Report on the Sciaroidea workshop held during the 7th International Congress of Dipterology, August 10, 2010, San Jose, Costa Rica and follow up discussions.
This workshop was held the morning of August 10 and was well attended, with between 20 and 40 people present for each talk. We had six speakers representing a diverse range of nationalities, who all gave interesting and engaging talks (Jostein Kjaerandsen, Sweden; Sarah Oliveira, Brazil; Olavi Kurina, Estonia; Chris Borkent, Canada; Jan Ŝevčík, Czech Republic; and Marten Grund, Germany). A wide range of topics were addressed, from regional taxonomic surveys and generic revisions, to tribal phylogeny, new methods of morphological analysis, and the use of Mycetophilidae in amber as palaeoecological indicators. Five of the six talks are available in pdf format from me.
Title of presentation
Species recognition trade-off between structural wing colours and terminalia in fungus gnats
Sarah Siqueira Oliveira
Evolution of Mycetophilidae Leiinae: limits, diversity, phylogeny, and biogeographical relationships
Preliminary results on diversity of Clastobasis species in the Afrotropics (Diptera: Mycetophilidae)
Systematics of Leptomorphus (Mycetophilidae)
Oriental Sciaroidea: current state of knowledge and interesting new taxa
Chironomidae and Mycetophilidae from Dominican amber as palaeoecological indicators
After the workshop many of the participants had lunch together and then got together over a few bottles of wine the following night. During this time we discussed many of the issues and goals we felt were important in pursuing Mycetophilidae and Sciaroidea systematics and phylogeny. Below I have summarized the main points, as well as mentioned particular projects being undertaken and by whom.
Items needed to increase collaboration/output
- Produce email list for sharing of photos/figures of genitalia, pdfs. Also pictures of people at ICD7! (maybe done through Sciaroidea.info? If so need to email out instructions on how to join up. You can subscribe to the RSS feed on Sciaroidea.info to receive updates about new postings to the site).
- Familiarize everyone with collecting protocols and specimen handling:
- for DNA work, Peter Kerr is putting these protocols together for distribution to the group
- For a chemical method of drying specimens for pinning see Brian Brown’s article on HMDS http://www.phorid.net/phoridae/hmds.htm. This method requires no expensive equipment and allows specimens to be pinned for long term storage rather than degrading and disintegrating in alcohol
- Discussed what is needed for a comprehensive world catalogue/database online (see below the list of potential fields to include for each species record)
- Let other workers know about upcoming museum trips to help material flow from place to place.
Problems that need to be addressed
Need to collaborate more with colleagues worldwide to reduce the amount of regional taxonomy (and accompanying synonymy etc.)
- New Neotropical key (preferably web based, image rich, matrix based) to be worked on by Dalton, Sarah and Chris
- Vlad is obtaining Matile’s worldwide key to the Mycetophilidae (s.l.?) to translate and pass around for comments and eventual publication
- Jostein to put together basic methods/protocol for taking pictures of Sciaroidea (including WIPs). This will include pictures of the photographic setup. (see attached papers as well)
- Dalton has a copy of Matile’s world key to Keroplatidae (via Rafaela) for translation and comments.
Marc Pollet (Belgium) has recently completed collecting for a Diptera biodiversity project in Ecuador and will be sending the Mycetophilidae to Peter Kerr who will then distribute specimens to interested parties. If interested then contact Peter (firstname.lastname@example.org). See flytimes issue 42 page 36 (http://www.uoguelph.ca/nadsfly/News/FlyTimes/issue42.pdf) for a report of Marc’s collecting trip to his Ecuador site and a few tantalizing pictures!
I have attached a file containing a list of potential fields to include in a super-database/catalogue of mycetophilid information. Most fields will be associated either with a list of options with check boxes or with a free form text box. Please let me know (email@example.com) if you think of any other information fields to add.
Jostein and some collaborators have produced a paper detailing a new way of observing previously unnoticed wing colour/refraction patterns (paper included with talk pdfs)
Fields for catalog:
|Genus type species|
|Key to genus available, regions covered|
|Species type locality|
|Species holotype sex|
|Holotype location confirmed? : person and date|
|Natural History notes:|
|other references to species|
|General Distribution: NE NT PA OR AU AF|
|List of Lat and Long (decimal degrees, comma and semicolon separated)|
|Collection methods that work well|
|method of control|
|detailed morphological studies|
|used as exemplar in phylogenetic study|
|intraspecific variation noted|
Original and used names: Mycetophila lugens Wiedemann, 1817:68. = Brachypeza simplex Bukowski, 1934:184.
Swedish sources: Mycetophila ornaticollis [misid.]: Zetterstedt 1852:4205 [SK]; Allodia lugens: Tullgren & Wahlgren 1920–22:468 [Sweden]; Wahlgren 1921:182 [SK, JÄ]; Edwards 1931:32 [TO]; Parallodia lugens: Plassmann 1975c:28 [LU]; Plassmann 1975b:52 [LU]; Plassmann 1978b:151 [LU]; Plassmann 1979:382 [LU]; Allodia lugens: Plassmann 1980b:183 [LU]; Allodia simplex: Plassmann 1980b:183 [LU]; Allodia (Allodia) lugens: Hackman et al. 1988:297 [Sweden]; Brachypeza simplex: Hackman et al. 1988:306 [Sweden]; Allodia (Allodia) lugens: Chandler (2005) [Sweden]; Kjærandsen 2005:12 [SK]; Allodia (Allodia) lugens: Kjærandsen et al. 2007:54 [Wide — •SK•SÖ•UP•JÄ•LU•TO•]; Jakovlev, Kjærandsen & Viklund 2008:38 [SÖ].
World distribution: Holarctic; widely distributed in Europe.
Remarks: Common and frequently very abundant species.
Original and used names: Allodia (s. str.) embla Hackman, 1971:6.
Swedish sources: Allodia embla: Plassmann 1979:381 [LU]; Allodia (Allodia) embla: Hackman et al. 1988:297 [Sweden]; Chandler (2005) [Sweden]; Allodia (Allodia) embla: Kjærandsen et al. 2007:54 [Boreal–boreonemoral — •SÖ•LU•]; Jakovlev, Kjærandsen & Viklund 2008:38 [SÖ].
World distribution: Holarctic; northwesterly in Europe.
Remarks: Nearctic occurrence according to Chandler (2005) and common on Iceland (Kjærandsen, Kurina & Ólafsson 2007).
Original and used names: Allodia anglofennica Edwards, 1921:122.
Swedish sources: Allodia (Allodia) anglofennica: Kjærandsen et al. 2007:54 [Boreal–boreonemoral — •SÖ•LU•]; Jakovlev, Kjærandsen & Viklund 2008:38 [SÖ].
World distribution: Holarctic; widely distributed in Europe.
Original and used names: Allodia (Allodia) confusa Zaitzev, 2003:88 [nom. n.]. = Allodia simplex Zaitzev, 1983:1918 [junior secondary homonym].
Swedish sources: Allodia (Allodia) confusa: Kjærandsen et al. 2007:54 [Boreal — •LU•].
World distribution: Holarctic, in Europe probably restricted to the boreal region.
Original and used names: Anatella fungina Plassmann, 1984:46
Swedish sources: Anatella fungina: Kjærandsen et al. 2007:58 [Boreal — •LU•].
World distribution: European; known only from Austria (type), Sweden and Norway.
Original and used names: Phronia longelamellata Strobl, 1898:288. = Phronia minuta Landrock, 1928:241. ? = Phronia dubioides Matile, 1969:249.
Swedish sources: Phronia dubioides: Plassmann 1979:384 [LU]; Phronia longelamellata: Chandler (2005) [Sweden]; Phronia longelamellata: Kjærandsen et al. 2007:90 [Nemoral–boreonemoral — •SK•VG•]; Phronia dubioides: Kjærandsen et al. 2007: 100 [Doubtful].
World distribution: Palaearctic; mainly northwestern in Europe.
Remarks: Previously confused with Phronia vitrea following Lundström (1906) who illustrated P. vitrea under the name P. longelamellata (see under Phronia vitrea). According to Chandler (2005) Phronia dubioides is a probable synonym of P. longelamellata, yet to be confirmed.
Original and used names: Ceroplatus dispar Dufour, 1839:37.
Swedish sources: Keroplatus dispar: Sörensson 1994:15 [SK]; Sörensson 1994:22 [SK, ÖL, ÖG, HS, NB]; Keroplatus dispar: Kjærandsen et al. 2007:[Doubtful].
Remarks: Although many specimens from Sweden fit slightly better the characters given for K. dispar, Kjærandsen et al. (2007) did not accept it as good species separate from Keroplatus testaceus, see further comments under K. testaceus.
Original and used names: Sciophila diluta Zetterstedt, 1860: 6556.
Swedish sources: Sciophila diluta: Zetterstedt 1860:6556 [VG]; Wahlgren 1921:167 [VG]; Väisänen 1982a:38 [VG]; Väisänen 1984:328 [VG]; Mycomya diluta: Kjærandsen et al. 2007:98 [doubtful].
Remarks: The holotype is a female that cannot be recognized (Väisänen 1984), and remains a nom. dub.
Original and used names: Sciophila occultans Winnertz, 1864:719. = Sciophila corcyrensis Lundström, 1912b:515.
Swedish sources: Mycomya corcyrensis: Hackman et al. 1988:223 [Sweden]; Mycomya (Mycomya) occultans: Chandler (2005) [Sweden]; Mycomya (Mycomya) occultans: Kjærandsen et al. 2007:99 [Doubtful].
Remarks: Both Hackman et al. (1988) and Chandler (2005) probably give secondary references to Mycomya corcyrensis as recorded by Plassmann (1979:373), but this record was corrected to Mycomya humida by Väisänen (1984). Hence, there is no confirmed record of M. occultans from Sweden.