[PF-2600] Badly merged higher taxa with double letters - Vallonia gracilicosta has incorrect taxonomy Created: 01/Sep/16  Updated: 03/Mar/17  Resolved: 07/Sep/16

Status: Closed
Project: Portal Feedback
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Bug Priority: Blocker
Reporter: Feedback Bot Assignee: Markus Döring
Resolution: Fixed Votes: 0
Labels: clb, collector-a2e9eca4, nub
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Location: http://www.gbif.org/species/2296014
User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.63 Safari/537.36
Referrer: http://www.gbif.org/species/search?q=vallonia+gracilicosta&dataset_key=d7dddbf4-2cf0-4f39-9b2a-bb099caae36c
Screen Resolution: 1366 x 768

Issue Links:
blocks PF-2611 The fish Lota lota appears as a snail... Closed
blocks PF-2614 incorrect classification for Lotidae ... Closed
blocks PF-2615 Mola Mola incorrect classification Closed
relates to POR-3218 Merge 2 Thalassiosiraceae families Open
relates to POR-3155 Allow family backbone homonyms Open
Epic Link: Improve Backbone Building February 2017


GBIF ID 2296014 (Vallonia gracilicosta) is a land snail: Kingdom Animalia Phylum Molluscsa Class Gastropoda Order Stylommatophora Family Valloniidae; not a Dipteran insect as the GBIF profile describes.

Reporter: Matthew
E-mail: matthew.s.bolton@gmail.com

Comment by Roderic D. M. Page [ 01/Sep/16 ]

Strange bug as AFAIK none of the checklists that prove provide this name make this link to the dipteran fly family.

Comment by Tim Robertson [ 02/Sep/16 ]

I looked also and came to the same conclusion.

My suspicion is this is a bad algorithmic assembly of the nub itself, due to Valonia vs Val[l]onia.

Valonia complicata Walker, 1856
Valonia planiscutellata Frey, 1964

My hunch being that those genera were created in the backbone, and then when the otherwise unseen Vallonia genus was added it was too aggressively fuzzy-matched and all those snails were brought in under the existing flys of Valiona.

Or something along those lines.

Comment by Matthew Blissett [ 02/Sep/16 ]

That seems likely; the more recent changes to the NUB matching allow double letters and single letters to be considered similar, but reduced the similarity of other spelling changes.

Comment by Roderic D. M. Page [ 05/Sep/16 ]

Good spot, currently both Valonia (one l, fly http://www.gbif.org/species/8707617 ) and Vallonia (two l's, snail http://www.gbif.org/species/2296006 ) are treated as children of the fly family Platystomatidae http://www.gbif.org/species/9504. Perhaps one for the https://github.com/gbif/backbone-patch to resolve...

Comment by Markus Döring [ 05/Sep/16 ]

Thats likely the cause, yes. And not easy to fix I bet. The reason the 2 genera exist is they differ in authorship.
Maybe we need to restrict the name normalization that reduces double chars to a single one to epithets only and leave the genus as is. I'll add a test and see how that can be adressed. The backbone patch unfortunately won't help here as its names also undergoes the name normalization

Comment by Markus Döring [ 07/Sep/16 ]

Backbone building fixed in https://github.com/gbif/checklistbank/commit/176a739b1e7823082d1d302833c7a7cdd4933fbc to just apply character dedoublication for bi/trinomials. Gonna be fixed live with the next nub build

Comment by Markus Döring [ 21/Feb/17 ]

See also https://github.com/gbif/checklistbank/issues/19

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