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Genus Placonotus - African species

Coleoptera › Cucujidae › Laemophloeidae › Placonotus
By L.P. Lefkovitch (rearranged by Arved Lompe)
Lefkovitch, L.P. (1962): A revision of African Laemophloeinae (Coleoptera:Cucujidae) - Bulletin of the British Museum (Natural History) Entomology, 12(4):165-245 >>>"F:\taxa\coleo\scans\Lefkovitch1962 Laemophloeinae Afrika.pdf"
#1
→ 2Anterior angles of pronotum acute [Abb. 1].
placonotus_tastus_hsch.gif
Abb. 1
→ 12-Anterior angles of pronotum rounded [Abb. 2].
placonotus_politissimus_hsch.gif
Abb. 2
#2
tastus Lefkovitch, 1962Black or reddish black in colour, without a lighter mark on each elytron; epistome truncate anteriorly.
→ 3-Head and pronotum brown or yellowish in colour, or if black, then each elytron with a lighter mark at basal third; epistome emarginate anteriorly.
#3
→ 4Elytra unicolorous.
→ 11-Elytra with a lighter mark at basal third.
#4
→ 5Smaller species (about 1,5-2 mm.); pronotum distinctly transverse and head punctate; elytra 2,5-3-0 times as long as their combined width.
→ 6-Larger species (about 1,8-2,3 mm.); pronotum about as broad as long or if transverse, then head impunctate; elytra usually less than 2,5 times as long as their combined width.
#5
dolce Lefkovitch, 1962Epistome concave.
mestus Lefkovitch, 1962)-Epistome convex.
#6
mossus Lefkovitch, 1962Disc of head impunctate but strongly reticulate.
→ 7-Disc of head punctured.
#7
donacioides (Wollaston)Disc of head polygonally reticulate between punctures.
→ 8-Disc of head smooth or with irregular groove-like markings between punctures.
#8
majus Lefkovitch, 1962Elytra rounded together posteriorly [Abb. 3].
placonotus_majus_fld.gif
Abb. 3
→ 9-Elytra separately rounded to apico-sutural angle, semitruncate [Abb. 4]. Good characters for the separation of females have not been discovered.
placonotus_subtruncatus_fld.gif
Abb. 4
#9
ealaensis Lefkovitch, 1962Habitus [Abb. 5]. Ventral claspers of male weakly developed [Abb. 6] [Abb. 7].
placonotus_ealaensis_m_hab.jpg
Abb. 5
placonotus_ealaensis.gif
Abb. 6
placonotus_ealaensis.jpg
Abb. 7
→ 10-Ventral claspers of male strongly developed.
#10
subtruncatus Lefkovitch, 1962Ventral claspers straight posteriorly; dorsal claspers incompletely divided, in shape together equivalent to a normal tenth tergite [Abb. 8].
placonotus_subtruncatus.gif
Abb. 8
africanus Lefkovitch, 1962-Ventral claspers spatulate posteriorly; dorsal claspers completely divided except for a narrow strut anteriorly, posteriorly no broader than ventral claspers [Abb. 9].
placonotus_africanus.gif
Abb. 9
#11
exornatus (Grouvelle)Head and pronotum reddish brown.
decoratus (Grouvelle)-Head and pronotum black.
#12
politissimus (Wollaston)First visible abdominal sternite with femoral lines; pronotum convex between lateral lines; anterior angles of pronotum not produced [Abb. 2].
placonotus_politissimus_hsch.gif
Abb. 2
bolivari (Grouvelle)-First visible abdominal sternite without femoral lines ; pronotum almost flat between the lateral lines ; anterior angles of pronotum somewhat produced.
Enthaltene Taxaafricanus ↧bolivari ↧decoratus ↧dolce ↧donacioides ↧ealaensis ↧exornatus ↧majus ↧mestus ↧mossus ↧politissimus ↧subtruncatus ↧tastus ↧
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