identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
03EB879BFFBEFFF1FEA66B438668FB83.text	03EB879BFFBEFFF1FEA66B438668FB83.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Tydeus croceus C. L. KOCH 1836	<div><p>Tydeus croceus (L.) sensu Oudemans (1928b)</p> <p>(Figures 2A, 3A, 4A, 5A, 6A, 7, 8)</p> <p>The oldest illustration of the species was given by Oudemans (1914, p 122, Figures 7–10 in Plate XII). However, as already mentioned by Thor (1933, p 17), Oudemans’ (1914) species was not the real croceus. Indeed, the species illustrated in his Plate XII (surprisingly entitled ‘‘ T. foliorum ’’) exhibits distinctive spatulate setae at the posterior tip of the abdomen.</p> <p>As already commented upon, the identity of the species was established by Oudemans (1928b, p 377) who collected the mite from the same tree genus (Salix) as Linnaeus. The description was, however, issued later by Thor (1932) who reproduced Oudemans’ original drawings (his Figures 1 –20). The first 11 figures were again published by Thor (1933, p 17 Figures 18–28). The description is nevertheless imprecise on several points, e.g. the leg chaetotaxy. Consequently, the species was listed as an ‘‘ancient species’’ not identifiable by Kaźmierski (1998). Therefore, a detailed description is given, illustrated by Figures 7, 8.</p> <p>Prodorsum</p> <p>Prodorsum recurved with two eyespots (Figure 8A).</p> <p>Leg chaetotaxy in adults</p> <p>I(8-4-3-3-1), II(6-2-2-3-0), III(5-2-1-1-1), and IV(5-2-1-1-0). Oudemans’ figures (Figures 1, 2 in Thor 1932; Figures 18, 19 in Thor 1933) contain thus three errors: the famulus is not drawn, the trochanteral III is omitted, and tarsi III and IV bear only four setae. Eupathidia on tarsus I: ft 99, (tc) and (p). Solenidiotaxy: 2. The leg phanerotaxy (eupathidia included) does not vary from the deutonymph to the adult.</p> <p>Palp chaetotaxy</p> <p>Ad-DN(6-2-2) plus a tarsal solenidion and with a double terminal eupathidium on the distal segment (Figure 8E). Stylet-like movable digit (Figure 8F).</p> <p>Epimeral formula</p> <p>Ad-DN(3-1-4-2). Vertition and bisynthesis has been observed on podosoma IV. Coxal organ simple and oval (Figure 6A).</p> <p>Genital chaetotaxy</p> <p>Ad(0,4-6-4), TN(4-4) and DN(1-2). In some adults, there are only five pairs of genitals (as in Oudemans’ drawings) but the presence of a single pair of genitals has been observed in all deutonymphs. Extended striation pattern (Figure 8C).</p> <p>Specimens from willow and rye are similar in morphology and size. Dorsal setae (except the trichobothridia) are not smooth as in Oudemans’ drawings, but serrate (Figure 8B). Long posterior setae are particularly fragile and, once broken, may give the impression that they are truncate.</p> <p>Legs ornamented with ventral semi-annular thickenings similar to those described in some Ereynetidae (Figure 8D). Such ornamentation was not drawn by Oudemans and has not been reported in other tydeid species. Dorsal setae on genua tapered (Figure 8G).</p> <p>Length of the idiosoma (in Mm)</p> <p>Specimens from willow: undetermined adult: 416; ♀: 346; DN: 269¡12 (n 55). Specimens from rye, „: 380¡36 (n 52); ♀: 335¡2 (n 52); TN: 286; DN: 263¡12 (n 56). Usually, males are smaller than females. NS(vi)525–27, NS(ep)532.</p></div> 	https://treatment.plazi.org/id/03EB879BFFBEFFF1FEA66B438668FB83	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.		Plazi	André, Henri M.	André, Henri M. (2005): In search of the true Tydeus (Acari, Tydeidae). Journal of Natural History 39 (13): 975-1001, DOI: 10.1080/00222930400002838, URL: http://dx.doi.org/10.1080/00222930400002838
03EB879BFFA0FFF0FE3B6C0C812DFEDB.text	03EB879BFFA0FFF0FE3B6C0C812DFEDB.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Tydeus cruciatus Koch 1838	<div><p>Tydeus cruciatus Koch</p> <p>(Figures 2B, 3B, 4B, 5B, 6D)</p> <p>The species was also listed as an ‘‘ancient species’’ not identifiable by Kaźmierski (1998). The single illustration of the species was given by Koch (1838). Although they both provided further description of the species, neither Oudemans (1929b), nor Thor (1931, 1933) published additional figures.</p> <p>Leg chaetotaxy</p> <p>I(8-4-3-3-1), II(6-2-2-3-0), III(5-2-1-2-1), and IV(5-2-1-1-0). Eupathidia on tarsus I: ft 99, (tc) and (p). Solenidiotaxy: 2.</p> <p>Genital chaetotaxy</p> <p>(0,?-6-4). Extended striation pattern (Figure 2B). Palp and chelicera apparently similar to those of croceus.</p> <p>The single female in Oudemans’ collection exhibits the typical Tydeus striation pattern defined by Baker (1965). Striation unique in having circular striae around (vi) similar to those usually observed around the trichobothridia (Figure 3B). Dorsal setae smooth (Figure 5B). The species is probably small as the idiosoma length was only 235 M m, but this measure is only indicative due to the state of the specimen. The total length published by Oudemans (1929b, p 477) was 247 M m. Koch (1838) had already indicated that the species was exceedingly small (‘‘ungemein klein’’). NS(vi)522, NS(ep)519.</p> </div>	https://treatment.plazi.org/id/03EB879BFFA0FFF0FE3B6C0C812DFEDB	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.		Plazi	André, Henri M.	André, Henri M. (2005): In search of the true Tydeus (Acari, Tydeidae). Journal of Natural History 39 (13): 975-1001, DOI: 10.1080/00222930400002838, URL: http://dx.doi.org/10.1080/00222930400002838
03EB879BFFA1FFF2FE2E69D784EDFE0C.text	03EB879BFFA1FFF2FE2E69D784EDFE0C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Tydeus demeyeri , Oudemans 1928	<div><p>Tydeus demeyeri Oudemans</p> <p>The only illustration of the species (Figure 29 in Thor 1933) is a dorsal view of the gnathosoma. In his original description, Oudemans (1929b, p 478) wrote: ‘‘Seta verticales internae achter het niveau der pseudostigmata verplaatst’’ (‘‘Verticales internae setae displaced behind the level of pseudostigmata’’). This particular position of prodorsal setae vi (p 1 in Baker’s terminology) behind the trichobothridia means that the prodorsum is procurved, which implies that demeyeri belongs neither to Tydeinae, nor to Tydeidae as recently redefined by André and Fain (2000). The presence of at least 10 (probably 12) setae on tarsus I confirms that demeyeri is not a Tydeidae. Due to the bad state of the specimen, it was not possible to get further information on the species.</p> <p>Tydeus spathulatus Oudemans</p> <p>(Figures 2C, 3D, 4C, 4B, 5D, 6B, 9, 10)</p> <p>The species was described by Oudemans (1928b, p 380) and synonymized with caudatus by Thor (1933, p 38). Oudemans (1937, p 925) owned that his spathulatus was a junior synonym of Dugès’ caudatus as proposed by Thor. However, no illustration of the species has ever been published. The major feature reported by Oudemans (1928b) is the presence of six spatulate (‘‘langspatelvormig’’) posterior setae.</p> <p>The three slides in Oudeman’s collection contain different species. The description of this section refers to the type specimens that Oudemans purchased from Berlese and collected from Padova in Italy. Specimens differ from Oudemans’ description in two points. The posterior opisthosomal setae are not spatulate but rather lanceolate. Depending on the orientation, they sometimes seem to be clavate, but never spatulate (see Figure 3D, E). The number of lanceolate setae amounts to five pairs (Figure 10A), and not three as written by Oudemans. Other dorsal opisthosomal setae are serrate.</p> <p>Leg chaetotaxy in adults</p> <p>I(8-4-3-3-1), II(6-2-2-2-0), III(5-2-1-1-1), and IV(5-2-1-1-0). Eupathidia on tarsus I: ft 99, (tc) and (p). Solenidiotaxy: 2. Dorsal setae on genua I and II tapered (Figure 10B), on genua III and IV blunt (Figure 10C, D)</p> <p>Palp and chelicera</p> <p>Palp and chelicera apparently similar to those of croceus.</p> <p>Genital chaetotaxy</p> <p>(0,?-6-4). Compact striation pattern (Figure 2C). The species exhibits the typical Tydeus striation pattern defined by Baker (1965) as well as two eyespots on the prodorsum.</p> <p>Length of the idiosoma (in Mm)</p> <p>Length is 368¡16 (n 54) in females and 331¡7 (n 53) in males. NS(vi)526, NS(ep)536.</p> <p>Designation of a lectotype</p> <p>As explained in the Material and Methods section, the 12 specimens of this species were remounted separately. Therefore, I hereby designate as lectotype the female remounted in the slide with the original label handwritten by Oudemans. The other slides with new labels contain the paralectotypes.</p></div> 	https://treatment.plazi.org/id/03EB879BFFA1FFF2FE2E69D784EDFE0C	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.		Plazi	André, Henri M.	André, Henri M. (2005): In search of the true Tydeus (Acari, Tydeidae). Journal of Natural History 39 (13): 975-1001, DOI: 10.1080/00222930400002838, URL: http://dx.doi.org/10.1080/00222930400002838
03EB879BFFA3FFF2FE2E69848158FBD6.text	03EB879BFFA3FFF2FE2E69848158FBD6.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Tydeus nieuwkerkeni André 2005	<div><p>Tydeus nieuwkerkeni n. sp.</p> <p>(Figures 2D, 3C, 4C, 5C, 6C, 11)</p> <p>This description refers to the two other slides of Oudemans’ collection bearing the label ‘‘ Tydeus spathulatus’’, that contain specimens from Renkum in the Netherlands. The habitus, leg chaetotaxy and other generic characters are similar to those of Tydeus spathulatus. However, the species is undescribed and is characterized by three pairs of short, spatulate setae (Figure 11A). These setae are shorter than homologous setae in spathulatus (compare Figure 5C and E). Dorsal setae on genua are similar to those of spathulatus but more serrate (Figure 11C, D).</p> <p>The length of the idiosoma (in M m) is 344¡74 (n 53) in females. NS(vi)527, NS(ep)518.</p> <p>Another specimen of the species was collected in Samrée (Belgium), from the bark of Fraxinus excelsior along a road.</p> <p>Designation of types</p> <p>The five specimens from the slide with the data ‘‘Castanea sativa, Renkum bij Arnhem’’ were remounted separately and form the type-series. The slide with the original label contains the female holotype, the other four slides with new labels contain paratypes.</p></div> 	https://treatment.plazi.org/id/03EB879BFFA3FFF2FE2E69848158FBD6	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.		Plazi	André, Henri M.	André, Henri M. (2005): In search of the true Tydeus (Acari, Tydeidae). Journal of Natural History 39 (13): 975-1001, DOI: 10.1080/00222930400002838, URL: http://dx.doi.org/10.1080/00222930400002838
