#thyanta

[jenfoundabug]

Why hello there :3

(Thyanta species, Northern California)

[entomoblog]

La salive des punaises Pentatomidae : un mélange puissant pour contourner les défenses des plantes

Research finding nearly 700 proteins in the saliva of five stink bug species illustrates the complex biochemical conflict between plants and insects.

  Stink Bug Saliva: A Potent Mix to Bypass Plant Defenses

By Ed Ricciuti

  (Photo by Johnny N. Dell, Bugwood.org)

  -------

NDÉ

Traduction

  Peu après l'apparition des insectes, il y a environ 400 millions d'années, certains d'entre eux ont commencé à manger des plantes qui, à leur tour, ont développé des défenses pour ne pas devenir de la nourriture, déclenchant ainsi une course à l'armement au cours de l'évolution. Il s'agit d'une course sans ligne d'arrivée car, au fil du temps, les plantes développent des mesures de protection contre la prédation et les insectes mettent au point des contre-mesures qui leur permettent de maintenir leur approvisionnement en nourriture. C'est ainsi que le cycle se poursuit.

  La morphologie, comme la forme des pièces buccales des insectes et des épines des plantes, joue un rôle, mais les principales armes dans le conflit entre les insectes et les plantes sont biochimiques, complexes et loin d'être comprises par la science. Une étape vers la compréhension des complexités de la guerre chimique dans le monde des insectes et des plantes est décrite dans un nouveau rapport de recherche sur les punaises puantes (Pentatomidae) voraces et dévoreuses de plantes, publié en juillet dans les Annals of the Entomological Society of America.

  [Image] Le conflit biochimique entre les plantes et les insectes qui les mangent est extrêmement complexe, comme l'illustrent de nouvelles recherches qui ont permis d'identifier près de 700 protéines dans la salive de seulement cinq espèces de punaises puantes, dont beaucoup jouent un rôle potentiel dans la suppression ou la désactivation des défenses chimiques des plantes. La punaise verte du sud (Nezara viridula), représentée ici, est l'une des espèces étudiées.

  L'étude

  Salivary protein expression profiles of five species of Pentatomidae (Hemiptera) - Annals of the Entomological Society of America, 22.07.2023

  Abstract

Stink bug (Hemiptera: Pentatomidae) development typically requires feeding on a diversity of plant species and various plant tissues. During feeding, stink bugs discharge salivary enzymes with roles in extraoral digestion and countering plant defense responses. Although previous research has described digestive salivary proteins from stink bugs, less is known of the salivary proteins involved in the suppression of plant defenses. We sequenced the transcriptomes of salivary glands dissected from five stink bug species collected from non-crop habitats in Washington: Halyomorpha halys (Stål), Nezara viridula L., Euschistus conspersus (Uhler), Thyanta pallidovirens (Stål), and Chlorochroa ligata (Say). We identified a total of 677 candidate secreted proteins from the salivary glands of the five species. Based on work from other insects, many of the proteins have potential functions in the suppression of plant defense signaling and deactivation of plant defense molecules. We also identified salivary proteins with potential roles in the extraoral digestion of plant tissues, protection from entomopathogens, and deposition of salivary sheaths. This report provides a curation of putative salivary effector genes for further functional analysis.

[nanonaturalist]

hi! im fascinated by the thyanta perditor stinkbugs in my garden (common name too long). i cant find any images of them as nymphs, though. so you inspired me - i took some eggs and im going to raise them myself! ive never raised bugs before though, do you have advice? should i just give them pieces of the plants the adults live on or should i try giving them fruits as well (the nymphs eat the same as adults right?) and how do i best give them water? thank you, all help very appreciated! 😃

Very good! I raised Thyanta custator last year, and they were a lot of fun but I got so behind dealing with all my rearing photos I still haven’t uploaded most of them (or made a follow-up post for them on here [link to posts with my stink baby tag]). I made a couple entries for them on iNaturalist [link] and Bugguide [link].

To answer your questions:

Feeding the babies: They will basically eat any soft leafy plants (which is why gardeners aren’t fond of them, but I’ve never seen them cause actual damage!). You want to feed them whatever is easiest for you to provide them fresh, continually. Try a bunch of things! I started out giving them a random assortment of plants (some stink babies grow up on grasses, and those were easy!), but the problem with Thyanta is their favorite foods dry out really quickly. If you give them something like lettuce (from your garden or the grocery store!), you can make a clean cut on the stem and wrap the stem with a damp paper towel. It should last a decent amount of time. Something with a more rigid stalk (ragweed or pokeweed leaves? Leafy flowery bushes?), you can place in a small container or jar with water, but make sure there is something that prevents them from following the stalk into their watery grave. I have been having success with filling the container with water, then throwing in paper towels or cotton balls to slow the water evaporation and keep the babies from drowning.

Watering the babies: Insects (to my knowledge) don’t drink water like other animals do! All of their water comes from their food. So just make sure their food is nice and fresh, and they will be fine!

Preventing escapes: They WILL try to escape. Find a way to stop them! I used critter carriers with a piece of paper towel over the opening between the container and the lid. If you raise them in a jar, you can use one of the canning lid rings with paper towel or fabric. They can squeeze through much smaller holes than you think they can, and they can go MUCH FASTER than you think!

Molting: If they stop moving/stop eating, and then you see “dead” ones at the bottom, they may have just molted!

Above is a molting baby Thyanta! Bugs (True Bugs, hemiptera) tend to be red after molting. In the image above, you can see the old skin (the exuvia) he is squeezing out of. Those skins are basically an empty shell in the same shape/size as the babies had been. They are fun to collect to compare the size of the babies at each life stage.

GOOD LUCK and let me know if you have any more questions!

July 18, 2018

[floridensis]

@coniontises

normally i reply in the notes but im on my computer right now and this is really interesting so i decided to make my own post

i thought it was taking a while to develop! thats really interesting, what a funny little conclusion to my project! i know for a fact it is thyanta perditor, as i bred it, so thats actually a much more satisfying result than if it became green, considering my whole goal was to add more photos to bugguide and stuff because i saw thyanta perditor images were lacking (also i fell behind on that, need to get around to adding those) and so what do you know, i can contribute a different colored bug on top of that!

[whatnext10]

The Beautiful Red Shouldered Stink Bug Can Damage Plants

The Beautiful Red Shouldered Stink Bug Can Damage Plants shows readers several images of this bright green bug. It also explains it life cycle, feeding habits, and range of this insect.

Red Shoulders One afternoon awhile back, I went out to one of our local retention ponds to release an aquatic turtle. While I was out there, I found all sorts of interesting things to photograph. One of them was a red shouldered stink bug (Thyanta custator) located on a spiderwort plant. I was really taken by the way the bug’s eyes and shoulder stripes matched the colors in the foliage. Stink…

[agrosabendo]

APRENDA A IDENTIFICAR OVOS DE PERCEVEJOS QUE ATACAM GRÃOS São vários os percevejos que causam danos ao produtor, em específico, nos grãos de cada cultura. Aprender a identifica, logo em sua fase inicial (ovo), é muito importante. Assim, aprenda agora a identificar ovos de percevejos que atacam grãos: Ovos do percevejo-marrom (Euschistus heros): são depositados em pequenas massas de cor amarela, normalmente com 5 a 8 ovos por massa, apresentando mancha rósea, próximo à eclosão das ninfas. Os ovos são colocados, principalmente, nas folhas ou nas vagens da cultura da soja. Ovos do percevejo-verde-pequeno (Piezodorus guildinii): são pretos, em formato de “barril” e colocados em fileiras duplas, tendo, em média, de 11 a 15 ovos por postura. Os ovos são colocados nas vagens, mas podem ser encontrados na face ventral ou dorsal das folhas, no caule e nos ramos. Ovos do percevejo-verde (Nezara viridula): são de coloração inicialmente amarelada, passando a uma cor rosada próximo à eclosão. Ovos do percevejo barriga-verde (Dichelops melacanthus): são verde-claros, ovoides, dispostos em grupos de tamanho variável, os quais são formados por três ou mais fileiras mais ou menos definidas. Tem semelhança com percevejo-marrom. Ovos do percevejo-da-soja (Edessa meditabunda): são verde-claros com cerca de 1,5 mm de comprimento sendo colocados em linhas paralelas. As posturas podem conter de 12 a 14 ovos. Ovos do percevejo-do-trigo (Thyanta perditor): são acinzentados com um círculo quase preto no meio. Leu até aqui? E aí, gostou? Torne esse conteúdo acessível, compartilhe! Obrigado por fazer isso e conte sempre comigo. Até breve. #percevejos #percevejoverde #percevejomarrom #percevejoverdepequeno #percevejodasoja #agronomia #agricultura #grãos #soja #milho #ovosdepercevejos #agronomiabruta #agronomiabrasiloficial https://www.instagram.com/p/Car9xuNOomZ/?utm_medium=tumblr

[popgenpapers]

Assessing Genetic Diversity in Four Stink Bug Species, Chinavia hilaris, Chlorochroa uhleri, Chlorochroa sayi, and Thyanta pallidovirens (Hemiptera: Pentatomidae), Using DNA Barcodes.

#pubmed http://dlvr.it/Q84B2G

[nanonaturalist]

hey, some follow up on my thyanta perditor eggs, how long does it usually take stinkbugs to hatch? you are able too see them, right? is there anything that could make them not hatch or be delayed? i read that they take about 6 days but im nearing on 10 days and getting nervous about the babies. thank you! :)

Hatch time can be highly dependent on temperature and other environmental cues (length of day maybe?). Warmer climates have faster hatch times and faster development because metabolism also speeds up with increasing temperature.

For my Thyantas, the brown stripes just got darker (or lighter? I think I posted them on here with my stink babies tag), I didn’t notice their faces BUT I also didn’t know to look for them.

Also, I have seen faces show up, and the eggs never hatched… then… wasps came out. If there is an egg, there is a wasp that parasitizes it. And the wasps develop completely to adulthood in their host, so they take longer to come out that the babies normally would.

Best strategy to adopt for any eggs you collect: hold them in a container nothing can climb out of (paper towel rubber banded over jar, or a sealed plastic container which you open a crack once a day to refresh the air and prevent mold). This way, babies can’t escape, and you don’t end up with a ton of weird random tiny flies (psst: they’re wasps!!) in your home.

Posted July 24, 2018, from Calgary, after not sleeping more than four hours in three days because hey, what better time for your AC to go out than midnight on the hottest day ever (lie, only 110 F) the night before leaving on a business trip? So if I don’t make sense, that’s why.

Also please wish good Canadian Bug Blessings on me. The meeting in Pasadena today was good and I did get SoCal pigeons, but NO BUGS?!?! 😒

[floridensis]

neotropical red shouldered stink bug

this ones colors are really unusual!

[floridensis]

look at that beautiful baby! every time i see it its even more stunning than before!

[floridensis]

neotropical red shouldered stink bug

[floridensis]

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im not sure what i just witnessed but i think the one stink bug resuscitated the other? it started moving after this even on its own, i was able to get it to grab onto a plant and i put it where it could access food i dont know if this bug is in the clear now or still dying, but, well, this was certainly a development

[floridensis]

neotropical red shouldered stink bug eggs! im so excited to see the babies!

taken 7/2/18

[floridensis]

heres my stinkbugs new look! it was a really dramatic change!

[floridensis]

neotropical red shouldered stink bug nymph

[floridensis]

neotropical red shouldered stink bug