Silvaninae Bestimmungstabelle

Subfamily Silvaninae

Coleoptera - Tarsen-5-5-5 - Cucujidae_fhl - Silvanidae

By D:G:H: Halstead (rearranged by Arved Lompe)
If you find any errors or omissions please mail me at mailbox@lompe.de

Halstead, D.G.H. (1973 ): A Revision of the Genus Silvanus Latreille (s. l.) (Coleoptera : Silvanidae) - Entomology - Bulletin of the British Museum (Natural History), 29:39-112 Private Datei: F:\taxa\coleo\scans\halstead1973 Silvanus.pdf

Antennal segment 8 much narrower than and obviously different from 7 [fig.1]; temple well-defined. Apical segment of labial palp smaller than previous segment [fig.2]; apex of prosternal process only slightly broader than apex of mesosternum [fig.3]. Habitus [fig.4] [fig.5]. Ethiopian.

...Parasilvanus Grouvelle, 1912

Antennal segment 8 not much narrower than 7, usually similar to it; temple well- to ill-defined or absent.

...2

Elytral stria 7 moderately to strongly carinate; prosternal process and labial palps as in Parasilvanus; antennae may have spines on margins of segments 9 and 10 [fig.6]. Oriental.

...Protosilvanus Grouvelle

fig.6

Elytral stria 7 not carinate; apex of prosternal process much broader than apex of mesosternum [fig.7]; apical segment of labial palp larger than previous segment [fig.8]; antennae without spines.

...3

fig.7

fig.8

Eyes large; temple forming a narrow shelf for eye [fig.9]; puncturation much coarser on pronotum than on head; anterior angles of pronotum little produced, lateral; cuticle shining; femoral lines open (see below); ♂ genitalia with parameres as in [fig.10]. Oriental.

...Silvanoides Halstead, 1973

fig.9

fig.10

Eye and temple form not as above, without other characters combined.

...4

Femoral lines open, i.e. diverging from margin of metacoxal cavities [fig.11]; anterior margin of pronotum with lateral thirds or less, obviously sloped backwards to anterior angles [fig.12]. ♂ genitalia, aedeagus with median lobe rounded to very slightly tapered at apex, parameres elongate with long setae, not forked at apex [fig.13]. Nearctic and Neotropical.

...Cathartosilvanus Grouvelle

fig.11

fig.12

fig.13

Femoral lines closed, i.e. forming margin of metacoxal cavities [fig.7]; anterior margin of pronotum not as above.

...5

fig.7

Genae prominent laterally, triangular; anterior angles of pronotum strongly produced anteriorly, anterior margin concave [fig.14]. ♂ genitalia as or similar to [fig.15], parameres rather spatulate at apex; ♂ sternites 8 and 9 as in [fig.16]. New Guinea and New Ireland.

...Calpus Halstead, 1973

fig.14

fig.15

fig.16

Genae not prominent laterally; if anterior angles of pronotum concave on anterior margin, then only moderately produced anteriorly.

...6

Pronotum as in [fig.17], with side margin usually slightly convex where it forms anterior angle; head and pronotum dull, puncturation dense, setiferous punctures ocellate; elytral epipleura with a high inner rim; ♂ genitalia, apex of median lobe extremely broad, parameres as in [fig.18]. Nearctic and Neotropical.

...Pensus Halstead, 1973

fig.17

fig.18

Pronotum not as above; head and pronotum dull or shining, setiferous punctures not or slightly ocellate; elytral epipleura without a high inner rim; ♂ genitalia, apex of median lobe not extremely broad, parameres forked at apex [fig.19]. World.

...Silvanus Latr.

fig.19

Calpus
Cathartosilvanus
Parasilvanus
Pensus

Protosilvanus
Silvanoides
Silvanus

First prepared: :H: Halstead (rearranged by Arved Lompe)

Käfer Europas by Arved Lompe / Silvaninae by D:G:H: Halstead
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