Ernobius Bestimmungstabelle

Gattung Ernobius

Coleoptera - Teredilia - Anobiidae

By Colin Johnson (Rearranged by: Arved Lompe)
If you find any errors or omissions please mail me at mailbox@lompe.de

Johnson, C. (1975): A Review of the palaearctic Species of the Genus Ernobius Thomson - Ent.Bl. 71(2):65-93 Private Datei: F:\taxa\coleo\scans\Johnson1975 Ernobius.pdf

Species not listed in this key

...99

Antennal segments 6-8 very short and slender, together upto half the length of segment 9, and shorter than 3-5 combined (sometimes almost as long in laticollis ♀).

...2

Antennal segments 6-8 never so short, frequently quite thick, together always longer than segment 9, and as long or longer than 3-5 combined.

...13

Very small and narrow brown species, 1.8-2.8 mm.

...3

Larger and broader species, over 3 mm in length.

...4

Front angles of the pronotum distinct, due to the sides being strongly sinuate (as in longicornis); pronotum not explanate at the sides. Aedeagus [fig.1].

...juniperi Chob.

fig.1

Front angles of the pronotum effaced, the sides close to them not sinuate; pronotum explanate at the sides. Aedeagus [fig.2].

...cupressi Chob.

fig.2

Larger species, 4.5-7.0 mm; surface rather dull; pronotum and elytra coarsely and closely granulate, the granules weakly punctate, the sculpture similar on both; elytra strongly impressed near the shoulders and on each side of the scutellum; dark reddish-brown species.

...5

Smaller species, 3.0-4.0 mm; surface more shining; pronotum with less coarse and conspicuously punctate granules; elytra more finely and sparsely granulate or granulo-punctate, the sculpture dissimilar on both; elytra not or feebly impressed; colour typically entirely black, the elytra often lighter, ocasionally entirely dark brown.

...6

Aedeagus [fig.3].

...laticollis Pic

fig.3

Aedeagus [fig.4].

...reitteri Pic

fig.4

Base of the pronotum with a transverse depression.

...7

Base of the pronotum without a transverse depression.

...9

Front angles of the pronotum distinct, due to the sides before them being strongly sinuate [fig.5] [fig.6]; elytra more elongate, c. 2.5 times as long as broad [fig.7]; antennae reddish-brown; pronotum as broad (♀) or narrower (♂) than the elytra. Aedeagus [fig.8] [fig.9].

...longicornis (Sturm, 1837)

Front angles of the pronotum effaced, the sides not sinuate; elytra not so elongate, c. twice as long as broad; antennae usually black.

...8

Pronotum narrower than the elytra; eyes strongly protruding. Aedeagus [fig.10].

...freudei Lohse

fig.10

Pronotum as broad as the elytra; eyes not quite so strongly protruding. Habitus [fig.11]. Aedeagus [fig.12].

...nigrinus (Sturm, 1837)

fig.11

fig.12

Entirely black, except for the elytral apex which is bright reddish-yellow; antennae black, segment 10 obvious bent; segments 6-8 extremely short in ♂. Aedeagus [fig.13].

...pardoi Espanol

fig.13

Elytra always unicolorous, various shades of brown; antennae usually brown, very rarely black, segment 10 not or very feebly bent, 6-8 not so short.

...10

#10

Base of the pronotum clearly sinuate on each side of the middle, the curvature thus uneven; pronotum sparsely covered with larger umbilicate punctures which are predominantly C-shaped, the surface shining.

...11

Base of the pronotum not or barely sinuate on each side of the middle, the base and sides thus evenly and continuously curved; pronotum very closely covered with finer umbilicate punctures which are almost circular, the surface somewhat dull; brown species.

...12

#11

Bright yellowish-brown, antennae included; sides of the pronotum less curved apically, narrowly explanate. Aedeagus [fig.14].

...kiesenwetteri Schilsky, 1899

fig.14

Brown to brown-black, antennae included; sides of the pronotum more curved apically, narrowly explanate. Aedeagus [fig.15].

...pallidipennis Pic

fig.15

#12

Size larger, 4 mm. Aedeagus [fig.16].

...subopacus Pic

Size smaller, 3.0-3.5 mm. Aedeagus [fig.17].

...syriacus Pic

fig.16

fig.17

#13

Dorsal surface of tarsal segment 4 with the apical excavation not or barely surpassing the middle [fig.18]; mostly larger species, 4.0-6.0 mm, very rarely as small as 3.0 mm. Tarsal segment 5 long and narrow in most species. Aedeagus of a similar basic form [fig.19].

...14

fig.18

fig.19

Dorsal surface of tarsal segment 4 with the apical excavation clearly surpassing the middle, generally occupying at least three-quarters of the length of the segment [fig.20] [fig.21]; mostly smaller species, 2.0- 4.0 mm, very rarely upto 5.0 mm. Aedeagi of various different forms.

...19

fig.20

fig.21

#14

Front tibiae conspicuously curved inwards (more so in ♂), at least in their basal half, the apex not or barely turned outwards.

...15

Front tibiae straight, the apex clearly turned outwards.

...16

#15

Pronotum broadly expIanate at the sides; antennae rather short and thick, segments 6-8 from one to 1.5 times as long as broad; body rather slender; colour usually very dark brown; average size 4.0 mm; tarsal segment 5 long in ♂, short in ♀. Aedeagus [fig.19]. North Europe.

...explanatus (Mannh.)

fig.19

Hooked paramere without a median bulge [fig.22]. Central Europe ssp.

...phobos Gottw.

fig.22

Pronotum narrowly explanate at the sides; antennae long and slender, segments 6-8 at least twice as long as broad; body rather broad; colour yellowish / reddish-brown; average size 5.0 mm; tarsal segment 5 long in both sexes. Aedeagus [fig.23].

...gigas Mulsant & Rey, 1863

fig.23

#16

Bright yellowish-brown, very shining; pronotum sparsely covered with umbilicate punctures which are C-shaped to nearly circular; pronotal disc longitudinally convex; antennae similar to reflexus. Aedeagus [fig.24].

...lucidus (Muls. & Rey)

fig.24

Reddish-brown species, not so brilliantly shining; pronotum very closely covered with finer punctures or granules, umbilicate or otherwise, which are predominantly circular; pronotal disc longitudinally flatter.

...17

#17

Size larger, 5.0-6.0 mm; pronotum very broadly explanate at the sides, which are strongly rounded like the base; pronotal punctures conspicuously umbilicate, more-or-less circular; antenna! segment 8 over half (usually two thirds) the length of 9; pubescence longer, more golden and less depressed than in the next species. Aedeagus [fig.25].

...reflexus (Muls. & Rey)

fig.25

Size smaller, 3.0-5.0 mm; pronotum not or only narrowly explanate at the sides, which are not as strongly rounded; pronotal sculpture more granular, not or weakly umbilicate; antenna! segment 8 under half the length of 9 .

...18

#18

Pronotum finely granulate, not umbilicate [fig.26]. Aedeagus [fig.27] [fig.28].

...mollis (L., 1758)

fig.26

fig.27

fig.28

Pronotum coarsely granulate, the granules weakly but distinctly umbilicate. Pointed paramere [fig.29]. Tenerife . mollis ssp.

...espanoli Johnson, 1975

fig.29

#19

Posterior margin of pronotum strongly oblique on either side, hind angles some distance from elytral base [fig.30]; pronotum narrower than elytra, front angles sinuate and distinct, dorsum black except for the brown elytra (♂), pronotum as broad as elytra, front angles effaced and not sinuate, dorsum unicolorous brown (♀); tarsal segment 5 short and broad. Aedeagus [fig.31].

...angusticollis (Ratz., 1847)

[fig.32]

fig.30

fig.31

fig.32

Posterior margin of pronotum more-or-less straight, never so strongly oblique on each side, the hind angles more-or-less touching the elytral base; most species entirely brown in both sexes.

...20

#20

Pronotum very dull, with strong reticulation, very closely covered with fine granules which are circular and barely umbilicate. Antenna! segment 8 generally over three-quarters (very rarely barely over half) the length of 9; body long and narrow; pronotum narrower than the elytra (♂), or as broad (♀). Aedeagus [fig.33].

...pruinosus (Muls. Rey)

fig.33

Pronotum more shining, without or rarely with weaker reticulation, covered with somewhat larger circular or C-shaped umbilicate punctures / granules.

...21

#21

Antenna! segments 7 and 8 somewhat similar to 9-11, ie. segment 8 is usually at least three-quarters the length of 9; body long and narrow in one species; pronotum narrower than elytra (♂) or as broad (♀).

...22

Antenna! segments 7 and 8 different from 9-11 , ie. segment 8. barely exceeds half the length of 9; body always shorter.

...23

#22

Size smaller, 2.0-3.0 mm; body long and narrow; pronotum somewhat sparsely umbilicate-granulate, these almost circular; antennae and tarsi more slender. Aedeagus [fig.34] [fig.35].

...abietinus (Gyll., 1808)

fig.34

fig.35

Size larger, 3.3-4.0 mm; body shorter and broader; pronotum densely umbilicate-granulate, these circular; antennae and tarsi thicker and broader. Aedeagus [fig.36].

...oxycedri Reitt.

fig.36

#23

Tarsal segment 5 rather short and broad, the protruding part barely exceeding 1.5 times its greatest breadth in length [fig.20]; tarsi more-or- less broad.

...24

fig.20

Tarsal segment 5 long and slender, the protruding part 2-3 times its greatest breadth in length [fig.21]; tarsi narrow.

...30

fig.21

#24

Tarsal segment 5 very short, the protruding part about as long as its greatest breadth; antenna! segment 9 as long as segments 6-8 combined. Habitus [fig.37], detail of front body [fig.38]. Aedeagus [fig.39].

...abietis (F., 1792)

fig.37

fig.38

fig.39

Tarsal segment 5 not so short, the protruding part almost 1.5 times as long as its greatest breadth; antenna! segment 9 shorter in length than 6-8 combined, generally only as long as 7-8.

...25

#25

East Palaearctic species (Japan); antennae short, rather slender in both sexes. Aedeagus [fig.40].

...curticollis Pic

fig.40

West Palaearctic species; antennae longer and thicker, often considerably so in the male.

...26

#26

Elytra very coarsely and densely granulate.

...27

Elytra finely and sparsely granulo-punctate.

...28

#27

Elytral pubescence rather long and semi-erect; pronotum shining, closely covered with umbilicate granules which tend to be more C-shaped than circular, except towards the front; antennal segment 6 shorter than 7. Aedeagus [fig.41].

...robusticornis Maran

fig.41

Elytral pubescence shorter and much more depressed as in most species; pronotum rather dull, very closely covered with smaller, umbilicate and circular granules which are very closely packed together; antenna! segment 6 about as long as 7. Aedeagus [fig.42].

...kaiIidisi Johnson, 1975

fig.42

#28

Elytra unicolorous dark brown, its pubescence more-or-less directed rearwards; head almost as broad as the pronotum, the pronotum narrower than the elytra in the ♂. Aedeagus [fig.43].

...29

fig.43

Elytra brown with a black stripe down the suture; elytral pubescence directed inwards from the sides and sutural area, more-or-less rearwards between; head narrower than the pronotum which is as broad as the elytra in the ♂. Aedeagus [fig.44].

...anatoIicus Johnson, 1975

fig.44

#29

Size smaller, 3.0-4.0 mm; antenna! segments shorter [fig.45]; pronotum closely covered with umbilicate granules. Aedeagus [fig.43]. Europe.

...mulsanti Kiesw., 1877

fig.45

fig.43

Size larger, 4.0-5.5 mm; antenna! segments more elongate [fig.46]; pronotum very densely packed with umbilicate granules. North Africa mulsanti ssp.

...fructuum Peyerh.

fig.46

#30

Major part of the pronotum conspicuously punctured; towards the front there are indistinct C-shaped granules around the punctures; body long and narrow; pronotum narrower than the elytra (♀); dark brown. Cyprus.

...madoni Pic

Pronotum clearly granulate, the granules generally obviously umbilicate; body shorter and broader; chiefly paler brown species.

...31

#31

Umbilicate (-punctate) granules on the centre of the pronotum predominantly C-shaped.

...32

Umbilicate granules on the centre of the pronotum predominantly circular.

...33

#32

Bright yellowish-brown, very shining as a rule; pronotum broadly explanate at the sides, the hind angles strongly rounded off; elytral pubescence somewhat long and semi-erect; antennae rather long and thick. Aedeagus [fig.47].

...rufus (Illig.)

fig.47

Reddish-brown, somewhat dull, pronotum narrowly explanate at the sides, the hind angles more angularly curved [fig.48]; elytral pubescence shorter and more depressed; antennae shorter and more slender. Aedeagus [fig.49] [fig.50].

...pini (Sturm, 1837)

fig.48

fig.49

fig.50

#33

Pronotum reticulate, broadly explanate at the sides, including the front angles which are somewhat prominent; elytra dull, finely and very closely granulate; antenna! segment 9 longer than 7 and 8 together, but shorter than 6-8 together, Aedeagus [fig.51].

...impressithorax Pic

fig.51

Pronotum at the most narrowly explanate at the sides, the explanation having petered out at the front angles, which are effaced; elytra more shining, not quite so closely granulate; antenna} segment 9 only as long as segments 7 and 8 together.

...34

#34

Average ,size larger, 3.0-3.5 mm, very rarely down to 2.5 mm; pronotum generally somewhat dull due to being finely but clearly reticulate; pronotum closely covered with fine umbilicate granules. Aedeagus [fig.52].

...oertzeni Schils.

fig.52

Average size smaller, 1.7-3.0 mm; pronotum usually rather shining, only very rarely reticulate.

...35

#35

Sides of the pronotum clearly explanate and thus somewhat flattened almost upto the front angles; pronotum shorter, generally with larger and more scattered umbilicate granules. Aedeagus [fig.53].

...parens Muls. & Rey

fig.53

Sides of the pronotum hardly explanate at any rate in front of the middle, not or barely flattened except near the hind angles; pronotum generally a trifle longer, with slightly smaller and more dense umbilicate granules.

...36

#36

Antennae [fig.54] slightly thicker; pronotum conspicuously umbilicate; dorsum black, except for the brown elytra (♂), dorsum brown (♀). Aedeagus [fig.55].

...gallicus Johnson, 1975