Limnobaris pusio, (Boheman, 1844)

Tamutis, Vytautas, Balalaikins, Maksims, Alekseev, Vitalii, Pūtys, Žilvinas & Telnov, Dmitry, 2024, An annotated checklist of supertribe Bariditae Schoenherr, 1836 (Coleoptera, Curculionidae, Conoderinae) in southeastern Baltic region, Ecologica Montenegrina 71, pp. 144-164 : 150-151

= L. pusio (Boheman, 1844)

Material examined. LATVIA – Augšdaugava • Bebrene , 56°4'5"N, 026°7'55"E; alt. 125 m; 01.VII.2006 , leg. E. R.; 1 spec.; DUBC • Butiški , 55°53'59"N, 026°45'15"E; alt. 127 m; 23. V.2006; leg. A.N.; 2 spec.; DUBC • Butiški, valley of River Daugava , 55°54'13"N, 026°44'43"E; alt. 100 m; 26. V.2008; leg. A.Bu.; 2 spec.; DUBC • ibid; 01.VII.2009 ; leg. M.B.; 1 spec.; DUBC • Daugavpils, 55°53'11"N, 026°29'41"E; alt. 93 m; 09. V.1998; leg. A.Ba.; meadow; 1 spec.; DUBC • Nature reserve “Ilgas”, 55°41'27"N, 026°47'3"E; alt. 153m; 10. VI.1992; leg. A.Ba.; 1 spec.; DUBC • ibid; 09. V.1993; leg. A.Ba.; 3 spec.; DUBC • ibid; 15. V.1993; leg. A.Ba.; 3 spec.; DUBC • ibid; 15. VI.1994; leg. A.Ba.; 2 spec.; DUBC • ibid; 18. VI.1997; leg. A.Ba.; 4 spec.; DUBC • ibid; 07.VII.1997; leg. A.Ba. ; 5 spec.; DUBC • Vabole , 56°1'40"N, 026°27'40"E; alt. 94 m; 15. VI.1997; leg. R.C.; 1 spec.; DUBC • Višķi , 56°4'8"N, 026°45'26"E; alt. 102 m; 18.VII.1990; leg. A.Ba. ; 2 spec.; DUBC • Lake Višku , 56°2'43"N, 026°48'4"E; alt. 102 m; 05. VI.2006; leg. A.N.; 2 spec.; NPC – Dienvidkurzeme • Pape , 56°14'1"N, 021°3'17"E; alt. 3 m; 31. V.2016; leg. Ch.F.; 1 spec.; FPC – Krāslava • Kombuļi , 55°58'31"N, 027°10'18"E; alt. 177 m; 04. VI.2006; leg. A.N.; 1 spec.; NPC • Sloboda , 55°51'2"N, 027°19'10"E; alt. 111 m; 24. V.2006; leg. A.N.; 2 spec.; NPC • Šķeltova , 56°1'36"N, 027°0'44"E; alt. 153 m; 27.VII.1989; leg. A.Ba. ; 2 spec.; DUBC • ibid; 31. V.1990, leg. A.Ba.; 3 spec.; DUBC • ibid; 09. V.1993; leg. A.Ba.; 3 spec.; DUBC – Preili • Pelēči , 56°9'35"N, 026°43'26"E; alt. 108 m; 03. VI.2016; leg. Ch.F.; 1 spec.; FPC – Rēzekne • Uļjanova , 56°24'36"N, 027°18'5"E; alt. 177 m; 31. V.2016; leg. Ch.F.; 3 spec.; FPC – Rīga • Ķemeri National park, Lake Melnezers , 56°58'6"N, 023°31'50"E; alt. 2 m; 27. V.2020; leg. A.N.; 1 spec.; NPC – Talsi • Slītere National park, Pitrags , 57°41'56"N, 022°24'37"E; alt. 9 m; 24. V.2016; leg. Ch.F.; 1 spec.; FPC– Tukums • Ķemeri National park, Antiņciems , 56°57'34"N, 023°26'41"E; alt. 6 m; 26. VI.2006; leg. A.P.; 1 spec.; DUBC • Lake Engures nature park, 57°12'51"N, 023°8'52"E; alt. 2 m; 27. V.2020; leg. A.N.; 1 spec.; NPC • Lake Engures nature park, 57°15'54"N, 023°7'58"E; alt. 2 m; 20. VI.2004; leg. A.K.; 1 spec.; IBULC . LITHUANIA – Anykščiai • Rubikiai , 55°31'38"N, 025°16'47"E; alt. 129 m; 08.VII.2000 ; leg. S.K.; 1 spec.; KZM, IC-19071 • Traupis , 55°30'59"N, 024°44'34"E; alt. 78 m; 25. V.2020; obs. S.O.; 1 spec. • bank of lake Suosa , 55°43'35"N, 024°59'23"E; alt. 103 m; 18. V.1991; obs. R. Pa.; 1 spec. – Kaunas • Freda , 54°52'16"N, 023°54'41"E; alt. 70 m; 25. VI.1982; leg. R.F.; 1 spec.; KZM, IC-28314 • Dubravos miškas, 54°50'44"N, 024°4'4"E; alt. 52 m; 21.VII.2000 ; leg. R.F.; 1 spec.; KZM, IC-28318 • durpynas Novaraistis , 54°56'53"N, 023°24'9"E; alt. 68 m; 05. VI.2000; leg. R.F.; 1 spec.; KZM, IC-28317 • Noreikiškės , 54°53'1"N, 023°49'19"E; alt. 78 m; 20. V.1993; leg. V. T.; 1 spec.; KZM, IC-71504 • Šiuliai , 54°53'33"N, 023°31'12"E; alt. 65 m; 23. V.2023; leg. V. T.; 1 spec.; KZM, IC-71718 – Kėdainiai • Saviečiai , 55°10'21", 024°0'28"; alt. 49 m; 29. VI.2006; obs. P.I.; 1 spec.; NRC, E000037 – Klaipėda • Melnragė , 55°44'16"N, 021°5'10"E; alt. 1 m; 09. V.1990; leg. S.K.; 1 spec.; KZM, IC-18803 – Palanga • Kunigiškiai , 55°57'27"N, 021°5'31"E; alt. 11 m; 14. VI.2001; leg. R.F.; 1 spec.; KZM, IC-28313 – Rokiškis • Rokiškis , 55°57'42"N, 025°35'57"E; alt. 133 m; 11.VII.1982 ; leg. G.S.; 1 spec.; KZM – Šakiai • miškas Juškinė , 55°1'17"N, 023°26'28"E; alt. 67 m; 07.X.2000 ; leg. R.F.; 1 spec.; KZM, IC-28319 – Švenčionys • Pašliaužas , 55°1'45"N, 025°40'13"E; alt. 144 m; 10. VI.2007; obs. P.I.; 1 spec.; NRC, E000038 – Ukmergė • Zujai , 55°16'56"N, 024°51'7"E; alt. 53 m; 16. V.1984; leg. G.Š. and R.D.; 2 spec.; KZM, IC-28315, IC-28316 – Trakai • Aukštadvaris , 54°34'40"N, 24°32'30"E; alt. 150 m; 28. VI.1987; leg. G.S.; 1 spec. KZM – Utena • Saldutiškis , 55°21'3"N, 025°49'17"E; alt. 162 m; 01.VII.1987 ; obs. G.S.; 1 spec.; KZM – Varėna • Lynežeris , 54°3'47"N, 024°34'20"E; alt. 128 m; 10.VII.1990 ; obs. G.S.; 1 spec. • ibid, 06.VII.1991 ; obs. G.S.; 1 spec. • Merkinė , 54°10'13"N, 024°11'13"E; alt. 88 m; 20.VII.2015 ; leg. R.F.; 1 spec.; KZM, IC-35891 • Nature reserve „Čepkeliai“, 54°03'09"N, 024°32'49"E; alt. 132 m; 27. VI.1993; leg. G.S.; 2 spec.; KZM. KALININGRAD REGION – Guryevsk • Kaliningrad , 54°43′22″N, 020°31′50″E; alt. 25 m; 03. VI.1996; leg. V.A.; 2 spec.; APC – Pravdinsk • Zehlau Bog , 54°32′1″N, 020°54′48″E; alt. 35 m; 21. V.2007; leg. V.A.; 1 spec.; APC • ibid, 09. V.2008; leg. V.A.; 1 spec.; APC .

Identification. For the diagnostic characters see L. dolorosa .

Published local records. The species was recorded from Jugla and Sigulda [Segewold] surroundings ( Latvia) by Lindberg (1932), Augšdaugavas municipality (the former Daugavpils District) ( Barševskis 1993), the northern part of the former Eastern Prussia (Königsberg, Zehlau, Insterburg) ( Bercio & Folwaczny 1979) without detailed faunistic information. The species was considered not rare and distributed throughout Lithuania excluding in the west ( Pileckis & Monsevičius 1997). Detailed faunistic information was provided on the occurrence of this species in Rīga ( Mīlenders & Varzinska 1979), Augšdaugavas municipality (Ilgas, Viški), Krāslava municipality ( Barševskis 1997); Alytus ( Zajančkauskas & Pileckis 1968), Jonava ( Ferenca 2006) Kaunas, Varėna (as Limnobaris pusio Boheman, 1844 ( Tamutis 2003)) and Trakai ( Pileckis 1960) administrative units.

General distribution. This species is widely distributed throughout the Palaearctic Region, from the British Islands and Spain to Krasnoyarsk Krai ( Russia) and western Mongolia ( Legalov 2020; Alonso-Zarazaga et al. 2023). The northern boundary of the distribution range extends towards 67°N in Sweden and Finland (Lundberg & Gustafsson 1995; Rassi et al. 2015); the southern range extent passes through Italy, Bulgaria, Azerbaijan, Kirgizstan, and north-western China ( Prena et al. 2014b; Alonso-Zarazaga et al. 2023). In northern Africa, Limnobaris t-album is reported from Egypt ( Alonso-Zarazaga et al. 2023).

Notes on biology. Due to the numerous misidentifications and confusion with Limnobaris dolorosa , the available knowledge on the life history of this species is limited ( Prena et al. 2014b). Adults were observed on Carex acutiformis in Germany ( Prena et al. 2014b). Previous records of plant species such as Carex rostrata , C. vesicaria , Cladium mariscus , and Schoenoplectus lacustris as possible hosts for L. t-album ( Burakowski et al. 1995; Yunakov et al. 2018) require further confirmation. Larvae develop at base of stems and rhizomes of host plants ( Smreczyński 1974), overwinter, and pupate within tissues. New generation of adults emerges in April and May ( Burakowski et al. 1995).

Local occurrence and phenology. Limnobaris t-album is likely widespread throughout the study region likewise L. dolorosa , however, the number of known records is significantly lower. Altogether it was recorded from 25 administrative territories: nine in Latvia, 13 in Lithuania, and three from KR ( Figure 2 : B). The adults were collected in similar habitats as L. dolorosa , from Carex spp. Maximum number of adults recorded in May, the earliest record: April 7, the latest: October 7.

Figures

Figure 2. Maps of southeastern Baltic region with a grid of administrative units and shaded units with available records of Limnobaris species. A – L. dolorosa, B – L. t-album.