides. ♂: front tarsi distinctly dilated [fig.20]; sternite six very elongate with a characteristic even and narrow incision on the hind margin [fig.21]; aedeagus large [fig.22] [fig.23] with a simple ejaculatory duct; basal part of the inner sac [fig.24]. Length 3.8-4.8 mm. Widely distributed and generally common. Differing from testaceus by being often found in leaf litter, but also found in dead wood.

Meldungen in Google Earth anzeigen   ...marshami (Stephens, 1832)

SEPEDOPHILUS MARSHAMI
fig.19
SEPEDOPHILUS MARSHAMI
fig.20
SEPEDOPHILUS MARSHAMI
fig.21
SEPEDOPHILUS MARSHAMI.GIF
fig.22
SEPEDOPHILUS MARSHAMI
fig.23
SEPEDOPHILUS MARSHAMI
fig.24
-- At least the head and pronotum are uniformly yellowish-red to blackish-brown. Elytra never significantly paler. ♂: sternite six shorter with a broad incision on the hind margin. Aedeagus with the inner structure otherwise.

   ...10

 
#10 Upper surface uniformly brown to black. Punctures of the pronotum dispersed. Abdomen with the lateral bristles very short. Female: front tarsi scarcely dilated. ♂: front tarsi clearly dilated [fig.25]; sixth sternite short [fig.26], aedeagus large and robust [fig.27] with the tube dilated, trumpet-like with distinctly sclerotised hooked tips; parameres clearly exceeding the median lobe of the aedeagus; basal part of the inner sac [fig.28]. Length 3.9-4.9 mm. Mainly montane in Central Europe, recorded from Bohemia, Slovakia, Germany (Thuringia, Lower Saxony and Bavaria), Austria (Tyrol, Styria) and Switzerland (Berne). In flood debris and on  Armillaria mellea. (strigosus J. Sahlb., stoeckli Lokay).

   ...constans (Fowler, 1888)

SEPEDOPHILUS CONSTANS
fig.25
SEPEDOPHILUS CONSTANS
fig.26
SEPEDOPHILUS CONSTANS.GIF
fig.27
SEPEDOPHILUS CONSTANS
fig.28
 
-- Upper surface uniformly brown to black or red with the base of the abdomen darkened. Punctures on the pronotum denser. Lateral bristles on the abdomen short. ♂: sixth sternite longer.

   ...11

 
#11 Head and pronotum yellowish-red. Abdomen ± darkened towards the base. Female: front tarsi clearly dilated. ♂: front tarsi very strongly dilated [fig.29]; sixth sternite with a deep incision [fig.30], aedeagus very large [fig.31], with long ejaculatory duct with a distinctly sclerotised, rounded tip; parameres reaching considerably beyond the median lobe of the aedeagus; basal part of the inner sac [fig.32]. Length 4.1-4.9 mm. Isolated records from Bohemia, Moravia, Slovakia, Austria (Burgenland) and Germany (Saxony, Brandenburg, Mecklenburg-West Pomerania and North Rhine-Westphalia). (lokayi (Smet., 1969))

   ...transcaspicus (Bernhauer, 1917)

SEPEDOPHILUS LOKAYI
fig.29
SEPEDOPHILUS LOKAYI
fig.30
SEPEDOPHILUS LOKAYI.GIF
fig.31
SEPEDOPHILUS TRANSCASPICUS
fig.32
-- Upper surface uniformly brown to blackish-brown. ♂: front tarsi less strongly dilated; sixth sternite with a shallow incision [fig.33]; aedeagus smaller and narrower [fig.34] with a simple ejaculatory duct without a strongly sclerotised tip; parameres scarcely longer than the median lobe; basal part of the inner sac [fig.35]. ♀: front tarsi not dilated. Length 4.3-5.1 mm. Western European species, recorded from Belgium and Great Britain, possibly extending into the west of Central Europe. In rotting wood and pine litter.

   ...lusitanicus Hammond, 1973

SEPEDOPHILUS LUSITANICUS
fig.33
SEPEDOPHILUS LUSITANICUS.GIF
fig.34
SEPEDOPHILUS LUSITANICUS
fig.35
#12 Antennae brown in the middle. Elytra about as long as the pronotum. Pronotum and elytra very finely and densely punctured. See immaculatus    >>>8  
-- Antennae uniformly yellow [fig.11]. Punctures on the pronotum ± dispersed. Elytra with deeper and denser punctures. Length 1.8-3.0 mm.

   ...13

SEPEDOPHILUS NIGRIPENNIS
fig.11
 
#13 Hind angles of the pronotum pointed when viewed obliquely from the side. Microscopic sculpture of the pronotum distinct, transversely reticulate.

   ...14

 
-- Hind angles of the pronotum blunt, right-angled [fig.36]. Microscopic sculpture of the pronotum very indistinct or patchy.

   ...15

SEPEDOPHILUS NIGRIPENNIS
fig.36
 
#14 Reddish brown species with the head and abdomen darker brown, the tergites broadly bordered reddish brown. Pronotum with a dense transversely reticulate microscopic sculpture, scarcely visible between the fine punctures. Hind margin of the fifth complete visible tergite without a membranous border. Aedeagus [fig.37]. At higher altitudes in the western Alps (Simplon, Mount Rosa etc.); has also been recorded from the Ötztal Alps. (monticola FHL. nec Woll.)

   ...doderoi (Gridelli, 1931)

SEPEDOPHILUS DODEROI.GIF
fig.37
 
-- Uniformly pitch black species with the hind margins of the elytra and pronotum translucently paler. Elytra very short with their length measured along the suture significantly shorter than the pronotum measured along the mid line. Hind margin of the pronotum sinuate near the sides. Hind angles of the pronotum projecting backwards, rounded and weakly pointed. Hind margin of the fifth complete tergite with a membranous border. ♂: aedeagus [fig.38]; sternite 8 with a weakly rounded incision at the base. Female: tergite 8 with a broader median incision, rounded at its base. Widely distributed and not uncommon. .

Meldungen in Google Earth anzeigen   ...pedicularius (Gravenhorst, 1802)

SEPEDOPHILUS PEDICULARIUS.GIF
fig.38
 
#15 Uniformly pitch black species with the hind margins of the elytra and pronotum translucently paler. Pronotum without any trace of a leathery texture. Elytra relatively longer, the length along the suture about as long as the pronotum measured along the mid line. Hind margin of the pronotum not sinuous towards the sides. Hind angles of the pronotum not projecting backwards, weakly obtuse- to right-angled, broadly rounded. ♂: aedeagus [fig.39]; sternite 8 with a pointed incision. Female: tergite 8 with a narrower pointed incision. Widely distributed and not uncommon in the south.

Meldungen in Google Earth anzeigen   ...obtusus (Luze, 1902)

SEPEDOPHILUS OBTUSUS.GIF
fig.39
 
-- Yellowish-red species [fig.40], sometimes with the elytra and the base of the abdomen darkened. Pronotum with a weaker microscopic sculpture, which is very weak in the front half, not forming a closed network. Elytra 1.2 times as long as the pronotum measured along the mid line. Punctures on the elytra denser than both the preceding species and more clearly transversely ridged than in obtusus. Aedeagus [fig.41] [fig.42]. Length 2-3 mm. Atlantic-Mediterranean species. Distributed across the whole of Central Europe but rare, only commoner in the west and towards the coast.

Meldungen in Google Earth anzeigen   ...nigripennis (Stephens, 1832)

SEPEDOPHILUS NIGRIPENNIS
fig.40
SEPEDOPHILUS NIGRIPENNIS.GIF
fig.41
SEPEDOPHILUS NIGRIPENNIS
fig.42
--
 
  binotatus
bipunctatus
bipustulatus
constans
doderoi
immaculatus
littoreus
lusitanicus
marshami
nigripennis
obtusus
pedicularius
testaceus
transcaspicus
wankowiczi
     Creative Commons Lizenzvertrag
First prepared: 10.04.2010
Latest edit: 03.04.2017 - 15:02:36
Käfer Europas by By Arved Lompe and this translation by Mike Hackston
are licensed under a
Creative Commons International 4.0 License BY-SA
(Attribution-ShareAlike)