Pictorial key to nymphs of NZ Pentatomidae and unwanted exotic species

Immature stink bugs or nymphs moult through five stages (instars) before becoming adults; the fifth stage or last instar nymph has wing pads extending to the third abdominal segment.

Select the catergory that best fits your nymph.

Over 12mm

[Erthesina fullo] last instar nymph. © Derivative of photo by 'itchydogimages on Flickr', used with permission (available under CC BY-NC 4.0 license) Image — Erthesina fullo last instar nymph. © Derivative of photo by 'itchydogimages on Flickr', used with permission (available under CC BY-NC 4.0 license)

[Halyomorpha halys] last instar nymph. © Derivative of photo by G. Bernon, USDA APHIS, Bugwood.org, used under CC BY 3.0 US license. Image — Halyomorpha halys last instar nymph. © Derivative of photo by G. Bernon, USDA APHIS, Bugwood.org, used under CC BY 3.0 US license.

[Nezara viridula] last instar nymph. Image — Nezara viridula last instar nymph.

Colour brown / black, under 12mm

[Dictyotus caenosus] last instar nymph. Image: Phil Bendle | CitScihub Image — Dictyotus caenosus last instar nymph. Image: Phil Bendle | CitScihub

Image 1: [Glaucias amyoti] last instar nymph. © MWLR | CC BY-NC 4.0 Image — Image 1: Glaucias amyoti last instar nymph. © MWLR | CC BY-NC 4.0

[Hypsithocus hudsonae] last instar nymph. © MWLR | CC BY-NC 4.0 Image — Hypsithocus hudsonae last instar nymph. © MWLR | CC BY-NC 4.0

[Monteithiella humeralis] last instar nymph. © Derivative of photo by T. Holmes, Plant & Food Research, New Zealand, sourced from NZAC factsheet series Image — Monteithiella humeralis last instar nymph. © Derivative of photo by T. Holmes, Plant & Food Research, New Zealand, sourced from NZAC factsheet series

Colour green

[Cuspicona simplex] last instar nymph. © Derivative of photo by T. Holmes, Plant & Food Research, New Zealand, sourced from NZAC factsheet series. Image — Cuspicona simplex last instar nymph. © Derivative of photo by T. Holmes, Plant & Food Research, New Zealand, sourced from NZAC factsheet series.

Image 1: [Glaucias amyoti] last instar nymph. © MWLR | CC BY-NC 4.0 Image — Image 1: Glaucias amyoti last instar nymph. © MWLR | CC BY-NC 4.0

[Nezara viridula] last instar nymph. Image — Nezara viridula last instar nymph.

Legs banded

[Cermatulus nasalis] last instar nymph. © Derivative of photo by J. Rolfe, New Zealand, used with permission (MWLR | CC BY-NC 4.0) Image — Cermatulus nasalis last instar nymph. © Derivative of photo by J. Rolfe, New Zealand, used with permission (MWLR | CC BY-NC 4.0)

[Halyomorpha halys] last instar nymph. © Derivative of photo by G. Bernon, USDA APHIS, Bugwood.org, used under CC BY 3.0 US license. Image — Halyomorpha halys last instar nymph. © Derivative of photo by G. Bernon, USDA APHIS, Bugwood.org, used under CC BY 3.0 US license.

[Oechalia schellenbergii] last instar nymph. © Derivative of photo by N. Holmes, Plant & Food Research, New Zealand, sourced from NZAC factsheet series Image — Oechalia schellenbergii last instar nymph. © Derivative of photo by N. Holmes, Plant & Food Research, New Zealand, sourced from NZAC factsheet series