Bonsoir, chers collègues, les amis et tout de nouveau!
Bonsoir, mon cher
André! Me permettez aussi de participer à cette discussion. Probablement, l'information sera très utile à vous par la suite. Aussi, je demande pardon pour l'anglais. C'est le texte de l'original et je ne traduisais pas spécialement....
Alors:
J. Zídek, S. Pokorný, 2008. Illustrated keys to Palearctic Scarabaeus Linne (Scarabaeidae). ANIMMA.X No. 27. 28pp.
Key to subgenera (pour Scarabaeus ad.mea):
1. Either brachypterous with broadly oval elytra and contiguous mesocoxae or alate with nearly parallel-sided elytra and semi-contiguous mesocoxae, in latter case
protibia bears 6-8 lateral teeth but dorsal carina accompanies only 4
distal teeth.
Base of elytra sharp (
complete). Northern Africa and Near East. ... .. . ... ... ... . . . .. . ... . .. ... .. .. . ... .
Mnematium
-- Alate, with nearly parallel-sided elytra, semi-contiguous to non-contiguous mesocoxae and
base of elytra oblique (
incomplete).
Protibia with 4 strong lateral teeth proximally followed by fine serrations. ......................
2
2. Distal ends of meso- and metatibiae truncated at nearly right angles and terminal facets short, with tarsi inserted close to spurs. Tarsal claws always well developed, at least as long as terminal setae. Parameres weakly asymmetrical. .........................................................
Ateuchetus
--
Distal ends of meso- and metatibiae obliquely slanted at low angles and forming relatively long lobes with tarsal insertions distant from spurs. Parameres strongly asymmetrical. ..........................................................
3.
3. Head with distinct frontoclypeal carina that bears mesial pair of tubercles separated by sagittal gap (
in S. carinatus carina present even between tubercles).
Protibia at about midlength with mesial emargination bordered by minute tubercles .............................................
Scarabaeus s. str.
-- Head with sagittal frontoclypeal tubercle that usually extends forward.
Protibia lacks mesial emargination. ...............................................................................................
Mesoscarabaeus
Donc, ce un bien
s-g. Mesoscarabaeus sensu J. Zídek, S. Pokorný.
Pour
S. (M.) cristatus Fabricius 1775: 27; s.+w. Afghanistan, n. Arabia, n. Chad, Egypt, Eritrea, W. Ethiopia, Guinea, S. Iran, Israel, Mali, Niger, W. Pakistan, Senegal, Sudan, U.A.E.
Pour
S. (M.) bannuensis Janssens 1940: 31; S. Algeria, Arabia, n. Chad, S. Iran, S. Iraq, Kenya, n. Mali, Mauritania, Morocco, W. Pakistan, Tunisia.
Key to species of subgenus Mesoscarabaeus:
1. Protibia with pronounced denticles at
bases of three
proximal lateral teeth. ...................................................................................................
2
--
Protibia with pronounced denticle only at
base of proximalmost lateral tooth. ......................................................................................................
3
2. Head
vertex with conspicuous impression. Mesial margin of
protibia sparsely and coarsely serrate. Length 20-34 mm. ..........................................................
S. andrewesi
-- Head
vertex without impression. Mesial margin of
protibia densely and finely serrate. Length 22-30 mm. .....................................................................................
S . bannuensis
3. Head with frontal tubercle strong, sharp and well pronounced forward. Head
vertex with conspicuous impression. Ventral margin of
clypeus with sharp sagittal tooth. Profemur with
apical tooth on dorsal side.
Length 18-31 mm. ......................................................................................................................................................................................................
S. cristatus
-- Head with frontal tubercle weak, blunt and only slightly pronounced forward. Head
vertex without impression. Ventral margin of
clypeus without sagittal tooth. Profemur without
apical tooth on dorsal side......
4
4. Punctae of
pronotal disk smaller than largest granules near posterolateral angles. lmpunctate central track of
pronotum narrow, with poorly defined borders. Anterior termination of metasternal bulge between mesocoxae
inclined forward. Asian species occurring in India, Pakistan and S. Iran. Length 19-23 mm. .............................................................................................................
S. brahminus
-- Punctae of
pronotal disk markedly larger than largest granules near posterolateral angles. lmpunctate central track of
pronotum wide, with well defined borders. Anterior termination of metasternal bulge between
mesocoxae vertical. Afrotropical species extending into Palearctic region only in Egypt. Length 19-25 mm. ...................................................................................
S. sennaariensis
Selon la photo, malheureusement, je suis embarrassé pour faire la définition. Dans ma collection il y a aussi pas assez d' exemplaires pour conclure. Probablement, cela vous aidera.
Très cordialement.....