New Dicerurini from Europe, mostly Sweden (Diptera: Cecidomyiidae, Porricondylinae)
Author
Jaschhof, Mathias
Author
Jaschhof, Catrin
text
Zootaxa
2019
2019-02-20
4559
2
245
264
journal article
27451
10.11646/zootaxa.4559.2.2
2845efb7-0c6c-4842-a407-a995f2e77002
1175-5326
2626958
175EB654-85D7-4472-BF78-9C62BCBCA228
Tetraneuromyia bulbifera
Mamaev, 1964
Figs 22–24
Adults of this species have previously been found on a very few occasions in the European part of
Russia
and in
Moldova
(
Spungis 1987
). In
2016 and 2017
, but never before and thereafter, we collected several males of this species in
Sweden
, the first findings in all of northern Europe. Our material, identified as
T. bulbifera
on the basis of
Spungis’s (1987)
description, is used here to redescribe the genitalic structures in greater detail, including slight variations found in the gonostyli and tegmina of some of our specimens. The female of
T. bulbifera
was described by
Spungis (1987)
; larvae remain unknown.
Diagnosis.
Tetraneuromyia bulbifera
differs from the other species of this genus in that the gonostylus is slightly swollen distally, thus the specific name,
bulbifera
(
Fig. 24
, ↓
4
). The gonostylar apex bears a small tooth, which in normal-sized specimens consists of several closely spaced spines, while forming a rather solid structure in large, robust specimens. The tegmen fits the construction as generally found in
Tetraneuromyia
(see above), while species-specific characters are as follows: the dorsal, spike-shaped processes are directed posteriorly (
Fig. 23
, ↓
5
); the ventral processes, which are much broader, have rounded extensions basally and pointed apices, and their bases are touching each other to form a widely open V-shape (
Fig. 23
, ↓
6
). Each of the ventral processes has a sharp point dorsosubapically, which is quite obvious in large specimens (
Fig. 22
, ↓
7
) but much smaller and easy to miss in smaller specimens (
Fig. 23
).
Material examined.
Sweden
:
7 males
,
Lule Lappmark
,
Jokkmokk
,
Kaltisbäcken NR
, herb-rich old-growth taiga near stream, various dates between
4 July and 28 August 2016
,
MT
and aspirator,
MCJ
(spms nos
CEC1433
–
CEC
1435
in
NHRS
,
CEC1436
–
CEC
1439
in
SDEI
)
;
1 male
,
Jokkmokk
,
Messaure
, swampy herb-rich taiga,
31 July–28 Aug. 2016
,
MT
,
MCJ
(spm. no.
CEC
1441
in
NHRS
)
;
2 males
,
Jokkmokk
, road 97
6 km
SE Vuollerim
,
Lagnäsån
, old-growth herb-rich taiga,
30 July–31 Aug. 2016
,
MT
,
MCJ
(spms nos
CEC1442
–
CEC
1443
in
NHRS
)
;
2 males
,
Jokkmokk
,
Bombmurkleskogen S Messaure
, swampy herb-rich taiga,
24–25 August 2016
, aspirator,
MCJ
(spms nos
CEC1444
–
CEC
1455
in
SDEI
)
;
1 male
,
Jokkmokk
,
Vuollerim
,
Älvvägen
,
Lövgården
, backyard,
1–23 September 2017
,
MT
, M. Karström & MCJ
(spm. no.
CEC
1440
in
NHRS
)
.