Isotomus, dimmi se è vero!
LIBANO - El Houssoun (Jbail) - 11/6/1997 - 10 mm ca -
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| Stenopterus rufus syriacus Pic, 1892 - Cerambycidae http://www.entomologiitaliani.net/public/forum/phpBB3/viewtopic.php?f=145&t=10964 |
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| Autore: | f.izzillo [ 23/08/2010, 8:00 ] | ||
| Oggetto del messaggio: | Stenopterus rufus syriacus Pic, 1892 - Cerambycidae | ||
Isotomus, dimmi se è vero! LIBANO - El Houssoun (Jbail) - 11/6/1997 - 10 mm ca -
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| Autore: | Isotomus [ 23/08/2010, 9:13 ] |
| Oggetto del messaggio: | Re: Stenopterus rufus syriacus (Pic,1892) ? |
E' l'unico Stenopterus noto di Libano. Propongo qui sotto la chiave delle razze geografiche della specie (dal mio Atlante del 2002). Ovviamente va presa "cum grano salis" poiché nelle regioni di contatto ci possono essere forme di passaggio o due "forme" co-presenti. 1 Hind femora entirely light, rarely apically blackened; antennal scape black, following segments typically light, but 2nd and 3rd sometimes partly blackened; pronotum with spots of pubescence always clearly distinct. Subspecies from Europe except for the northern part; also in Balkans (Bulgaria), European Russia and Caucasian region ..................................................... S. rufus rufus (L.) – Hind femora always at least partly black ........................................................... 2 2 Antennae with 2nd and following segments red; front and hind margin of pronotum usually with spots of dense yellowish pubescence well separated at middle; hind femora more widely blackened; elytra sometimes more or less narrowed and divaricate towards apex. Distributed from south-western Turkey to coastal plains of Syria and Israel ................................................ S. rufus syriacus Pic – First four antennal segments at least partly blackened; front and hind margin of pronotum with less evident spots of grey pubescence (often indistinct or lacking); hind femora only blackened at apex. South-eastern subspecies, mostly distributed from Balkans to north-eastern Turkey ........................................................................... S. rufus geniculatus Kraatz |
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