Brevicornu griseolum ( Zetterstedt, 1852 )

Kjaerandsen, Jostein, 2005, A review of fungus gnats in the tribe Exechiini (Diptera, Mycetophilidae) from the J. W. Zetterstedt collection at the Museum of Zoology in Lund, Sweden, Zootaxa 856, pp. 1-35 : 19

Brevicornu griseolum ( Zetterstedt, 1852) sensu auct.

Mycetophila griseola Zetterstedt, 1852: 4225

Brachycampta borealis Lundström, 1914: 17 , figs 14 & 15 syn. n.

Mycetophila griseola ; Edwards 1924: 164

nec Allodia griseola ; Edwards 1924: 168

nec Allodia griseola ; Edwards 1925: 608

nec Allodia karpathica Landrock, 1928: 240

nec Brevicornu griseolum ; Zaitzev 1986: 171, fig. 53(1)

nec Brevicornu griseolum ; Zaitzev 2003: 132, figs 16(7–8)

Material. Lectotype ( Fig. 5 A–D) male [SPM­005160, mounted on slide] plus para­

lectotype female ( Fig. 5 E) [SPM­005161, mounted on slide] on same pin [with light

green tag, labelled: M. griseola Zett. ď Ψ. 16 Jul. Skalstug] – Sweden: JÄ, Skalstugan,

16. July 1840. Paralectotype male [SPM­005254] plus paralectotype female [SPM­

005255] on same pin [with light green tag, labelled: Sp. XXX. ďΨ. Skalstugan, and on

a second label: Skalst. 16 jul.] – Sweden: JÄ, Skalstugan, 16. July 1840.

Additional material studied. Syntype of B. borealis [MZHF­1032, pinned, with

cleared abdomen in glycerine vial], original labels: printed label “Ponoj”; printed label

“R. Frey”; small quadratic pink label with number “5009”; handwritten label in blue

ink “10.2”; pale green label “Mus. Zool. H:fors Spec. typ. No 4317. Brachycampta

borealis Lun. ” [Mus. Zool Helsinki Loan Nr. D04­1268] – Finland: Lp, Pinoj,

Gavrilovo, 15. – 16. July 1913, leg. R. Frey.

As noted by Zetterstedt (1852, 4225) the male and female of the couples were taken in copula, and thus the females should be safely associated with the male. Edwards (1924) misinterpreted this species as Allodia griseicollis (Meig.) sensu Lundström (1909) nec Staeger (1840), and suggested to use Zetterstedt's name for it. While the intention presumably was to avoid mixing with B. griseicolle (Staeger, 1940) this rather led to a mixing of B. griseolum with B. canescens where the first name has later been widely used for the latter species. Further, this species is a senior synonym of Brevicornu boreale (Lundström, 1914) [type specimen has been studied, compared with the lectotype of B. griseolum and found to be conspecific].

Figures

FIGURE 5. Male lectotype and female paralectotype of Brevicornu griseolum (Zetterstedt, 1852) sensu auct. – A. Terminalia in ventral view. – B. Tergite IX and cerci in dorsal view. – C. Internal face of right gonostylus. – D. Aedeagus in ventral view. – E. Female terminalia in lateral view. Bars = 0.2 mm.