New Black Fungus Gnats (Diptera, Sciaridae) of North America Part I. Genus Scatopsciara Edwards, 1927
Author
Mohrig, Werner
Author
Kauschke, Ellen
text
Zootaxa
2016
4150
4
401
435
journal article
10.11646/zootaxa.4150.4.3
e78916b4-b9a2-4b98-a689-b41f83ccf09b
1175-5326
267128
DB975877-03DF-4067-AE12-D978BB3E0801
Scatopsciara
(
Scatopsciara
)
subdendrotica
sp. n.
(
Fig. 2
C)
Locus
typicus
:
Canada
,
Alberta
,
Munn Creek
,
53.30°N
,
118.10°W
, spruce forest.
Holotype
:
Male
,
23.vii.– 15.ix.1994
, leg.
E. Fuller
,
Malaise trap
(
PWMP
)
.
Paratype
:
1 male
, same data (
PWMP
)
.
FIGURE 4
.
A
.
Scatopsciara
(
Sc.
)
geophila
Tuomikoski.
Specimen from Canada. Hypopygium, ventral view.
B
.
Scatopsciara
(
Sc.
)
neglecta
Menzel & Mohrig.
Specimen from Canada. Hypopygium, ventral view.
FIGURE 5
.
A–C
.
Scatopsciara
(
Sc.
)
dendrotica
Steffan.
A
. Hypopygium
, ventral view.
B
. 4th flagellomere.
C
. Apex of fore tibia.
D–F
.
Scatopsciara
(
Sc.
)
subciliata
Tuomikoski.
Specimen from Canada.
D
. Gonostylus, ventral view.
E
. Part of hypopygium, ventral view.
F
. Wing and haltere.
Description
. Male.
Head
. Eye bridge 2–3 facets wide. 4th flagellomere with l/w-index 2.4, haired pale and sparsely, longer than wide. Necks rather long. Palpus 3-segmented, short; basal segment without deepened sensory area, with 2–3 bristles.
Thorax
. Brown. Scutum haired pale. Wings pale; R1: R = 0.8; c 2/3 w; y = x, bare; posterior veins bare. Haltere short, brownish. Legs brownish; tibial organ of fore tibia small, comb-like; middle and hind tibiae with one long spur, a second is strong reduced or absent; claws toothless.
Abdomen
. Brown, haired pale. Hypopygium brown, ventral base nearly closed, haired sparsely; gonocoxites longer than gonostylus, inner ventral margin haired sparsely. Gonostylus flat on inner side, with strong apical tooth and 6–7 spines somewhat shorter than tooth, located from apex to the middle of inner side. Tegmen rather high, with fine teeth. Body size:
2.8 mm
.
Comments
. The species is similar to
Sc. dentrotica
Steffan. It
differs in the shape of the gonostylus (flattened inner side), the longer subapical spines and in shape of the tegmen. It is similar to
Sc. neglecta
Menzel & Mohrig
as well. It differs by stronger subapical spines, arranged in an irregular row in the middle of inner side (in
Sc. neglecta
in a straight row), and in a higher tegmen. It belongs to the
Sc. atomaria
group.
Distribution
.
Canada
(
Alberta
).