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Project Noah Nature School
Identified as Trichochrysea hebe (Baly, 1864)
see https://www.inaturalist.org/observations... for reference
Have tried to verify the ID with aid of a 1920 paper on group.
( https://www.zobodat.at/pdf/Archiv-Naturg... )
Came to conclusion, this likely is an Orychodes sp., but not O. indus, which is described as having the lateral elytral striae as superficial puncture series, and the posteriour corners of head also different. The latter probably is subject to some sexual variation, the former will be not. Spot pattern is o.k. for O. indus (but alike found in many species).
O. planicollis Walker excluded by pattern, it seems.
Because the rostrum is a bit flattened and expanded terminally, and antennae inserted quite far from base of it, I assume we see a male here.
(no need to modify your ID - I am just working into this family, it is new to me, too)
This is related genus Strongylosomus - flatter, and antennae shorter
This looks like a female Cerotoma sp. (related to Diabrotica)
- pronotum (neckpiece) wider than long, and pattern typical "Cerotoma". Males have peculiar grasping antennae - then easy not to mix up.
ID: Alagoasa sp. (Flea beetles - Alticini)
About 50 species known from Brazil, some of them very, very variable in colour pattern, to make it more difficult . . .
You have two more observations of same, I see. In our selection on iNaturalist, it is not included, though A. libentina is similar:
https://www.inaturalist.org/observations...
Hi! like the photo of you and the caterpillar - so gentle . . . :-)
O.K. for the point: This beetle looks pretty much like Cryptocephalus irroratus - a species ranging around the Caribbean: https://www.inaturalist.org/observations... - it may well be present in Brazil as well.
