Brazilian Peppertree Stalk Mundane Weevil, Apocnemidophorus pipitzi

Brazilian Peppertree Stalk Mundane Weevil, Apocnemidophorus pipitzi

When you look at the Hawaii, in which it had been put-out on 1950s, E. unguiculus is commonly delivered into Brazilian peppertree, nevertheless the insect appear to isn’t good enough abundant to help you seriously damage the new bush (Yoshioka and , individual observation). This new ineffectiveness regarding Age. unguiculus since the a physical handle agent about Destinations may getting due to some extent in order to biotic death affairs book to that particular ecosystem. Such as for instance, a few wasps that have been put for the Hawaii for classical biological handle of your sugar-cane leafroller Hedylepta (=Omiodes) accepta (Butler) had been discover attacking E. unguiculus appropriate it had been put-out against Brazilian peppertree (Krauss 1963).

The brand new sexes of A great

Regardless if satisfactory biological control of Brazilian peppertree by Elizabeth. unguiculus was not hit throughout the Hawaiian archipelago, this incapacity must not prevent the introduction of this new bug to your Fl. Episimus unguiculus could be a far better physiological manage representative of Brazilian peppertree when you look at the Fl because was produced into the a beneficial the fresh environment in which biotic mortality away from introduced and you can local parasitoids and you will predators can be reduced serious than the Their state. Server diversity research are accomplished, and you may a launch petition was published to brand new Tag inside the (Cuda et al. 2019). But not, Mark failed to recommend profession discharge in the Florida by the threat of obvious race that have native Episimus spp., as well as the possibility of the insect so you can assault cultivated pistachio about impractical experiences one E. unguiculus emigrated in order to south California and you will Arizona. The danger so you can nontarget insects and you can plants off Age. unguiculus was industry checked out using the F1 Sterile Insect Approach (Cuda 2016). Creation of F1 sterile progeny was gotten from the presenting the latest adult age bracket to reasonable dosage away from gamma radiation (Moeri et al. 2009). This will support findings toward emergency and perception of your F1 larvae to your nontarget plants less than real industry criteria with no chance of long lasting facilities, as people created from brand new F1 larvae are completely sterile.

Studies conducted recently for the north Argentina (McKay et al. 2009), and you may southeastern Paraguay found the existence of several the brand new absolute enemies from Brazilian peppertree. Of these were several types of stem boring weevils belonging to the fresh genus Apocnemidophorus Hustache. Brand new weevils resemble bird droppings and you may quickly decrease this new vegetation when they are disrupted. Adults out-of Apocnemidophorus pipitzi (Faust) was amassed in the southeastern Paraguay and you can imported to your a florida containment laboratory inside . Considering Wibmer and you can O’Brien (1986), A beneficial. pipitzi was native to Argentina, Brazil, and you can Uruguay. A study of weevil specimens placed throughout the entomology art gallery away from the Government School out-of Parana within the Curitiba, Brazil, revealed that stuff regarding A good. pipitzi have been made in the usa from Parana, Santa Catarina, and Minas Gerais. pipitzi in Paraguay are a different sort of country list for this types.

Brand new thickness out of Good

Brand new people assortment in proportions from cuatro to help you seven mm inside size and are grayish brown within the colour, that have alive specimens often searching a great deal more rich and creamy than just grayish (Contour 5). A thicker spot off light balances is obviously obvious towards edges of one’s pronotum in fact it is less pronounced into the bottom part of the instinct. The rest of your own system has actually just a few scattered parts which have white balances. There also are numerous spots out of black colored balances over the elytra, which can be demonstrably obvious around magnification, giving the elytra (forewings) a somewhat mottled appearance.

pipitzi are conveniently distinguishable. Predicated on C. W. O’Brien (personm.), you will find visible variations in the fresh rostrum (snout) and antennal installation in people out-of A beneficial. pipitzi. The new female have an equally rounded relatively evenly cylindrical rostrum which have zero difference in diameter otherwise curvature on antennal installation. In contrast, the latest men has a robust dorsal extension at the antennal insertion, in addition to rostrum is actually narrowed outside of the insertion, firmly tilted ventrally, and you will dorsally hit bottom. This really is evident inside very small specimens. Other types of the fresh genus, certain quite similar in appearance, lack like apparent male differences in the rostrum.

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