Piper

The diverse Piper genus (Piperaceae) is used as a model system for a variety of ecological studies, including work done by Dyer at La Selva on tritrophic interactions (i.e., plant [Piper] – caterpillar – parasitoid).  It’s also economically important – we grind the dried fruit or seed to produce pepper.

Here is a flower spike of a common species in Cahuita –I have no clue which – and a spider with stabilimentum that was often present with patches of Piper.

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Ctenonotus cristatellus

This Polychrotid is a non-native to Costa Rica but is extremely common in parts of the Caribbean coast. It’s native to various Caribbean islands, such as Puerto Rico and Hispanola, and this one was caught outside Cahuita.  The males not only develop a large, colorful dewlap, but also a crested tail, giving it the species epithet cristatellus.  It’s fairly large and relatively distinctive in shape, similar to Norops capito.

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Immature Lepidopterans

I’ve accumulated a few photographs of caterpillars and pupa in my ‘to publish’ folder for Montegraphia, so I’m putting them up now.  They’re not the greatest works, but they were all cool finds in the field.  The pupa was attached to the wall of the field station in San Ramon – there are most likely several photos floating around the Internet of this pupa given that it was pointed out to the course while at the station last winter. 

The green caterpillar was one of a few on the hiking path in Zaleski State Forest.  It was peculiar the number of caterpillars we encountered, presumably searching for a good, safe place to pupate.

The yellow caterpillar was common in Palo Verde this summer, and would inevitably be crawling down my shirt after walking through some brush.  The yellow hairs cause a rash, as shown on Mahmood’s arm, and were quite bothersome when combined with the heat, humidity and mosquitoes….

Perhaps I’ll be able to speculate on identifications after I’ve taught that section in Entomology this semester…

_1032141Camping at Zaleski State Forest - 09.04.2010 - 15.01.41Poisonous caterpillar - 06.27.2010 - 10.53.45Poisonous caterpillar - 06.27.2010 - 10.52.24

Crop dusting bananas

From the top of an old water tower, Boa and I watched a regionally famous crop duster spray Dole’s banana plantation in Valle de La Estrella.  The agility and accuracy of the pilot was exceptional – with each pass, the pilot cut off flow while flying over a road and simultaneously rose slightly to narrowly miss the power lines running parallel to the road.

The plantation spans much of Valle de La Estrella and has consequently dramatically altered the hydrology of the region.  Various dikes and canals are used to control flow through the plantation into the river, and proposed projects to increase control through construction of additional channels threaten a protected coral reef south of the Rio La Estrella’s mouth (in Cahuita) due to increased sediment load.

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Nonsense.