Showing posts with label grasshoppers. Show all posts
Showing posts with label grasshoppers. Show all posts

Tuesday, August 06, 2024

Desert dweller

The pallid-winged grasshopper (Trimerotropis pallidipennis) is a common grasshopper of the family Acrididae, native to the deserts of western North America along with South America, ranging from British Columbia to Argentina. (Wikipedia)

Native to the deserts? And here they are, in the rainforest belt of Canada's we(s)t coast.

Stone-coloured, stone-patterned. Except that stones don't fly.

On iNaturalist, I searched for reports of this species in BC. The latest observation, yesterday, was in the dry interior, near 70 Mile House. Well, yes, this is desert country. But Vancouver Island? Here, a mere stone's throw (ok, 85 km., but still ...) from me on the central east coast, Hucuktlis Lake is the wettest place in North America.

But then I looked at iNaturalist's map. All the observations of this grasshopper on Vancouver Island are on the east coast, but on the very edge, along the shore. Where there are dunes. Dry dunes. Grey and brown patches on Google satellite views.

Walking the shore at low tide at Oyster Bay, along the upper intertidal edge, these grasshoppers sprang up with every few steps I took. At high tide, they hang out in the sandy, dry dunes. Again, on the iNaturalist map, there are 5 observations in Campbell River, all 5 of them on the little spit at Oyster Bay where I see them every summer. Our own mini-desert.

Vegetation of habitats consists of shrubs, forbs, and grasses with a preponderance of bare ground on which these grasshoppers commonly bask and rest. Outside their usual rangeland habitats, pallidwinged grasshoppers find favorable environmental conditions in weedy city lots. (USDA Bulletin)

The rabbit holes a simple search for a name drags me down! One question not answered, though, was this: what are they doing in the intertidal zone? What is there to eat down there? Do they eat green algae? Or do they just like the warmth of the sun-baked stones?

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El Chapulín de Alas Pálidas (Trimerotropis pallidipennis) es un saltamontes común de la familia Acrididae, nativo de los desiertos del oeste de norteamérica y sudamérica, desde Columbia Británica hasta Argentina. (Wikipedia)
¿Nativo de los desiertos? Y aquí están, en la zona de los bosques pluviales de la costa del oeste de Canadá.

Foto: el saltamontes. Del color de las piedras, con los diseños de las piedras. Pero las piedras no vuelan.

En iNaturalist, busqué reportajes de esta especie en CB. La última, registrada ayer, fue en el interior seco de la provincia, cerca de 70 Mile House. Bueno, eso sí es desierto. ¿Pero en la isla Vancouver? Aquí, a poca distancia (85 km. apenas) de mi casa en la costa del oriente, el lago Hucuktlis es el sitio más húmedo de toda Norteamérica.

Pero luego miré el mapa de iNaturalist. Todas las observaciones de esta especie están en la costa del este, en la mera orilla, casi en la playa. Donde hay dunas arenosas. Dunas secas. Pintadas de gris y café en el mapa satélite de Google.

Mientras caminaba por la zona intramareal superior en Oyster Bay, estos chapulines saltaban con casi cada paso que daba. Cuando la marea sube, se congregan en las dunas. Otra vez, mirando el mapa de iNaturalist, veo que en Campbell River, hay 5 observaciones. Y todas, las 5, estaban en la lenguita de tierra en Oyster Bay donde los veo cada verano. En nuestro propio desierto microscópico.
La vegetación de los habitats consiste de arbustos, malezas y pastos, con gran parte de tierra desnuda, en la cual estos saltamontes comunmente descansan y se asolean. Fuera de sus habitats usuales los chapulines de alas pálidas encuentran condiciones del ambiente favorables en ciudades, en terrenos baldíos con malezas. (Boletín de USDA)
Una simple búsqueda por un nombre de animal, y ¡en qué enredos me mete! Y una pregunta a que no hubo respuesta fue esta: "¿Qué es lo que hacían los saltamontes en la zona intramareal? ¿Qué hay de comer allí? ¿Es que comen algas verdes? ¿O simplemente les gusta el calor de las piedras tostadas por el sol?





Sunday, July 07, 2019

Critters, critters, critters

... collected from here and there, some alive, some recently dead. I'm sorting last month's photos, playing catch up.

Harvestman on a house plant (Kalanchoe tomentosa)

Hover fly on yarrow. I'm not sure of the other beetle with the spots. Tyee Spit.

Twin berries, Lonicera involucrata, with an orange fly. Tyee Spit.

A crane fly who died on my windowsill. Aren't those wings pretty?

Looking at you.

Grasshopper on the Oyster Bay shore. Probably Pallid-winged Grasshopper, Trimerotropis sp. Mostly, they jumped away as soon as my shadow came anywhere near; for this one, I crawled up, inch by inch, down at his level. (No shadow!)

Another Oyster Bay grasshopper, same afternoon, same location. But this one didn't wait around for me. He may be a different species, but I can't identify him, and the Pallid-wings are quite variable.

Recently squashed spider. Just the eyes and mustache. One of the mesh web weavers, by the eye arrangement. (See BugGuide)

Water shots next, I think.

Thursday, August 11, 2016

Where were we now?

Almost a month ago, I was in the middle of a series about Oyster Bay Shoreline Park, when I dropped it to run off to Tahsis and prowl through the bush with family, taking photos of mushrooms and slugs and the like.

I'm back now, my family have all taken themselves back to their respective homes, and I've only a few Tahsis photos to mull over, seeds for one or two more posts.

Time to get back to Oyster Bay.

For today, here's another grasshopper from the headland.

Unidentified grasshopper. I must upgrade my hopper recognition wetware.

Grasshopper found close to the same place, two days earlier, about the same time. Is it the same species, different colour morph, older or younger, or a separate species? These critters are confusing!

This one's only about 15 minutes from home.

Tomorrow, more Oyster Bay plants.
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