| 2001 | - Willem Ellis started a website on leafminers in Europa. Determination of species through dichotomous tables. The site is in both English and Dutch and generously provided with images.
- de site is coded with HTML using TextWrangler
- hosting is provided by XS4ALL on the URL http://www.xs4all.nl/~wnellis
| 2003 | - links are maintained using Dreamweaver
- the site contains some 1300 links
| 2004 | - copyright under Creative Commons license
- hosting by HostingXS with URL http://bladmineerders.nl
| 2007 | - extension with a glossary
- introduction of visual design with CSS
| 2010 | - website statistics with Google Analytics
| 2011 | - extension with information and determination of galls
| 2016 | - files and folders on October 27, 2016:
- 9,086 HTML-files
- 9,222 images
- 9,384 folders
- Willem Ellis is awarded with the Uyttenboogaart-Eliasen prijs, honoring his lifelong work in entomology
- start of conversion to WordPress with Jaap Wiering from Fanagalo
| 2017 | September 2017- extension with information and determination of fungi
October 2017- extension with tabular determination of host plants on species level, 9,279 pages are added
- 12,998 records (bilingual pages) in database (October 9, 2017)
| 2018 | - improvement and speeding up of the editorial process
- financial support for hosting by Naturalis and EIS
| 2019 | - addition of errata “Plant Galls of Europe” by J.C. Roskam
- addition of dichotomous determination for galls by J.C. Roskam
- some 26,000 pages (November 2019)
| 2020 | - technical renovation of the theme design
- some 32,000 pages (December 23, 2020):
- 606 higher taxa of host plants
- 1,573 host genera with dichotomous determination
- 1,572 host genera with tabular determination
- 9,439 host species with tabular determination
- 3,221 higher taxa of parasites
- 15,120 parasite species
- 569 stages of parasites
- 356 galls with dichotomous determination
| 2021 | - hosting by VDX
- count of parasites on February 8, 2021:
- 3,367 higher taxa of parasites
- 15,617 parasite species
- 569 stages of parasites
| 2022 | - technical improvements
- changes in editorial process
- acceleration of pageview
- almost 50,000 pages (February 12, 2022):
- 10,048 references
- 14,234 hosts
- 25,222 parasites
- and 18,325 images
| now | - currently the site bladmineerders.nl contains:
- 44,431 pages with hosts and parasites, both species and higher taxa
- 10,974 references
- 143 posts, mainly news
- 261 glossary items
- 19,038 images
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