#convexus

[identifying-isopods-in-posts]

Just found out about cylisticus convexus. These guys look like A. nasatum texture got reformatted onto a porcellio

Lovely thing. Would absolutely throw me for a loop

[isopods-daily]

Cylisticus convexus

[mutillids]

Experiment to see if the isopods will eat the paper bags I get meds in. So far the answer is yes

[smallhatlogan]

being familiar with all the little bugs in my area makes it so exciting when there is a new and different little bug no matter how common they actually are I found some Porcellio scaber in the compost bin! :D that is four different species of isopod in my yard

[helluvatimes]

The Comeback Kid

A Southern Oriental Pied Hornbill (Anthracoceros albirostris convexus) snacking in its cage in the Winged Sanctuary. Photo credit: Jonathan Chua.

This hornbill had apparently gone extinct here in the mid-19th century and wasn’t to be seen until 1994 when a pair was spotted on a small island off the northeastern coast. A group of this can now be seen and heard all over Singapore.

[guppiespets]

For people in the USA, I've been talking with the USDA about what isopods are legal and there is a list

Armadillidium klugii, Armadillidium maculatum, Armadillidium nasatum, Armadillidium vulgare, Atlantoscia floridiana, Cylisticus convexus, Cubaris murina, Oniscus asellus, Porcellio dilatatus, Porcellio laevis, Porcellio scaber, Porcellio spinicornis, Porcellionides floria, Porcellionides pruinosus, Porcellionides virgatus, Rhyscotus texensis, Trachelipus rathkii, Trichoniscus pusillus, Trichorina tomentosa, Venezillo arizonicus, and Venezillo parvus.

These guys are the only pods that are legal to own in the USA unless you have a containment facility. All cubaris sp. fall under cubaris murina :)

[crevicedwelling]

I'm curious: What causes an entire isopod colony to suddenly crash? I had a very active C. convexus colony that thrived for probably two years and then one day, every single one had died suddenly. There didn't seem to be anything wrong with the bodies and I had regularly kept up with adding leaf little, feeding them, misting the tank, etc. for two years prior to that.

I've had this new colony for a year and they're doing really well, growing a bit faster than the first colony. No idea what could have happened.

isopods excrete nitrogenous waste as ammonia gas. an enclosure with a very high population and poor air circulation will lead to toxic levels of ammonia building up and that can kill them all suddenly. side ventilation is important—in the moist conditions necessary for most isopods’ health, ammonia does not rise but can stagnate at floor level.

dehydration is another factor that can strike suddenly, but is more obvious.

[paleopillbug]

A bunch of really shy babies that didn't want their picture taken. In order: Cyclisticus convexus, Porcellionides pruinosus, and one Antlantoscia floridana (munching on cricket food).

Bonus! One curious Sneefer:

[stormy-talks]

Hey @crevicedwelling and/or @bedupolker, would either of you like to come get munched on by my special C. convexus isopods?

They're called Cappuccino isopods. I made 'em myself! Some of them came out all white.

[ichorousisopod]

@twigby-art perhaps you can spot a problem I've missed here

the colony is cylisticus convexus

the container is about 10cm high, with 5cm of substrate depth. the third line of ventilation on the right was just added now, so they haven't had that until today. the vents on the sides are taped up as well (had some escape attempts)

potting soil substrate (I'm unsure of how organic it is, but it hasn't caused issue with my other two colonies as of yet)

I've got springtails in there as well

I worry perhaps it's too moist, I only try to wet the moss but it seems quite damp throughout. the leaf litter has mostly rotted as well from the moisture.

at first I found one body, I figured I may have accidentally crushed one putting the cork bark back in after checking on them. and then I had left them completely unchecked for about a week (perhaps a bit more?), and now there's 4 more dead.

[mutillids]

The springtail situation in my C convexus box

[chaoticrystal]

Oh hey, I know the person who took the millipede photo! Thomas Barbin is a local bug photography god that I've had the pleasure of meeting a few times!

It's on a Harpaphe haydeniana, and it's one of the first records of Betairidovirus in millipedes!

anyway, here are the photo links (because I honestly already had them saved haha... definitely not just because I'm a bit upset that these weren't posted with links and also posted as low quality screen pictures??? for some reason??? the original photos are much prettier and DON'T have cropped watermarks)

1: Armadillidium vulgare | 2: Cylisticus convexus | 3: Harpaphe haydeniana | 4: Tipula (disputed) | 5: Porcellio scaber

anyway GO LOOK AT THE ORIGINAL PHOTOS!!!

Fun fact: there’s a virus that makes bugs iridescent

disease that makes you beautiful then kills you

[isopod-post-headquarters]

Credit to @your-local-house-cricket for the header image, for the pfp you can find it on the BMIG website photographed by Warren Maguire, truly one of the most beautiful images done of Cylisticus convexus

I will try my best to compile as many tumblr posts of interesting bug creatures as i can within my lifetime, i will reblog the bug (most often isopod, with some myriapods that could be included, because theyre awesome) try to narrow down it's phylogenetic tree as much as i can and present it to any isopod/myriapod lover! I will also post my amateur bug pictures on here, not restricted to isopods or myriapods, which will be tagged with #my photo

I will tag my posts with isopods by #isopod and any milipede or centipede posts with #myriapod (with milipedes and centipedes having their own tags). for content labels i will use #arthropod cw and #bug cw.

[lavozs]

Origen y significado de CONVEXO, de la web definición.de.

El término convexo proviene del latín convexus y se utiliza para describir formas que sobresalen, como la cara externa de una esfera. Su opuesto es cóncavo, que alude a superficies hacia adentro, como el interior de una esfera.

En matemáticas, un conjunto convexo es aquel en el que cualquier línea recta entre dos puntos del conjunto permanece completamente dentro de él. La envoltura convexa es el menor conjunto convexo que contiene a un conjunto dado. Una función convexa, a su vez, es aquella donde el área situada por encima de su gráfica es un conjunto convexo.

En geometría, un polígono convexo tiene todos sus ángulos internos menores de 180° y todas sus diagonales son internas. Todos los triángulos y polígonos regulares son convexos.

En economía, la convexidad se usa para medir el riesgo relacionado con cambios en los tipos de interés, afectando la duración de instrumentos financieros como bonos.

Los espejos convexos, curvados hacia afuera, ofrecen imágenes virtuales y reducidas. Se utilizan tanto en seguridad (como en estacionamientos) como en decoración, sobre todo desde el siglo XIX, y también fueron útiles para pintores en el cálculo de perspectivas. El ejemplo pictórico más antiguo de un espejo convexo aparece en una obra de Jan van Eyck en 1434.

Además, se han usado en ferias para generar reflejos distorsionados y en psicología para tratar trastornos de percepción corporal.

Temas clave:

Matemáticas (geometría y funciones)

Economía (riesgo financiero)

Óptica (espejos)

Arte, decoración y psicología

[crevicedwelling]

(I'm the guy who had the C. convexus "Cappuccino" isopods!)

I have some very intact dead insect specimens - specifically a huge cicada, a spotted lanternfly, and two little honeybees. How should I preserve them? I have a dragonfly preserved in alcohol but I'd love to know what else I can do. I've never pinned bugs before and I'm scared I'll ruin them lol.

I’m working on a guide for this sort of thing since I’ve got plenty of dried dead specimens that could use some fixing up! if you wouldn’t mind waiting a bit, I’ll get to it eventually

[crevicedwelling]

I was always a staunch pillbug for Armadillidium, sowbug for Porcellio/Oniscus/Trachelipus kid while growing up, and snobbishly looked down on “roly poly” (still do).

but then I found Cylisticus convexus, which is both long and flattish but can curl into a ball! neither sowbug nor pillbug! O conundrum! O missing link*!

at that point I’d already started just calling them all “isopods,” though.

* cylisticids evolved conglobation separately from armadillidiids; they aren’t really a “missing link.” in fact, land isopods probably evolved a “pillbug” form at least six or seven times independently, it works pretty well!

Okay because I'm genuinely curious, what does everybody call this little guy

Put where you're from in the tags if you want! (general regions only obviously pls don't doxx yourselves)