Mycetophila strobli Lastovka , 1972

Juergenstein, Siiri, Kurina, Olavi & Poldmaa, Kadri, 2015, The Mycetophilaruficollis Meigen (Diptera, Mycetophilidae) group in Europe: elucidating species delimitation with COI and ITS 2 sequence data, ZooKeys 508, pp. 15-51 : 30-31

Taxon classification Animalia Diptera Mycetophilidae

Mycetophila strobli Lastovka, 1972 Figs 12, 27, 28, 45, 46

Material.

NORWAY. 1♂, Troms, Svensby, 69°40'01,2"N, 019°49'58,8"E, 18.vii.2008, sweeping, O. Kurina leg. (IZBE0200061, in alcohol with terminalia in glycerine, abdomen used for DNA sequence: SJ305). ESTONIA. 1♂, Tartu county, Vapramäe, 58°15'9,28"N, 26°27'46,1"E, reared from Russula delica (No 1057), coll. 8.ix.1995, emerg. 21.ix.1995, O. Kurina leg. (IZBE0200239, pinned with terminalia in Euparal); 1♂, Pärnu county, Nigula NR, 58°9'N, 24°58'E, reared from Lactarius torminosus , coll. 22.viii.1993, emerg. 2.ix.1993, O. Kurina leg. (IZBE0200240, pinned with terminalia in glycerine); 2♂♂, Tartu county, Mustametsa, Välgi, 58°36'53,09"N, 26°53'56,1"E, reared from Russula delica , coll. 1.x.2013, emerg. 14.x.2013 and 16.x.2014, S. Jürgenstein leg. (IZBE0200062, IZBE0200063, in alcohol with terminalia in glycerine, abdomen used for DNA sequence: SJ379, SJ380); 1♂, Saare county, Muhu, Igaküla, 58°36'3,5"N, 23°07'42"E, 4. x– 18.x.2008, Malaise trap, H. Jäe leg. (IZBE0200064, in alcohol with terminalia in glycerine, abdomen used for DNA sequence: SJ224); 1♂, Jõgeva county, Kaiu, 58°39'20,4"N, 26°52'43,2"E, reared from Russula nigricans , coll. 25.ix.2013, emerg. 7.x.2013, S. Jürgenstein leg. (IZBE0200065, in alcohol with terminalia in glycerine, abdomen used for DNA sequence: SJ385); 1♂, Põlva county, Palojärv, 58°2'57,3"N, 27°7'35,73"E, reared from Russula adusta , coll. 01.x.2013, emerg. 7.x.2013, S. Jürgenstein leg. (IZBE0200066, in alcohol with terminalia in glycerine, abdomen used for DNA sequence: SJ383); 1♂, Rapla county, Vardi, 59°1'27,07"N, 24°26'28,9"E, reared from Lactarius deterrimus , coll. 1.xi.2012, emerg. 5.xi.2012, S. Jürgenstein leg. (IZBE0200067, in alcohol, abdomen used for DNA sequence: SJ340). ITALY. 1♂, Südtirol, N. Park Stilfser Joch, Schmelz (SW von Prad), 46°36'42,1"N, 10°34'35,6"E, 940m, 15. viii– 24.viii.2005, Malaise trap, C. Lange and J. Ziegler leg. (IZBE0200068, in alcohol with terminalia in glycerine, abdomen used for DNA sequence: SJ57).

Male terminalia.

Posterior margin of gonocoxite ventromedially with clear angular convexity, and with abrupt and blunt projections laterally. Posterior impression with narrow base and well widened posterior part. Anterior impression with divergent arms which are sinuate at anterior fourth. Ventral branch of gonostylus with asymmetrical posterior process which bears minute warts and few setae; spine 1 short and sharply pointed; spine 2 blunt, almost twice as high and thick as spine 1; spines 3 and 4 sharply pointed, close to each other and similar in size to spine 1. Ventral branch of gonostylus with a few strong bristles deviating from other setosity laterally on ventral surface. Dorsal branch of gonostylus slightly tapering, lateral margin with shallow concavity; proximal posterior process about three times as high as distal posterior process, both separated with a shallow concavity. Distal posterior process apically and subapically with few setae; proximal posterior process bare and apically rounded. Posterior margin proximally from medial bristle with 4-6 gradually diminishing bristles; internal surface with one somewhat stronger seta next to the medial bristle. Basal angle slightly rounded, basal margin bare. Ejaculatory apodeme with semi-oval base and wide rim. Aedeagus slightly widened apically and with apical margin convex. Aedeagal guides with wide lateral impressions; subapically constricted and apically rounded, not extending upper margin of aedeagus. Aedeagal apodemes laterally angular.

Intraspecific variation.

Occasionally the spine 2 on the ventral branch of the gonostylus is somewhat slender and pointed.

Hosts and distribution.

Mycetophila strobli has been reared from species of Russula , Lactarius , Suillus , Collybia , Armillaria , Kuehneromyces and Cortinarius ( Yakovlev 1994, original data). The species is widely distributed in Europe extending to the Middle East ( Chandler 2013). The material from Norway represents a new country record.