Eggs and nymphs of Asian stink bug

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Eggs and nymphs of Asian stink bug sent on June 10, 2023 (10:54) by Ulisse53. 6 comments, 134 views.

, 1/25 f/8.0, ISO 500, tripod. Brescia, Italy.

Uova e neanidi di primo stadio di cimice asiatica (Halyomorpha halys) sulla pagina inferiore di una foglia di platano. Le uova sono di forma ovale, biancastre, di circa 1 mm di diametro, deposte a gruppi di 25 – 28 elementi, in prevalenza sulla pagina inferiore delle foglie. Le neanidi appena nate rimangono vicino all'ovatura. Con la successiva muta iniziano a disperdersi. Lo sviluppo da uova ad adulto avviene attraverso 5 stadi giovanili. La cimice asiatica, insetto molto dannoso per le coltivazioni di frutta, non ha da noi antagonisti naturali. Nelle zone di origine esiste un imenottero parassitoide delle uova noto come vespa samurai (Trissolcus japonicus). Focus Stacking di 19 immagini.

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5 persons like it: Gdb146, Lukeskywalker, Nicola De Crecchio, Stefania Saffioti, WillyG

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Gdb146

sent on June 10, 2023 (11:06) | This comment has been automatically translated (show/hide original)

I think they are nymphs of Zicrona caerulea ;-) greetings Giorgio

Ulisse53

sent on June 10, 2023 (11:19) | This comment has been automatically translated (show/hide original)

Thanks Giorgio. This is the first hypothesis I had also made. Then, from a more in-depth research, and from the fact that in my area there are no Zicrone caeruleae but many Asian bedbugs, I deduced that it is the latter.

Gdb146

sent on June 10, 2023 (11:33) | This comment has been automatically translated (show/hide original)

You're right they are nymphs at the first stage of Halyomorpha halys. The nymph of Zicrona caerulea of V age has a similar appearance

Ulisse53

sent on June 10, 2023 (11:41) | This comment has been automatically translated (show/hide original)

Ok, thanks for the confirmation.

Nicola De Crecchio

sent on June 10, 2023 (16:55) | This comment has been automatically translated (show/hide original)

Excellent document Ulysses! But are the eggs you see now empty and only the outer casing remains? There seems to be a precise cut from which small bedbugs came out. In other cases, however, it seems to me that the newborn larva feeds immediately on the shell of the egg.

Ulisse53

sent on June 10, 2023 (21:36) | This comment has been automatically translated (show/hide original)

Thanks Nicola.
Yes, the eggs are now empty. The perfect cut of the operculum from which the nymphs came out is impressive.

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Some comments may have been automatically translated with Microsoft Translator.