22 Tuesday May 9 2017 Latest Christchurch news at www. .kiwi Backyard critters SELWYN TIMES South African mantis invades Lincoln Mike Bowie is an ecologist who specialises in entomology (insects and other invertebrates). Each week he introduces a new species found in his backyard at Lincoln. His column aims to raise public awareness of biodiversity, the variety of living things around us THE SPRINGBOKS are invading Lincoln, but not the rugby variety. The South African praying mantis (miomantis caffra) is invading New Zealand and has reached Lincoln as it disperses south. The invader is thought to have arrived in Auckland around 1978 and is spreading north to south. Trouble is, the bok mantis appears to be eating our native species, orthodera novaezealandiae, and there are serious concerns that our native species is being displaced. Our native males are being attracted to the female bok mantis only to be eaten. So how do you tell the difference between the two mantis species? Our native mantis has a large blue-purple dot on the inside of its forelegs and the exotic bok mantis doesn’t. The second distinguishing feature is the width of the neck of the two species. The native mantis has a wide neck close to the width of its body, whereas the bok mantis has a neck markedly narrower TAKING OVER: The South African praying mantis (miomantis caffra) has reached Lincoln and is eating native species. than its head. Like the adults, the egg cases (ootheca) also look quite different between the species. The native egg cases are brown in colour and have a figure of 888888-pattern when looking from above. When these are freshly laid (usually in autumn), the holes have a white waxy covering that seals the eggs inside. When the young mantis’ hatch in spring, the white seal is broken, exposing the 888888 holes. The bok ootheca looks like a mini meringue and has a tapered end. Should we be concerned about this invasion? Well, Auckland entomologist Greg Holwell thinks so. He has been studying the ecology of the two species for 10 years and has noticed a dramatic increase in the bok mantis at the expense of our native one. Hagley Junior Open Night Looking at high school options for 2018? Join us for our Junior College Open Evening and discover more about what Hagley can offer you! TUESDAY, MAY 9TH | Please join us at either 4pm or 5pm Phone us on (03) 379 3090 ext 884 or visit www.hagley.school.nz for more information about Junior Enrolments. ROLLEStON’S ONLy REGIStERED REtIREMENt vILLaGE NOW SELLING WoodCroFt EstAtE oFFErs YoU: PEACE oF Mind: • 30 years’ experience in the retirement industry • A statutory Supervisor • An investment with 100% capital gain • A Village that the residents own FOR MORE INFORMATION: Call Corinne on 021 821 683 or 03 421 7796 Email: email@example.com 34 kEndon drivE, rollEston www.manorgroup.co.nz
SELWYN TIMES Latest Christchurch news at www. .kiwi Tuesday May 9 2017 23 Remember Mum this Mother’s Day Sunday 14 May Simply bring this coupon to our Centre Management office (located upstairs between Subway and Maxwell Drycleaners) and swap it for a $10 Barrington gift voucher! Available 10 – 11 May 2017. Happy Mother’s Day from Barrington! $10 VOUCHER Special conditions apply. One voucher per mum. Limited to 100 vouchers each day. 256 Barrington Street, Christchurch 8024 Phone: 03 332 4221 www.barringtonshopping.co.nz Like us on facebook! Follow us on instagram!