Genus Placonotus - African species Coleoptera - Cucujidae - Laemophloeidae - Placonotus
  By L.P. Lefkovitch (rearranged by Arved Lompe)
If you find any errors or omissions please mail me at mailbox@lompe.de
Lefkovitch, L.P. (1962): A revision of African Laemophloeinae (Coleoptera:Cucujidae) - Bulletin of the British Museum (Natural History) Entomology, 12(4):165-245 Private Datei: F:\taxa\coleo\scans\Lefkovitch1962 Laemophloeinae Afrika.pdf
#1 Anterior angles of pronotum acute [fig.1].

   ...2

PLACONOTUS TASTUS
fig.1
 
-- Anterior angles of pronotum rounded [fig.2].

   ...12

PLACONOTUS POLITISSIMUS
fig.2
 
#2 Black or reddish black in colour, without a lighter mark on each elytron; epistome truncate anteriorly.

   ...tastus Lefkovitch, 1962

 
-- 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

 
#3 Elytra unicolorous.

   ...4

 
-- Elytra with a lighter mark at basal third.

   ...11

 
#4 Smaller species (about 1,5-2 mm.); pronotum distinctly transverse and head punctate; elytra 2,5-3-0 times as long as their combined width.

   ...5

 
-- 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.

   ...6

 
#5 Epistome concave.

   ...dolce Lefkovitch, 1962

 
-- Epistome convex.

   ...mestus Lefkovitch, 1962)

 
#6 Disc of head impunctate but strongly reticulate.

   ...mossus Lefkovitch, 1962

 
-- Disc of head punctured.

   ...7

 
#7 Disc of head polygonally reticulate between punctures.

   ...donacioides (Wollaston)

 
-- Disc of head smooth or with irregular groove-like markings between punctures.

   ...8

 
#8 Elytra rounded together posteriorly [fig.3].

   ...majus Lefkovitch, 1962

PLACONOTUS MAJUS
fig.3
 
-- Elytra separately rounded to apico-sutural angle, semitruncate [fig.4]. Good characters for the separation of females have not been discovered.

   ...9

PLACONOTUS SUBTRUNCATUS
fig.4
 
#9 Habitus [fig.5]. Ventral claspers of male weakly developed [fig.6] [fig.7].

Meldungen in Google Earth anzeigen   ...ealaensis Lefkovitch, 1962

PLACONOTUS EALAENSIS
fig.5
PLACONOTUS EALAENSIS.GIF
fig.6
PLACONOTUS EALAENSIS
fig.7
 
-- Ventral claspers of male strongly developed.

   ...10

 
#10 Ventral claspers straight posteriorly; dorsal claspers incompletely divided, in shape together equivalent to a normal tenth tergite [fig.8].

   ...subtruncatus Lefkovitch, 1962

PLACONOTUS SUBTRUNCATUS.GIF
fig.8
 
-- Ventral claspers spatulate posteriorly; dorsal claspers completely divided except for a narrow strut anteriorly, posteriorly no broader than ventral claspers [fig.9].

   ...africanus Lefkovitch, 1962

PLACONOTUS AFRICANUS.GIF
fig.9
 
#11 Head and pronotum reddish brown.

   ...exornatus (Grouvelle)

 
-- Head and pronotum black.

   ...decoratus (Grouvelle)

 
#12 First visible abdominal sternite with femoral lines; pronotum convex between lateral lines; anterior angles of pronotum not produced [fig.2].

   ...politissimus (Wollaston)

PLACONOTUS POLITISSIMUS
fig.2
 
-- First visible abdominal sternite without femoral lines; pronotum almost flat between the lateral lines; anterior angles of pronotum somewhat produced.

   ...bolivari (Grouvelle)

 
  africanus
bolivari
decoratus
dolce
donacioides
ealaensis
exornatus
majus
mestus
mossus
politissimus
subtruncatus
tastus
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First prepared: 02.12.2019
Latest edit: 02.12.2019 - 18:04:22
Käfer Europas by Arved Lompe / Placonotus_afr by L.P. Lefkovitch
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