Deadly Nectar   2 comments

Felipe del Bosque Blog August 12th 2013

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Beach Weather

Weatherwise the past week has been one of sunshine and showers.  The week started wet but as we progressed through the days then the sun became more and more of a feature until finally over the weekend the days were warm and cloudless.  We even managed a few nights without rain. The rain that did fall was not too heavy, just enough to keep things moist and help maintain a flow of water in the creek.

Building Blocks

Over recent years there has been a downturn in the fortunes of the White-nosed Coatis, (Nassua narica).  Their numbers fell precipitously and for a period of several years the individuals that were seen appeared to suffering some sort of disease.  Their fur was sparse and mangy-looking and their demeanor seemed lethargic and lacking their normal inquisitive vitality.  Last year the males, which are solitary, (the name of a single male coati is Coati Mundi), were back sniffing around the grounds in search of whatever they could find.  This year the grounds have been home to roaming bands of gregarious females with a plethora of young in attendance.  It would seem that whatever malady had apparently been affecting them seems to have run its course and now people can see them with relative ease on most of the trails.  The Australian Screw Pines, (Pandanus sp), have been fruiting recently and it is not uncommon to see one the male White-nosed Coatis at the top of the plant ripping the exotic pinecone-looking fruit to pieces.

Screw Pine

Another animal whose numbers appear to be on the increase are the Collared Peccaries, (Tayassu tajacu).  They can be seen on any of the trails but the Titi Trail seems to be their preferred habitat.  Everyone walking the Titi Trail will invariably come into contact with the peccaries.  The Bosque Trail Camera Project has given us the opportunity of observe 24 hours/day, 7 days/week the animal movement at least on that one trail.  Each week when the camera memory is downloaded there is an air of anticipation and excitement as to what will have passed by over the previous week.  Inevitably it is the peccaries, coatis and the Agoutis, (Dasyprocta punctata), that take centre stage in regards to numbers and frequency with some lesser players in the weekly cycle of activity who taking up the supporting roles.


We did get our first photo of a Puma, (Puma concolor), this week on the Titi Trail.  It will come as no surprise to regular readers of this blog that it looks like the resident and distinctive female “Half Tail” that walked through the cameras field of vision.  Unfortunately she did so in such a fashion that she triggered the camera as she was passing and so we are missing her head.  For reasons as yet unknown, wildcats have a predilection for the scent “Calvin Klein Obsession for Men”.  To that effect the lodge has purchased a bottle of said perfume to spray in front of the cameras with a view of holding the cats attention for long enough that we get some photos with her head on her shoulders.

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Yellow Peril

The rain combined with constant warmth has resulted in a lot of the fungi producing fruiting bodies, mushrooms and toadstools.  Some of the fungal fruiting bodies are so obscure that they resemble something more alien in form than most people are used to seeing  Many times people don’t even know it is a fungus they are looking at.  Then, of course, there are the more familiar parasol-shaped mushrooms that occur in all sizes and colors, many of which are diagnostic features in helping identify the specimen to species level.

Leucocoprinus bernbaunii.

Growing saprophytically on the rotting wood of dead trees it is not uncommon to see the bright yellow granular caps of Leucocoprinus birnbaunii.  It is found throughout tropical regions as well as growing in glasshouses in more temperate areas.  It is quite surprising how many fungi know few boundaries and have a global distribution.  Despite its resemblance to a marzipan cake decoration it is inedible and regarded by some authorities as deadly poisonous.  As with many fungi it is always best to look and not touch.

Leucocoprinus bernbaunii

Banana Song

The rains have continued to fall so the frogs have continued to call.  Last week I posted a photo of a Small-headed Frog, (Dendropsophus micracephalus).  Located in the same area amongst the Water Hyacinth and Water Lettuce as well as all around the back of the pond is almost identical looking Banana Frog, (Dendropsophus ebreccatus).  Morphologically the frogs can be distinguished with close scrutiny.  The Small-headed Frog has a line running along the uppersides of the body while the Banana Frog has a small yellow patch under the eye.  But it is when they are calling that the males can be readily discerned.  The Small-headed Frog has a high pitched “eek eek eek eek” call while the male Banana Frog is more of a longer “neeurk”.

Banana Frog

Both species utilize the same areas to lay their eggs on the upper leaf surfaces of plants floating on the water.  They are small flat masses of leaves numbering about 50 eggs.  The eggs develop until about a week, the egg mass liquidizes and the tadpoles wriggle off into the water to complete their developement.

Philip is a biologist, writer and photographer as well as the onsite naturalist guide at Bosque del Cabo Rainforest lodge on the Osa Peninsula, Costa Rica.

Photo Feature 

Crabby Behaviour

Sometimes you witness aberrant animal behavior that allow you to identify that something outside of the norm in happening.  I was passing the patch of Lantana camara near the Bosque pond one day and was idly watching the butterflies that had been summoned by the sun.  I noticed a butterfly that was resting on a flowerhead but at a strange angle and with no wing movement.  Most of the other butterflies were warmed by the solar radiation and were flitting from one flower to the next, stopping only briefly to imbibe some of the nectar.  This individual, a White-banded Fatima, (Anartia fatima), was not.  I knew fron experience what was likely to have happened and luckily had the camera with me so took a closer look.

Thomisidae sp

Sure enough my thoughts were confirmed, a beautiful Crab Spider was positioned at the top of the flower head, its chelicerae, (fangs), buried in the body of the butterfly which must have succumbed to the quick acting venom.  Crab-spiders are placed in the arachnid family: Thomisidae and they are ambush predators that also the masters of disguise.  This one had a body colored in a fashion to match exactly the flower in which it was lurking, bright yellow.  Butterfly vision allows them to see color and movement but they don’t readily determine image.  This unfortunate individual would not have know what hit it until too late.

Crab Spider

The Crab Spider unlike its butterfly prey which has large compound eyes has small simple eyes that only produce sharp vision up close but can discern movement from some distance away.  They don’t build webs but use a silken line to secure them to the blooming flower.  Female Crab Spiders can change their color to a certain degree to match them to the flower.  They sit and wait with large strong front legs outstretched until the prey alights then grab it, hold it tight and inject the venom. The liquefied juices of the prey are sucked out of the puncture wounds.  They attain their name of Crab Spider due to their uncanny ability to walk sideways.

Anartia fatima

Text and Photographs are taken from the forthcoming book:

The Natural History of Bosque del Cabo by Philip Davison

Temperature and Rainfall

Average Daily Rainfall 0.38 ins.  Total Weekly Rainfall 2.63 ins

Average Daily Rainfall 10.4 mm.  Total Weekly Rainfall 82.8 mm

Highest Daily Temp 88°F.  Lowest Daily Temp 74°F.

Highest Daily Temp 31.1°C.  Lowest Daily Temp 23.2°C.

Species List for the Week


  • Mantled Howler Monkey
  • Spider Monkey
  • Squirrel Monkey
  • White-faced Capuchin Monkey
  • Nine-banded Armadillo
  • Tamandua
  • Common Tent-making Bat
  • Western Red Bat
  • Northern Raccoon
  • White-nosed Coati
  • Agouti
  • Paca
  • Red-tailed Squirrel
  • Underwood’s Pocket Gopher
  • Collared Peccary
  • White-lipped Peccary


  • Mealy Amazon
  • Orange-chinned Parakeets
  • Red-lored Amazon
  • Scarlet Macaw
  • Gray-necked WoodRail
  • Great Curassow
  • Crested Caracara
  • Yellow-headed Caracara
  • Rufus Piha
  • Black-hooded Antshrike
  • Chestnut-backed Antbird
  • Short-billed Pigeon
  • Red-Capped Manakin
  • Chestnut-mandibled Toucan
  • Bright-rumped Atilla
  • Golden-crowned Spadebill
  • Great Kiskadee
  • Great Tinamou
  • Black-throated Trogon
  • Black Vulture
  • Turkey Vulture


  • Barred Ameiva
  • Cat-eyed Snake
  • Central American Smooth Gecko
  • Central American Whiptail
  • Common Anolis
  • Common Basilisk
  • Clawless Gecko
  • Four-lined Ameiva
  • Green Iguana
  • Golfo Dulce Anolis
  • Litter Skink
  • Mediterranean House Gecko
  • Mussarana
  • Pentaprion Anolis


  • Banana Frog
  • Black and Green Poison Arrow Frog
  • Golfo Dulce Poison Arrow Frog
  • Fitzinger’s Rain Frog
  • Gladiator Frog
  • Masked Smilisca
  • Marine Toad
  • Milky Frog
  • Parachuting Red-eyed Green Tree Frog
  • Red-eyed Green Tree Frog
  • Savage’s Thin-fingered Frog
  • Small-headed Frog


  • Anartia Fatima
  • Anartia jatrophae
  • Colobura dirce
  • Dryas iulia
  • Glutophrissa drusilla
  • Heliconius erato
  • Heliconius hecale
  • Heliconius ismenius
  • Heliconius sapho
  • Hermeuptychia hermes
  • Mesosemia zonalis
  • Morpho cypris
  • Morpho helenor
  • Morpho menelaus
  • Parides erithalion
  • Phiaethria dido
  • Phoebis sennae


  • Alamandra  cathartica Flowering
  • Alpinia purpurata Flowering
  • Apeiba tibourbou Fruiting
  • Arachis pintoi Flowering
  • Arundina graminifolia Flowering
  • Attalea rostrata Fruiting
  • Bauhinia variegata Flowering
  • Brosimum utile Fruiting
  • Caryocar costaricense Flowering
  • Cascabella thevetia Flowering and Fruiting
  • Citrus spp  Fruiting
  • Clusia rosea Flowering and Fruiting
  • Clusia vallerii Fruiting
  • Cocos nucifera Flowering and Fruiting
  • Crestentia alata flowering and Fruiting
  • Costus speciosus Flowering
  • Couroupita guianensis Flowering and Fruiting
  • Dypsis lutescens Flowering and Fruiting
  • Etlingera elatior Flowering
  • Ficus citrifolia Fruiting
  • Ficus insipida Fruiting
  • Heliconia chartacea Flowering
  • Heliconia latispatha Flowering
  • Heliconia pogonantha Flowering
  • Heliconia psittacorum Flowering
  • Heliconia rostrata Flowering
  • Hibiscus rosa-sinensis Flowering
  • Hymenaea coubaril Fruiting
  • Hymenocallis littoralis Flowering
  • Inga spp Fruiting
  • Ixora coccinea Flowering
  • Lantana camara Flowering and Flowering
  • Lagerstroemia speciosa Fruiting
  • Morinda citrifolia Fruiting
  • Musa acuminate Flowering and Fruiting
  • Nephelium lappaceum Fruiting
  • Pachira quinata Flowering
  • Piper auritum Flowering and Fruiting
  • Piper nigrum Fruiting
  • Piper umbellatum Flowering and Fruiting
  • Pleiostachya pruinosa Flowering
  • Plumeria rubra Flowering
  • Psychotria sp Fruiting
  • Stachytarpheta frantzii Flowering
  • Zammia sp Flowering



2 responses to “Deadly Nectar

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  1. Hi Phillip, still very much enjoying your blogs and your photo’s are as impressive as ever,
    but your latest begs a question – how on earth did it come to light that puma’s have a predeliction for Calvin Cline Obsession for Men?!! Best regards, Ian.


  2. Love your spread. Please keep them coming. Ron A.

    Ronald Allison


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