General distribution (WSC):
North America, Europe, Turkey, Caucasus, Russia (Europe to Far East), Kazakhstan, Iran, Central Asia, China, India
Faunistic references:
Theridium impressum
Drensky 1936, p. 70
Theridium cornutum
Drensky 1936, p. 69
Theridion impressum
Deltshev 1980, p. 90
Theridion impressum
Tzonev & Lazarov 2001, p. 71
Theridion impressum
Lazarov et al. 2001, p. 12
Theridion impressum
Deltshev et al. 2004, p. 186
Theridion impressum
Deltshev et al. 2011, p. 81
Localities:
Bulgaria:
Ruen Peak, Osogovo -
Tzonev & Lazarov 2001
;
Iglika Hut, Osogovo Mts. -
Tzonev & Lazarov 2001
;
Skoparnik Peak, Vitosha Mts. -
1 ♂, 12.07.1978, Deltshev
1980
;
Kupena Peak, Vitosha Mts. -
2 ♀, 21.07.1976, Deltshev
1980
;
Cherni Vrah, Vitosha Mt. -
3 ♂, 17.07.1976, Deltshev
1980
;
Trigrad -
1 ♂, 5 ♀, Deltshev et al.
2011
;
Lednitsata Hut, Western Rhodopes Mts. -
1 ♂, 2 ♀, Deltshev et al.
2011
;
Chepelare -
1 ♂, 2 ♀, Deltshev et al.
2011
;
Zlatograd -
1 ♀, 4 juv., 16.04.1977, Deltshev et al.
2004
;
Uzundzhovo, Haskovo Province -
1 ♂, 1 ♀, 12.06.1988, Deltshev et al.
2004
;
Koprivshtitsa -
6 ♀, Lazarov et al.
2001
;
Bunaya Peak, Sredna Gora Mt. -
1 ♂, 3 ♀, Lazarov et al.
2001
;
Chivira Hut, Sredna Gora Mts. -
19 ♀, Lazarov et al.
2001
;
Barikadite Place, Sredna Gora Mts. -
1 ♀, Lazarov et al.
2001
;
Fetentsi, Pazardzhik Region -
3 ♂, 10 ♀, Lazarov et al.
2001
;
Rila Monastery -
Drensky
1936
;
Rila town -
Drensky
1936
;
Borovets -
Drensky
1936
;
Drensky
1936
(As Theridium cornutum);
Banderitsa -
Drensky
1936
;
Samokov -
Drensky
1936
(As Theridium cornutum);
Razlog -
Drensky
1936
(As Theridium cornutum);
Bansko -
Drensky
1936
(As Theridium cornutum);
Pirin (no locality specified) -
Drensky
1936
(As Theridium cornutum);
Burgas -
Drensky
1936
(As Theridium cornutum);
Omurtag -
Drensky
1936
(As Theridium cornutum);
Kotel -
Drensky
1936
(As Theridium cornutum);
Sofia -
Drensky
1936
(As Theridium cornutum);