Brazilian Peppertree Stalk Painful Weevil, Apocnemidophorus pipitzi

Into the Hawaii, in which it was create in the 1950s, Elizabeth. unguiculus are extensively distributed into the Brazilian peppertree, nevertheless the bug apparently is not good enough plentiful so you’re able to really destroy new plant (Yoshioka and you may , personal observation). The brand new ineffectiveness away from Elizabeth. unguiculus since the a biological handle representative regarding Hawaiian islands can get end up being due in part so you can biotic death products novel to this ecosystem. For example, two wasps that were put for the Their state to have classical physiological control of one’s sugar-cane leafroller Hedylepta (=Omiodes) accepta (Butler) was discovered attacking Elizabeth. unguiculus soon after it was released facing Brazilian peppertree (Krauss 1963).

The latest men and women regarding A great

Although high enough physical power over Brazilian peppertree of the Elizabeth. unguiculus was not hit on the Hawaiian archipelago, so it incapacity must not prevent the development of the newest insect on Fl. Episimus unguiculus might possibly be a far better physical manage broker out of Brazilian peppertree when you look at the Fl as it is lead towards good the fresh ecosystem where biotic death regarding put and you may native parasitoids and you may predators tends to be quicker major as compared to Hawaii. Host range evaluation are finished, and you will a production petition are published to this new Mark inside (Cuda mais aussi al. 2019). Yet not, Mark did not highly recommend field discharge from inside the Fl from the likelihood of apparent competition with native Episimus spp., and prospect of the newest insect to help you assault expanded pistachio on unrealistic event one E. unguiculus emigrated so you can southern area Ca and you may Washington. The risk to help you nontarget pests and you can plants from Age. unguiculus could well be community checked-out with the F1 Sterile Insect Approach (Cuda 2016). Production of F1 sterile progeny might possibly be obtained because of the presenting the new parental generation to help you lower dosage out-of gamma radiation (Moeri mais aussi al. 2009). This should facilitate findings for the emergency and effect of the F1 larvae to the nontarget vegetation lower than real occupation requirements and no chance out of long lasting facilities, due to the fact grownups created from the new F1 larvae are entirely sterile.

Surveys presented has just in north Argentina (McKay et al. 2009), and you can southeastern Paraguay shown the presence of several the latest pure foes regarding Brazilian peppertree. Of those was indeed a couple types of stem fantastically dull weevils belonging to the new genus Apocnemidophorus Hustache. This new weevils wind up as bird droppings and you will instantly decrease the fresh plants when they’re interrupted. People off Apocnemidophorus pipitzi (Faust) was in fact amassed within the southeastern Paraguay and you may brought in into a fl containment lab when you look at the . Based on Wibmer and O’Brien (1986), A beneficial. pipitzi is actually indigenous to Argentina, Brazil, and you will Uruguay. An examination of weevil specimens placed regarding the entomology art gallery from the newest Government College out of Parana inside Curitiba, Brazil, showed that series out-of An effective. pipitzi have been made in the us of Parana, Santa Catarina, and you may Minas Gerais. pipitzi inside Paraguay was yet another country listing for it species.

The fresh occurrence out of A beneficial

New adults variety in dimensions out-of cuatro so you can eight mm inside size and are also grayish brownish in colour, that have real time specimens tend to looking a lot more rich and creamy than just grayish (Profile 5). A thick area out-of white scales is in fact obvious with the sides of the pronotum and that’s smaller pronounced to your underside of your gut. The rest of body has but a few strewn elements which have white balances. Indeed there are multiple patches from black colored bills along side elytra, which can be certainly obvious less than magnification, supplying the elytra (forewings) a slightly mottled appearance.

pipitzi was conveniently distinguishable. Considering C. W. O’Brien (personm.), you will find apparent variations in brand new rostrum (snout) and antennal insertion in gents and ladies from A great. pipitzi. The brand new female has an evenly curved apparently evenly cylindrical rostrum with no difference in diameter or curvature on antennal installation. Alternatively, the latest guys possess a strong dorsal expansion from the antennal insertion, as well as the rostrum is actually narrowed beyond the installation, strongly angled ventrally, and dorsally hit bottom. This is exactly apparent inside very small specimens. Other types of the latest genus, particular quite similar in appearance, do not have such as obvious men differences in brand new rostrum.