taxonID	type	description	language	source
6AC0446D25465280BEF5608E3D400428.taxon	type_taxon	Type species. Bryobia pritchardi Rimando, 1962: 9.	en	Mirza, Jawwad Hassan, Elgoni, Nasreldeen Ahmed, Kamran, Muhammad, Alatawi, Fahad Jaber (2025): Mites of the genus Bryobia (Acari, Tetranychidae): taxonomic notes on some species and a diagnostic key to the world species. ZooKeys 1239: 51-73, DOI: 10.3897/zookeys.1239.149111
6AC0446D25465280BEF5608E3D400428.taxon	diagnosis	Diagnosis (based on females). As defined by Mirza et al. (2024). Key to the 22 species of the subgenus Allobia Species groups definition is based on Mirza et al. 2024. Notes on the species of the subgenus Allobia The subgenus Allobia includes 28 species (Mirza et al. 2024) although only 22 valid species are included in the key above. Among the remaining six species, five species described by Meyer (1974, 1987) have pad-like true claws on leg I. Mirza et al. (2024) provided a detailed discussion on how this character state contradicts the diagnosis of the Bryobiini tribe. In the present study, the sixth species B. (A.) orycustodia Meyer (in Meyer & Ueckermann, 1989) from the species group pritchardi is also considered among those five species of Meyer in which leg I true claws are also pad-like. These six species were not added to the diagnostic key for the time being as this requires an update of the diagnoses of all tribes of subfamily Bryobiinae based on the shape of leg I true claws. Species group abbatielloi There are only two species existing in the species group abbatielloi, B. (A.) abbatielloi (Smiley & Baker, 1995) and B. (A.) querci Hatzinikolis & Panou, 1997 (Mirza et al. 2024). The species B. (A.) querci was distinguished by the presence of f 2 setae in line with other dorsocentral setae c 1, d 1, and e 1 (Hatzinikolis and Panou 1997). This position of seta f 2 is incorrectly described in this species, based on the nomenclature of Lindquist (1985). Hence, the seta f 2 (outer sacral) described by Hatzinikolis and Panou (1997) is actually seta f 1 (inner sacral) and vice versa.	en	Mirza, Jawwad Hassan, Elgoni, Nasreldeen Ahmed, Kamran, Muhammad, Alatawi, Fahad Jaber (2025): Mites of the genus Bryobia (Acari, Tetranychidae): taxonomic notes on some species and a diagnostic key to the world species. ZooKeys 1239: 51-73, DOI: 10.3897/zookeys.1239.149111
3549F32993975DF8BFD9A38FC2C2D12F.taxon	type_taxon	Type species. Bryobia rubrioculus (Scheuten) 1857: 104.	en	Mirza, Jawwad Hassan, Elgoni, Nasreldeen Ahmed, Kamran, Muhammad, Alatawi, Fahad Jaber (2025): Mites of the genus Bryobia (Acari, Tetranychidae): taxonomic notes on some species and a diagnostic key to the world species. ZooKeys 1239: 51-73, DOI: 10.3897/zookeys.1239.149111
3549F32993975DF8BFD9A38FC2C2D12F.taxon	diagnosis	Diagnosis (based on females). As defined by Mirza et al. (2024). Key to the 51 species of the genus Lyobia Species groups definition is based on Mirza et al. 2024. Notes on the species of the subgenus Lyobia The subgenus Lyobia includes 58 species (Mirza et al. 2024) but the key to only 51 species is provided above. The species B. (L.) ericoides Meyer, 1974, belonging to the species group eurotiae, is excluded from the key due to leg I true claw morphology. The status of the remaining six species, all belonging to the species group rubrioculus, are discussed below. Species group eurotiae The two species in this species group B. (L.) eurotiae Mitrofanov, 1973 and B. (L.) pamirica Mitrofanov, 1973, are morphologically similar and share the type host plant (Eurotia sp.), type locality (Tadjikistan), and date of collection (23 July 1967). These two species share most morphological characteristics, including similar body length and width, lacking propodosomal lateral lobes, setae v 2 longer than v 1, slender setiform setae, length of leg I equal to body length, number of tenant hairs on leg empodia I-IV, and most of the leg chaetotaxy. The morphological characters which differentiate B. (L.) eurotiae from B. (L.) pamirica include state of propodosomal lobes (completely absent vs inner lobes joined from the middle, forming a cone), dorsal setal tubercles (indistinct vs distinct), leg chaetotaxy of femora I-III (9 - 7 - 4 vs 8 - 6 - 3), genua I and II (8 - 5 vs 4 - 4), and tibia II (9 vs 6), respectively. The differences in leg chaetotaxy mentioned above should be re-examined and could be considered as variations. The original description of B. (L.) eurotiae provides leg chaetotaxy in which tibia I has 24 setae. It appears that the setal count of tibia I was missed, and the setal counts for tarsus I were provided. It could be assumed that there are 24 setae on tarsus I, which was also described for B. (L.) pamirica because the chaetotaxy of tibiae II-IV is similar in both species. Similarly, the setae f 1 were described to be present sublaterally in B. (L.) pamirica, while they are illustrated as aligned with dorsocentral setae c 1. Hence, the setae f 1 are present centrally or subcentrally in B. (L.) pamirica, similar to B. (L.) eurotiae. Although there is evidence for the possible synonymy of these two species, it is important to re-examine the type specimens to reach a definitive conclusion. Species group sarothamni There are seven species in this species group (Mirza et al. 2024). The morphology of propodosomal lobes has been described with variations. For instance, B. (L.) sarothamni Geijskes, 1939, was originally described from the Netherlands, with the presence of four propodosomal lobes in the form of tubercles (Geijskes 1939). Pritchard and Baker (1955) distinguished the English population of B. (L.) sarothamni with a complete absence of “ cephalic projections ”. Baker and Tuttle (1994) reported the presence of the propodosomal projection, where outer ones were as broad as long, and 1 / 3 as long as the inner pair. This situation is similar to that in the praetiosa species complex (in the subgenus Bryobia (B. )). It is recommended to approach the species in this species group with extreme caution, and morphological variations should be completely understood before describing new taxa. Species group rubrioculus There are 48 species included in this species group (Mirza et al. 2024). The species B. (L.) cinereae Auger & Migeon, 2014 was placed in the species group sarothamni (Mirza et al. 2024). However, in the present study, it is included in the species group rubrioculus due to the marginal position of sacral f 1 and f 2 setae. This species is morphologically close to B. (L.) belliloci Auger, Arabuli & Migeon, 2015; however, the morphological differences are debatable. It has been stated that setae d 1 clearly surpass the bases of e 1 in B. (L.) belliloci (illustrated as just passing) while setae d 1 just reach the base of setae e 1 in B. (L.) cinereae (Auger and Migeon 2014). There are other morphological characters which were used to differentiate B. (L.) belliloci from B. (L.) cinereae including the depth of the inner lobe incisions (but illustrated as exactly same for both species), peritremal distal enlargement length (both anastomosing but length has 7 μm difference), length of internal seta l’ 1 on femur I, lengths and shapes of coxal setae 1 b and 1 c (discrepancies in the description and illustrations of B. (L.) belliloci). These characters may reflect variations in the morphologies, especially when both species have the same host plant, Genista cinerae, and are both reported from France (Auger and Migeon 2014; Auger et al. 2015). The species B. (L.) belliloci is excluded from the key, and perhaps further studies may suggest it as a junior synonym of B. (L.) cinereae. The four species B. (L.) tiliae (Oudemans, 1928; Germany), B. (L.) rubrioculus (Scheuten, 1857; Germany), B. (L.) lonicerae Reck, 1956 (Georgia), and B (L.) ulmophila Reck, 1947 (Georgia), are very similar to each other in all morphological aspects including leg morphology. The species B. (L.) rubrioculus has been described and illustrated from different regions of the world and number of species have been synonymized under it (Migeon and Dorkeld 2025). Frommer and Jorgensen (1972) studied the morphological and behavioral variations with host specificity of B. (L.) rubrioculus and distinctly separated this species from B. (L.) praetiosa. The two species B. (L.) lonicerae and B. (L.) ulmophila were morphologically compared with B. (L.) redikorzevi that is considered a synonym of B. (L.) rubrioculus by Frommer and Jorgenson (1972). Wainstein (1960) considered B. (L.) ulmophila as synonym of B. (L.) redikorzevi. The species B. (L.) tiliae was originally described as a type species of the genus Schmiedleinia Oudemans, 1928, based on the larval specimens collected from the host plant Tiliae sp. in Germany (Oudemans 1928). The genus was later synonymized with the genus Bryobia, and the species tiliae was considered as the larvae of B. praetiosa (Oudemans 1930). Bagdasarian (1957) described the species B. (L.) tiliae from Armenia on the same host plant, Tiliae sp. It was later considered a synonym of the species described by Oudemans (1928) (Wainstein 1960). In that synonymy, B. (L.) tiliae was considered to be morphologically close to B. (L.) ulmophila and B. (L.) redikorzevi (Bagdasarian 1957) but distinguished based on the number of setae on leg femur I. Both of the latter two species have been considered as a synonym of B. (L.) rubrioculus. The leg chaetotaxy alone would not be sufficient to confidently validate the identity of the species. In light of this debate, it would be difficult to reach any definitive conclusion regarding the validity of these three species, and their synonymy with B. (L.) rubrioculus requires further investigation. Eyndhoven and Vacante (1985) described 13 species belonging to the berlesei species group, eight of which were described for the first time. Among them, five species B. (L.) pandayi Eyndhoven & Vacante, 1985, B. (L.) pyrenaica Eyndhoven & Vacante, 1985, B. (L.) pelerentsi Eyndhoven & Vacante, 1985, B. (L.) dikmenensis Eyndhoven & Vacante, 1985, and B. (L.) provincialis Eyndhoven & Vacante, 1985, have variable morphological characters. The three species B. (L.) pandayi, B. (L.) pyrenaica, and B. (L.) pelerentsi were considered close to each to other and the differential character designated as “ Each species has its own host plant ” (Eyndhoven and Vacante 1985: 400). In all other morphological aspects, these three species resemble each other, and it is difficult to differentiate them. The remarks for these species were stated as “ For general remarks see Bryobia pandayi ”. It is important to mention that a species having its own host plant does not necessitate its validity. The species B. (L.) pandayi was reported from Calicotome spinosa. The same host plant (Calicotome sp.) harbors almost seven Bryobia taxa (Migeon and Dorkeld 2025). Interestingly, B. (L.) pelerentsi is also reported from Calicotome sp. (Eyndhoven and Vacante 1985). Hence, with this argument, the synonymy of B. (L.) pyrenaica and B. (L.) pelerentsi with B. (L.) pandayi appears undeniable. Similarly, both species, B. (L.) dikmenensis and B. (L.) provincialis are reported from the same host plant (Genistus sp.) and were morphologically designated close to each other by Eyndhoven and Vacante (1985). The only morphological difference described was that the second and third dorsocentrals were smaller than the other dorsal body setae in B. (L.) dikmenensis, while of similar length in B. (L.) provincialis. However, this contradicts what has been described for these setae based on 14 specimens (Eyndhoven and Vacante 1985). This places the status of these species as doubtful, and there is an urgent need for re-analysis of the morphological characters of these species.	en	Mirza, Jawwad Hassan, Elgoni, Nasreldeen Ahmed, Kamran, Muhammad, Alatawi, Fahad Jaber (2025): Mites of the genus Bryobia (Acari, Tetranychidae): taxonomic notes on some species and a diagnostic key to the world species. ZooKeys 1239: 51-73, DOI: 10.3897/zookeys.1239.149111
51B400EBF78B53668FEA2C54E6C7D9C5.taxon	type_taxon	Type species. Bryobia praetiosa Koch, 1836: 8.	en	Mirza, Jawwad Hassan, Elgoni, Nasreldeen Ahmed, Kamran, Muhammad, Alatawi, Fahad Jaber (2025): Mites of the genus Bryobia (Acari, Tetranychidae): taxonomic notes on some species and a diagnostic key to the world species. ZooKeys 1239: 51-73, DOI: 10.3897/zookeys.1239.149111
51B400EBF78B53668FEA2C54E6C7D9C5.taxon	diagnosis	Diagnosis (based on females). As defined by Mirza et al. (2024). Key to the 43 species of the subgenus Bryobia Species groups definition is based on Mirza et al. 2024 Notes on the species of the subgenus Bryobia The subgenus Bryobia includes 53 species (Mirza et al. 2024), although only 43 species are included in the key above. Among the remaining ten, two species belong to the species group praetiosa, B. geigeriae Meyer, 1974, and B. karooensis Meyer, 1974, which are excluded from the key due to ambiguity in the leg I true claw morphology as debated by Mirza et al. (2024). The two species B. (B.) calida Karg, 1985 and B. (B.) lagodechiana Reck, 1953 could not be assigned to any species group due to insufficient information available on the position of the inner sacral seta f 1. The status of the remaining six species excluded from the above key is discussed below. Species group praetiosa The species B. (B.) montana Mitrofanov, 1973 was originally described from Tadjikistan on the host plant Astragalus sp., while the species B. (B.) nitrariae He & Tan, 1993 was reported from China on the host plant Nitraria sibirica. These two species are similar in all morphological characters, including leg chaetotaxy. The only difference is in the number of setae on tarsus I for both species, 20 vs 18, respectively. The descriptions of both species provided leg setal counts as the total number, including sensory and tactile setae. It is important to note that He and Tan (1993) differentiated B. (B.) nitrariae from B. (B.) tadjikistanica Livschits & Mitrofanov, 1968, which is also morphologically close to B. (B.) montana. The two species, B. (B.) tadjikistanica and B. (B.) montana, share the same type locality, Tadjikistan. There are also minor differences between B. (B.) nitrariae and B. (B.) tadjikistanica in the shape of their spermathecae and true claws. The two species B. (B.) montana and B. (B.) nitrariae key out near each other. Examining the type specimens would help to clarify their statuses. The three species, B. (B.) graminum (Schrank, 1781), B. (B.) monticola Wang, 1985, and B. (B.) neopraetiosa Meyer, 1974 are also morphologically close. They have been reported from Germany (on Poaceae sp.), China (on Poaceae sp.), and South Africa (on multiple hosts), respectively. The leg chaetotaxy for B. (B.) neopraetiosa is neither described nor illustrated in detail (except for femur I, genua I and II, and tibia I), while that of B. (B.) graminum and B. (B.) monticola has few variations on leg tarsal segments. Based on the available descriptions, re-descriptions, and illustrations, it could be suggested that B. (B.) monticola and B. (B.) neopraetiosa should be synonymized with B. (B.) graminum. Similarly, the species B. (B.) exserta Wang, 1985 was reported from China on Artemisia sp. and was distinguished from B. (B.) praetiosa Koch, 1836 based on minor morphological variations, including body length, propodosomal lobe lengths, leg genu I segment comparative lengths. Bryobia (B.) exserta also morphologically resembles the three species discussed above. It is impossible to decide the synonymy of B. (B.) exserta, whether it should be synonymized with B. (B.) graminum or B. (B.) praetiosa. The species B. (B.) praetiosa is the type species of the genus Bryobia, while B. (B.) graminum, one of the oldest species described, was moved to the genus Bryobia by Oudemans (1929). Mitrofanov et al. (1987) synonymized B. (B.) praetiosa with B. (B.) graminum, but previously, Pritchard and Baker (1955) considered synonymizing B. (B.) praetiosa with B. (B.) graminum and suggested further detailed studies. However, these two species still remain valid (Migeon and Dorkeld 2025). Two species, B. (B.) qinghaiensis Ma & Yuan, 1981 and B. (B.) yunnanensis Ma & Yuan, 1981, are described from China, from the Palearctic and Oriental regions, respectively. They are morphologically similar to each other, apart from some setal variations on leg tarsal and tibial segments, and were differentiated from B. (B.) praetiosa and B. (B.) qinghaiensis, respectively, based on a few minor differences. These species resemble B. (B.) praetiosa, the type of the genus. Note that the concept of a praetiosa species complex still exists, and there are a considerable numbers of populations described under the name of praetiosa, or otherwise, from different localities of the world. Each of those descriptions and illustrations provided various degrees of chaetotaxies and body measurements, which further complicate the true identification of B. (B.) praetiosa. Pritchard and Baker (1955) provided an excellent debate on the overall situation of the praetiosa complex. It appears that this complex and its synonyms will continue to grow. The species B. (B.) batrae Baker & Tuttle, 1994 was described from the USA, occurring on the host plant Stellaria media. This species cannot be added to the key as it was very briefly described and illustrated. Baker and Tuttle (1994) also did not compare it with any related species. The species B. (B.) japonica Ehara & Yamada, 1968, also cannot be included as it was also very briefly described. The authors did compare it with B. (B.) sarothamni and B. (B.) tadjikistanica based on the absence of dorsal lobes. These two species belong to the subgenus Allobia (Bryobia) (Mirza et al. 2024). Tuttle and Baker (1976) described B. (B.) neoribis with a duplex on both leg tarsi III and IV. However, their 1994 original description of the species on Acer negundo from Utah, USA stated an absence of duplex on leg tarsus IV. Based on the current designations, the latter species / population belongs to the subgenus Lyobia (Bryobia). The authors further stated that this species was similar to the European B. (B.) ribis Thomas, 1896. The latter is poorly described and has been suggested as a synonym of B. (B.) praetiosa (Pritchard and Baker 1955). This population of B. (B.) neoribis should be reidentified based on type material examination to reach a valid species designation. The two species, B. (B.) neoribis sensu Tuttle and Baker (1976) and B. (B.) ribis are morphologically close. Mathys (1957) provided detailed morphological analysis and bioecological aspects of the species B. (B.) ribis and other Bryobia species found in the French part of Switzerland. The species B. (B.) neoribis was differentiated from B. (B.) ribis based on the number of setae on the femur I (24 vs 16) and variations in body and setal lengths. Tuttle and Baker (1976) did not provide a comprehensive description of the species, preventing detailed comparison and validation with other Bryobia species. Similarly, there is no detailed description and illustration of B. (B.) ribis. Mathys (1957) stated that complementary morphological differences could be found in the larval stage of B. (B.) ribis. This raises doubts over the validity of B. (B.) neoribis as only the female stage was briefly described. It would require a comprehensive set of specimens from the type locality to validate the status of the B. (B.) neoribis. For the time being, both species are excluded from the diagnostic key. The species B. (B.) xizangensis Wang, 1985 was described from China from an unknown host plant. This species was originally differentiated from B. (L.) longisetis Reck, 1947 and was described with one or two pairs of tenent hairs on leg empodium I. Based on the findings of the present study, this species could be morphologically close to B. (B.) hengduanensis Wang & Cui, 1991 due to one pair of tenent hairs present on empodium I, but differentiated based on the length of dorsal body hairs, short vs long, crossing the bases of setae next in line, respectively. Considering the two pairs of tenent hairs on empodium I, B. (B.) xizangensis is similar to B. (B.) ziziphorae Strunkova & Mitrofanov, 1983, but is easily differentiated based on the development of propodosomal lobes, strongly developed and deep incision between the inner and outer lobes vs. weakly developed with small lobes, respectively.	en	Mirza, Jawwad Hassan, Elgoni, Nasreldeen Ahmed, Kamran, Muhammad, Alatawi, Fahad Jaber (2025): Mites of the genus Bryobia (Acari, Tetranychidae): taxonomic notes on some species and a diagnostic key to the world species. ZooKeys 1239: 51-73, DOI: 10.3897/zookeys.1239.149111
AD5067DB4D7D55858173D3BFC143E719.taxon	type_taxon	Type species. Bryobia praetiosa Koch, 1836: 8.	en	Mirza, Jawwad Hassan, Elgoni, Nasreldeen Ahmed, Kamran, Muhammad, Alatawi, Fahad Jaber (2025): Mites of the genus Bryobia (Acari, Tetranychidae): taxonomic notes on some species and a diagnostic key to the world species. ZooKeys 1239: 51-73, DOI: 10.3897/zookeys.1239.149111
AD5067DB4D7D55858173D3BFC143E719.taxon	diagnosis	Diagnosis (based on females). As defined by Arabuli et al. (2019) and Mirza et al. (2024). There are four species, B. apsheronica Khalilova, 1953, B. desertorum Hassan, Afifi & Nawar, 1986, B. ribis Thomas, 1896, and B. weyerensis Packard, 1889, not included in any subgenus or species group due to inadequate and insufficient literature, as also reported by Mirza et al. (2024). In the very brief descriptive statements of B. weyerensis, the original author provided the two completely different generic names to which this species may belong, “ Bryiobia? (or Penthaleus) ” (Packard 1889). The former three species require re-description based on type examination to be added to the respective subgenus and species group.	en	Mirza, Jawwad Hassan, Elgoni, Nasreldeen Ahmed, Kamran, Muhammad, Alatawi, Fahad Jaber (2025): Mites of the genus Bryobia (Acari, Tetranychidae): taxonomic notes on some species and a diagnostic key to the world species. ZooKeys 1239: 51-73, DOI: 10.3897/zookeys.1239.149111
06A1320E5E3F5193B1D7B358FBD12A75.taxon	diagnosis	Diagnosis. True claws uncinate and empodium pad-like.	en	Mirza, Jawwad Hassan, Elgoni, Nasreldeen Ahmed, Kamran, Muhammad, Alatawi, Fahad Jaber (2025): Mites of the genus Bryobia (Acari, Tetranychidae): taxonomic notes on some species and a diagnostic key to the world species. ZooKeys 1239: 51-73, DOI: 10.3897/zookeys.1239.149111
