Swammerdamella marginata Cook,

Amorim, Dalton de Souza & Brown, Brian V., 2020, Urban Scatopsidae (Diptera) of Los Angeles, California, United States, Insect Systematics and Diversity 4 (1), No. 1, pp. 1-41: 21-24

publication ID

http://doi.org/ 10.1093/isd/ixaa001

publication LSID

lsid:zoobank.org:pub:BCD57714-6B3C-4E4C-AB32-3686BEB2DA74

DOI

http://doi.org/10.5281/zenodo.3847002

persistent identifier

http://treatment.plazi.org/id/EE454154-FFF6-BA5F-3859-F8DCFAC3FEFF

treatment provided by

Felipe

scientific name

Swammerdamella marginata Cook
status

 

Swammerdamella marginata Cook 

( Figs. 5, 6View Figs, 21, 22View Figs, and 57–61)

Swammerdamella marginata Cook, 1956b: 24  , figs. 1D (male terminalia), 2D (male segment 7), 3G (wing), 4E (male segment 6), 5H

(female terminalia). Type locality: United States, New Mexico, Las Vegas. Distr.– United States (New Mexico), Mexico (Guadalajara).

Ref.– Cook, 1967: 4 (Nearctic catalog). Holotype ♂, NMNH.

Diagnosis. Male tergite 6 large, produced posteriorly into a broad, curved lobe, sternite 6 ornamented, more shallowly incised posteriorly.

Material Examined. 4 ♂♂, 2 ♀♀, United States, California, Los Angeles Co., Los Angeles, Exposition Park , 34.018°N 118.288°W, BioSCAN site 1, 28 March–4 April 2014, Malaise trap, 54 m, Coll. Lisa Gonzalez and Dean Pentcheff, BioSCAN sample 15775GoogleMaps  ; 1 ♂, same data, but 1–8 April 2016, BioSCAN sample 18198GoogleMaps  ; 1 ♀, same data, but BioSCAN sample 16170GoogleMaps  ; 3 ♀♀, same data, but BioSCAN sample 16029GoogleMaps  ; 1 ♀, same data, but 3–10 June 2016, BioSCAN sample 18273GoogleMaps  ; 3 ♂♂, 8 ♀♀, same data, but 2–9 May 2014, BioSCAN sample 15915 (1♀ on slide)GoogleMaps  ; 1 ♀, same data, but BioSCAN sample 18373GoogleMaps  ; 8 ♂♂, 1 ♀, United States, California, Los Angeles Co., Los Angeles, University Park , 34.034°N 118.281°W, BioSCAN site 3, 2–9 April 2014, Malaise trap, 63 m, Coll. Peggy Hentschke, BioSCAN sample 15897GoogleMaps  ; 1 ♀, same data, but 3–10 December 2014, BioSCAN sample 16969GoogleMaps  ; 1 ♂, 1 ♀, same data, but BioSCAN sample 16251GoogleMaps  ; 1 ♀, same data, but BioSCAN sample 16072GoogleMaps  ; 1 ♀, same data, but 26 February–5 March 2014, BioSCAN sample 15721GoogleMaps  ; 2 ♂♂, 2 ♀♀, same data, but 30 April–7 May 2014, BioSCAN sample 16068GoogleMaps  ; 1 ♀, same data, but 29 October–5 November 2014, BioSCAN sample 16774GoogleMaps  ; 1 ♀, same data, but BioSCAN sample 16603GoogleMaps  ; 1 ♂, United States, California, Los Angeles Co., Los Angeles, Los Feliz , 34.118°N 118.284°W, BioSCAN site 4, 29 March–4 April 2014, Malaise trap, 220 m, Coll. Mark and Jane Pisano, BioSCAN sample 15950GoogleMaps  ; 1 ♂, 3 ♀♀, same data, but 1–15 March 2014, BioSCAN sample 15757GoogleMaps  ; 1 ♀, same data, but BioSCAN sample 16808GoogleMaps  ; 4 ♀♀, same data, but BioSCAN sample 16632GoogleMaps  ; 10 ♂♂, 40 ♀♀, United States, California, Los Angeles Co., Los Angeles, Silverlake , 34.093°N 118.274°W, BioSCAN site 5, 29 March–5 April 2014, Malaise trap, 166.1 m, Coll. Walter Renwick, BioSCAN sample 15916GoogleMaps  ; 2 ♂♂, 2 ♀♀, same data, but 1–8 February 2014, BioSCAN sample 15589GoogleMaps  ; 1 ♂, 31 ♀, same data, but BioSCAN sample 16268GoogleMaps  ; 2 ♂♂, 42 ♀♀, same data, but BioSCAN sample 16113GoogleMaps  ; 2 ♂♂, 33 ♀♀, same data, but 1–8 March 2014, BioSCAN sample 15735GoogleMaps  ; 2 ♂♂, 3 ♀♀, same data, but 3–10 May 2014, BioSCAN sample 16109GoogleMaps  ; 1 ♂, 66 ♀♀, same data, but 2–9 November 2013, BioSCAN sample 15318GoogleMaps  ; 5 ♀♀, same data, but 28 September–5 October 2013, BioSCAN sample 15226GoogleMaps  ; 4 ♂♂, United States, California, Los Angeles Co., Los Angeles, Los Feliz , 34.116°N 118.279°W, BioSCAN site 6, 1–8 February 2014, Malaise trap, 199 m, Coll. Jeff, Aaron and Jacob Koch, BioSCAN sample 15572GoogleMaps  ; 3 ♀♀, same data, but BioSCAN sample 16107GoogleMaps  ; 1 ♂, same data, but 1–9 March 2014, BioSCAN sample 15746GoogleMaps  ; 2 ♀♀, same data, but 4–10 May 2014, BioSCAN sample 16104GoogleMaps  ; 1 ♂, same data, but 15– 20 September 2013, BioSCAN sample 15207GoogleMaps  ; 2 ♀♀, same data, but 29 March–14 April 2014, BioSCAN sample 15939GoogleMaps  ; 1 ♂, United States, California, Los Angeles Co., Los Angeles, Silverlake , 34.102°N 118.257°W, BioSCAN site 7, 29 March–5 April 2014, Malaise trap, 158.9 m, Coll. Joe Hogg, BioSCAN sample 15834GoogleMaps  ; 1 ♀, same data, but BioSCAN sample 16193GoogleMaps  ; 1 ♀, same data, but BioSCAN sample 16189GoogleMaps  ; 2 ♀♀, same data, but 1–8 March 2014, BioSCAN sample 15830GoogleMaps  ; 1 ♀, same data, but 26 April–10 May 2014, BioSCAN sample 16003GoogleMaps  ; 2 ♂♂, United States, California, Los Angeles Co., Los Angeles, Elysian Valley , 34.103°N 118.243°W, BioSCAN site 9, 29 March–5 April 2014, Malaise trap, 106.7 m, Coll. John Rodriguez, BioSCAN sample 15877GoogleMaps  ; 1 ♂, same data, but 28 December 2013 – 4 January 2014, BioSCAN sample 15498GoogleMaps  ; 10 ♂♂, 25 ♀♀, same data, but 1–8 March 2014, BioSCAN sample 15700GoogleMaps  ; 2 ♀♀, same data, but 3–10 May 2014, BioSCAN sample 16050GoogleMaps  ; 1 ♀, same data, but 28 September–5 October 2013, BioSCAN sample 15274GoogleMaps  ; 1 ♀, same data, but 2–9 November 2013, BioSCAN sample 15279GoogleMaps  ; 1 ♀, United States, California, Los Angeles Co., Los Angeles, Leimert Park , 34.014°N 118.321°W, BioSCAN site 10, 28 September–5 October 2013, Malaise trap, 38 m, Coll. LaChristian Steptoe, BioSCAN sample 15220GoogleMaps  ; 1 ♂, 13 ♀♀, United States, California, Los Angeles Co., Los Angeles, Korea Town , 34.072°N 118.291°W, BioSCAN site 11, 5–12 April 2014, Malaise trap, 85.6 m, Coll. Peter Ralph, BioSCAN sample 16056GoogleMaps  ; 2 ♀♀, same data, but 2–9 March 2014, BioSCAN sample 15796GoogleMaps  ; 2 ♂♂, 4 ♀♀, same data, but 4–13 May 2014, BioSCAN sample 16060GoogleMaps  ; 1 ♀, same data, but BioSCAN sample 16482GoogleMaps  ; 5 ♂♂, United States, California, Los Angeles Co., Los Angeles, Mid-City , 34.047°N 118.334°W, BioSCAN site 12, 29 January–5 February 2014, Malaise trap, 52.6 m, Coll. Sharon Oxborough, BioSCAN sample 15560GoogleMaps  ; 4 ♂♂, 1 ♀, same data, but 1–8 February 2014, BioSCAN sample 15600GoogleMaps  ; 4 ♀♀, same data, but BioSCAN sample 16323GoogleMaps  ; 1 ♀, same data, but BioSCAN sample 16142GoogleMaps  ; 4 ♂♂, 13 ♀♀, same data, but 1–8 March 2014, BioSCAN sample 15784GoogleMaps  ; 3 ♀♀, same data, but 3–10 May 2014, BioSCAN sample 15948GoogleMaps  ; 3 ♀♀, same data, but 1–8 November 2014, BioSCAN sample 16838GoogleMaps  ; 2 ♀♀, same data, but 14–21 September 2013, BioSCAN sample 15202 (on slide)GoogleMaps  ; 2 ♂♂, 16 ♀♀, same data, but 29 March–5 April 2014, BioSCAN sample 15943GoogleMaps  ; 3 ♂♂, United States, California, Los Angeles Co., Glendale , 34.149°N 118.218°W, BioSCAN site 13, 28 March–5 April 2014, Malaise trap, 245.4 m, Coll. Karen Hoffman, BioSCAN sample 15851GoogleMaps  ; 1 ♂, 1 ♀, same data, but BioSCAN sample 16381GoogleMaps  ; 1 ♂, 1 ♀, same data, but BioSCAN sample 16211GoogleMaps  ; 1 ♂, 4 ♀♀, same data, but BioSCAN sample 16207GoogleMaps  ; 3 ♂♂, 1 ♀, same data, but 1–8 March 2014, BioSCAN sample 15680GoogleMaps  ; 1 ♂, same data, but 3 May 2014 – 9 May 2014, BioSCAN sample 15998GoogleMaps  ; 1 ♂, same data, but 29 November–6 December 2014, BioSCAN sample 16893GoogleMaps  ; 3 ♂♂, United States, California, Los Angeles Co., Los Angeles, Gardena , 33.876°N 118.288°W, BioSCAN site 15, 29 March–5 April 2014, Malaise trap, 9 m, Coll. Betty Defibaugh, BioSCAN sample 15903GoogleMaps  ; 12 ♀♀, United States, California, Los Angeles Co., Los Angeles, Hollywood , 34.095°N 118.334°W, BioSCAN site 16, 2–9 April 2014, Malaise trap, 100 m, Coll. Tony Hein, BioSCAN sample 15980GoogleMaps  ; 1 ♀, same data, but BioSCAN sample 16345GoogleMaps  ; 1 ♂, same data, but 29 January–5 February 2014, BioSCAN sample 15611GoogleMaps  ; 5 ♀♀, same data, but 1–18 January 2014, BioSCAN sample 15608GoogleMaps  ; 7 ♀♀, same data, but BioSCAN sample 16341GoogleMaps  ; 3 ♀♀, same data, but BioSCAN sample 16137GoogleMaps  ; 13 ♀♀, same data, but 26 February–5 March 2014, BioSCAN sample 15801GoogleMaps  ; 4 ♀♀, same data, but 30 April–7 May 2014, BioSCAN sample 15984GoogleMaps  ; 12 ♀♀, same data, but 29 October–5 November 2014, BioSCAN sample 16690GoogleMaps  ; 1 ♀, same data, but BioSCAN sample 16686GoogleMaps  ; 1 ♂, 1 ♀, same data, but BioSCAN sample 16519GoogleMaps  ; 23 ♂♂, 9 ♀♀, United States, California, Los Angeles Co., Glendale , 34.159°N 118.247°W, BioSCAN site 17, 29 March–5 April 2014, Malaise trap, 190 m, Coll. Celeste Armstrong, BioSCAN sample 15911GoogleMaps  ; 5 ♀♀, United States, California, Los Angeles Co., Glendale , 34.159°N 118.247°W, BioSCAN site 17, 1–8 February 2014, Malaise trap, 190 m, Coll. Celeste Armstrong, BioSCAN sample 15670GoogleMaps  ; 1 ♀, same data, but BioSCAN sample 16200GoogleMaps  ; 2 ♀♀, same data, but BioSCAN sample 16196GoogleMaps  ; 6 ♀♀, same data, but 1–8 March 2014, BioSCAN sample 15674GoogleMaps  ; 5 ♂♂, 4 ♀♀, same data, but 3–10 May 2014, BioSCAN sample 16013GoogleMaps  ; 2 ♂♂, 10 ♀♀, United States, California, Los Angeles Co., Los Angeles, Larchmont , 34.077°N 118.32°W, BioSCAN site 18, 29 March–5 April 2014, Malaise trap, 76 m, Coll. K.T.Wiegman, BioSCAN sample 15968GoogleMaps  ; 3 ♀♀, same data, but 2 December 2014 – 6 December 2014, BioSCAN sample 16847GoogleMaps  ; 1 ♂, 10 ♀♀, same data, but 1 February 2014 – 10 February 2014, BioSCAN sample 15617GoogleMaps  ; 4 ♀♀, same data, but BioSCAN sample 16305GoogleMaps  ; 1 ♂, 1 ♀, same data, but BioSCAN sample 16127GoogleMaps  ; 3 ♂♂, 45 ♀♀, same data, but 1–8 March 2014, BioSCAN sample 15778GoogleMaps  ; 1 ♂, 3 ♀♀, same data, but 3–10 May 2014, BioSCAN sample 15973GoogleMaps  ; 1 ♂, 2 ♀♀, same data, but 2–9 November 2013, BioSCAN sample 15322GoogleMaps  ; 4 ♂♂, 7 ♀♀, same data, but 1–8 November 2014, BioSCAN sample 16843GoogleMaps  ; 3 ♂♂, same data, but BioSCAN sample 16501GoogleMaps  ; 26 ♂♂, 96 ♀♀, United States, California, Los Angeles Co., Los Angeles, Carthay , 34.059°N 118.369°W, BioSCAN site 19, 1–8 April 2014, Malaise trap, 41.1 m, Coll. Teresa Dahl, BioSCAN sample 15812 (2♀♀ on slide)GoogleMaps  ; 6 ♀♀, same data, but BioSCAN sample 16338 (3 ♀♀ on slide)GoogleMaps  ; 2 ♂♂, 11 ♀♀, same data, but 2–9 December 2014, BioSCAN sample 16876GoogleMaps  ; 1 ♂, 3 ♀♀, same data, but 28 January–4 February 2014, BioSCAN sample 15593GoogleMaps  ; 1 ♂, 3 ♀♀, same data, but BioSCAN sample 16334GoogleMaps  ; 2 ♂♂, 10 ♀♀, same data, but BioSCAN sample 16147GoogleMaps  ; 4 ♂♂, 225 ♀♀, same data, but 25 February–4 March 2014, BioSCAN sample 15807GoogleMaps  ; 3 ♂♂, 17 ♀♀, same data, but 3–10 May 2014, BioSCAN sample 15977GoogleMaps  ; 1 ♂, 7 ♀♀, same data, but 28 October–4 November 2014, BioSCAN sample 16871GoogleMaps  ; 1 ♂, 4 ♀♀, same data, but BioSCAN sample 16868GoogleMaps  ; 1 ♀, same data, but BioSCAN sample 16513GoogleMaps  ; 1 ♀, United States, California, Los Angeles Co., Burbank , 34.17°N 118.308°W, BioSCAN site 21, 1–8 March 2014, Malaise trap, 158 m, Coll. Chris Cianci, BioSCAN sample 15668GoogleMaps  ; 1 ♀, United States, California, Los Angeles Co., Los Angeles, Echo Park , 34.074°N 118.264°W, BioSCAN site 22, Malaise trap, 133.5 m, Coll. Erin Johnson, BioSCAN sample 16302GoogleMaps  ; 1 ♀, same data, but 28 January–4 February 2014, BioSCAN sample 15577GoogleMaps  ; 1 ♀, same data, but BioSCAN sample 16298GoogleMaps  ; 2 ♀♀, same data, but 25 February–4 March 2014, BioSCAN sample 15770GoogleMaps  ; 10 ♀♀, United States, California, Los Angeles Co., Los Angeles, Atwater Village , 34.114°N 118.251°W, BioSCAN site 23, 2–10 April 2014, Malaise trap, 119 m, Coll. Sidney Higgins, BioSCAN sample 15858 (1 ♀ on slide)GoogleMaps  ; 1 ♀, same data, but 2–8 January 2014, BioSCAN sample 15540GoogleMaps  ; 1 ♀, same data, but BioSCAN sample 16355GoogleMaps  ; 5 ♀♀, same data, but 26 February–5 March 2014, BioSCAN sample 15663GoogleMaps  ; 1 ♀, same data, but 30 April–7 May 2014, BioSCAN sample 16172GoogleMaps  ; 1 ♀, same data, but 29 October–7 November 2014, BioSCAN sample 16707GoogleMaps  ; 3 ♀♀, United States, California, Los Angeles Co., Los Angeles, Eagle Rock , 34.136°N 118.194°W, BioSCAN site 24, Malaise trap, 215 m, Coll. Jim Hogue, BioSCAN sample 16187GoogleMaps  ; 1 ♂, same data, but 1–8 March 2014, BioSCAN sample 15842GoogleMaps  ; 2 ♀♀, same data, but 3–10 May 2014, BioSCAN sample 16018GoogleMaps  ; 1 ♂, United States, California, Los Angeles Co., Los Angeles, Pico–Union , 34.046°N 118.275°W, BioSCAN site 25, 29 March–5 April 2014, Malaise trap, 70 m, Coll. Humberto Marquez, BioSCAN sample 15882GoogleMaps  ; 3 ♀♀, United States, California, Los Angeles Co., Los Angeles, Mid–Wilshire , 34.058°N 118.328°W, BioSCAN site 26, 1–8 February 2014, Malaise trap, 58.7 m, Coll. Patty Lombard, BioSCAN sample 15606GoogleMaps  ; 1 ♂, same data, but BioSCAN sample 16663GoogleMaps  ; 3 ♂♂, 13 ♀♀, United States, California, Los Angeles Co., Los Angeles, Eagle Rock , 34.129°N 118.215°W, BioSCAN site 28, 29 March–5 April 2014, Malaise trap, 160.7 m, Coll. Eric Keller, BioSCAN sample 15871GoogleMaps  ; 6 ♀♀, same data, but BioSCAN sample 16418GoogleMaps  ; 3 ♀♀, same data, but 1–8 February 2014, BioSCAN sample 15710GoogleMaps  ; 1 ♀, same data, but 28 December 2013 – 4 January 2014, BioSCAN sample 15480GoogleMaps  ; 1 ♂, 4 ♀♀, same data, but BioSCAN sample 16245GoogleMaps  ; 2 ♂♂, 5 ♀♀, same data, but BioSCAN sample 16241GoogleMaps  ; 3 ♂♂, 6 ♀♀, same data, but 1–8 March 2014, BioSCAN sample 15714GoogleMaps  ; 14 ♀♀, same data, but 3–10 May 2014, BioSCAN sample 16044GoogleMaps  ; 4 ♂♂, 22 ♀♀, same data, but 1–8 November 2014, BioSCAN sample 16755GoogleMaps  ; 6 ♀♀, same data, but 29 November–6 December 2014, BioSCAN sample 16962GoogleMaps  ; 3 ♂♂, 17 ♀♀, same data, but BioSCAN sample 16601GoogleMaps  ; 2 ♂♂, 18 ♀♀, same data, but BioSCAN sample 16597GoogleMaps  ; 1 ♂, 1 ♀, United States, California, Los Angeles Co., Los Angeles, Highland Park , 34.123°N 118.193°W, BioSCAN site 29, 29 March–5 April 2014, Malaise trap, 205.6 m, Coll. Natalie Brejcha, BioSCAN sample 15865GoogleMaps  ; 2 ♀♀, same data, but 21–28 December 2013, BioSCAN sample 15488GoogleMaps  ; 1 ♂, same data, but 1–8 February 2014, BioSCAN sample 15703GoogleMaps  ; 1 ♀, same data, but BioSCAN sample 16233GoogleMaps  ; 3 ♀♀, same data, but BioSCAN sample 16229GoogleMaps  ; 6 ♀♀, same data, but 1–8 March 2014, BioSCAN sample 15707GoogleMaps  ; 2 ♀♀, same data, but 3–10 May 2014, BioSCAN sample 16032 (1♀ on slide)GoogleMaps  ; 1 ♀, same data, but 25 October–8 November 2014, BioSCAN sample 16786GoogleMaps  ; 6 ♂♂, 8 ♀♀, United States, California, Los Angeles Co., Los Angeles, Highland Park , 34.125°N 118.189°W, BioSCAN site 30, 31 March–8 April 2014, Malaise trap, 227.8 m, Coll. Candace Franco, BioSCAN sample 15887GoogleMaps  ; 1 ♂, 4 ♀♀, same data, but BioSCAN sample 16423GoogleMaps  ; 25 ♂♂, 16 ♀♀, same data, but BioSCAN sample 16239GoogleMaps  ; 12 ♂♂, 30, same data, but BioSCAN sample 16235GoogleMaps  ; 10 ♂♂, 4 ♀♀, same data, but BioSCAN sample 15767GoogleMaps  ; 49 ♂♂, 23 ♀♀, same data, but 3–12 May 2014, BioSCAN sample 16038GoogleMaps  ; 13 ♂♂, 2 ♀♀, same data, but 1–8 November 2014, BioSCAN sample 16762GoogleMaps  ; 1 ♀, same data, but 29 November–6 December 2014, BioSCAN sample 16955GoogleMaps  ; 5 ♂♂, same data, but BioSCAN sample 16595GoogleMaps  ; 1 ♀, United States, California, Los Angeles Co., Los Angeles , 34.103°N – 118.216°W, BioSCAN site 31, Malaise trap, 74 m, Coll. Julian Donahue, BioSCAN sample 16206GoogleMaps  ; 1 ♀, same data, but BioSCAN sample 16202GoogleMaps  ; 1 ♀, same data, but 1–8 November 2014, BioSCAN sample 16721GoogleMaps  ; 3 ♀♀, United States, California, Los Angeles Co., Los Angeles, Pasadena , 34.163°N 118.118°W, BioSCAN site 33, 1–8 August 2016, Malaise trap, 280 m, Coll. Leslie Harris, BioSCAN sample 18235GoogleMaps  ; 1 ♂, same data, but 1–8 February 2016, BioSCAN sample 18180GoogleMaps  ; 1 ♀, same data, but 1–8 June 2016, BioSCAN sample 18325GoogleMaps  ; 15 ♀♀, same data, but BioSCAN sample 18236GoogleMaps  ; 2 ♂♂, United States, California, Los Angeles Co., Los Angeles, Rosemead , 34.05°N 118.108°W, BioSCAN site 34, 1–8 April 2016, Malaise trap, 135 m, Coll. Deniece Lascano, BioSCAN sample 18230GoogleMaps  ; 2 ♀♀, same data, but 1–8 July 2016, BioSCAN sample 18328GoogleMaps  ; 1 ♀, same data, but 8–25 March 2016, BioSCAN sample 18185GoogleMaps  ; 1 ♀, United States, California, Los Angeles Co., Monrovia. 34.158°N 117.999°W, BioSCAN site 35, 1–8 April 2016, Malaise trap, 214 m, Coll. Brian Brown, BioSCAN sample 18197GoogleMaps  ; 12 ♀♀, same data, but 4–11 August 2016, BioSCAN sample 18370GoogleMaps  ; 3 ♂♂, 7 ♀♀, same data, but 1–15 June 2016, BioSCAN sample 18277GoogleMaps  ; 4 ♀♀, same data, but 1–8 March 2016, BioSCAN sample 18155GoogleMaps  ; 3 ♂♂, 1 ♀, same data, but 1–8 May 2016, BioSCAN sample 18212GoogleMaps  ; 8 ♀♀, same data, but 1–8 October 2016, BioSCAN sample 18422GoogleMaps  ; 1 ♂, 1 ♀, same data, but 1–8 September 2016, BioSCAN sample 18375GoogleMaps  ; 1 ♂, United States, California, Los Angeles Co., San Dimas , 34.086°N 117.822°W, BioSCAN site 36, 1–8 August 2016, Malaise trap, 298 m, Coll. Carla Zorko, BioSCAN sample 18401GoogleMaps  ; 2 ♀♀, same data, but 1–8 June 2016, BioSCAN sample 18341GoogleMaps  ; 3 ♀♀, same data, but BioSCAN sample 18246GoogleMaps  ; 3 ♂♂, 16 ♀♀, United States, California, Los Angeles Co., Claremont , 34.09°N 117.711°W, BioSCAN site 37, 1–8 April 2016, Malaise trap, 341 m, Coll. Kathryn Turner, BioSCAN sample 18249GoogleMaps  ; 1 ♀, same data, but 1–8 July 2016, BioSCAN sample 18338GoogleMaps  ; 1 ♂, 3 ♀♀, same data, but 1–8 June 2016, BioSCAN sample 18337GoogleMaps  ; 7 ♂♂, same data, but 1–8 March 2016, BioSCAN sample 18164GoogleMaps  ; 2 ♀♀, United States, California, San Bernardino Co., Rancho Cucamonga , 34.139°N 117.521°W, BioSCAN site 38, 1–8 August 2016, Malaise trap, 451 m, Coll. Lucila Tagliani, BioSCAN sample 18407GoogleMaps  ; 1 ♂, United States, California, San Bernardino Co., Grand Terrace , 34.024°N 117.315°W, BioSCAN site 39, 7–14 April 2016, Malaise trap, 322 m, Coll. Dave Goodward, BioSCAN sample 18221GoogleMaps  ; 1 ♀, United States, California, Los Angeles Co., El Segundo. 33.925°N 118.425°W, BioSCAN site 40, Malaise trap, 35 m, Coll. Jack Fulmer, BioSCAN sample 18420GoogleMaps  ; 3 ♀♀, United States, California, Los Angeles Co., La Mirada , 33.914°N 118.005°W, BioSCAN site 43, 1–8 August 2016, Malaise trap, 63 m, Coll. Carmen Gendusa, BioSCAN sample 18383GoogleMaps  ; 1 ♀, same data, but 1–8 February 2016, BioSCAN sample 18146GoogleMaps  ; 1 ♂, 2 ♀♀, same data, but 1–8 March 2016, BioSCAN sample 18147GoogleMaps  ; 1 ♂, 1 ♀, same data, but 1–8 June 2016, BioSCAN sample 18321GoogleMaps  ; 1 ♂, 3 ♀♀, same data, but 1–8 April 2016, BioSCAN sample 18265GoogleMaps  ; 1 ♂, 3 ♀♀, same data, but 1–8 October 2016, BioSCAN sample 18385GoogleMaps  ; 1 ♂, 1 ♀, United States, California, Los Angeles Co., Walnut. 33.998°N 117.842°W, BioSCAN site 44, 1–8 April 2016, Malaise trap, 189 m, Coll. Emilia Park, BioSCAN sample 18251GoogleMaps  ; 1 ♀, same data, but BioSCAN sample 18416GoogleMaps  ; 5 ♂♂, 5 ♀♀, United States, California, San Bernardino Co., Chino Hills , 34.003°N 117.734°W, BioSCAN site 45, 1–8 April 2016, Malaise trap, 225 m, Coll. Joe Williams, BioSCAN sample 18253GoogleMaps  ; 1 ♀, same data, but 1–8 June 2016, BioSCAN sample 18339GoogleMaps  ; 8 ♂♂, 3 ♀♀, same data, but BioSCAN sample 18254GoogleMaps  ; 1 ♀, United States, California, Riverside Co., Norco. 33.912°N 117.57°W, BioSCAN site 46, 1–8 April 2016, Malaise trap, 180 m, Coll. Sara Taylor, BioSCAN sample 18227GoogleMaps  ; 1 ♀, same data, but 1–8 August 2016, BioSCAN sample 18392GoogleMaps  ; 12 ♀♀, same data, but 1–8 July 2016, BioSCAN sample 18336GoogleMaps  ; 12 ♀♀, same data, but BioSCAN sample 18335GoogleMaps  ; 1 ♀, same data, but BioSCAN sample 18228GoogleMaps  ; 1 ♀, same data, but BioSCAN sample 18393GoogleMaps  ; 2 ♂♂, 1 ♀, United States, California, Riverside Co., Riverside , 33.984°N 117.313°W, BioSCAN site 47, 1–8 April 2016, Malaise trap, 375 m, Coll. Justin Betz, BioSCAN sample 18223GoogleMaps  ; 2 ♀♀, same data, but 1–8 June 2016, BioSCAN sample 18279 (1 ♀, BioSCAN sample 16032, 2♂♂, 2♀♀, BioSCAN sample 15589 at MZUSP, all other specimens at LACM)GoogleMaps  .

Distribution. United States (southern California and Nevada), Mexico (Guadalajara).

Remarks. Swammerdamella marginata  is a very small scatopsid, ranging from 1.30 to 1.40 mm. The type locality of S. marginata  is Las Vegas, New Mexico. Cook (1965a) also referred to specimens of this species from additional sites in southern California (San Bernardino, Davis, Riverside, Los Angeles etc.) and Nevada (Reno). The record for Guadalajara, Mexico, may be questionable, but we did not examine the original specimens identified by Cook (1965a).

This was the most abundant species in our samples, with up to 66.1% of the total number of scatopsid specimens of the project: a total of 367 males and 1,315 females were identified in the sorted samples. The species appeared at 39 of the 47 BioSCAN collecting sites, in a total of 182 collecting events. The most abundant collecting sites for S. marginata  were 5, 18, 19, 28, and 30. As happened with Quateiella quatei  , there is a clear peak of abundance of S. marginata  in early-mid-spring, with a second peak in mid-autumn.

There is no information available on the biology of S. marginata  . In North America, there are records of adults of S. pygmaea (Loew)  associated to flowers of Staphylea floralis  ( Staphyleaceae  ) ( Cook 1956b). Staphylea  has species native to eastern North America and to California (USDA 2019), but no connection so far of this plant genus with S. marginata  has been formally proposed. In South America, there is a record of emergence of a species of a Swammerdamella  over piles of rotting grass (D.S.A., personal observation). The BOLDSystems has one single specimen of Swammerdamella  sequenced for Australia, most certainly not S. marginata  .

LACM

Natural History Museum of Los Angeles County

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Scatopsidae

Genus

Swammerdamella

Loc

Swammerdamella marginata Cook

Amorim, Dalton de Souza & Brown, Brian V. 2020
2020
Loc

Swammerdamella marginata

Cook, E. F. 1956: 24