Genus Parasilvanus Grouvelle

ColeopteraTarsen-5-5-5Cucujidae_fhlSilvanidaeSilvaninae@en
By D.G.H. Halstead (rearranged by Arved Lompe)
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 >>>"F:\taxa\coleo\scans\halstead1973 Silvanus.pdf"
#1
mimosae Halstead, 1973Head and pronotum punctate-reticulate [Abb. 1]; elytra punctate-striate, all interstriae equally raised [Abb. 2]; head and pronotum as in [Abb. 3].
parasilvanus_mimosae_ms.gif
Abb. 1
parasilvanus_mimosae_fld.gif
Abb. 2
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Abb. 3
→ 2-Head and pronotum not punctate-reticulate, either interspaces much broader or puncturation entirely different; elytra different; head and pronotum not as above.
#2
fairmairei Grouvelle, 1882Head appearing finely granulate due to densely reticulate interspaces, clypeus and frontal triangle with sparse puncturation [Abb. 4] different from that near eyes; without a fovea at clypeogenal emargination; 8th antennal segment as in [Abb. 5]; form of head and pronotum characteristic [Abb. 6]. Habitus [Abb. 7].
parasilvanus_fairmairei_ms.gif
Abb. 4
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Abb. 5
parasilvanus_fairmairei_vk.gif
Abb. 6
parasilvanus_fairmairei_hab.jpg
Abb. 7
→ 3-Head not appearing finely granulate, puncturation of frontal triangle not obviously different from that of rest of head; with a fovea at clypeogenal emargination; antennae as in [Abb. 8]; pronotum moderately to extremely elongate.
parasilvanus_ocellatus_k.gif
Abb. 8
#3
pulcher (Grouvelle, 1905)Extremely elongate species; form of head and pronotum diagnostic, pronotum behind anterior angles, broadest at basal third [Abb. 9]. Length 3.42-4.81 mm.
parasilvanus_pulcher_vk.gif
Abb. 9
→ 4-Moderately elongate species; pronotum and head not as above, pronotum behind anterior angles, broadest at middle.
#4
tenuis (Grouvelle, 1889)Vertex of head with deep, obvious coarse punctures and fine setiferous punctures with slightly raised margins (slightly ocellate) [Abb. 10]; head slightly longer than broad (10.4-11/10); pronotum elongate (18-19/10), disc without obvious foveae (slight depressions are present) [Abb. 11].
parasilvanus_tenuis_ms.gif
Abb. 10
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Abb. 11
→ 5-Vertex of head with ocellate setiferous punctures dominant, coarse punctures present but less obvious; pronotal length/breadth 15-19/10, disc with shallow to deep lateral foveae, if with shallow foveae then head broader than long (11-12/10). #5 (4) Pronotum more elongate (16-19/10) with deep lateral foveae on disc; head often appearing elongate, although broader than long (10.1-10.4/10), [Abb. 12]; metasternal disc with well-defined lateral depressions and comparatively impunctate regions of caudal half obvious (only fine setiferous punctures present), interspaces dull to moderately shining; in ♂, metatibia with a lamellate tooth towards apex [Abb. 13] and elytra with sutural stria depressed near apical fourth [Abb. 12]. ...ocellatus (Grouvelle, 1889)
parasilvanus_ocellatus_hab.gif
Abb. 12
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Abb. 13
parasilvanus_ocellatus_hab.gif
Abb. 12
oblitus (Grouvelle, 1909)-Pronotum less elongate (15-16/10) with shallow ill-defined lateral depressions on disc; head more obviously broader than long (11-12/10), [Abb. 14]; metasternal disc without distinct lateral depressions hence impunctate regions (as above) ill-defined, interspaces shining; in ♂, sutural stria of elytra and metatibia simple.
parasilvanus_oblitus_vk.gif
Abb. 14
Enthaltene Taxafairmairei mimosae oblitus pulcher tenuis
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