taxonID	type	description	language	source
BE0387A2FFDED743FDE1FC5CFD48778D.taxon	description	Figs 3, 4 A, 7, 11 A, 12 A	en	Haarto, Antti, Ståhls, Gunilla (2026): The Finnish species of Pipizella Rondani, 1856 (Diptera, Syrphidae), with descriptions of the female sex of Pipizella certa Violovitsh, 1981 and Pipizella obscura van Steenis & Lucas, 2011. European Journal of Taxonomy 1066: 1-21, DOI: 10.5852/ejt.2026.1066.3290, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3290/14505
BE0387A2FFDED743FDE1FC5CFD48778D.taxon	materials_examined	Material examined (females only) FINLAND • 1 ♀; Lohja, Vainiola; 6680: 3328 [60 ° 12 ′ N, 23 ° 55 ′ E]; 16 Jun. 2004; A. Haarto leg.; A. Haarto det.; AHa 24 - 001288, Coll. ZMUT, DIPT _ 01239 • 1 ♀; Laukaa, sorakuoppa; 69207: 34333, [62 ° 23.1 ’ ′ N, 25 ° 43.2 ′ E]; 17 Jul. 2006; Iiro Kakko leg.; det. A. Haarto; AHa 24 - 001311, Coll. IKC • 1 ♀ Joutseno, Riikanmaa; 67765: 35913 [61 ° 05.3 ′ N, 28 ° 41.4 ′ E]; 28 Jun. 2023; A. Haarto leg.; AHa 23 - 000414, Coll. AHC.	en	Haarto, Antti, Ståhls, Gunilla (2026): The Finnish species of Pipizella Rondani, 1856 (Diptera, Syrphidae), with descriptions of the female sex of Pipizella certa Violovitsh, 1981 and Pipizella obscura van Steenis & Lucas, 2011. European Journal of Taxonomy 1066: 1-21, DOI: 10.5852/ejt.2026.1066.3290, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3290/14505
BE0387A2FFDED743FDE1FC5CFD48778D.taxon	description	Description of female General appearance as in Fig. 3. Body length 7.34 – 7.75 mm (mean 7.48 mm) and wing length 4.64 – 4.89 mm (mean 4.74 mm) by three measured specimens. HEAD. Shiny black. Eyes with short white hairs. Width of ocellar triangle is 1.3 times its length. Ocellar triangle with pale yellow erect hairs. Vertex over three times as broad as the diameter of an ocellus and dorsally with pale yellow erect hairs. Occiput laterally narrower than the diameter of an ocellus and with white short erect hairs. Face flat without facial tubercle and with a small prominent mouth edge. Face with white semierect hairs. Height of gena is about a third of the length of its white erect hairs. Frontal ratio DBE / DBO is 1.61 – 1.94 (mean 1.72). The width of frons (DBE) and the distance between outsides of the hind ocelli (DBO) are measured at level of the posterior ocelli (see Fig. 2). Frons mainly with white erect hairs, but anteriorly near lunule and in posterior third in front of ocelli with black erect hairs. Lunule shiny black. Antennal fossa not separated by a medial extension of the lunule. Antenna brownish black. Maximum length of basoflagellomere 1.96 – 2.26 (mean 2.09) times as long as its maximum width. Arista bare, apically brownish black and yellowish brown on basal ⅓ and about as long as basoflagellomere. THORAX. Scutum and scutellum shiny black with short, pale yellow erect hairs. Posterior margin of scutellum dorsally with pale yellow erect hairs almost as long as length of scutellum and ventrally with short white hairs. Pleura dull black mainly with grey pollinosity, anepimeron and katepisternum partly shiny and anepisternum anteriorly shiny and posteriorly pollinose. Posterior part of anepisternum and anterior part of anepimeron with long pale yellow erect hairs. Dorsal part and ventral corner of katepisternum with white erect hairs. Calypter white with pale yellow margin and white hairs on margin. Halter pale yellow with pale brown base of stem. WING. Completely microtrichose. Membrane hyaline. Pterostigma yellowish brown. LEGS. Coxae dull black with grey pollinosity. Front and mid coxae with adpressed short white hairs. Hind coxa with erect white hairs. Trochanters black, front and mid trochanters dull with grey pollinosity and hind trochanter shiny. Femora mainly black but apically narrowly yellow. Front and mid femur mainly with semi-erect short pale yellow hairs but posteriorly with pale yellow hairs about as long as diameter of femur. Hind femur mainly with erect pale yellow hairs somewhat longer than the diameter of the femur. Tibiae black, but apically narrowly yellow, and basally the length of the yellow part varies from a third to half of tibial length. Tibiae with semi-erect white hairs sometimes mixed with some black hairs. Longest hairs on anterior side of hind tibia are about 1.4 times as long as diameter of tibia. Basotarsomere of front and mid tarsi yellow. Hind tarsus with basotarsomere dorsally brown and ventrally yellow. Otherwise, tarsi brown, but 2 nd tarsomere of mid tarsus sometimes yellow. All tarsi with adpressed pale yellow hairs. ABDOMEN. Terga shiny black, with predominantly short white erect hairs, interspersed with various amounts of black hairs. Posterior margins of terga 2 – 3 broadly with short black erect hairs. Anterior margins of terga 3 – 4 broadly with short black erect hairs. Anterior corner of tergum 2 laterally with some long white hairs. Terga 2 – 4 at least twice as wide as wide as long. Ratio T 4 WL is 1.31 – 1.45 (mean 1.38) measured as in Fig. 1. Sterna shiny brown, but sternum 1 dull black with grey pollinosity. Sternum 2 with long white erect hairs. Sternum 3 with semi-erect white hairs anteriorly and adpressed white hairs posteriorly. Sternum 4 with erect white hairs anteriorly and adpressed white hairs posteriorly. Sternum 5 with some black erect hairs.	en	Haarto, Antti, Ståhls, Gunilla (2026): The Finnish species of Pipizella Rondani, 1856 (Diptera, Syrphidae), with descriptions of the female sex of Pipizella certa Violovitsh, 1981 and Pipizella obscura van Steenis & Lucas, 2011. European Journal of Taxonomy 1066: 1-21, DOI: 10.5852/ejt.2026.1066.3290, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3290/14505
BE0387A2FFDED743FDE1FC5CFD48778D.taxon	diagnosis	Differential diagnosis Both sexes of Pipizella certa can be readily differentiated from the two other Finnish species based on the entirely yellow front basotarsomere, and in the males also by the structure of the male genitalia. The female of Pipizella certa has on average a narrower frons and a shorter basoflagellomere than either P. obscura or P. viduata (Fig. 4); however, the number of studied specimens is small.	en	Haarto, Antti, Ståhls, Gunilla (2026): The Finnish species of Pipizella Rondani, 1856 (Diptera, Syrphidae), with descriptions of the female sex of Pipizella certa Violovitsh, 1981 and Pipizella obscura van Steenis & Lucas, 2011. European Journal of Taxonomy 1066: 1-21, DOI: 10.5852/ejt.2026.1066.3290, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3290/14505
BE0387A2FFDED743FDE1FC5CFD48778D.taxon	distribution	Distribution. Estonia, Finland (Fig. 14 A), Russia, Sweden.	en	Haarto, Antti, Ståhls, Gunilla (2026): The Finnish species of Pipizella Rondani, 1856 (Diptera, Syrphidae), with descriptions of the female sex of Pipizella certa Violovitsh, 1981 and Pipizella obscura van Steenis & Lucas, 2011. European Journal of Taxonomy 1066: 1-21, DOI: 10.5852/ejt.2026.1066.3290, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3290/14505
BE0387A2FFD0D746FDAEFA77FD957786.taxon	description	Figs 1 – 2, 4 B, 5, 6 A, 8 – 9, 11 B, 12 B	en	Haarto, Antti, Ståhls, Gunilla (2026): The Finnish species of Pipizella Rondani, 1856 (Diptera, Syrphidae), with descriptions of the female sex of Pipizella certa Violovitsh, 1981 and Pipizella obscura van Steenis & Lucas, 2011. European Journal of Taxonomy 1066: 1-21, DOI: 10.5852/ejt.2026.1066.3290, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3290/14505
BE0387A2FFD0D746FDAEFA77FD957786.taxon	materials_examined	Material examined (females only) FINLAND • 1 ♀; Suomussalmi, Lehtovaara; 72388: 36243 [65 ° 13.3 ′ N, 29 ° 39.2 ′ E]; 29 Jun. 2011; A. Haarto leg.; AHa 11 - 003676; DNA MZH _ HP. 585 [specimen considered lost] • 1 ♀; Kuusamo, Juuma; 73543: 36056 [66 ° 15.8 ′ N, 29 ° 20.8 ′ E]; 26 Jun. 2019; A. Haarto leg.; AHa 19 - 000709; FinBOL DNA, JP 2022 - 010, TACHF 158 - 22; Coll. AHC • 1 ♀; Hämeenlinna, Hattelmalanharju; 6766: 3362 [60 ° 58 ′ N, 24 ° 26 ′ E]; 24 May 2010; Iiro Kakko leg.; AHa 24 - 001297; Coll. IKC • 1 ♀; Riihimäki, Monni; 67311: 33819 [60 ° 40.3 ′ N, 24 ° 50.1 ′ E]; 20 Jul. 2014; Iiro Kakko leg.; AHa 24 - 001298; Coll. IKC • 1 (Collected with a male (AHa 24 - 001308, Coll. IKC )) ♀; Janakkala, Suurisuo; 67663: 33816 [60 ° 59.3 ′ N; 24 ° 48.5 ′ E]; 4 Jun. 2018; Iiro Kakko leg.; AHa 24 - 001299; Coll. IKC • 1 ♀; Hämeenlinna, Hattelmalanharju; 67651: 33632 [60 ° 58.3 ′ N; 24 ° 28.2 ′ E]; 12 Jun. 2021; Iiro Kakko leg.; AHa 24 - 001300; Coll. IKC • 1 ♀; Luumäki; 67553: 35174 [60 ° 54.4 ′ N, 27 ° 19.0 ′ E]; 16 Jun. 2022; Iiro Kakko leg.; AHa 24 - 001301; Coll. IKC • 1 ♀; Imatra, Mellonmäki; 67848: 35942 [61 ° 09.6 ′ N; 28 ° 44.8 ′ E]; 30 Jun. 2023; Iiro Kakko leg.; AHa 24 - 001302; Coll. IKC • 1 ♀; Lappeenranta, Rantatie X; 67832: 35838 [61 ° 08.9 ′ N; 28 ° 33.1 ′ E]; 28 Jun. 2023; Iiro Kakko leg.; AHa 24 - 001303; Coll. IKC • 1 ♀; Liperi, Ylämylly, ratapiha; 69489: 36320 [62 ° 37.2 ′ N; 29 ° 34.1 ′ E]; 9 Jul. 2018; Iiro Kakko leg.; AHa 24 - 001305; Coll. IKC • 1 ♀; Kitee, Partasensaari; 68863: 36702 [62 ° 02.7 ′ N; 30 ° 15.2 ′ E]; 10 Jul. 2018; Iiro Kakko leg.; AHa 24 - 001306; Coll. IKC • 1 ♀; Sodankylä, Madevaara S; 74547: 34836 [67 ° 10.8 ′ N; 26 ° 36.7 ′ E]; 24 Jun. 2018 Iiro Kakko leg.; AHa 24 - 001307; Coll. IKC.	en	Haarto, Antti, Ståhls, Gunilla (2026): The Finnish species of Pipizella Rondani, 1856 (Diptera, Syrphidae), with descriptions of the female sex of Pipizella certa Violovitsh, 1981 and Pipizella obscura van Steenis & Lucas, 2011. European Journal of Taxonomy 1066: 1-21, DOI: 10.5852/ejt.2026.1066.3290, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3290/14505
BE0387A2FFD0D746FDAEFA77FD957786.taxon	description	Description of female General appearance as in Fig. 5. Body length 5.32 – 7.36 mm (mean 6.28 mm) and wing length 3.64 – 4.82 mm (mean 4.19) (n = 11). HEAD. Shiny black. Eye with short white hairs. Width of ocellar triangle is 1.3 times its length. Ocellar triangle with pale yellow erect hairs. Vertex over three times as broad as the diameter of an ocellus and with pale yellow erect hairs. Occiput laterally narrower than the diameter of an ocellus and with white short erect hairs. Face flat without facial tubercle and with a weakly prominent mouth edge. Face with white semi-erect hairs. Height of gena is about a third of the length of its white erect hairs. The frontal ratio DBE / DBO is 1.85 – 2.08 (mean 1.96). Frons mainly with white erect hairs but anteriorly near lunule and at most the posterior third in front of ocelli with black erect hairs. Lunule shiny black. Antennal fossa not separated by a medial extension of the lunule. Antenna brownish black. Maximum length of basoflagellomere 2.05 – 2.55 (mean 2.25) times as long as its maximum width. Arista bare, apically brownish black and yellowish brown in basal ⅓, about as long as basoflagellomere. THORAX. Scutum and scutellum shiny black with short, pale yellow erect pilosity. Posterior margin of scutellum dorsally with pale yellow erect hairs as long as half the length of scutellum, and ventrally with short white hairs. Pleuron dull black, mainly with grey pollinosity, anepimeron and katepisternum partly shiny and anepisternum anteriorly shiny and posteriorly pollinose. Posterior part of anepisternum and anterior part of anepimeron with pale yellow erect hairs. Dorsal part and ventral corner of katepisternum with white erect hairs. Calypter white with pale yellow margin and white hairs on margin. Halter pale yellow with pale brown base of stem. WING. Completely microtrichose. Membrane with a slightly brownish tinge. Pterostigma yellowish brown. LEGS. Coxa dull black with grey pollinosity. Front and mid coxa with adpressed short white hairs. Hind coxa with erect white hairs. Trochanters black, front and mid trochanter dull with grey pollinosity and hind trochanter shiny. Femora mainly black but apically narrowly yellow. Front and mid femur mainly with semi-erect short pale yellow hairs but posteriorly with pale yellow and apically some black erect hairs about as long as diameter of femur. Hind femur mainly with erect pale yellow hairs somewhat longer than diameter of femur. Tibiae black but apically narrowly yellow and basally length of yellow part varies from a third to half of tibial length. Tibiae with semi-erect white hairs sometimes mixed with some black hairs. Longest hairs on anterior side of hind tibia are about 1.3 times the diameter of the tibia. Basotarsomere of front tarsus dorsally brown and ventrally brownish yellow. Basotarsomere of mid tarsus yellow. Otherwise, front and mid tarsi brown. Hind tarsus dark brown with a long thickened basotarsomere. All tarsi with adpressed pale yellow hairs sometimes mixed with some black hairs. ABDOMEN. Terga shiny black, with predominantly short white erect hairs, interspersed with various amounts of black hairs. Posterior margins of terga 2 – 3 broadly with short black erect hairs. Anterior margins of terga 3 – 4 broadly with short black erect hairs. Anterior corner of tergum 2 laterally with some long white hairs. Terga 2 – 3 at least twice as wide as long, and tergum 4 often somewhat less than twice as wide as long. Ratio T 4 WL is 1.03 – 1.17 (mean 1.14) (measured as in Fig. 1). Sterna shiny brown, but sternum 1 dull black with grey pollinosity. Sternum 2 with long white erect hairs. Sterna 3 – 5 with white erect hairs, but adpressed on posterior half of sternum 4.	en	Haarto, Antti, Ståhls, Gunilla (2026): The Finnish species of Pipizella Rondani, 1856 (Diptera, Syrphidae), with descriptions of the female sex of Pipizella certa Violovitsh, 1981 and Pipizella obscura van Steenis & Lucas, 2011. European Journal of Taxonomy 1066: 1-21, DOI: 10.5852/ejt.2026.1066.3290, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3290/14505
BE0387A2FFD0D746FDAEFA77FD957786.taxon	diagnosis	Differential diagnosis The female of P. viduata is on average slightly longer (mean 6.78 mm) than that of P. obscura (Supp. file 2). The longest hairs on the anterior side of the hind tibia are about 1.4 times as long as the diameter of tibia, whereas in P. obscura this ratio is about 1.3. The distinct difference between females of Pipizella obscura and P. viduata is the shape of tergum 4. In Pipizella viduata tergum 4 is short and its width at the posterior margin is broad, whereas in P. obscura tergum 4 is long and its width at the posterior margin is narrow (Fig. 6). Thus, the ratio T 4 WL is not overlapping between these species. The mean of the ratio T 4 WL is 1.41 (range 1.33 – 1.54) in P. viduata and 1.14 (range 1.03 – 1.17) in P. obscura (Supp. file 2). Almost all P. viduata specimens could be separated from P. obscura using the shape of tergum 4. The males of these species can be identified by the characteristic features of the male genitalia. Pipizella obscura has a narrow, basally broadest, inner median flange of the hypandrium, whereas the inner median flange is broad (with broadest point medially) in P. viduata. The post-anal hood is apically almost straight in P. obscura (Figs 8 C and 9 C), whereas it is apically rounded in P. viduata (Fig. 10 C).	en	Haarto, Antti, Ståhls, Gunilla (2026): The Finnish species of Pipizella Rondani, 1856 (Diptera, Syrphidae), with descriptions of the female sex of Pipizella certa Violovitsh, 1981 and Pipizella obscura van Steenis & Lucas, 2011. European Journal of Taxonomy 1066: 1-21, DOI: 10.5852/ejt.2026.1066.3290, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3290/14505
BE0387A2FFD0D746FDAEFA77FD957786.taxon	distribution	Distribution. Finland (Fig. 14 B), Sweden.	en	Haarto, Antti, Ståhls, Gunilla (2026): The Finnish species of Pipizella Rondani, 1856 (Diptera, Syrphidae), with descriptions of the female sex of Pipizella certa Violovitsh, 1981 and Pipizella obscura van Steenis & Lucas, 2011. European Journal of Taxonomy 1066: 1-21, DOI: 10.5852/ejt.2026.1066.3290, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3290/14505
BE0387A2FFD5D747FF02FA74FE077424.taxon	discussion	Observations of one additional Pipizella species, Pipizella virens (Fabricius, 1805), are known from the neighbouring countries to Finland. The species is reported from Sweden (SLU 2024, GBIF 2024) and from Estonia (GBIF 2024), and it thus appears possible to find P. virens also from Finland. Both sexes of P. virens have the longest hairs on the anterior side of the hind tibia which is up to twice as long as wide, whereas the Pipizella species known from Finland have the longest hairs on the anterior side of the hind tibia at most 1.5 times as wide as the tibia. In the male genitalia the lateral view of the surstylus of P. virens male shows a long narrow apical part and the lower gonocercus is shaped as a bifid plate (T-shaped) (Verlinden 1999: 20) which differentiates it from the Pipizella species known from Finland in which these structures are different (Figs 7 – 10; Haarto & Kerppola 2007; Bartsch et al. 2009; van Steenis & Lucas 2011; Bot & Van de Meutter 2023). Molecular study The final COI barcode data matrix comprised 24 COI barcodes of Pipizella specimens in total, of which 16 were newly generated for this study (Table 1). The morphological identifications of the unknown female sexes were supported by the generated DNA barcodes, which linked the included male and female samples of the focal species Pipizella certa, P. obscura and P. viduata in independent clusters as visualized in the Neighbor-Joining tree (Fig. 13). The uncorrected pairwise COI barcode sequence divergences between Pipizella obscura and P. viduata is 0.16 %, between P. certa and P. viduata it ranges between 1.3 – 1.7 %, and between P. obscura and P. certa between 1.2 – 1.9 %.	en	Haarto, Antti, Ståhls, Gunilla (2026): The Finnish species of Pipizella Rondani, 1856 (Diptera, Syrphidae), with descriptions of the female sex of Pipizella certa Violovitsh, 1981 and Pipizella obscura van Steenis & Lucas, 2011. European Journal of Taxonomy 1066: 1-21, DOI: 10.5852/ejt.2026.1066.3290, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3290/14505
