Butterfly o'r wythnos

Rydw i wedi bod ychydig yn esgeulus wrth bostio heriau rheolaidd, felly byddaf yn ceisio i godi'r cyflymder. Pwy all ddweud unrhyw beth am ieir bach yr haf hwn i mi? Y mwyaf rydych yn ei gael yw ei bod yn o hanner gorllewinol yr Unol Daleithiau. Credyd ar gyfer y teulu, genus or species and ridiculous credit for subspecies and where it is . . . → Darllen Mwy: Butterfly o'r wythnos

Blasu gwyfynod yn Napa

Roedd hi'n ddiwrnod hyfryd heddiw yn ardal y bae, felly es i fyny i Napa a Dyffryn y Pab. Roeddwn yn sgowtio rhyw diriogaeth newydd ar gyfer gwyfyn blodau bach, Heliolonche celeris, mae'n debyg ei fod yn aros am fwy o dywydd braf cyfagos i ddod i'r amlwg. This season has been a bit tardy because of all of . . . → Darllen Mwy: Blasu gwyfynod yn Napa

Genius y Wasg, v. IV

Rhandaliad arall o Athrylith y Wasg, ac efallai dipyn o bêl feddal. (Yikes mae'r rhain yn hawdd i'w canfod) Who can tell me whats wrong with this article?

Efallai y byddaf yn gyrru gormod

The clouds broke this afternoon in San Francisco and the sun began to shine. The upcoming warm weather induced an all too familiar feeling, one that I should be out collecting insects and not sitting indoors! While I have already been to a handful of places this spring, I have a long season of collecting . . . → Darllen Mwy: Efallai y byddaf yn gyrru gormod

Rhan Aquamoth 3

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!

Afonydd o Aur

Ychydig o ddelweddau o fy nhaith gwyfyn penwythnos i lawr i Shell Creek, Sir San Luis Obispo. Mae'r gwanwyn cynnar ar hyd yr arfordir canolog yn syfrdanol, ac yr oedd y ffyrdd cefn yn orlawn o wylwyr blodau. Roedd yna ddwsinau o geir yn cael eu meddiannu gan deuluoedd allan ar benwythnos mewn car, roedd llawer wedi pecyn bwyd ac eistedd i wylio'r . . . → Darllen Mwy: Afonydd o Aur

Rhan Aquamoth 2

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

Answer to last week’s Genius of the Press

For all those who abstained from voting (I want to assume some readers must have known the identity of our mystery caterpillar, but were too lazy to comment), here is the answer (after the break).

. . . → Darllen Mwy: Answer to last week’s Genius of the Press

Aquamoth!

Another amazing animal from Hawaiia 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!

California Gwanwyn

Spring has come to northern California and moths are on the wing. I took a quick trip up to the Sierra foothills over the weekend and hiked up the steep slopes above the American River. Above is pictured Xanthothrix ranunculi f. albipuncta (Noctuidae: Stiriinae). It happens to be sitting on a beautiful california . . . → Darllen Mwy: California Gwanwyn