This morning we had access to ASU’s Edwin C. Roworth Shell Collection, currently located in a storage area off campus. There are tentative plans to reactivate this collection – estimated to contain more than 100,000 shells – and integrate it with the new Alameda Natural History Collection space. In the meantime, marvel at a very superficial photo inventory of this impressive collection here.
Most recent update: February 26, 2014.
SCAN has activated the module for authoring interactive identification keys, even though the keys themselves are not yet live for potential users. In what follows some of the basic interfaces and practices for authoring keys are introduced. Prospective SCAN members interested in preparing keys individually or in collaboration should contact Nico Franz.
Most recent update: July 15, 2014 (minor editing updates; link to video).
Our group is involved in promoting concept taxonomy. Here are some preliminary, and evolving, step-by-step instructions on how to employ the Euler/X toolkit to align two taxonomies or phylogenies. A short video is also available here.
Lead members of the Exploring Taxon Concepts (ETC) and Euler projects held a joint workshop at the School of Information Resources and Library Sciences (SIRLS) at the University of Arizona on February 19-20, 2014. On the meeting agenda were mutual updates, project coordination, and the formulation of detailed user scenarios for ETC tools; including: taxon-character matrix generation, matrix review, multi-entry interactive identification key generation, taxon concept similarity comparison, taxonomic revision support, and ETC/Euler interfaces and workflow integration.
Shown on the group photo, from left to right: (sitting) Lorena Endara, Hong Cui (ETC PI), Heather Cole, and Elvis Yu; (standing) Nico Franz, Bertram Ludäscher (Euler PI), James Macklin, Joel Sachs, Robert Morris, Thomas Rodenhausen, and Shizhuo Yu.
Editor Prof. Elliot Shubert writes that among the notable comments were: “A carefully argued exploration of the use of taxonomic concepts, and justification of the “sec” notation, which provides a sound basis for further development of these ideas.” And: “It is the treatment of tracking the history of concepts of taxa that I believe is of great consequence, particularly as taxonomy moves into an increasingly electronic realm.” We thank the Editors for this endorsement.
Complete citation: Franz, N.M. & J. Cardona-Duque. 2013. Description of two new species and phylogenetic reassessment of Perelleschus Wibmer & O’Brien, 1986 (Coleoptera: Curculionidae), with a complete taxonomic concept history of Perelleschus sec. Franz & Cardona-Duque, 2013. Systematics and Biodiversity 11: 209–236. Link
Citation of Award: Shubert, E. 2014. Taylor & Francis Prize 2013. Systematics and Biodiversity 12: 125-126. Link
Members of the Franz Lab will attend a Phenotype RCN Meeting at the University of Arizona’s Biosphere2 this weekend (February 21-22, 2014). This year’s agenda will focus on environment ontologies. Read more
Second chapter in the “let’s get some practice” series. In this week’s reading practice we will explore the interaction of alternative coding schemes and tree/optimization outcomes, both “by hand” and with WinClada and NONA. In particular, we will apply and compare simple binary, non-additive multi-state, and complex additive character coding schemes. We will assess their effects on cladogram length and on the character state optimizations along the internal cladogram nodes. We will start by learning how to code complex character state hierarchies as additive binary as well as additive multi-state characters. Please do some reading of the handout beforehand.
Linked here is an interim result of my attempt to align two influential weevil classifications by Thompson (1992) and Alonso-Zarazaga & Lyal (1999) with the Euler/X toolkit. For additional information see this link.
Update, February 18, 2014: Here is another alignment of two phylogenetic classifications of weevil families and subfamilies, according to Kuschel (1995) and Marvaldi & Morrone (2002).
- Kuschel, G. 1995. A phylogenetic classiﬁcation of Curculionoidea to families and subfamilies. Memoirs of the Entomological Society of Washington 14: 5-33.
Marvaldi, A.E. & J.J. Morrone. 2000. Phylogenetic systematics of weevils (Coleoptera: Curculionoidea): a reappraisal based on larval and adult morphology. Insect Systematics & Evolution 31: 43-58.