Gan Chris Grinter, on August 15th, 2011% ANSWER: This wasn’t easy – but this large and beautiful moth was from Australia and is in the family Xyloryctidae (Philarista sp.). We have a handful of representatives of this group here in the US and Ted MacRae over on Beetles in the Bush has a few great photographs of them. Somehow I think we . . . → Darllen Mwy: Dydd Llun Gwyfynod
Gan Chris Grinter, ar Awst 1af, 2011% amldentata Chiricahua (Geometridae)
Mae gwyfyn dydd Llun hwn yn rhywogaeth ysblennydd o fynyddoedd Arizona – amldentata Chiricahua, a Geometrid. Yr unig leoliad hysbys ar gyfer y rhywogaeth hon yw ar ben uchaf mynyddoedd y Chiricahua uwchben 9,000 traed (a oedd yn unig bruned i crisp). Gobeithio nad oedd y tân . . . → Darllen Mwy: Dydd Llun Gwyfynod
Gan Chris Grinter, ar Orffennaf 18fed, 2011% I’ll keep the ball rolling with Arctiinae and post a photo today of Ctenucha brunnea. This moth can be common in tall grasses along beaches from San Francisco to LA – although in recent decades the numbers of this moth have been declining with habitat destruction and the invasion of beach grass (Ammophila arenaria). Ond . . . → Darllen Mwy: Dydd Llun Gwyfynod
Gan Chris Grinter, ar Mehefin 20fed, 2011% Rydw i'n mynd i gadw'r bêl i fynd gyda'r gyfres hon a cheisio ei gwneud hi'n fwy rheolaidd. Byddaf hefyd yn canolbwyntio ar dynnu sylw at rywogaeth newydd bob wythnos o’r casgliadau enfawr sydd yma yn Academi Gwyddorau California. Dylai hyn roi digon o ddeunydd i mi ar gyfer… o leiaf ychydig gannoedd o flynyddoedd.
Grammia . . . → Darllen Mwy: Dydd Llun Gwyfynod
Gan Chris Grinter, ar Ebrill 19eg, 2011%
Ffynhonnell: Wikipedia
Mae'n ymddangos bod gan Richard Branson syniad newydd; i achub y lemwr cynffonog (Catur lemur) trwy eu mewnforio i'w Ynys Virgin Brydeinig breifat. Fel y mae'r erthygl yn nodi, gwariodd Branson filiynau o bunnoedd a blynyddoedd o ymdrech i droi'r ynys yn “y mwyaf yn ecolegol . . . → Darllen Mwy: Richard Branson yn Idiot
Gan Chris Grinter, ar Ebrill 6ed, 2011% iawn – ychydig o ymddiheuriadau am beidio â chael delweddau llawn * eto * o'r larfa dan sylw (Byddaf mewn ychydig ddyddiau!). Dros y penwythnos roeddwn allan gyda grŵp o fyfyrwyr Berkeley ar Mount Hamilton a chasglodd yr ymgeisydd PhD Meghan Culpepper ychydig o rywogaethau o Scaphinotus a rhai larfa! Felly y sbesimen . . . → Darllen Mwy: Revelaed Dirgelwch
Gan Chris Grinter, on June 9th, 2010%
This recent article in the American Naturalist has taken a second look at some of the famously inflated species estimates, some going high as 100 million (Erwin, 1988). Estimates conducted by the authors indicate that projections above 30 million have probabilities of <0.00001. Their estimated range is more likely to be between 2.5 a . . . → Darllen Mwy: Estimates of Global Species Diversity
Gan Chris Grinter, on April 1st, 2010% A continuation of the aquamoth series, this time with video from Science Friday! Oes, I have to link it because wordpress won’t embed… Diolch Ted, figured it out!
Gan Chris Grinter, on March 25th, 2010% I came across the full-text PDF of the amphibious moth article and extracted the tree showing the radiation of this species group and probable evolution of the amphibious traits. Interesting to note the case shape, and each moth is endemic to its own volcano in the Hawaiian archipelago.
This is a Bayesian analysis of . . . → Darllen Mwy: Rhan Aquamoth 2
Gan Chris Grinter, ar Fawrth 24ain, 2010%
Another amazing animal from Hawaii – a completely amphibious caterpillar (published in the March 22 PNAS). While there are a few aquatic Lepidoptera, all of them have gills that keep them restricted to the water (meddwl chi, we are talking only about the larval stage). If their stream dries up, so does the caterpillar. . . . → Darllen Mwy: Aquamoth!
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