Latvijas Entomologs 2008, 45: 5-13. 5

Protected Aquatic Insects of Latvia – Leucorrhinia albifrons (BURMEISTER, 1839) and L. caudalis (CHARPENTIER, 1840) (Odonata: Libellulidae)

M
RTIŠ KALNIŠ

Nature Protection Board, Eksporta iela 5, LV-1010 R
ga, Latvia; e-mail: [email protected]

KALNIŠ M. 2008. PROTECTED AQUATIC INSECTS OF LATVIA – LEUCORRHINIA ALBIFRONS (BURMEISTER, 1839) AND LEUCORRHINIA CAUDALIS (CHARPENTIER, 1840) (ODONATA: LIBELLULIDAE). - Latvijas entomologs, 45: 5-13.

Abstract: The Eastern White-faced Darter Leucorrhinia albifrons (BURMEISTER, 1839) and Dainty White-faced Darter L. caudalis (CHARPENTIER, 1840) are protected by the Regulations of Cabinet of Ministry in Latvia. Both species can be found in most European countries. Published data, collections, data collected during the project „Analysis of the Specially Protected Nature Territories in Latvia and Establishing of EMERALD/Natura 2000 Network” and material collected by Latvian entomologists have all been used in the analysis of the distribution of this species. The distribution of L. albifrons and L. caudalis were mapped using a basic grid of 5x5 km squares in the Baltic grid system. In total, L. albifrons is recorded from 96 squares and L. caudalis - from 80 squares in Latvia. The most known localities are concentrated in central and northern Latvia. The majority of localities of L. albifrons in Latvia has been recorded in natural eutrophic the Lakes with Magnopotamion or Hydrocharition – type vegetation and in natural dystrophic the Lakes and ponds, in active raised bogs or transition mires. Other L. albifrons habitats are polytrophic the Lakes and polytrophic oxbow the Lakes with Magnopotamion or Hydrocharition type vegetation, hard oligo-mesotrophic the Lakes with benthic vegetation of Chara spp. The majority of localities of L. caudalis in Latvia has been recorded in natural eutrophic the Lakes with Magnopotamion or Hydrocharition – type vegetation, polytrophic the Lakes and polytrophic oxbow the Lakes with Magnopotamion or Hydrocharition type vegetation. Other L. albifrons habitats are hard oligo-mesotrophic the Lakes with benthic vegetation of Chara spp., natural dystrophic the Lakes and ponds, in active raised bogs or transition mires.

Key words: Odonata, Libellulidae, Leucorrhinia albifrons, Leucorrhinia caudalis, protected species, habitats, distribution, Latvia.

Introduction 1998, Dijkstra 2006). Isolated extinct populations are known from France, Czech The aim of this paper is to summarize Republic, Slovakia and Denmark (Dijkstra available information of the distribution and 2006). L. caudalis can be found in most characteristic habitats Eastern White-faced European countries – Austria, Belarus, Belgium, Darter Leucorrhinia albifrons and Dainty Bulgaria, Bosnia and Herzegovina, Croatia, White-faced Darter Leucorrhinia caudalis in Czech Republic, Denmark, Estonia, Finland, Latvia. Both species are protected in Latvia France, Germany, Hungary, Italy, Latvia, (Regulations… 2000), but data were not Lithuania, Luxembourg, The Netherlands, summarized and the species protection status Norway, Poland, Romania, Serbia, Slovakia, has not been assessed. L. albifrons can be found Slovenia, Sweden, Switzerland, The Ukraine in most European countries – Austria, Belarus, and Russia (Central, Southern and Northern part Czech Republic, Estonia, Finland, France, of Europe), but it is absent from Great Britain. Germany, Latvia, Lithuania, The Netherlands, The species is distributed also in the Asian part Norway, Poland, Sweden, Switzerland, The of Russia – Western Siberia (Askew 1998, Ukraine and Russia (Central, Southern and Dijkstra 2006). An isolated extinct population is Northern part of Europe), but it is absent from known from the Czech Republic (Dijkstra Great Britain as well. It is also distributed in the 2006). Both species are protected in the Asian part of Russia – Western Siberia (Askew majority of European countries following the

6 Protected Aquatic Insects of Latvia – Leucorrhinia albifrons (BURMEISTER, 1839)…

Bern Convention (Bern Convention… 1979) available for Latvia, published in 1999-2000 by and EU directives (Council… 1992). State Land Service of the Republic of Latvia. L. albifrons has been first mentioned for This map is divided at 1x1 km (= 1 km2) Latvia by E. Ozols (1936) without concrete squares and the border of 5x5 km squares locality. Later, the species was found all over coincide with the every fifth km line. Totally, Latvia – the Lake S
vers, the Lake Engure, the the terrestrial territory of Latvia is divided into Lake Alauksts, the Lake Pape, the Lake 2785 squares (some squares are not complete). Gauratas, the Lake Koruu etc. (Brziš 1938, The distribution maps of L. albifrons and Grigulis 1953, Spuris 1952, 1953, 1960, 1963, L. caudalis were prepared based on data in own 1964, 1990). L. caudalis has been first database. mentioned in Latvia by B. Brziš (1942) from The typological classification of water different places all over Latvia. Later the bodies and description of vegetation was based species was recorded from the Lake Engure, the on Kabucis (2000), Cimdiš (2001), Internet Lake Prkou, the Lake Alauksts, the Lake resources (www.ezeri.lv 2007), and Papes, the Lake Pulgosnis, the Lake Lubnas, observations made by the author (oxbow the the Lake Lielauces etc. (Grigulis 1953, Spuris Lakes). 1943, 1952, 1953, 1960, 1963, 1964, 1974, 1990, 1992). Z. Spuris (1956) summarized all Explanations: Distr. – district; env. – known data about both species until 1956. Some environment; NP – National Park; NR – nature reserve; PPNT – particularly protected nature territory; vill. – remarks about confirmed localities and village; num. – numerous; ad. – adult; lv. – larvae; ex. - distribution have been made in several recent exuvie. The number of specimens and development stage papers (Hydrobiological… 1999; Kalniš 2001, (adult or unknown) is given in brackets after the date of 2006; Inberga-Petrovska 2003). collection.

Methods Results

Published data, the collections of the A list of localities of the L. albifrons Department of Zoology and Animal Ecology of arranged by administrative districts. the Faculty of Biology of the University of Alksne Distr., Veclaicene PPNT, the Lake Latvia, collections of the Institute of Biology of Koruu 11.07.1963 (ad.) and the Lake Mazais the University of Latvia, collections of the Paiis 20.06.1964 (ad.) (Spuris 1964); the Mire Natural History Museum of Latvia, the data Baltais PPNT, 25.06.2002 (2 ad.), leg. collected during the project „Analysis of the M.Kalniš; Korneti-Pei PPNT, the Lake Specially Protected Nature Territories in Latvia Kalekaura, 25.06.2002 (1 ad.), leg. M.Kalniš; and Establishing of EMERALD/Natura 2000 the Mire Lepuru PPNT, S part, 25.06.2002 (ad.), Network” in 2001-2002 and material collected leg. M.Kalniš; Korneti-Pei PPNT, the Lake by Latvian entomologists up to 2007 have been Raipala, W part, 16.06.2003 (ad.), leg. used in the analysis of the distribution and V.Spuis; the Lake Meistars near Mrkalne, habitat preference. Data on dragonflies were 03.08.2005 (counted 20 ad. on all lake), leg. collected by using a hydrobiological net or M.Kalniš; the Lake S
u near Mrkalne, entomological net, or by direct observations. 04.08.2005 (1 ad.), leg. M.Kalniš; the Lake The material was collected from 1998 to 2007. Tubua near Mrkalne, 04.08.2005 (3 ad.), leg. Both historical and recent data, totally 169 M.Kalniš. records of L. albifrons and 145 records of Balvi Distr., the Mire Orlovas ( rgu) PPNT, L. caudalis, were included in a Microsoft Office 08.07.2001 (ad.), leg. A. Karpa. Access database hold by the author. Csis Distr., the Lake Alauksta, 14.07.1954 Distribution of L. albifrons was mapped (ad.); Gauja NP, the Lake Ratnieku and in using a basic grid of 5x5 km squares in the numerous small bog lakes in Sudas bog, Baltic grid system on a Transverse Mercator 15.06.1960 (ad.); the Lake Zobols, 20.06.1961 projection (TM-1993) of Latvia. The current (ad.), (Spuris 1963); the Lake Alauksta, Gauja map is based on 1:50 000 scale satellite maps NP, Sudas bog, (Spuris 1956); Gauja NP,

Latvijas Entomologs 2008, 45: 5-13. 7

Gulbjusalas bog, the Lake Melnezers, Madona Distr., the Lake Julsnu, 01.07.1961 10.08.1999 (ad.), leg. S.Inberga; Gauja NP the (ad.), the Lake Gr
vu, 16.07.1961 (ad.), the oxbow lake T
tmau near L
gatne, 16.06.2002 Lake rgu (Vecmuižas), 24.08.1962 (1 ad.), (num. ad.), 04.06.2005 (2 ad.), 18.06.2005 (1 (Spuris 1963); Teići NR, the Lake Kurtavas, ad.), 28.05.2006 (1 ad.), including teneral 14.07.1964 (ad.), (Spuris 1964); Teići NR, the specimens, leg. M.Kalniš; Gauja NP, Sudas Lake Kurtavas near Brbau pussala, 22.06.1997 bog, 14.06.2003 (ad.), leg. V.Spuis; Gauja (10 ad.), the Lake Vaboles, 25.06.1997 (ad.), the NP, Sudas bog, Purgaiu dzelmes (small bog Lake Murmastienes, 25.08.1997 (6 ex.), the lakes), 15.07.2004 (1 ad.), leg. M.Kalniš; the Lake Lisiš, 26.08.1997 (ad.), the Lake Islienas, Lake Vrnezers near Vecpiebalga, 07.08.2005 11.06.-27.06.1997, 20.08-03.09.1997 (ad.), the (2 ad.), leg. M.Kalniš. Lake Mindaugas, 11.06.-27.06.1997, 20.08- Daugavpils Distr., the Lake Sventes PPNT, SW 03.09.1997 (ad.), the Lake Sildu, 11.06.- part near Riekstii, 30.06.2002 (1 ad.), leg. 27.06.1997, 20.08-03.09.1997 (ad.), (Matthes & R.Cibuskis. Matthes 1997); Krustkalni NR, 15.06.2001 (1 Dobele Distr., V
u marsh in the Lake ad.), leg. G.Akmentiš; Driksnas sils PPNT, Lielauces S part, (Spuris 1952); the Lake mire near lake, 28.06.2004 (1 ad.), leg. Gauratas, the Lake Lielauces (Spuris 1956). G.Akmentiš; the Mire Palšu PPNT, SW part, Jkabpils Distr., the Lake Piksteres, (Spuris 11.07.2001 (num. ad.), leg. M.Kalniš; Krauku 1953, 1956); the Mire Nomavas PPNT, the Lake quarry near Cesvaine 23.06.2002 (2 ad.), leg. Nomavas N part, 04.07.2002 (ad.), leg. M.Kalniš. R.Cibuskis. Ogre Distr., the Lake Lobes (Viskau), Jelgava Distr., Zaenieki (Spuris 1956). 17.06.1957 (ad.), (Spuris 1963); the Lake Jrmala city, Jaundubulti, forest, gardens Selku 3 km N from Ikšile, 12.07.1988 (1 ad.), (Spuris 1963); Melluži, 16.06.1930 (1 ad.), leg. (Spuris 1990). J.Muskars (collection of Natural History Rzekne Distr., Kvapni vill., near forest, Museum of Latvia). 15.06.1957 (Spuris 1963). Krslava Distr., the Lake S
vers, 15.06.1938 Rga Distr., the Lake Aklais, the Lake L
u, the (ad.) (Brziš 1938); the Lake Mazais Ožuhu, Lake Lilastes, the Lake Vidus, the Lake Lielais the Lake Ojatu, the Lake Skaists, the Lake Baltezers, the Lake Lielais J gu, the Lake S
vers, the Lake Jodu, the Lake Dr
dzis, the Slokas, the Lake Buu PPNT, (Spuris 1953, Mire Bleideu near the Lake S
vers (Spuris 1956); emeri between emeri and emeru 1956). t
relis, the Lake Langstiu, the Lake Laveru Liepja Distr., the Lake Pape, 15.06.1958 (1 near Carnikava, the Lake Sudrabezers, the Lake ad.), (Spuris 1963); the Lake Tosmre PPNT, Sun
šu near Upesciems, R
ga, Ulbroka, Varkai 30.06.2001 (ad.), leg. E.Dreijers; the Lake Tšu near the Lake Bab
tes, (Spuris 1956); the Lake PPNT, E bank near V
nkalni and Krasti vill., Laveru near Carnikava, 22.06.1955 (Spuris 22.06.2002 (ad.), leg. V.Spuis; the Lake 1963); R
ga, 13.06.1937 (1 ad.), leg. J.Muskars Liepjas PPNT, V
tiu meadows, 27.06.2003 (collection of Natural History Museum of (ad.), leg. V.Spuis; Latvia); the Lake Buezers PPNT, 15.07.2001 Limbaži Distr., Pirtsmeža mire PPNT, (1 ad.), leg. M.Kalniš; the Mire Dzelves-Kroa 20.06.2001 (ad.), leg. V.Spuis; Lielpurvs PPNT, N part near Dzelves, 23.07.2001 (2 ad. in PPNT, W part, 27.06.2001 (ad.), leg. copula), leg. M.Kalniš; the Lake Ummis V.Spuis; the Mire Laugas, the Lake Višezers PPNT, 23.07.2001 (2 ad.), leg. M.Kalniš; the PPNT, 23.07.2001 (2 ad.), leg. M.Kalniš; the Lake Ummeru, N part, 29.07.2001 (4 ad.), leg. Lake Grabatiš, 31.07.2005 (counted 25 ad. in M.Kalniš; the Lake Bab
te, NW part, near all lake), leg. M.Kalniš; Ainažu env., quarry S Spuciems, 12.08.2001 (ad.), leg. S.Inberga; from Šalkas, 21.06.2007 (2 ex.), leg. M.Kalniš; emeru t
relis PPNT, 04.06.2002 (1 ad.), leg. quarry N from Šalkas, 21.06.2007 (1 ex.), leg. V.Spuis; Mazie Kangari PPNT, the Mire M.Kalniš. Buu SW part, 08.06.2003 (ad.), leg. Ludza Distr., Cucuri, S from Rundni, V.Spuis; emeri NP, the Mire Labais 06.08.2005 (fragments), leg. R.Bernard. 02.06.2006 (num. ad. and teneral specimens),

8 Protected Aquatic Insects of Latvia – Leucorrhinia albifrons (BURMEISTER, 1839)… leg. Z.P
pkalja; emeri NP, ponds S from the (1 ad.), leg. V.Spuis. Lake Lilijezers, 11.06.2006 (70 ad. on 200 m, Two localities previously mentioned in ad. and teneral specimens), leg. M.Kalniš; literature, were unable find on maps - the Lake Cenas t
relis PPNT, the Lake Skaists, Bojartu, 07.07.1960 (ad.) (Spuris 1963) and the 15.06.2007 (20 ad.), leg. M.Kalniš; Cenas Lake Salaku (Spuris 1956). The data on t
relis PPNT, 02.07.2007 (1 ad.), leg. A.Klepers. presence of dragonflies are known from 669 Talsi Distr., the Lake Sirdsezers (Sukturu), squares (5x5 km) of 2785. L. albifrons is 08.08.1960 (ad.), (Spuris 1963); the Lake recorded from 96 squares (Figure 1), thus Engure PPNT near Lielsala island, 16.05.1958 covering 3.4 % on the territory of Latvia. (20 lv/m2), 03.07.1958 (101 lv/m2), 25.07.1958 (13 lv/m2), 13.08.1958 (109 lv/m2), 16.09.1958 A list of localities of the L. caudalis (289 lv/m2), 11.06.1959 (8 lv/m2), 12.06.1959 arranged by administrative districts. (17 lv/m2), 27.06.1959 (57 lv/m2), 16.07.1959 Aizkraukle Distr., the Lake Odzes, 16.06.1957 (37 lv/m2), 12.08.1959 (45 lv/m2), 10.09.1959 (ad.), (Spuris 1963). (83 lv/m2) on Chara aspera and Chara Alksne Distr., Veclaicene PPNT, the Lake intermedia, but not all specimens were Klotiu, 11.07.1963 (ad.), (Spuris 1964). L. albifrons (Spuris 1960); Talsu pauguraine Balvi Distr., the Lake Prkou near Balvi, PPNT, the Lake Mc
tjmjas, the Lake 12.07.1956 (ad.), (Spuris 1963). Bezdibeezers, 07.06.2002 (num. in both lakes, Csis Distr., Csis, 10.06.1940 (1 ad.), (Spuris ad.), leg. V.Spuis; Sl
tere NP, the Lakes 1943); the Lake Alauksts, 14.07.1954, Pterezeri, 17.07.2005 (20 ad.), 23.07.2006 (8 09.06.1957 (ad.); the Lake Tauns near ad.), 30.05.2007 (40 ad.), leg. M.Kalniš; Vecpiebalga, 10.06.1957 (ad.); the Lake Zobols, Šl
tere env. Kppurpavu peat quarry, 20.06.1961 (ad.), (Spuris 1963); the Lake 30.05.2007 (75 aDistr., 7 ex.), leg. M.Kalniš. Alauksts, Csis env., (Spuris 1956); the Lake Tukums Distr., L
gciems, 26.06.1953 (1 ad.), Leimau, rivulet 1 km from the lake near (Grigulis 1953); the Lake Engure PPNT, (Spuris L ni, 02.06.1990 (3 ad.), the Lake Buezers, 1953, 1956, 1960, Hydrobiological...1999); the S from the Lake Leimau near L ni, Lake Engure PPNT, near the Ornithological 03.06.1990 (1 ad.), the lake with marshy banks Field station of Institute of Biology, 07.06.1999 (Spuris 1992); Gauja NP, the Lake Driškins, (ad.), 12.06.1999 (4-10 ad.), 19.06.1999 (11-50 10.08.1999 (ad.), leg. S.Inberga; Gauja NP the ad.), 26.06.1999 (11-50 ad.), 07.07.1999 (51- oxbow lake T
tmau near L
gatne, 18.06.2005 100 ad.), 17.07.1999 (4-10 ad.), 24.07.1999 (1 ad.), 28.05.2006 (6 ad.), including teneral (ad.), 30.07.1999 (1-3 ad.) 07.08.1999 (1-3 ad.) specimens, leg. M.Kalniš; Gauja NP, oxbow (Inberga-Petrovska 2003); emeri NP, the Lake near Amata the River entry, 05.07.2003 (num. Grgau, 11.06.2006 (12 ad. including teneral ad.), oxbow Rakstu maz, 05.07.2003 (num. specimens, 8 ex.), leg. M.Kalniš; emeri NP, ad.), leg. M.Kalniš. the Lake Grgau and adjacent territories, Dobele Distr., V
u marsh in the Lake 18.07.2007 (133 ad.), leg. M.Kalniš. Lielauces S part, 06.07.1950 (Spuris 1952); the Valka Distr., the Mire Sedas PPNT, in several Lake Lielauces, marshy banks, 24.-25.05.1950 places, 07-08.06.2001 (num. ad. and teneral (Spuris 1952, 1956). specimens), leg. M.Kalniš, V.Spuis; Gulbene Distr., the Mire Lielais Mrku PPNT, Ziemegauja PPNT, the oxbow lake in Zem SW part near the Lake Ušuru, 26.06.2002 (ad.), sala, 18.06.2001 (num. ad.); the Mire Kru leg. K.Vilks. PPNT, 18.06.2002 (num. ad.), leg. M.Kalniš; Jkabpils Distr., the Lake Piksteres, (Spuris the Mire Purgaiu, lake, 02.08.2005 (15 ad. in 1953, 1956); the Lake Silabebru PPNT, all lake) M.Kalniš. 10.07.2001 (1 ad.), leg. G.Akmentiš. Valmiera Distr., quarry near Vidusburtnieks Krslava Distr., the Lake Mazais Ožuhu, PPNT, 26.06.2005 (1 ad.), leg. M.Kalniš. (Spuris 1953); the Lake Ata (Ota), the Lake Ventspils Distr., Ance bogs and forests PPNT, Aulejas, the River Dubna in Aulejas parish, the the Lake Puterezers, 01.07.2001 (num. ad.), leg. Lake Mazais Ožuhu, the Lake Ojatu, the Lake V.Spuis; the Mire Klu PPNT, 18.06.2005 Plaud
ša, the Lake S
vers, the Lake Dr
dzis, the

Latvijas Entomologs 2008, 45: 5-13. 9

Mire Bleideu near the Lake S
vers (Spuris Vecm
lgrvis 12.06.1966 (1 ad.), leg. J.Muskars 1956). (collection of Natural History Museum of Liepja Distr., Liepja, (Spuris 1956); the Lake Latvia); the Lake Bab
te, SW part, near Gtes Pape, 24.05.1957, 15.06.1958 (ad.), (Spuris pavas, 12.08.2001 (ad.), leg. S.Inberga; emeri 1963); the Lake Tšu PPNT, E bank near NP, the Mire Labais 02.06.2006 (num. ad. and V
nkalni and Krasti vill., 22.06.2002 (ad.), leg. teneral specimens), leg. M.Kalniš; emeri NP, V.Spuis. ponds S from the Lake Lilijezers, 11.06.2006 (5 Limbaži Distr., the Lake Limbažu D ezers, ad. on 200 m, ad. and teneral specimens), leg. (Spuris 1956); the Lake Limbažu D ezers, M.Kalniš; R
ga, Mangasala, near Daugava the 06.07.1955 (ad.), (Spuris 1963); Augstroze River entry, 07.06.2007 (3 ad.), leg. M.Kalniš. PPNT, 13.06.2001 (ad.), leg. V.Spuis; Talsi Distr., the Lake Engures, Liel sala, Lielpurvs PPNT, W part, 27.06.2001 (ad.), leg. 01.06.1958 (54 ad.), (Spuris 1960); the Lake V.Spuis. Mc
tjmuižas S, 06.06.1960 (ad.) the Lake Madona Distr., the Lake rgu (Vecmuižas), Engure, NW bank, 19.06.1960 (ad.), (Spuris the Lake Pekšnu, (Spuris 1956); the Lake 1963); the Lake Engure PPNT near Lielsala Pekšnu, 30.06.1955 (ad.), the Lake Pulgosnis, island, 16.05.1958 (33 lv/m2), 03.07.1958 (42 29.06.1961 (ad.), the Lake Vidus, 03.07.1961 lv/m2), 13.08.1958 (10 lv/m2), 16.09.1958 (11 (ad.), the Lake Linu (between the Lakes Dinišku lv/m2), 27.06.1959 (10 lv/m2), 12.08.1959 (48 and Vidus), 04.07.1961 (ad.), the Lake rgu lv/m2), 10.09.1959 (50 lv/m2), on Chara aspera (Vecmuižas), 29.06.1955 (ad.), 24.08.1962 (1 and Chara intermedia (Spuris 1960); Talsu ad.), (Spuris 1963). pauguraine PPNT, the Lake Mc
tjmjas, the Ogre Distr., the Lake Lobes (Viskau), Lake Sirdsezers, 07.06.2002 (num. in both 17.06.1957 (ad.), (Spuris 1963); the Lake lakes, ad.), leg. V.Spuis; Sl
tere NP, the Selku 3 km N from Ikšile, 10.06.1988 (1 ad.), Lakes Pterezeri, 23.07.2006 (3 ex.), 12.07.1988 (1 ad.), (Spuris 1990); the Lake 30.05.2007 (1 aDistr., 3 ex.), leg. M.Kalniš. Kaparmura (Spuris 1953, 1956). Currently the Tukums Distr., L
gciems, 26.06.1953 (1 ad.), Lake Kaparmura is dehumidified (Grigulis 1953); the Lake Engure, 01.01.1958 (www.ezeri.lv 2007). (frequently) (Spuris 1960); Dzirnavu pond on Rzekne Distr., the Lake Feimau (Spuris P res rivulet before entry in the River Abava, 1956); the Lake Lubna near the River Rzekne 09.06.1956 (ad.) (Spuris 1963); the Lake Engure entry, 12.06.1957 (ad.), the Lake Lielivliu PPNT, (Hydrobiological...1999); the Lake (Gaigalava, Lielais Kiuriš), 13.06.1957 (ad.), Engure PPNT, near the Ornithological Field Kvapni vill., near forest, 15.06.1957 (Spuris station of Institute of Biology, 29.05.1999 (1-3 1963); the Mire T
rumnieku PPNT, near the ad.), 07.06.1999 (4-10 ad.), 12.06.1999 (11-50 Lake Teirumn
ku S part, 27.07.2002 (ad.), leg. ad.), 19.06.1999 (11-50 ad.), 26.06.1999 (ad.), G.Akmentiš. 07.07.1999 (51-100 ad.), 17.07.1999 (4-10 ad.), Rga Distr., the Lake L
u, the Lake Vidus, the 24.07.1999 (1-3 ad.), 30.07.1999 (4-10 ad.) Lake Vidus, the Lake Lielais Baltezers, the 07.08.1999 (1-3 ad.) (Inberga-Petrovska 2003). Lake Lielais J gu, the Lake Sudrabezers, Valka Distr., the Mire Sedas PPNT, in several (Spuris 1953); Gauja oxbows near Inćukalns, places, 07-08.06.2001 (num. ad. and teneral the Lake L
u, the Lake Lielais Baltezers, the specimens), leg. M.Kalniš, V.Spuis; Lake Lielais J gu, the Lake Lilaste, the Lake Ziemegauja PPNT, the oxbow Lakes: NW from Laveru near Carnikava, the River Maz Jugla Vadži, near Kai, near Starkas, near Zvejnieki, near Cekule station, the Lake Sekšu, the Lake 25.06.2004 (num. ad.), near Zem sala, Sudrabezers, R
ga, Ulbroka, the Lake Vidus, 20.06.2001 (num. ad.), 25.06.2004 (8 ad.), near (Spuris 1956); the Lake Dzirnezers, 21.07.1956, Maltuve, the Lake Dibenu, the Lake Zu, the the Lake Laveru near Carnikava, 22.06.1955, oxbow Lake near Z
le, 26.06.2004 (num. ad.), 23.05.1959 (Spuris 1963); Sigulda, Saulstaru the oxbow Lake near Tilikas, the oxbow Lake oxbow, 02.06.1971 (2 teneral), Sigulda, near densmaisi, 04.07.2006 (num. ad.), leg. Vikmestes pound, 09.06.1971 (3 ad.) (Spuris M.Kalniš. 1974); R
ga, 15.06.1938 (1 ad.), R
ga, Valmiera Distr., Valmiera (Spuris 1956); the

10 Protected Aquatic Insects of Latvia – Leucorrhinia albifrons (BURMEISTER, 1839)…

Mire V
vnu PPNT, 12.06.2001 (1 ad.), leg. lakes. So far, L. albifrons was found in one V.Spuis. oxbow lake along the River Gauja inside the Ventspils Distr., Ance bogs and forests PPNT, Gauja NP and in one oxbow lake along the Austerlunka, 01.07.2001 (num. ad.), leg. River Gauja inside the Ziemegauja PPNT. V.Spuis; Raupe PPNT, the River Raupe L. caudalis was found in five oxbow lakes along valley near cemetery S from Kuikas, 08.07.2006 the River Gauja inside the Gauja NP and in 10 (3 ad.), leg. D.Telnov. oxbow lakes along the River Gauja inside the Ziemegauja PPNT. Approximately 350-400 Two localities previously mentioned in oxbows are estimated to occur along The River literature, were unable find on maps - the Lake Gauja from Gaujiena to the estuary (stretch K ku (NE from the Lake Bojartu), 08.07.1960 length about 250 km). Based on data on the (ad.) (Spuris 1963) and the Lake Salaku (Spuris species distribution and habitat requirements, it 1956). The data on presence of dragonflies are is estimated that L. caudalis micropopulations known from 669 squares (5x5 km) of 2785. may be found in ca. 1/4 of all oxbow lakes L. caudalis is recorded from 80 squares (Figure inside the Gauja NP (about 20-30 oxbow lakes) 2), thus covering 2.9 % on the territory of and in ca. 1/2 of all oxbow lakes inside the Latvia. Ziemegauja PPNT (about 30-40 oxbow lakes), but L. albifrons only in few oxbow lakes. Discussion According to Dijkstra (2006) the L. albifrons inhabits a wide selection of lakes, Based on assessments made until 2001 by especially shallow ones in forests with abundant author, populations of L. albifrons and floating and emergent vegetation. Although it is L. caudalis occur on 30-50 localities in Latvia. confined to mesotrophic lakes in the periphery As the types of habitats, such as eutrophic lakes of its range. Elsewhere, it is also occurs in rather and oxbow lakes, where the both species have acidic, oligotrophic or eutrophic waters. The been found, are widespread in Latvia and the majority of localities of L. albifrons in Latvia environmental conditions of the historically has been recorded in natural eutrophic lakes known localities have not changed significantly with Magnopotamion or Hydrocharition – type (www.ezeri.lv 2007, Cimdiš 2001), these vegetation (ca. 34 localities) and in natural species probably occur in larger number of dystrophic lakes and ponds, in active raised localities. bogs or transition mires (ca. 34 localities). Other The majority of the recent localities are L. albifrons habitats are polytrophic lakes ca. 7 situated in the central and the northern part of localities) and polytrophic oxbow lakes with Latvia. This is partially a result of the frequency Magnopotamion or Hydrocharition type of visiting. Data of 53 squares for L. albifrons vegetation (2 localities), hard oligo-mesotrophic and 29 squares for L. caudalis were gathered lakes with benthic vegetation of Chara spp. (4 during the last decade. This is a result of localities). Only in a few cases species have focused studies of protected nature territories been observed in gravel quarries (5 localities), during the project „Analysis of the Specially peat quarries (1 locality) and oligotrophic to Protected Nature Territories in Latvia and mesotrophic standing waters with vegetation of Establishing of EMERALD/Natura 2000 the Littorelletea uniflorae and/or Isoëto- Network” and the author’s studies in the oxbow Nanojuncetea (2 localities). lakes of the River Gauja. Totally L. albifrons According to Dijkstra (2006) the and L. caudalis found in 137 localities, 39 L. caudalis prefers pools and lakes, often in (28 %) of them these species are common. forests (but not shaded), with moderate nutrient Further analyses shows, that another levels and rich (especially aquatic) vegetation. Leucorrhinia species, the Large White-faced In the periphery of its range, often found in Darter L. pectoralis, is strongly connected with oxbows and fishponds. The majority of oxbow lakes (Kalniš 2007). Similar analysis on localities of L. caudalis in Latvia includes L. albifrons and L. caudalis show, that these natural eutrophic lakes with Magnopotamion or species are more or less related with oxbow Hydrocharition – type vegetation (ca. 42

Latvijas Entomologs 2008, 45: 5-13. 11 localities), polytrophic lakes (2 localities) and 2000 aizsargjamo teritoriju t
klu” dati un polytrophic oxbow lakes with Magnopotamion Latvijas entomologu ievktais materils. or Hydrocharition type vegetation (15 L. albifrons un L. caudalis izplat
bas attlošanai localities). Other L. albifrons habitats are hard izmantots 5x5 km kvadrtu t
kls Baltijas oligo-mesotrophic lakes with benthic vegetation koordintu sistm. Pašlaik L. albifrons of Chara spp. (3 localities), natural dystrophic konstatta 96 kvadrtos, bet L. caudalis 80 lakes and ponds, in active raised bogs or kvadrtos. Vairums atradu atrodas Latvijas transition mires (7 localities). Most oxbow lakes centrlaj un ziemeu da. Lielk daa inspected by the author have dense vegetation L. albifrons atradu konstatta dab
gos eitrofos with high diversity of aquatic plants species, ezeros ar iegrimušo densaugu un peldaugu with stands of Water soldier Stratiotes aloides. augju un distrofos ezeros, ar
augstajos un The studies made in lhe Lake Engure in prejas purvos un cits distrofs denstilpns. 1999 (Inberga-Petrovska 2003) and in T
tmau Citi L. albifrons apdz
votie biotopi ir politrofi the oxbow lake in 2005 (Kalniš 2006) and ezeri un politrofas vecupes ar iegrimušo recent data showed, that the flight season of the densaugu un peldaugu augju, mezotrofas L. albifrons is mainly from mid June to late denstilpnes ar bentisku mieturau augju. July, rarely in late May and early August, but of Lielk daa L. caudalis atradu konstatta the L. caudalis mainly in June and July, rarely dab
gos eitrofos ezeros ar iegrimušo densaugu in late May and early August (in general longer un peldaugu augju, politrofos ezeros un than L. albifrons). politrofs vecups ar iegrimušo densaugu un peldaugu augju. Citi L. albifrons apdz
votie Acknowledgements biotopi ir mezotrofas denstilpnes ar bentisku mieturau augju, distrofos ezeros, ar
I am grateful to my colleagues S. Inberga- augstajos un prejas purvos un cits distrofs Petrovska (The Entomological Society of denstilpns. Latvia, R
ga), A. Karpa (Institute of Biology, University of Latvia, Salaspils), G. Akmentiš References (Teići Nature Reserve, audona), R. Cibuskis (Daugavpils University, Daugavpils), Askew R. 1988. The Dragonflies of Europe. A. Klepers (Latvian Fund for Nature, R
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12 Protected Aquatic Insects of Latvia – Leucorrhinia albifrons (BURMEISTER, 1839)…

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Latvijas Entomologs 2008, 45: 5-13. 13

Figure 1. A distribution of Leucorrhinia albifrons in Latvia (black squares), and all dragonfly records (grey squares) until December 2007.

Figure 2. A distribution of Leucorrhinia caudalis in Latvia (black squares), and all dragonfly records (grey squares) until December 2007.