Mycophagous gall midges (Diptera, Cecidomyiidae: Lestremiinae, Micromyinae, Winnertziinae, Porricondylinae): first records in Sweden and descriptions of closely related new species from elsewhere Jaschhof, Mathias Jaschhof, Catrin Zootaxa 2017 4226 4 546 570 682QP Mamaev, 1998 Mamaev 1998 [151,583,221,247] Insecta Cecidomyiidae Aprionus Animalia Diptera 2 548 Arthropoda species aberrantis  Mamaev (1998) described  Aprionus aberrantisfrom a single male collected in southwest Russiain 1967. His description lacks illustrations, making the species difficult to identify, except that the antennae were mentioned to have 17 flagellomeres, not 12 as is typical in  Aprionusand other Micromyinae. MJ, who studied the holotypeof  A. aberrantisin 2006, realized that three specimens in the Jaschhof collection belong to this species: a male collected not far from the typelocality and two males collected in Germany, all too poorly preserved for description. Here we report on the occurrence of  A. aberrantisin southern Sweden, the northernmost distribution of this species. Based on the Swedish specimens, Mamaev’s (1998) male description is supplemented here, as follows. The postfrons is setose; 6̄7 postocular bristles form a single sparse row; flagellomeres ( Fig. 1B), which number 15 to 17, have necks and nodes of equal length, sensory hairs arranged in 1 complete and 2̄3 incomplete whorls, with the crenulation somewhat degenerated, and both simple and two-branched hair-shaped translucent sensilla; the palpus may consist of 3 or 4 segments; R1 is up to 3 times longer than Rs; claws are bent at right angles, with 2 fine teeth at the bend; empodia are vestigial; the ninth tergite has a weak, deeply concave anterior margin; the short gonocoxae have a wide ventral emargination and a wide, broadly rounded dorsal bridge; the elongate gonostylus is slightly flattened, tapered towards the apex, and equipped with an inconspicuous tooth of fingernail-shape; the tegmen, which is membranous rather than sclerotized (and thus easily distorted in slide-mounts), bears 8̄9 pairs of short finger-like processes, the latter tending to point towards the head end; the subanal plate is membranous (its outline thus variable), with a pale, irregular scale-pattern; and the cerci are covered with conspicuously large microtrichia (see Fig. 1Afor genitalic characters). The number of flagellomeres in combination with the tegmen structure make  A. aberrantisunmistakable. This unusual  Aprionusis tentatively classified here in the  Aprionus spiniger( Kieffer, 1894)group (see Jaschhof 1998, Jaschhof & Jaschhof 2009).  Previous distribution.Russia (Near East). Occurrence in Sweden:Skåne, Öland.   Specimens studied. SWEDEN: male (CEC156), Skåne, Simrishamn, Stenshuvud NP, alder swamp forest,  26 Maȳ  28 June 2010, Malaise trap, M. & C. Jaschhof; male (CEC157), Öland, Mörbylånga, Gamla Skogsby, mixed deciduous forest,   8 Aug. 2014, aspirator, M. Jaschhof; 5 males(CEC210–213, 261), same locality, 13 May–14 July 2015, Malaise trap, M. & C. Jaschhof; male (CEC158), Mörbylånga, Västerstad elmforest NR, mature elm forest,   10 Julȳ  5 Aug. 2014, Malaise trap, SMTP(trap 3002, collecting event 3055); male (CEC214), Mörbylånga, Stora Dalby forestNR, mixed deciduous forest with much dead ash,   9 July–8 Aug. 2015, Malaise trap, M. & C. Jaschhof. Newto GERMANY: male (A7630), Mecklenburg-Vorpommern, Rügen, Lohme, old-growth mixed forest of beech, pine and larch,   4 Sep. 1994, sweepnet, M. Jaschhof; male (A7631), Mecklenburg-Vorpommern, Gützkow, swamp forest of alder and ash,   27 May 1995aspirator, M. Jaschhof(both in SDEI). RUSSIA: male (A7629), Caucasus Mountains, Gornaya Legenda NGuzeripl’, Belaya valley, mixed forest, 26 July and 4 Aug. 1994, sweepnet, W. Mohrig (in SDEI). 1426520869 1926-05 2010-06-28 1926-05 Stenshuvud NP & M. & C. Jaschhof & Oland & Morbylanga & Gamla Skogsby Sweden Skane 3 549 1 Skane 1426520885 [348,1244,548,573] 2014-08-08 2010-06-28 1926-05 M. Jaschhof Sweden Skane 3 549 5 5 Skane 1426520890 2010-07 2014-08-05 2010-07 SMTP Sweden Stora Dalby forest Morbylanga 3 549 1 Skane 1426520870 2015-07-09 2015-08-08 2015-07-09 M. & C. Jaschhof. New & Rugen & Lohme Germany Mecklenburg-Vorpommern 3 549 1 Mecklenburg-Vorpommern 1426520889 1994-09-04 M. Jaschhof & Gutzkow Germany Mecklenburg-Vorpommern 3 549 1 Mecklenburg-Vorpommern 1426520882 1995-05-27 SDEI M. Jaschhof & Gornaya Legenda N Russia Belaya valley Caucasus Mountains 3 549 1