Dolichopodidae of the Netherlands

Study Extent

All data on Dolichopodidae of the Netherlands were included in this dataset, regardless of the way how they were collected. Two main datasource types could be distinguished: (i) collected samples and specimens residing in a public or private collection (further referred to as "SPECIMEN EXAMINATION), and (ii) observations registered by citizen scientists in the Dutch portal Waarneming.nl. In some cases, the latter observations were supported by collected specimens (further referred to as "FIELD OBSERVATIONS").

Sampling

SPECIMEN EXAMINATION: next to more occasional collections by e.g., light traps or pitfall traps, the most widely used collecting methods for Dolichopodidae include sweep nets (SW) (see further), Malaise traps (MT), and pan traps (PT), in particular blue (BPT), white (WPT) and yellow coloured traps (YPT). Yields of sweep net collections were retrieved in two different ways: either as individual specimens from the net (SW = sweep-netting), or as an entire yield that is stored in a collecting jar with alcohol immediately after collection (MSW = ad random sweep-netting (massive)). FIELD OBSERVATIONS: mostly occasional observations of long-legged flies that are posted in the Waarneming.nl portal.

Quality Control

SPECIMEN EXAMINATION: specimens were identified by the principal investigator (PI) using reliable identification keys and an extensive reference collection. Specimens in public Dutch collections previously identified by Henk Meuffels (80-90'ies) were not systematically checked by the PI except for certain species that were considered doubtful by the PI. FIELD OBSERVATIONS: all citizen science data that are included in this dataset were validated by the PI, including those that had been validated previously (prior to the NLBIF project).

Method steps

1. The identity of recently collected specimens and specimens of citizen scientist's observations was thoroughly checked (see Quality Control). Most of the identifications of specimens in public collections carried out previously by the late Dutch dolichopodid expert Henk Meuffels were considered reliable. From these collections, only species that had not been collected recently or did not show up in Waarneming.nl were checked by the principal investigator. Only reliable records (i.e. with certain identification of the species) were included in the dataset.

Dolichopodidae s.s. sensu Pollet & Brooks (2008). This includes species of all subfamilies except for the basal Microphorinae and Parathalassiinae. Eleven subfamilies are represented in the Netherlands: Achalcinae (2 genera, 6 species), Diaphorinae (6 genera, 31 species), Dolichopodidae (8 genera, 87 species), Hydrophorinae (8 genera, 17 species), Medeterinae (4 genera, 41 species), Neurigoninae (1 genus, 5 species), Peloropeodinae (3 genera, 4 species), Rhaphiinae (2 genera, 21 species), Sciapodinae (2 genera, 13 species), Sympycninae (7 genera, 36 species), and Xanthochlorinae (1 genus, 4 species). Pollet, M. & Brooks, S.E. (2008) Long-Legged Flies (Diptera: Dolichopodidae). In: Capinera, J.L. (Ed.). Encyclopedia of Entomology. 2nd Edition. Springer: pp. 2232-2241.

1. Diptera
   common name: flies and midges rank: order
2. Dolichopodidae
   common name: long-legged flies rank: family
3. Achalcinae
   rank: subfamily
4. Diaphorinae
5. Dolichopodinae
   rank: subfamily
6. Hydrophorinae
   rank: subfamily
7. Medeterinae
   rank: subfamily
8. Neurigoninae
   rank: subfamily
9. Peloropeodinae
   rank: subfamily
10. Rhaphiinae
    rank: subfamily
11. Sciapodinae
    rank: subfamily
12. Sympycninae
    rank: subfamily
13. Xanthochlorinae
    rank: subfamily
14. Achalcus
    rank: genus
15. Australachalcus
    rank: genus
16. Argyra
    rank: genus
17. Asyndetus
    rank: genus
18. Chrysotus
    rank: genus
19. Cryptophleps
    rank: genus
20. Diaphorus
    rank: genus
21. Melanostolus
    rank: genus
22. Dolichopus
    rank: genus
23. Ethiromyia
    rank: genus
24. Gymnopternus
    rank: genus
25. Hercostomus
    rank: genus
26. Muscidideicus
    rank: genus
27. Poecilobothrus
    rank: genus
28. Sybistroma
    rank: genus
29. Tachytrechus
    rank: genus
30. Aphrosylus
    rank: genus
31. Hydrophorus
    rank: genus
32. Liancalus
    rank: genus
33. Machaerium
    rank: genus
34. Orthoceratium
    rank: genus
35. Scellus
    rank: genus
36. Schoenophilus
    rank: genus
37. Thinophilus
    rank: genus
38. Dolichophorus
    rank: genus
39. Medetera
    rank: genus
40. Systenus
    rank: genus
41. Thrypticus
    rank: genus
42. Neurigona
    rank: genus
43. Acropsilus
    rank: genus
44. Chrysotimus
    rank: genus
45. Micromorphus
    rank: genus
46. Nematoproctus
    rank: genus
47. Rhaphium
    rank: genus
48. Amblypsilopus
    rank: genus
49. Sciapus
    rank: genus
50. Anepsiomyia
    rank: genus
51. Campsicnemus
    rank: genus
52. Lamprochromus
    rank: genus
53. Sympycnus
    rank: genus
54. Syntormon
    rank: genus
55. Telmaturgus
    rank: genus
56. Teuchophorus
    rank: genus
57. Xanthochlorus
    rank: genus

The Netherlands, a country in Western Europe, northeast of Belgium, west of Germany and east of England. Also data from the islands in the Waddensea were included in the dataset, but no data from Dutch Caribbean islands (e.g., Bonaire) or Surinam.