A new species of the genus Spiritiops Lugo-Ortiz & McCafferty (Ephemeroptera, Baetidae) from the Pantepui biogeographical province

The genus Spiritiops was described by Lugo-Ortiz & McCafferty in 1998. Since then, only the type species, S. silvudus, was reported from different countries, such as Brazil, French Guiana, Surinam and Venezuela. In the last years, various international speleological expedition explored summits of some table mountains called tepuis in Guyana region in south-eastern Venezuela. Here we describe a new species of the genus Spiritiops, found at three tepuis (Auyán-tepui, Churí-tepui and Mt. Roraima) during above mentioned speleological expeditions.Fil: Nieto Peñalver, María Carolina. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Instituto de Biodiversidad Neotropical; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; ArgentinaFil: Derka, Tomáš. Comenius University; Eslovaqui

Checklist, distribution, diversity, and rarity of mayflies (Ephemeroptera) in Slovakia

Despite the essential role of mayflies (Ephemeroptera) in freshwater ecosystems and their long-term use in research and routine biomonitoring in the Carpathian and Pannonian ecoregions, their distribution data are fragmentary and outdated. All published and unpublished data on mayflies from Slovakia was gathered and a database of > 15,000 species records from 2206 localities built with the aims (i) to critically revise available data and assess the completeness of the species inventory, (ii) to identify hotspots of species diversity, and (iii) to provide a benchmark for assessment of species rarity and conservation status in the region. After the critical revision of the data covering more than 100 years, the occurrence of 109 mayfly species in Slovakia was confirmed. The species inventory appears to be nearly complete, as evidenced by the rarefaction curve and a nonparametric species richness estimator. The highest mayfly gamma diversity was recorded below 500 m a.s.l. and in streams of the fifth order, which can be considered hotspots of mayfly diversity in the region. Six species were last recorded before 1990 and thus can be considered extinct in Slovakia. Twenty-nine species could be classified as very rare, with their occurrence frequency decreasing with increasing altitude and most of them being restricted to large lowland rivers and stagnant water habitats in their floodplains. In conclusion, our study provides comprehensive data on key freshwater bioindicators and suggests increasing conservation priorities, especially in lowland river floodplains occupied by several very rare mayfly species

Anticipating where are unknown aquatic insects in Europe to improve biodiversity conservation

Aim: Understanding biodiversity patterns is crucial for prioritizing future conservation efforts and reducing the current rates of biodiversity loss. However, a large proportion of species remain undescribed (i.e. unknown biodiversity), hindering our ability to conduct this task. This phenomenon, known as the ‘Linnean shortfall’, is especially relevant in highly diverse, yet endangered, taxonomic groups, such as insects. Here we explore the distributions of recently described freshwater insect species in Europe to (1) infer the potential location of unknown biodiversity hotspots and (2) determine the variables that can anticipate the distribution of unknown biodiversity. Location: The European continent, including western Russia, Cyprus and Turkey. Methods: Georeferenced information of all sites where new aquatic insect species were described across Europe from 2000 to 2020 was compiled. In order to understand the observed spatial patterns in richness of recently described species, spatial units were defined (level 6 of HydroBASINS) and associated with a combination of a set of socioeconomic, environmental and sampling effort descriptors. A zero-inflated Poisson regression approach was used to model the richness of newly described species within each spatial unit. Results: Nine hundred and sixty-six recently described species were found: 398 Diptera, 362 Trichoptera, 105 Coleoptera, 66 Plecoptera, 28 Ephemeroptera, 3 Neuroptera, 2 Lepidoptera and 2 Odonata. The Mediterranean Basin was the region with the highest number of recently described species (74%). The richness of recently described species per spatial unit across Europe was highest at mid-elevation areas (between 400 and 1000 m), latitudes between 40 and 50° and in areas with yearly average precipitation levels of 500–1000 mm, a medium intensity of sampling effort and low population density. The percentage of protected areas in each study unit was not significantly related to the richness of recently described species. In fact, 70% of the species were found outside protected areas. Main conclusions: The results highlight the urgent need to concentrate conservation efforts in freshwater ecosystems located at mid-altitude areas and out of protected areas across the Mediterranean Basin. The highest number of newly described species in those areas indicates that further monitoring efforts are required to ensure the aquatic biodiversity is adequately known and managed within a context of growing human impacts in freshwater ecosystems.Generalitat de Catalunya 2017SGR1643Ministerio de Ciencia e Innovación TED2021-130328B-I00, RYC2019-027446-

Setting Out and Measurement of Track Geometric Parameters for the Purposes of Reconstruction in Krnov City

Import 22/07/2015V předložené práci je zpracováno vytyčení a zaměření prostorové polohy koleje pro účely rekonstrukce kolejí a výhybek na vlečce v Krnově. První část se věnuje prověření polohy a výšky bodů navržené vytyčovací sítě. Následně je proveden rozbor přesnosti měření a popsán postup vytyčení podrobných bodů. V další části je zpracováno kontrolní měření nově zřízených konstrukcí. Závěr práce se zabývá geodetickou částí dokumentace skutečného provedení stavby.This thesis treats of setting out and measurment of position of track for the reconstruction of tracks and switches on a siding in Krnov. The first part describes a verification of position and height of designed set of points. Following is an analysis of the precision of measurment and is described process setting out of position points. The next section is elaborated control measurements newly established rail structures. Finally of the thesis there is processed the surveying parts of the documentation of actual construction.544 - Institut geodézie a důlního měřictvívýborn

Measurement of Track Geometric Parameters in 21.875 to 22.325 km Suchdol n.O. - Budišov n.B. Track

Import 26/06/2013V předložené práci je zpracováno zajištění prostorové polohy koleje v km 21,875 až 22,325 železniční trati Suchdol nad Odrou – Budišov nad Budišovkou. První část se věnuje popisu bodového pole včetně nezbytného doplnění jeho bodů. Následně je popsán postup měření polohopisu a výškopisu zajišťovacích značek. V další části je proveden výpočet souřadnic a výšek zajišťovacích značek. Na závěr je zpracována dokumentace zajištění prostorové polohy koleje podle předepsaných pravidel.This thesis treats of the track geometry marking in 21.875 to 22.325 km Suchdol nad Odrou – Budišov nad Budišovkou track. The first part describes set of points including the necessary complement its points. Following describes the procedure of measurement planimetric and altimetry permanent markers. The next section is performed a calculate the coordinates and heights of permanent markers. Finally of the thesis there is processed the documentation of track geometry marking according to prescribed rules.Prezenční544 - Institut geodézie a důlního měřictvívýborn

A new species of the genus Spiritiops Lugo-Ortiz & McCafferty (Ephemeroptera, Baetidae) from the Pantepui biogeographical province

The genus Spiritiops was described by Lugo-Ortiz & McCafferty in 1998. Since then, only the type species, S. silvudus, was reported from different countries, such as Brazil, French Guiana, Surinam and Venezuela. In the last years, various international speleological expedition explored summits of some table mountains called tepuis in Guyana region in south-eastern Venezuela. Here we describe a new species of the genus Spiritiops, found at three tepuis (Auyán-tepui, Churí-tepui and Mt. Roraima) during above mentioned speleological expeditions.Fil: Nieto Peñalver, María Carolina. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Instituto de Biodiversidad Neotropical; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; ArgentinaFil: Derka, Tomáš. Comenius University; Eslovaqui

Parakari

Key to nymphs of Parakari n. g. 1 Posterior margin of abdominal terga with pointed spines (Fig. 12); labrum (Fig. 4) dorsally with one subapical setae near midline; labium (Fig. 9) with segment II of palpi with a thin distomedial projection.................... P. auyanensis n. sp. Posterior margin of abdominal terga with rounded spines (Fig. 27); labrum (Fig. 19 a) dorsally with two subapical setae near midline, one short and one long; labium (Fig. 24 a) with segment II of palpi with a broad distomedial projection................................................................................................ P. churiensis n. sp.Published as part of Nieto, Carolina & Derka, Tomáš, 2011, Parakari a New Genus of the Family Baetidae (Insecta: Ephemeroptera) from Guyana Highlands, pp. 47-59 in Zootaxa 3032 on page 49, DOI: 10.5281/zenodo.20677

Parakari churiensis Nieto & Derka, 2011, new species

Parakari churiensis new species Nieto & Derka (Figs. 2 –3, 15– 30) Male imago (Figs. 15–16). Length: body: 6.4–6.5 mm; fore wings: 6.9 –7.0 mm. Head yellowish brown, antennae yellowish brown. Eyes (Fig. 16): dorsal portion of turbinate eyes orange brown, stalk brownish, ventral portion black, bases of ocelli black. Thorax brownish (Fig. 15), mesoscutum (MS) pale brown, submesoscutum (SMS) brownish. Metascutellum brownish, medial projection pale brown. Pleurae yellowish brown. Prosternum pale yellow, meso and metasterna yellowish brown. Legs pale yellow. Wings hyaline (Fig. 17), costal and subcostal spaces of fore wings translucent. Abdomen pale yellow except segments VII–VIII brownish. Genitalia (Fig. 18) yellowish. Cerci broken-off and lost. Female Imago. Length: body: 5.7 –6.0 mm; fore wings: 6.7–6.8 mm. Head reddish brown, antennae reddish brown; compound eyes blackish. Thorax: pronotum reddish brown, mesoscutum yellowish, submesoscutum brownish, metascutellum yellowish brown. Pleurae and sterna yellowish. Legs yellowish. Wings hyaline, costal and subcostal space of fore wings translucent. Abdomen: segments I–VIII reddish brown, segments IX–X pale yellow, sterna pale yellow. Cerci broken off and lost. Nymph (Figs. 2–3). Length: body: 5.2–5.5 mm; cerci: 2.5–2.6 mm; terminal filament: 2.3–2.4 mm. Head yellowish brown. Eyes: compound eyes orange brown, ocelli black. Antennae yellowish brown. Mouthparts (Figs. 19–24): Labrum (Fig. 19 a) subquadrangulate, dorsally with two subapical setae near midline, one short and one long. Left mandible (Fig. 20) with incisor positioned at obtuse angle to mola area, thumb of mola area transverse to anterior margin. Right mandible (Figs. 21 a–b) with incisors elongated, prostheca bifid basally. Hypopharynx (Fig. 22) with lingua subequal in length to superlinguae. Maxillae (Fig. 23 a) with crown with two long pectinated setae, palpi longer than galea-lacinia, segment I longer than segment II. Labium (Fig. 24 a) with paraglossae with two nonpectinated blade-like setae (Fig. 24 b), segment II of palpi with a broad distomedial projection, segment III slightly longer than wide. Thorax yellowish brown, fore wing pads yellowish. Metanotum brownish. Legs (Fig. 25): femora yellowish, tibiae, tarsi and claws yellowish brown. Tarsal claws (Fig. 26) with 10–11 denticles. Pleurae yellowish brown, sterna pale yellow. Abdomen segments I–VI, IX–X (Fig. 2) yellowish, segments VII–VIII brownish. Posterior margin of terga with rounded spines (Fig. 27). Sterna pale yellow. Gills whitish (Fig. 28), rounded, subequal in length of each tergum, main trachea pigmented. Paraprocts as in Fig. 29. Caudal filaments yellowish (Fig. 30). Variation. some nymphs present the abdominal segments I–X yellowish (Fig. 3). Etymology. Churí-tepui is the name of the tepui from the Chimantá Massif where this species was collected. Diagnosis. Parakari churiensis n. sp. can be distinguished from the other species of the genus by the following combination of characters. In the nymph: 1) labrum (Fig. 19 a) dorsally with two subapical setae near midline, one short and one long; 2) left mandible (Fig. 20) with incisors positioned at obtuse angle to mola area; 3) right mandible with incisors elongated (Fig. 21 a), prostheca bifid basally (Fig. 21 b); 4) hypopharynx (Fig. 22) with lingua subequal in length to superlinguae; 5) maxillary palpi (Fig. 23 a) longer than galea-lacinia; 6) labial palpi (Fig. 24 a) with segment II with a broad distomedial projection; 7) posterior margin of abdominal terga with rounded spines (Fig. 27). In the adult, 1) thorax with medioscutum pale brown, submedioscutum brownish. Material. Holotype: male nymph: VENEZUELA, Bolívar Province, Chimantá Massif, Churí-tepui, Cueva Charles Brewer (the end), 17 / I/ 2009. T. Derka col. Paratypes: 34 nymphs the same locality and collector. 15 nymphs: spring stream below waterfall at Río Olinka originating in Cueva Juliana, 2300 m.a.s.l., Loc.8, 20/ I/ 2009, T. Derka col. 91 nymphs, 3 male and 12 female imagos (dried and damaged from spider web) and 2 male and 3 female subimagos: Quebrada Lila, a stream at the Plateau above Cueva Charles Brewer, 2400 m.a.s.l., Loc. 6, 26/ I/ 2009, T. Derka col. 132 nymphs, 10 female and 8 male subimagos (reared), 1 male imago (reared): Cueva Charles Brewer (entrance), 2300 m.a.s.l., 15 / I/ 2009, T. Derka col. 62 nymphs and 2 male imagos (reared): Quebrada Lila, a stream at the Plateau above Cueva Charles Brewer, 2400 m.a.s.l., Loc. 6, 21/ I/ 2009, T. Derka col. 52 nymphs: stream above Pozo Capuchino, 2300 m.a.s.l., Loc. 7, 16/ I/ 2009, T. Derka. 1 nymph: Río Olinka, stream above waterfall above Cueva Juliana, 2300 m.a.s.l., Loc. 11, 19/ I/ 2009, T. Derka col. 3 female imagos (dried and damaged from spider web), 7 male and 7 female subimagos: Canyon below Cueva Charles Brewer, 28 / I/ 2009, T. Derka col. 1 nymph: springs of Western river, Loc. 13, 23/ I/ 2009, T. Derka col. 55 nymphs: river below Cueva Juliana, ca. 2300 m.a.s.l., Loc. 9, 20/ I/ 2009, T. Derka col. 1 nymph: Cueva Colibrí, 26 / I/ 2009. Holotype and 63 paratypes are housed at IML; 20 paratypes housed at MIZA; other paratypes are housed at FNS. Biology. All material was collected in streams at tepuis plateaus (Figs. 31, 33 – 35). The only exception was material from the stream below Salto Angel (Fig. 32), the highest waterfall on the Earth (979 m), which drops down directly from the plateau of Auyán tepui. The material was collected from different types of streams, from spring streams to bigger mountain rivers. All streams are typically oligotrophic, with low conductivity from 9 to 18 μS.cm- 2 and acid water with pH ranging between 3.75 and 4.58 (Table 1). Streams have mostly bedrock bottom with only minor accumulations of sands, gravels, stones and detritus. Due to geological conditions, nymphs must be able to withstand high current velocities and fluctuations without possibility to hide into hyporheal. Nymphs inhabit environments with wide range of temperatures from oligostenothermal cave streams with stable temperatures around 13–14 ºC to wide and shallow streams with high daily thermal fluctuations with maximum temperatures exceeding more then 21 ºC during sunny days. Subimagos were observed flying one hour before sunset. Potential predators of nymphs are dragonfly and dobsonfly larvae. Curiously, some nymphs of P. churiensis were found in bladder tramps of Utricularia humboldtii (T.D. pers. observ.).Published as part of Nieto, Carolina & Derka, Tomáš, 2011, Parakari a New Genus of the Family Baetidae (Insecta: Ephemeroptera) from Guyana Highlands, pp. 47-59 in Zootaxa 3032 on pages 52-58, DOI: 10.5281/zenodo.20677

Parakari Nieto & Derka, 2011, new genus

Parakari new genus Nieto & Derka Male Imago (Figs. 15–18). Length: body: 6.4–6.5 mm; fore wings: 6.9 –7.0 mm. Turbinate eyes oval, height of stalk ½ eye diameter (Fig. 16). Legs I–II broken-off, leg III with tibia 1.6 times the length of femur, tarsi 1 / 3 times the length of tibia; tarsi with 4 segments decreasing in length distally. Fore wings (Fig. 17) with paired long marginal intercalary veins; hind wings lacking. Genitalia with forceps three segmented, segment II with a constriction segment III elongate and long (Fig. 18). Female Imago. Length: body: 5.7 –6.0 mm; fore wings: 6.7–6.8 mm. Fore wings with paired marginal intercalary veins; hind wings lacking. Nymph. Length of body: 4.5–5.5 mm. Cerci ½ the length of body, terminal filament subequal in length to cerci. Antennae partially broken-off and lost. Mouthparts: Labrum with setae dorsally, anterior margin with 6–7 spine-like setae near midline and a row of bipectinate setae laterally (Fig. 19 b). Mandibles (Figs. 5 –6, 20– 21) with incisors fused apically and without setae between prostheca and mola. Left mandible (Figs. 5, 20) with prostheca robust with 12–13 denticles. Right mandible (Figs. 6, 21 a–b) with incisors positioned in obtuse angle to mola area; prostheca bifid and pectinate. Hypopharynx (Figs. 7, 22) with lingua with a tuft of setae. Maxillae with four denticles, first and fourth denticles with a pointed projection apically (Figs. 23 b–c), palpi with two segments, segment II with a concavity and a hole apically (Fig. 23 d). Labium (Figs. 9, 24) with glossae shorter than paraglossae and with a row of setae, paraglossae rectangular, with three rows of long robust and pectinate setae; palpi three segmented, segment II with a strong distomedial projection, segment III rounded. Legs (Figs. 10, 25). Femora with a row of spines on dorsal edge and a pair of spines apically. Tarsal claws (Figs. 11, 26) with a row of denticles, subapical denticle larger than the others. Hind wing pads absent. Abdomen with gills on segments II–VII. Paraprocts with spines apically (Figs. 14, 29). Caudal filaments with spines every two segments. Terminal filament subequal in length to cerci; internal margin of cerci and lateral margins of terminal filament with long setae. Etymology. Parakari is a local indian name of a fermented alcoholic beverage manufactured from cassava by Pemon Indians. This ethnic group inhabits the Gran Sabana region in SE Venezuela, where this genus was collected. We proposed this genus name in order to acknowledge the cultural heritage of Pemon people. The gender is masculine. Type species. Parakari churiensis n. sp. Diagnosis. This genus can be distinguished from the other genera of the family by the following combination of characters: In the male imago: 1) hind wings absent; 2) fore wings (Fig. 17) with paired long marginal intercalary veins; 3) genitalia with segment II of forceps with a constriction, segment III elongated (Fig. 18). In the nymph: 1) gills on abdominal segments I absent; 2) hind wing pads absent; 3) tarsal claws (Figs. 11, 26) with a row of denticles, subapical denticle larger than the others; 4) labrum with anterior margin with 6–7 spine-like setae near midline and a row of bipectinate setae laterally (Fig. 19 b); 5) mandibles (Figs. 5–6) with incisors fused apically and without setae between prostheca and mola; 6) right mandible (Figs. 6, 21 a–b) with incisors positioned in obtuse angle to mola area; prostheca bifid and pectinate; 7) hypopharynx (Figs. 7, 22) with lingua with a tuft of setae; 8) maxillae with four denticles, first and fourth denticles with a pointed projection apically (Figs. 23 b–c), segment II of palpi with a concavity and a hole apically (Fig. 23 d); 9) labium (Figs. 9, 24) with paraglossae rectangular and with three rows of long robust and pectinate setae, segment II of palpi with a strong distomedial projection. In the key of nymphs of South American genera of Baetidae (Domínguez et al. 2006, pag. 58) the couplets 19– 21 are modified to include Parakari n. g. as follow: 19 (17) Gills present on abdominal segments II–VII................................................................ 20 - Gills present on abdominal segments I–VII................................................................ 22 20 (19) Segment II of labial palpi with distomedial projection (Domínguez et al. 2006, Fig. 9 F)............................. 21 - Segment II of labial palpi without lateral projection (Domínguez et al. 2006, Fig. 69 F)........................ Zelusia 21 (20) Mandibles without setae between prostheca and mola (Figs. 5–6); right prostheca bifid (Fig. 6); segment II of maxillary palpi with a concavity and a hole apically (Fig. 23 d).................................................... Parakari n. g. - Mandibles with setae between prostheca and mola; right prostheca robust with denticles apically; segment II of maxillary palpi not as above............................................................................... Americabaetis Regarding phylogenetic relationship of Parakari, we included this genus into the matrix proposed by Nieto (2010). The analysis recovered Parakari in the Node R (Fig. 73, Nieto 2010), within Tupiara + Acerpenna + Americabaetis supported by two synapomorphies: paraglossae with three rows of setae and segment III of forceps elongated. Americabaetis and Parakari were recovered as sister groups by gill I and hind wings absent.Published as part of Nieto, Carolina & Derka, Tomáš, 2011, Parakari a New Genus of the Family Baetidae (Insecta: Ephemeroptera) from Guyana Highlands, pp. 47-59 in Zootaxa 3032 on pages 48-49, DOI: 10.5281/zenodo.20677

Hydrolutos breweri sp. n., a new aquatic Lutosini species (Orthoptera: Anostostomatidae) from Churí-tepui (Chimantá Massif, Venezuela)

Derka, Tomáš, Fedor, Peter (2010): Hydrolutos breweri sp. n., a new aquatic Lutosini species (Orthoptera: Anostostomatidae) from Churí-tepui (Chimantá Massif, Venezuela). Zootaxa 2653: 51-59, DOI: 10.5281/zenodo.27620