Katatopygia sahlbergi ( Lundstroem , 1906) Lundstroem, 1906

Martinsson, Svante & Kjaerandsen, Jostein, 2012, Katatopygia gen. n., a monophyletic branch segregated from Boletina (Diptera, Mycetophilidae), ZooKeys 175, pp. 37-67 : 49-52

Katatopygia sahlbergi ( Lundstroem, 1906) comb. n. Figs 3 E–F4A–E5A7E–F12A–F

Boletina sahlbergi Lundström 1906: 14, fig 8

Boletina punctus Garrett 1925: 5 syn. n.

Boletina altaica Zaitzev 1994: 203

Boletina sahlbergi Lundström 1912:20, figs 22-24

Boletina sahlbergi Zaitzev & Polevoi 2002:642, fig. 11

Diagnostic characters.

Most similar to Katatopygia laticauda from which it can be distinguished by having wing vein Sc2 present and M-pet longer than ta, and in coloration with distinct and separated mesonotal stripes and paler coxae where at most hind coxa are darkened.

Re-description.

Male. Body length 4.5-6.5 mm; wing length 4.5-6.0 mm.

Head blackish brown; mouthparts and palps yellow. Antenna with scape, pedicel, and basal part of first, in some specimens the whole first and basal part of second, flagellomere pale yellow, rest of flagellum brown.

Thorax in most specimens with 3 distinct, black mesonotal stripes on yellow ground, humeral area yellow, a few specimens with mesonotal stripes indistinct and humeral area brownish; antepronotum pale; anepisternum brown; preepisternum pale with ventral half darker, brown; laterotergite brown with anterior part paler; mediotergite pale with a broad dark central stripe. Halter pale.

Wing pale with veins yellowish brown; stem of M approximately 1.5 times the length of ta; Sc2 present; Sc ending in C slightly before Rs; C ending at apex of R5.

Legs pale yellow with joints darker.

Abdomen dark brown, usually with yellow apical bands on tergite I–IV.

Terminalia often yellow with dark lateral markings, in some specimens brownish and not distinctly paler than rest of abdomen. Gonocoxite with mesal corners slightly projected. Tergite IX subrectangular, with a sclerotized mesal suture. Paramere simple, strong, blunt and covered with microtrichia. Gonostylus straight with apical processus approximately half as long as the diameter of gonostylus.

Female. Body length 6.0-6.5 mm; wing length 6.0-6.5 mm.

Coloration as male.

Terminalia. Tergite IX short with rounded apicolateral corner; sternite VIII and gonocoxite VIII long and narrow, bearing about 6 strong apical setae; gonapophysis IX long and projected into a pointed apex.

Distribution.

Holarctic. Possibly boreal-alpine with records from Scandinavia, northern parts of European Russia, The Alps, West Siberia (Zaitzev & Polevoi 2002), Japan ( Saigusa 1968) and Canada ( Garrett 1925).

Remarks.

The proposed synonymy of Katatopygia sahlbergi and Boletina punctus is based on the study of type material of Boletina punctus and Nordic material of Katatopygia sahlbergi . Katatopygia sahlbergi has been confused with Katatopygia erythropyga and there are some records of the latter species that at least partly refer to Katatopygia sahlbergi (Zaitzev & Polevoi 2002).

Material examined.

NORWAY: FV, Alta, Detsika, Buolamalia, 6 Aug-25 Sep 1996 (ZMUN, leg. L. O. Hansen & H. Rinden) - 2 males; STI, Oppdal, Kongsvoll, 19-26 Jul 1995 (MZLU, leg. J. Skartveit) - 1 male; Kongsvoll, Sprænbekken, 16 Aug-19 Sep 1994 (MZLU, leg. J. Skartveit) - 1 male; SWEDEN: LU, Jokkmokk, Kaltisbäcken 1 km NNE Messaure, 21 Jun-12 Jul 2004 (MZLU, leg. J. Kjærandsen & K. Hedmark) - 1 female, 10 males; 12 Jul-17 Aug 2004 (MZLU, leg. J. Kjærandsen & K. Hedmark) - 3 males; above parking lot, 12 Oct 1997 (MZLU, leg. S. Lundberg) - 1 male; Messaure, 2 Sep-4 Oct 1971 (MZLU, leg. K. Möller) - 14 males; Porsitjärn /Porsi VVO, 1.5 km SE Vuollerim, 6 May-13 Aug 2004 (MZLU, leg. M. Karström) - 2 females, 2 males; 15 Jun-1 Jul 2005 (MZLU, leg. K. Hedmark & M. Karström) - 2 males; 1-16 Jul 2005 (MZLU, leg. K. Hedmark & M. Karström) - 1 male; Tapmokbäckravinen, 12 km SSE Vuollerim, 16 Jun 2004 (MZLU, leg. J. Kjærandsen) - 1 male; Bombmurkleskogen VVO, 4 km SSE Messaure, 17 Jun 2004 (MZLU, leg. J. Kjærandsen) - 1 male; 21 Jun 2004 (MZLU, leg. J. Kjærandsen) - 1 male; 7-19 Jul 2005 (NHRS, leg. Swedish Malaise Trap Project) - 2 males; Luottåive NR, 28 km S Jokkmokk, 14 Jul-18 Aug 2004 (MZLU, leg. K. Hedmark & J. Kjærandsen) - 2 males; 18 Aug-20 Sep 2004 (MZLU, leg. K. Hedmark & J. Kjærandsen) - 4 females, 2 males; Gällivare, Haapavaara/Annavaara, 8 km WNW Vettasjärvi, 1 Jun-26 Jul 1994 (NHRS, leg. R. Rova) - 1 male; Jokkmokk, Bombmurkleskogen VVO, 9-25 Sep 2005 (NHRS, leg. Swedish Malaise Trap Project) - 1 male; 25 Sep-13 Oct 2005 (NHRS, leg. Swedish Malaise Trap Project) - 1 female, 3 males; TO, Kiruna, Abisko, 14-20 Jul 1975 (MZLU, leg. K. Möller) - 4 males; GF-02, 150-500 m W Naturv. stn., 10-25 Jul 1975 (MZLU, leg. K. Möller) - 1 male; LF-01, 150-500 m W Naturv. stn., 6-20 Jun 1975 (MZLU, leg. K. Möller) - 2 males; 22-29 Sep 1975 (MZLU, leg. K. Möller) - 1 male; 29 Sep-6 Oct 1975 (MZLU, leg. K. Möller) - 1 male; LF-02, 150-500 m W Naturv. stn., 21-28 Jul 1975 (MZLU, leg. K. Möller) - 1 male; 28 Jul-4 Aug 1975 (MZLU, leg. K. Möller) - 2 males; 29 Sep-6 Oct 1975 (MZLU, leg. K. Möller) - 1 male; LF-03, 150-500 m W Naturv. stn., 25 Sep-6 Oct 1975 (MZLU, leg. K. Möller) - 13 males; 6-20 Oct 1975 (MZLU, leg. K. Möller) - 2 males; 20-27 Oct 1975 (MZLU, leg. K. Möller) - 1 male; LF-04, 150-500 m W Naturv. stn., 22-29 Sep 1975 (MZLU, leg. K. Möller) - 1 female, 2 males; LF-05, 150-500 m W Naturv. stn., 6-20 Oct 1975 (MZLU, leg. K. Möller) - 1 female, 11 males; 20-27 Oct 1975 (MZLU, leg. K. Möller) - 1 male; LF-06, 150-500 m W Naturv. stn., 4-11 Aug 1975 (MZLU, leg. K. Möller) - 1 male; 1-8 Sep 1975 (MZLU, leg. K. Möller) - 1 male; 15-22 Sep 1975 (MZLU, leg. K. Möller) - 3 males; 22-29 Sep 1975 (MZLU, leg. K. Möller) - 2 females, 11 males; 29 Sep-6 Oct 1975 (MZLU, leg. K. Möller) - 24 males; LF-07, 150-500 m W Naturv. stn., 8-15 Sep 1975 (MZLU, leg. K. Möller) - 1 male; 29 Sep-6 Oct 1975 (MZLU, leg. K. Möller) - 14 males; 6-20 Oct 1975 (MZLU, leg. K. Möller) - 2 males; LF-08, 150-500 m W Naturv. stn., 1-8 Sep 1975 (MZLU, leg. K. Möller) - 1 male; LF-09, 150-500 m W Naturv. stn., 21-28 Jul 1975 (MZLU, leg. K. Möller) - 1 male; 8-15 Sep 1975 (MZLU, leg. K. Möller) - 1 male; 22-29 Sep 1975 (MZLU, leg. K. Möller) - 4 males; 29 Sep-6 Oct 1975 (MZLU, leg. K. Möller) - 14 males; 6-20 Oct 1975 (MZLU, leg. K. Möller) - 1 female, 10 males; LF-10, 150-500 m W Naturv. stn., 22-29 Sep 1975 (MZLU, leg. K. Möller) - 2 males; LSF, 15 Aug-1 Sep 1975 (MZLU, leg. K. Möller) - 1 male; 1-15 Sep 1975 (MZLU, leg. K. Möller) - 2 males; Abisko, Stordalen NR, 9-24 Jul 1975 (MZLU, leg. K. Möller) - 5 males; 7-14 Aug 1975 (MZLU, leg. K. Möller) - 3 males; 4-11 Sep 1975 (MZLU, leg. K. Möller) - 2 males; above tree limit 26 Jun.-15 Jul. 2006 (NHRS, leg. Swedish Malaise Trap Project) - 4 males.

Type material of

Boletina punctus

examined.

Holotype male. Canada: BC, Creston 4 Jul (year unknown pre 1926), leg B. C. D. Garrett (CNC, pinned with terminalia mounted on separate slide, JKJ-SPM-057764). Paratypes. Same data as holotype, marked as allotype - 1 female (CNC,pinned, JKJ- SPM-057778), same data as holotype - 3 females (CNC, pinned, 1 with abdomen in glycerine in microtube on same pin, JKJ- SPM-057779-81), 13 males (CNC, pinned, 2 with terminalia mounted on separate slide, JKJ-SPM-057765-77).

Key to the males of Katatopygia

The key is partly based on the key from Zaitzev and Polevoi (2002).