identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
FA16C5BE26EC510CBC4A857827D0D5E8.text	FA16C5BE26EC510CBC4A857827D0D5E8.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Plesioaxymyia imprevista Polevoi 2025	<div><p>Plesioaxymyia imprevista Polevoi sp. nov.</p><p>Figs 2 A – C, 3 A – C</p><p>Specimens examined.</p><p>Holotype. Russia • ♀; Karelia, Paanajarvi National Park, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=30.555&amp;materialsCitation.latitude=66.246" title="Search Plazi for locations around (long 30.555/lat 66.246)">Vartolambina</a>; 66.246°N, 30.555°E; 80 m a. s. l.; 1–27 Jun. 2021; A. Protasova leg.; Malaise trap; GenBank: accession numbers PV 036313, PV 036316, PV 036319, PV 036317, PV 035246, PV 037681; ZISP, INS_DIP_0001011 .</p><p>Differential diagnosis.</p><p>Medium-sized, dark brown species (Fig. 2 A); wings hyaline with dark elongated pterostigma, covering apical half of vein R 1; legs yellowish-brown with darkened tarsi, femora and tibiae darkened apically. Similar to Plesioaxymyia vespertina, from which it is distinguished by details of female terminalia: sternite 8 with smoothly rounded dorsoapical margin (forming somewhat protruding dorsoapical corner in P. vespertina) and completely reduced basal segment of cerci (distinct in P. vespertina).</p><p>Description.</p><p>Head. Head dark brown. Face sunken, clypeus convex, mouthparts brown. Palpus brown, 5 - segmented, with short (almost hidden) first segment and broadened third segment. Compound eye densely covered with short ommatrichia; divided by fine groove into upper and lower hemispheres of unequal size and with deep triangular excision opposite antennal base (Fig. 2 B). Three ocelli arranged in equilateral triangle, placed on elevated tubercle. Frons with a few brownish hairs above antennal bases and between ocellar triangle and compound eye. Posterior part of head with numerous brownish hairs. Antenna 16 - segmented, brown; pedicel yellowish apically; middle flagellomeres about twice as wide as long.</p><p>Thorax. Mesonotum dark brown, thinly dusted, lacking any larger setae but covered with tiny yellowish hairs; a pair of narrow transverse shiny patches present along prescutal suture (Fig. 2 B); prescutum yellowish laterally. Scutellum yellowish-brown, strongly convex, with short hairs along posterior margin. Pleura brown.</p><p>Wing. Wing length 4.08 mm. Wing hyaline with light brownish tinge (Fig. 2 C); brown elongated pterostigma occupies apical half of R 1. Costa hardly produced beyond R 4 + 5. Sc curved into costa proximally to Rs; Sc-r reduced. Rs with kink; R 2 + 3 forked well beyond apex of R 1, R 2 deviates in slightly obtuse angle. Crossvein r-m perpendicular to R 4 + 5. M 1 + 2 branching slightly before apex of R 1; section of M-stem distal to r-m about as long as M 1, longer than M 2 and about twice as long as its section proximal to r-m. M 4 straight; CuA distinctly sinuous. CuP short, scarcely reaching beyond posteromedial angle of wing. Anal lobe well-developed. Macrotrichia on wing veins not visible. Halter brown.</p><p>Legs. Coxa, trochanters, femora and tibiae yellowish-brown; all femora and tibiae darkened apically; tarsi brownish. Hind tibia slightly curved in middle, with brush of bristly hairs posteroapically. Ratio of basitarsus to tibia: bt 1: t 1 – 0.45, bt 2: t 2 – 0.43, bt 3: t 3 – 0.30. Tibial spurs not developed.</p><p>Abdomen. Abdomen brown. Tergites 1–7 with sparse hairs posteriorly. Terminalia (Fig. 3) brown. Tergite 8 approximately one-third length of sternite 8, rounded and setose apically; sternite 8 lengthened, tapered apically, with sparse short hairs. Cercus one-segmented; basal segment not developed; apical segment about 4 times longer than wide, bearing ca. 10 setae.</p><p>Etymology.</p><p>The species epithet is from the Latin imprevistus (unexpected, unforeseen), stressing that the finding of this species in Northwest Russia was a real surprise.</p><p>Distribution.</p><p>The species is currently known only from the type locality in Russian Karelia (Northwest Russia).</p><p>Biology.</p><p>The adult was collected with a Malaise trap set in Vaccinium myrtillus type pine- and spruce-dominated forest. The larval biology is unknown.</p></div>	https://treatment.plazi.org/id/FA16C5BE26EC510CBC4A857827D0D5E8	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Polevoi, Alexei;Burdíková, Nikola;Ševčík, Jan	Polevoi, Alexei, Burdíková, Nikola, Ševčík, Jan (2025): New species of Plesioaxymyia Sinclair (Diptera, Axymyiidae) from the Palaearctic Region, including an updated molecular phylogeny of the family. ZooKeys 1236: 297-315, DOI: 10.3897/zookeys.1236.148218
