Monthly Archives: March 2012

Tatraonyx

Tetraonyx sp.

Tatraonyx so. in Mexico. This individual is covered in pollen.

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Atlanticus

Atlanticus are ground leaf litter dwelling brachypterous katydids. One came to whiskey in the Ozarks once – that was memorable. My friend was after them all week and that was the only female we saw the entire three days we were there.

Male Atlanticus sp.

Female Atlanticus sp.

DinoStaph

Zalobius spinicollis

A dinosaur of a staphylinid – Zalobius spinicollis, an endemic to the Pacific coast of North America. These sluggish pseudopsines leark around moss along streams.

and Zalobius nancyae

The two species look pretty similar, but are allopatric: spinicollis lives is coastal, while nancyae inhabits the interior mountains.

Elaphrus

A photo I took at McLean Bogs near Dryden New York. I think I was a sophomore in college when I took this one during a class field trip.

Elaphrus clairvillei

not insect

Uroctonus mordax - I think

From Standish Hickey State Park in California.

Chalcedon Checkerspot

Euphydryas chalcedona

Euphydryas chalcedona

 

A Chalcedon Checkerspot waits for the sun on a chilly morning in May – at the Los Padres National Forest in California.

The pictured rove beetle is a beach rove beetle

Thinopinus pictus larva

Thinopinus pictus larva

 

Thinopinus pictus are beach specialists that inhabit the pacific coast of North America. They are conspicuous and attractive beetles that have attracted biologists and a fairly rich literature exists on their natural history. I particularly like the dilated stubby legs that are likely adaptive for life on sand.

The species is known to sport two pigment forms, a light tan and a melanic form. The melanic forms are less common and both types live in matching substrates. I bet given the poor dispersal abilities of these beetles (they can’t fly) that the melanic forms have arisen multiple times. We have some idea of melanic pathways in insects, it would be interesting to see if there is not only phenotypic, but also genomic convergence between geographically disperate melanic populations. Either outcome, either the melanic forms are monophyletic and not independent acquisitions, or convergent both phenotypically and genomically, or convergent phenotypcially but divergent genomically, would be an interesting find. People have started testing these sorts of questions in birds, but the beetles have not received as much attention yet.