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Microlarinus sp. - Curculionidae
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Autore:  Adriana49 [ 28/11/2019, 20:34 ]
Oggetto del messaggio:  Microlarinus sp. - Curculionidae
Salve! Misura circa 5 mm. sembrerebbe un Lixino pelosetto, :roll: :roll: :roll: :roll:

Allegati:
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Autore:  AetherisIgnis [ 29/11/2019, 4:38 ]
Oggetto del messaggio:  Re: determinazione curculionidae
Microlarinus cf. lareynii
:hi:
Autore:  Adriana49 [ 29/11/2019, 9:12 ]
Oggetto del messaggio:  Re: determinazione curculionidae
Grazie Aleksei, buona giornata :hi: :hi: :hi:
Autore:  Adriana49 [ 29/11/2019, 9:22 ]
Oggetto del messaggio:  Re: determinazione curculionidae
Molto simile al M. lypriformis, a parte l'edeago, quali possono essere i caratteri che differenziano le due specie????
Autore:  FORBIX [ 29/11/2019, 11:42 ]
Oggetto del messaggio:  Re: determinazione curculionidae
Tratto da:
Colonnelli,2018 - Annali del Museo Civico di Storia Naturale “G. Doria” Vol. 111 - 28 Dicembre 2018



ON THE IDENTITY OF LIXUS ISSELII GESTRO, 1889
WITH NOTES ON THE GENUS MICROLARINUS HOCHHUTH, 1847




1 – Erect setae on elytra and pronotum clearly longer that the width of an elytral interval.. . . . . . . . . . . . .2
1’ – Erect setae on elytra and pronotum not or slightly longer than the width of an elytral interval. Prothorax barely narrower than elytra (figs 7 and 8). On Tetraena fontanesii (Webb. & Berthel.) Beyer & Thulin (Zygophyllaceae). Length: 3.5-4.0 mm. Canary Islands. . . . . . . . . . . . . . . . . . . . . . . .eliasenae Marshall
2 – Erect setae on elytral intervals not arranged in rows. On Tribulus pentandrus Forsk. (Zygophyllaceae). United Arab Emirates. Length: 3.9-4.5 mm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .irregularis Colonnelli
2’ – Erect setae on elytral intervals at least in part arranged in rows. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
3 – Size not exceeding 2.7 mm. United Arab Emirates. Length: 2.2-2.7 mm. . . . . . . . . . minimus Colonnelli
3’ – Size above 3 mm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
4 – Body elongate, elytra subcylindrical and barely less than twice as long as wide. Pronotum hardly narrower than elytra. Erect setae on elytra and pronotum just a little longer that the width of an elytral interval. On Tribulus terrestris L. and T. cistoides L. (Zygophyllaceae). Europe, Africa, India, introduced in north, central and south America, Hawaii and Papua New Guinea. Length: 3.0-4.2 mm . lypriformis (Wollaston)
4’ – Body plumper, elytra with somewhat rounded sides at least on posterior third and at most 1.8 times as long as wide. Erect setae on elytra and pronotum clearly longer that the width of an elytral interval. . . . .. .5
5 – Rostrum subquadrate, not or barely longer than wide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
5’ – Rostrum more or less tapering towards apex, usually clearly longer than wide. . .. . . . . . . . . . . . . . . . . . .7
6 – Lateral pale stripe of pronotum and elytra formed by bifid hair-like scales. Tanzania. Length: 3.5-3.7 mm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . masaicus Voss
6’ – Lateral pale stripe of pronotum and elytra formed by simple hair-like scales. South Africa, Mozambique, Zimbabwe, Malawi, Ethiopia. Length: 3.5-4.0 mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . brevirostris Marshall
7 – Erect setae on elytra and pronotum at least as long as three times the width of an elytral interval. Rostrum more than 1.5 times as long as wide in males and around twice so in females. South Africa, Namibia, Zambia (fig. 12). Length: 3.4-4.0 mm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pilosus (Gyllenhal)
7’ – Erect setae on elytra and pronotum about twice as long as the width of an elytral interval. Rostrum less than 1.5 times as long as wide in both sexes. On Tribulus terrestris L. (Zygophyllaceae). Europe, North Africa, western and central Asia, India, introduced in North America and Hawaii. Length: 3.0-4.0 mm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . rhinocylloides Hochhuth
Autore:  strepens [ 29/11/2019, 19:09 ]
Oggetto del messaggio:  Re: determinazione curculionidae
Thank you Leonardo (and Enzo of course) !!! :lov1:
A new and simple identification key at last, after this (a bit problematic) of Petri -1907.
But where is M. lareynii in this key ?? It is in synonymy to another species ???
:hi: :hi:
G
Autore:  Adriana49 [ 29/11/2019, 19:58 ]
Oggetto del messaggio:  Re: determinazione curculionidae
Grazie Leonardo, buona serata :hi: :hi: :hi:
Autore:  FORBIX [ 30/11/2019, 7:15 ]
Oggetto del messaggio:  Re: determinazione curculionidae
strepens ha scritto:
Thank you Leonardo (and Enzo of course) !!! :lov1:
A new and simple identification key at last, after this (a bit problematic) of Petri -1907.
But where is M. lareynii in this key ?? It is in synonymy to another species ???
:hi: :hi:
G


Colonnelli,2018 :ok: :ok:

"........Accordingly, it is here pointed out again that M. rhinocylloides Hochhuth, 1847 is the same as M. lareynii Jacquelin du Val, 1853. Since Alonso-Zarazaga et al. (2017) set up the synonymy between M. lareynii and M. diecki, the following new synonymy must also be established: M. rhinocylloides Hochhuth, 1847 [= M. diecki Faust, 1890; n. syn.]."

Therefore....

Microlarinus rhinocylloides Hochhuth, 1847 = M. lareynii Jacquelin du Val, 1853 = M. diecki Faust, 1890.

In my opinion, this is: Microlarinus lypriformis (Wollaston) :oops:
:hi: :hi:
Autore:  strepens [ 30/11/2019, 10:44 ]
Oggetto del messaggio:  Re: determinazione curculionidae
Thank you again Leonardo !!!
So, only 2 species in continental Europe, M. lypriformis and M. rhinocylloides.
But here, in my opinion, this is probably the second of them, M. rhinocylloides.
:hi: :hi:
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