The but­ter­fly ef­fect

go! - - In Brief -

So you’ve got a bird app and a tree app, what about a but­ter­fly app? With Wood­hall’s But­ter­flies of South Africa on your smart­phone or tablet (Ap­ple or An­droid) you can eas­ily iden­tify the but­ter­flies you en­counter on your Sun­day pic­nic – with­out lug­ging around a heavy guide book. The app was com­piled by ex­pert Steve Wood­hall and it fea­tures more than 800 but­ter­fly species. There are 3 000 colour pho­tos show­ing both the male and fe­male (if they look dif­fer­ent) and the up­per side and un­der­side of each species. Each en­try con­tains information about the species’ dis­tri­bu­tion, its com­mon name, its wing­span, iden­ti­fy­ing fea­tures and habi­tat. (You can search us­ing the sci­en­tific name or the com­mon name.) You’ll also learn whether the but­ter­fly mim­ics other species, what the lar­vae eat and when the but­ter­fly is usu­ally seen. There’s even a handy func­tion that al­lows you to com­pare the en­tries of two species. Us­ing your phone’s GPS lo­ca­tion services, you can re­fine your search even fur­ther: The app will only show species found in your re­gion. Keep a record of your sight­ings by com­pil­ing a list of the species you’ve seen, with the date, lo­ca­tion and notes about each sight­ing. R290 from the Ap­ple App Store or the Google Play store

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