#Holarctic
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minnesotaseasons.bsky.social
Alfredo Colon uploaded 2 photos of Holarctic Treefrogs (Dryophytes spp.) 10/21/2026. www.minnesotaseasons.com/Amphibians/H...
Holarctic Treefrog (Dryophytes sp.)
October 31, 2026 at 6:02 AM
philipamies.eurosky.social
The relationship between stone pine species and nutcracker species interaction is coevolved mutalism.

link.springer.com/chapter/10.1...
The Impact of Seed Dispersal by Clark’s Nutcracker on Whitebark Pine: Multi-scale Perspective on a High Mountain Mutualism
The holarctic mutualisms between Cembrae Pines (Pinus, Pinaceae) and nutcrackers (Nucifraga, Corvidae) comprise important textbook examples of interaction and coevolution. However, only recently we ha...
link.springer.com
October 28, 2026 at 10:49 AM
philipamies.eurosky.social
They are entirely dependent on nutcrackers to pry open their cones and cache their seeds for reproduction.

link.springer.com/chapter/10.1...
The Impact of Seed Dispersal by Clark’s Nutcracker on Whitebark Pine: Multi-scale Perspective on a High Mountain Mutualism
The holarctic mutualisms between Cembrae Pines (Pinus, Pinaceae) and nutcrackers (Nucifraga, Corvidae) comprise important textbook examples of interaction and coevolution. However, only recently we ha...
link.springer.com
October 27, 2026 at 6:22 AM
journalsystpal.bsky.social
Sualdea et al. provide a new comprehensive phylogenetic analysis of Democricetodontinae — an important Oligocene–Miocene cricetid subfamily:

Phylogenetic relationships and Miocene diversification of the extinct rodent subfamily Democricetodontinae (Cricetidae) buff.ly/ZTdjAz1

#PaleoSky #Holarctic
October 22, 2026 at 10:45 AM
ajcann.bsky.social
Adelius spp.

There are only 4 known UK species but I couldn't tell you which one this is :-)

#Wasps #Hymenoptera #VC55 #Braconidae
Adelius spp. Braconid wasp. Further Information: Shaw, M.R. & Huddleston, T. (1991) Classification and Biology of Braconid Wasps (Hymenoptera: Braconidae). RES Handbooks for the Identification of British Insects, Volume 7, Part 11. London: R. Entomol. Soc. and van Achterberg, C. (1990). Illustrated key to the subfamilies of the Holarctic Braconidae (Hymenoptera: Ichneumonoidea). Zoologische Mededelingen, 64(1), 1-20. van Achterberg, C. (1990). Illustrated key to the subfamilies of the Holarctic Braconidae (Hymenoptera: Ichneumonoidea). Zoologische Mededelingen, 64(1), 1-20. Adelius spp. Braconid wasp. Further Information: Shaw, M.R. & Huddleston, T. (1991) Classification and Biology of Braconid Wasps (Hymenoptera: Braconidae). RES Handbooks for the Identification of British Insects, Volume 7, Part 11. London: R. Entomol. Soc. and van Achterberg, C. (1990). Illustrated key to the subfamilies of the Holarctic Braconidae (Hymenoptera: Ichneumonoidea). Zoologische Mededelingen, 64(1), 1-20. van Achterberg, C. (1990). Illustrated key to the subfamilies of the Holarctic Braconidae (Hymenoptera: Ichneumonoidea). Zoologische Mededelingen, 64(1), 1-20. Adelius spp. Braconid wasp wing venation. Further Information: Shaw, M.R. & Huddleston, T. (1991) Classification and Biology of Braconid Wasps (Hymenoptera: Braconidae). RES Handbooks for the Identification of British Insects, Volume 7, Part 11. London: R. Entomol. Soc. and van Achterberg, C. (1990). Illustrated key to the subfamilies of the Holarctic Braconidae (Hymenoptera: Ichneumonoidea). Zoologische Mededelingen, 64(1), 1-20. van Achterberg, C. (1990). Illustrated key to the subfamilies of the Holarctic Braconidae (Hymenoptera: Ichneumonoidea). Zoologische Mededelingen, 64(1), 1-20.
October 20, 2026 at 2:16 PM
tlafontrapnouil.bsky.social
Glad to share our newly published paper in Global Change Biology!!

In this study, we looked at 171 peatlands across the Northern Hemisphere, together with a large-scale experiment, to explore how bacterial diversity is connected to ecosystem functioning.

onlinelibrary.wiley.com/doi/10.1111/...
Tipping Points in Bacterial Richness Amplify Extracellular Enzyme Activities in Northern Peatlands
Using a trans-Holarctic survey in Sphagnum-dominated peatlands, we identify a critical bacterial biodiversity threshold. Below this threshold, ecosystem function shifts, increasing enzyme activities ...
onlinelibrary.wiley.com
September 21, 2026 at 3:02 PM
pardosa.bsky.social
A bee mimic fly, Sericomyia sp., on a potentilla flower.
From Wikipedia: Sercomyia are large flies with species that are bee mimics both short pile and long pile. Sericomyiine flower flies are common in boreal forests across the Holarctic region and southward at higher elevations into the Oriental and Neotropical regions. Sericomyia species have larvae of the rat-tailed maggot type, often found in ponds rich in decomposing vegetation where they filter out microorganisms as their food.
September 18, 2026 at 2:40 PM
8legs2fangs.bsky.social
Really cool paper from one of my students is now out. More mygalomorph research! biogeography.pensoft.net/article/1827...
Hypothesis-driven biogeography to estimate rates and dates when fossil evidence is scarce: a case study using an ancient, Holarctic genus of spider (Araneae, Antrodiaetidae, Antrodiaetus)
Understanding when lineages diverged is a common inquiry within the field of biogeography and often requires a rate of evolution and a means to calibrate the phylogeny to absolute time. While fossil e...
biogeography.pensoft.net
September 4, 2026 at 3:36 PM
acrapouni.bsky.social
A small watercolor work for #BugtorWeek that I literally lost, which is why I only post it now. Anyway that's Bugtor with the Herald moth wings!

Go and revisit other works with the # !
A watercolour painting of Arcane Herald Viktor from the show Arcane, his back turned to the viewer and orange/brown moth wings sprouting from his back. Screenshot of the Wikipedia page of the Herald moth. The text reads : "The herald (Scoliopteryx libatrix) is a moth of the family Erebidae. The species was first described by Carl Linnaeus in his 1758 10th edition of Systema Naturae. It is found throughout the Palaearctic and Nearctic (Holarctic).
August 26, 2026 at 7:22 PM
philipamies.eurosky.social
www.nature.com/articles/s41...
A supergene underlies linked variation in color and morphology in a Holarctic songbird - Nature Communications
Trait genetic architecture influences how populations evolve and adapt. Genomic analysis finds that an inversion links genetic variation controlling redpoll finch color and bill shape, allowing the ma...
www.nature.com
August 26, 2026 at 11:32 AM
mirrorthestars.bsky.social
Look who I found & I earned a new badge on @inaturalist.bsky.social 💛🕸️
Goldenrod Crab Spider on the squash leaves. #spider
Large yellow Goldenrod Crab Spider on squash leaves in my garden this morning. I love these spiders. Misumena vatia is a species of crab spider with holarctic distribution. In North America, where it is the largest and best-known flower spider, it is called the goldenrod crab spider or flower (crab) spider, because it is commonly found hunting in goldenrod sprays in the autumn. Young males in the early summer may be quite small and easily overlooked, but females can grow up to 10 mm (excluding legs); males reach 5 mm at most. ARACHNID BADGE from SEEK on iNaturalist. So fun!
August 24, 2026 at 3:27 PM
russmalin.bsky.social
My bookshelf is groaning (again) and am desperately trying to free up some room. There will be others but this is the first blatant plug…

ebay.io/m/Z5hYeZ
Buntings And Sparrows | eBay UK
Covers all the buntings (Palearctic) and sparrows (Nearctic) - 108 species - of the Holarctic region. These birds are members of the sub-family emberizinae, and are represented in nearly every habitat in the region. They also present considerable identification problems.
ebay.io
August 23, 2026 at 4:17 PM
lablit.bsky.social
Trans-Atlantic Dispersal and Introgression Explain Holarctic Disjunct Distributions in Vanessa #Butterflies onlinelibrary.wiley.com/doi/10.1111/...
Trans‐Atlantic Dispersal and Introgression Explain Holarctic Disjunct Distributions in Vanessa Butterflies
Species with disjunct distributions have long puzzled evolutionary biologists and biogeographers. Long-distance dispersal can play a pivotal role in generating intra-specific disjunct distributions, ...
onlinelibrary.wiley.com
May 7, 2025 at 8:25 AM
kannlesen87.bsky.social
Nest blow flies
Members of the large genus Protocalliphora, Holarctic flies whose maggots (Fig. 0/1) are obligatory parasites of nestling birds. The intermittent, temporary blood-sucking habits of these maggots are similar to the tropical muscid nest maggots.
#magicthegathering #art #illustration
Maggot Token for MTG
January 18, 2025 at 2:02 PM
hennige.bsky.social
I am Syrphus Torvus, the Hairy-Eyed Flower Fly
Are you impressed?
#HoverFly #Nature #Flower #iPhone
Syrphus torvus, the Hairy-eyed Flower Fly, is a common species of hoverfly found in the Holarctic. (Wikipedia)
September 20, 2025 at 8:09 AM
conservbytes.bsky.social
A dataset of radiocarbon dates from Holarctic mammal collagen purified with high-quality chemistry

www.nature.com/articles/s41...
A dataset of radiocarbon dates from Holarctic mammal collagen purified with high-quality chemistry - Scientific Data
Scientific Data - A dataset of radiocarbon dates from Holarctic mammal collagen purified with high-quality chemistry
www.nature.com
April 10, 2026 at 11:24 AM
conservbytes.bsky.social
Oh shit, oh shit, oh shit! http://conservationbytes.com/2015/07/24/ice-age-no-abrupt-warmings-and-hunting-together-polished-off-holarctic-megafauna/
November 17, 2024 at 5:04 AM
conservbytes.bsky.social
As 1 of the authors, my blog take on synergy of climate warming & humans for #biodiversity http://wp.me/phhT4-4xq https://twitter.com/sciencemagazine/status/631508457154301957
Ice Age? No. Abrupt warmings and hunting together polished off Holarctic megafauna
wp.me
November 17, 2024 at 5:01 AM
conservbytes.bsky.social
Final version out in @sciencemagazine: Abrupt warming events drove Late Pleistocene Holarctic megafaunal turnover http://www.sciencemag.org/content/349/6248/602
November 17, 2024 at 4:58 AM
conservbytes.bsky.social
Given warming & humans wiped out most Late Pleistocene large mammals http://wp.me/phhT4-4xq, caribou likely to go soon @essmind #ICCB2015
Ice Age? No. Abrupt warmings and hunting together polished off Holarctic megafauna
wp.me
November 17, 2024 at 4:55 AM
conservbytes.bsky.social
Ice Age? No. Abrupt warmings and hunting together polished off Holarctic megafauna http://www.blogtopsites.com/p/27869206
November 17, 2024 at 4:47 AM
conservbytes.bsky.social
Ice Age? No. Abrupt warmings and hunting together polished off Holarctic megafauna http://goo.gl/fb/LCpDkK
Ice Age? No. Abrupt warmings and hunting together polished off Holarctic megafauna
goo.gl
November 17, 2024 at 4:46 AM
conservbytes.bsky.social
Ice Age? No. Abrupt warmings and hunting together polished off Holarctic megafauna: Did ice ages cause the Ple... http://bit.ly/1GHqIiy
Ice Age? No. Abrupt warmings and hunting together polished off Holarctic megafauna
bit.ly
November 17, 2024 at 4:46 AM
conservbytes.bsky.social
Ice Age? No, abrupt warmings & hunting helped polish off Holarctic megafauna http://conservationbytes.com/2015/07/24/ice-age-no-abrupt-warmings-and-hunting-together-polished-off-holarctic-megafauna
November 17, 2024 at 4:46 AM
wafflecut.bsky.social
Also, whenever I look something like this up, it takes about two clicks into Wikipedia before Wikipedia starts going “well, what actually is species?” Lol
The findings indicate that based on mitochondrial DNA, common ravens from the rest of North America are more closely related to those in Europe and Asia, than to those in the California clade, and that common ravens in the California clade are more closely related to the Chihuahuan raven (C. cryptoleucus) than to those in the Holarctic clade. 231116) Ravens in the Holarctic clade are more closely related to the pied crow (C. albus) than they are to the California clade. (24] Thus, the common raven species as traditionally delimited is considered to be paraphyletic. 24] One explanation for these genetic findings is that common ravens settled in California at least two million years ago and became separated from their relatives in Europe and Asia during a glacial period. One million years ago, a group from the California clade evolved into a new species, the Chihuahuan raven. Other members of the Holarctic clade arrived later in a separate migration from Asia, perhaps at the same time as humans and wolves about 15,000 years ago. "131 [25] A 2011 study suggested that there are no restrictions on gene flow between the Californian and Holarctic common raven groups, and that the lineages can remerge, effectively reversing a potential speciation. 26] A recent study of raven mitochondrial DNA showed that the isolated population from the ds i en.wikipedia.org spu S.
December 12, 2025 at 10:37 PM