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Posts from the ‘Video’ Category

ETC-Euler Taxonomic Concept Alignment Demonstration Video – Minyomerus 2015 versus Minyomerus 1982

This 8-minute screenshot video, produced in late April, 2015, demonstrates the interaction of the Exploring Taxonomic Concepts (ETC) and Euler/X software tools.

The ETC team has built a highly useful and effective front-end web service to the Euler/X reasoning services, allowing users to import two concept taxonomies through an on-line file management system, provide articulations, run input visualizations, obtain logically consistent alignments, and extract these products from the web interface to the desktop. The underlying ideas and methods are explained in Franz et al. (2015).

The capabilities of the user interface are illustrated with the Minyomerus use case, aligning two classifications authored in 2015 and 1982, respectively.

ETC Euler Taxonomic Concept Alignment Demonstration – Minyomerus 2015 versus 1982 from taxonbytes on Vimeo.

Weekly reading: Leonelli on classificatory theory in biology

Sabina Leonelli has authored numerous papers on bio-ontologies that relate to our Spring 2015 theme. For this week we will read:

Leonelli, S. 2013. Classificatory theory in biology. Biological Theory 7: 338-345. Available here.

Also consider my post summarizing where we are right now and might considering going.

Stress testing a Curculio occidentis rostrum model

Via Andrew Jansen – explorations into weevil rostrum mechanics.

Curculio occidentis rostrum model, exposed to Buckling Force at 100x from taxonbytes on Vimeo.

Euler/X toolkit demonstration video – July 2014

I screen-recorded a 7:35 minute video demonstrating the current (July 2014), basic functionality of the Euler/X toolkit for aligning multiple taxonomies (see: Concept Taxonomy). The video is up on Vimeo.

Euler/X toolkit demonstration – July 2014 from taxonbytes on Vimeo.

Abstract. The Euler/X toolkit ( takes in two input taxonomies, a set of concept-to-concept articulations, and additional logic constraints to assess their logical consistency, infer the set of maximally informative relationships among the input concepts, and visualize a merge taxonomy. The basic functionality of the toolkit is shown based on a use case of aligning two alternative concept phylogenies of the weevil genus Perelleschus sec. 2001/2013. More information is available at

Rhynchophorus palmarum – the South American palm weevil

Weevil natural history news from Gamboa, Panama. We are continuing to look for weevils that can be observed feeding and reproducing in the field. One such opportunity is starting to develop because we discovered a fallen palm tree of the species Oenocarpus mapora which is very common on the Cerro Pelado at Gamboa. On the fallen log we first spotted two specimens of Metamasius hemipterus, and today a female of the South American palm weevil Rhynchophorus palmarum. The female was feeding, possibly also hiding, near the central core of the broken off stem. A short video of this female is available here. We will monitor the log for more dryophthorid weevils and possible mating activities.

Post in development..

Systenotelus stockwelli in focus

This morning I had an opportunity to revisit an interaction that was part of my graduate thesis research; i.e. the reproductive association of Carludovica “Panama hat palms” and acalyptine weevils in the genus Systenotelus.

Carludovica plants are members of the Cyclanthaceae and are common along roads and trails in and around Gamboa, Panama. The development of the flowering process is short (essentially lasting 24 hours) and highly predictable – one can observe an inflorescence’s spathes opening and detaching during the night prior to the main flowering event. Having spotted one such plant yesterday night at the “Frog Pond”, I arrived at the fully opened and extended inflorescence of C. palmata at 5:30 am on the following morning.

Sometimes, especially in open habitats where Carloduvica plants receive high sun exposure, leaf-cutter ants and stingless bees will find the inflorescences early and cut off the staminodes, thereby reducing the attractiveness of the inflorescence and intensity of the weevil-attracting scents. This was not the case with this inflorescence, however. Likely more than 300-500 weevils pertaining to four acalyptine species arrived during this morning. I managed to record about 2.5 hours of close-up weevil feeding and reproductive behavior under very good conditions. A short 1-minute video (shot with a point-and-shoot camera) is posted here.

Of primary interests to me was filming the behavior of Systenotelus stockwelli – possibly for the first time. Presently three species are recognized in the genus Systenotelus, of which S. stockwelli is the smallest and also that which most closely resembles weevils in the related genus Perelleschus in terms of general shape. However, unlike Perelleschus, Systenotelus weevils a not pollinators of Carludovica, and instead of primarily feeding on the fleshy red pulp, the larvae are seed predators. Hence the evolution of Perelleschus and Systenotelus marks a transition from weevils being largely beneficial to being detrimental to the plant’s reproductive success.

Only about 15-20 individuals of S. stockwelli arrived at the inflorescence, at least 30 minutes after other species of Azotoctla, Ganglionus, and Perelleschus had arrived. Both females and males of S. stockwelli are quite active in the first 1-2 hours following arrival. I was able to observe and film multiple instances of feeding, probing and drilling oviposition sites, mating attempts, copulatory courtship, mate guarding, male-to-male conflicts, male-to-female conflicts, and oviposition.

In the next few days we hope to find more inflorescences of C. palmata around Gamboa, and also dissect fruits which contain the weevil larvae (mostly of Perelleschus, according to initial samples). We are also looking for other weevils that can be observed feeding and reproducing at sites that can be carefully observed and recorded on video.

Evening update. I revisited the inflorescence after 8 pm today. The staminodes were on the ground and in a state of rotting. Only Ganglionus, Perelleschus, and very small species pertaining to an undescribed genus (though often identified as Phyllotrox – which is not typically on cyclanths) were present, in lower numbers, and not on the surface layer.

Euler/X Android Application Demonstration

Euler/X news. Harika Sabella and Shizhuo Yu in Bertram Ludäscher’s lab at UC Davis have created a demonstration video for a prototype Android app allowing users to visualize two taxonomies, add and edit articulations, and view possible world merges. Check out the nicely narrated video via this link.

An extended version of the demo can be found here.

SCAN presentation video at the iDigBio Education & Outreach Workshop

Neil Cobb presents a SCAN progress update at the 2014 iDigBio Education & Outreach Workshop. Watch all of iDigBio’s Vimeo uploads here:

Southwest Collections of Arthropods Network – Neil Cobb from iDigBio on Vimeo.