Nematocera flies recorded in Serra do Courel, northwest Spain, May 2012 (Diptera: Anisopodidae, Blepharoceridae, Cylindrotomidae, Limoniidae, Pediciidae, Tipulidae and Trichoceridae) including descriptions of two new species of Limoniidae
Author
Hancock, E. Geoffrey
Author
Hewitt, Stephen M.
Author
Horsfield, David
Author
Lyszkowsi, Richard M.
Author
Macgowan, Iain
Author
Ricarte, Antonio
Author
Rotheray, Graham E.
Author
Watt, Kenneth
text
Zootaxa
2015
3911
2
231
244
journal article
42346
10.11646/zootaxa.3911.2.5
b0c15d7f-7b3b-44b8-9743-1c1caef29d27
1175-5326
240391
22BEC736-D607-4997-8B76-90C03149E751
Lipsothrix galiciensis
sp. nov.
Hancock & Hewitt
Description.
Male with thorax and abdomen together 7.0mm long, shining brownish-black except hypopygium yellowish brown and tergites narrowly pale distally; head dark brown, lighter brown on occiput; antenna
3.4mm
long, brown; coxae and legs dark brown except base of femora and apex of hind coxa yellowish brown. Wing length
9.2mm
(sample size = 5); membrane slightly greyish, costal cell with a faint yellowish tinge, stigma dark brown. Hypopygium with dististyles and paramere as in
Figure 8
; aedeagus as in
Figure 9
.
Female colouration not as dark as males; yellow 8th segment and ovipositor; body length 8.00mm, antenna
1.7mm
, wing 8.00mm (sample size = 2).
Holotype
: male, swept by river, nr Moreda, Lugo, Galicia,
Spain
,
26 May 2012
, circa
720m
, E.G. Hancock. Deposited in The Hunterian Zoology Museum, University of Glasgow, (Accession number
150629
).
Paratypes
: three males, swept by river, nr Moreda,
26 May 2012
; one male, by Rio Lor at Ferreria Nova,
30 May 2012
, E.G. Hancock; two females reared from larvae in waterlogged wood in stream near Alto do Couto,
28 May 2012
, circa
1300m
, E.G. Hancock, in The Hunterian Zoology Museum, University of Glasgow (Entry No. 897);
7 males
and
5 females
reared from larvae found in wet wood in a shallow stream, Devesa de Rogueira,
23 May 2012
, circa
1200m
, S.M. Hewitt, deposited in Tullie House Museum, Carlisle,
England
(CALMG: 2013.109.1 -.6).
This species is quite different from the other western Palaearctic species both in adult colouration (
Figure 10
) and the pupal thoracic spiracular gills. It shares the sexually dimorphic features of antennal length being longer in the male and the grey tinged wing membrane with
Lipsothrix nervosa
Edwards. But
the latter has yellowish pleurae and abdominal sternites and females are mainly yellow. In
L. galiciensis
the sexes differ only in the intensity of the brownish-black body. The inner dististyle has a distinctly protuberant inner margin narrowing before an expanded apex. The aedeagus bears a ventral peg-shaped protrusion as described by
Edwards (1938)
for
nervosa
but is more sinuous apically than that species.
Etymology.
The word
galiciensis
, means from Galicia, the region of
Spain
where the
type
locality of this species is found. The area of Galicia includes excellent wooded and montane habitat of considerable entomological potential for biodiversity studies.
FIGURE 1.
Inner view of left gonocoxite of
Tipula curvistylus
Eiroa
from slide mount of example from Alto do Couto, Lugo, May 2012.
FIGURE 2.
Inner view of left gonocoxite of
Tipula curvistylus
Eiroa
, figure 6 from Eiroa (1990).
FIGURE 3.
Aedeagus and ejaculatory apparatus (pump) of
Tipula curvistylus
Eiroa
from slide mount of example from Alto do Couto, Lugo, May 2012.
FIGURE 4.
Eggs of
Tipula obscuriventris
Strobl
, as removed from abdomen of a preserved example.
FIGURE 5.
Eggs of
Tipula obscuriventris
Strobl
, with showing apical (distal) coil structures.
FIGURE 6.
An egg of
Tipula obscuriventris
Strobl
, with the coil extended.
FIGURE 7.
SEM image of the egg of
T. obscuriventris
showing the plastron lines and the micropyle at the proximal end.
Discussion.
Adults were reared from larvae and pupae in sticks of less than
10cm
diameter lying loose in small streams in mixed woodland. The stream beds were stony with muddy leaf-mould and the water shallow so the sticks were only partially submerged. In addition to the adult features described above the pupal exuviae allow comparison of
L. galiciensis
with those of the other European species (
Hancock,
et al.
, 2009
). The differences in the thoracic spiracular gill are extensive in both overall shape and the detail of the plastron structure. Of particular note is the wavy margin (
Figures 11
,
12
,
13
) to the gill and the clusters of about 6–10 spines in discrete groups on the inner face (
Figure 14
).