Cassida sp. - Chrysomelidae.

Hello Roberto,

Cassida sp. indeed; but I can't see any other insect on its elytra ?

It is not dangerous for people at all, Cassida are phytophagous species that cant neither sting (no beetle can) nor bite.

The species of the genus Cassida are numerous and difficult to distinguish. But knowing on which plant species was found can be of help. Your specimen could be Cassida vittata, related to the artichokes (carciofi). You are getting it at home after you've bought artichokes?

I see a small white object on the right elytron. It could be an egg of some parasite of Cassida.

Cassida, undoubtful. The "insect" it seems to carry on may be a phoretic mite

Thank you dr Mario Zunino, phoretic mite  hope it's not dangerous to humans.

Not dangerous at all - if it is really a phoretic mite - for humans & co.

Thank you again prof. 

Cassidinae beetle, Perhaps Cassida sp...what is the locality?

Cassidinae are not dangerous..nor are the mites often seen under elytra of various beetles...

hvg

Hello Roberto:

Your specimen belongs to the species Cassida rubiginosa (Coleoptera: Chrysomelidae), known  as the Green Tortoise Beetle) Is a common leaf beetle on Creeping Thistle and Knapweed in Europe.

Regards,

Luis M

It is probably the chrysomelid that the above think it is. However, when I studied under Dr. D.H.Habeck, he insisted we collect beetles in the family Nitidulidae (Sap-feeding Beetles) for him. They also had translucent edges to the elytra like this. I do not know if he ever published on them, but you could look in, say, Google Scholar. Also, could whatever was on the beak be an ectoparasitic mite? 

Lewis:

The antennae of Nitidulidae are usually eleven segmented with the distal three segments forming a club which makes them easily recognized. The antennae of Cassida are slender and filiform, but thickest toward the extremity with nine segments.

On reconsidering I agree with @Luis Miguel Constantino that it is Cassida. I still think the edges of the elytra are entertaining even if misleading. 

This is Cassida sp. (Coleoptera: Chrysomelidae). Proper identification of species hardly possible on base of the photographs without specific details and locality data. 

Cassida sp. is distributed all over the "Old World" with many recent species.

This group of leaf beetles is herbivorous. 

Chrysomelidae Cassidinae, genus Cassida. The small arthropod (probably a phoretic mite) is on the pronotum (that is not a "carapace"). The genus Cassida comprises many species often very similar, all are phytophagous; some of them damage herbaceous crops. Other genera of beetles with expanded and translucent edges to the elytra and the pronotum: Cossyphus (Tenebrionidae), Soronia, Lobiopa ecc. (Nitidulidae, rather small beetles, in which the pronotal edge does not cover the head), and others... Regards,

Rinaldo Nicoli

Dear Dr. Roberto Ardovini, This species belongs to the genus Cassida (Chrysomelidae, Cassidinae). I have the book dealing with this subfamily. If you like, I must serach into this book for identifing the species. This insect lives also in France. [email protected] Sincerely yours.

Dear Roberto I agree above colleagues, This is Cassida sp. (Coleoptera: Chrysomelidae) and it is not dangerous to people because of herbivorous feeding.

This is Cassida

It may be Cassida sp

Dear maybe  Cassida rubiginosa

Very thanks to all. Roberto

Une espèce du genre Cassidae (famille des Chrysomelidae). Research Associate at Franch National Research Institute for Agriculture, Sophia-Antipolis, Southeastern France, now retired but remaining always coleopterist in the wild.

No

It looks like Cassida spp., maybe C. viridis. It is phytophagous.

Cassida rubiginosa is oke

Apologizes for my mistake "Cassidae" instead of Cassida. I am sure for the genus. For the species, one experienced Coleopterist must to answer, because refracted light through integument of Cassida species can change dorsal colour of the species. Sincerely yours.