308,999 research outputs found
Maxiniini Makarova & Marchenko & Lindquist 2021, tribe n.
No full textMaxiniini tribe n. Type genus: Maxinia Lindquist & Makarova, 2012. Diagnosis. Adult dorsal shield entire, robust, broad, without lateral incisions. Idiosomal setae simple. Female with sternal shield consolidated with endopodal sclerites between coxae I–II, and with free endopodal fragments between coxae II–III and free strongly developed strips between coxae III–IV; male sternitigenital shield fused with all endopodal sclerites beside coxae II–IV. Female with an apomorphically expansive ventrianal shield encompassing metapodal platelets anterolaterally and including setae JV 1 anteriorly. Male with sternitigenital shield abutting an expansive ventrianal shield that incorporates metapodal platelets. Peritreme slightly shortened, its margins smooth. Subcapitulum with narrow deutosternal groove; hypostomatic setae hp -1 and hp -3 not elongated and whip-like. Palp trochanter setae similar in size. Genu III with only seven setae (lacking pv -1). Male spermatodactyl short, tube-like. Tarsus I with claws. None of setae on tarsi II to IV conspicuously differentiated by shape or size. Genera included: Maxinia.Published as part of Makarova, Olga L., Marchenko, Irina I. & Lindquist, Evert E., 2021, Distribution, habitats, and redescription of the rare mite species Iphidonopsis sculptus Gwiazdowicz, 2004 (Mesostigmata: Ascidae), pp. 448-464 in Zootaxa 4952 (3) on page 451, DOI: 10.11646/zootaxa.4952.3.2, http://zenodo.org/record/469053
Tête-à-tête avec Carol Weiss et Evert Lindquist sur l'élaboration des politiques et la recherche
No full textVersion anglaise disponible dans la Bibliothèque numérique du CRDI: In conversation : Carol Weiss and Evert Lindquist on policymaking and researc
In conversation : Carol Weiss and Evert Lindquist on policymaking and research
No full textFrench version available in IDRC Digital Library: Tête-à-tête avec Carol Weiss et Evert Lindquist sur l'élaboration des politiques et la recherch
An homage to Prof. Dr. Gerd Alberti (1943-2016)
No full textDi Palma, A., Krantz, G.W., Lindquist, E.E., Norton, R.A. (2017): An homage to Prof. Dr. Gerd Alberti (1943-2016). Acarologia 57 (2): 459-461, DOI: 10.1051/acarologia/20174169, URL: http://dx.doi.org/10.1051/acarologia/2017416
Arctoseius haarlovi Lindquist & Makarova 2011
No full textArctoseius haarlovi Lindquist & Makarova , 2011 Arctoseius haarlovi Lindquist, 1964 a: 103; 1964 b: 3895; Farrier & Hennessey, 1993: 24; Makarova, 2000 c: 914; 2000 d: S 139; 2000 e: 1046; 2000 f: S 144 (nomen nudum). Arctoseius haarlovi Lindquist & Makarova, 2011 a: 935. Arctoseius haarlovi.— Lindquist & Makarova, 2011 b: 1066; Makarova & Lindquist, 2013: 23. TYPE DEPOSITORY: Canadian National Collection of Insects, Arachnids and Nematodes, Ottawa, Canada. TYPE LOCALITY AND HABITAT: Spitsbergen, Advent Bay, near Longyearbyen, Norway, dry substrate sparsely covered by Carex subspathacea [Plantae: Cyperaceae]. NOTES: (a) this species was described in an unpublished thesis (Lindquist, 1964 a: 103), which was not produced in numerous identical and durable copies (ICZN Article 8.1.3.1). The mention of this name in Lindquist (1964 b: 3895) was not accompanied by a description (ICZN Article 13.1); (b) specimens mentioned as Arctoseius laterincisus Thor by Weis-Fogh (1948: 257), Evans (1955: 288), Chant (1963: 249) and Karg (1971 b: 268, 1993: 267) were re-identified as A. haarlovi by Lindquist & Makarova (2011 a: 935).Published as part of De Moraes, Gilberto J., Britto, Erika P. J., Mineiro, Jefferson L. De C. & Halliday, Bruce, 2016, Catalogue of the mite families Ascidae Voigts & Oudemans, Blattisociidae Garman and Melicharidae Hirschmann (Acari: Mesostigmata), pp. 1-299 in Zootaxa 4112 (1) on page 80, DOI: 10.11646/zootaxa.4112.1.1, http://zenodo.org/record/39947
Lasioseius quinisetosus Lindquist & Karg
No full textLasioseius quinisetosus Lindquist & Karg (Figs 35–43) Lasioseius quinisetosus Lindquist & Karg in Christian & Karg, 2006: 128 (replacement name for Cheiroseius inguinalis Karg, 1977: 299, junior homonym of Lasioseius inguinalis Karg, 1976: 533). Cheiroseius inguinalis Karg, 1977: 299. not Lasioseius inguinalis Karg, 1976: 533. Diagnosis: The adult female of this species resembles those of several species of Lasioseius described from the Southern Hemisphere (Africa, Australia, South America) in having the metapodal plates coalesced into one enlarged, subtriangular, reticulated plate on either side. It further resembles that of L. uluguruensis van Aswegen & Loots, 1969, in distinction to other species including L. inguinalis Karg, 1976, in having only 4 (instead of 5 or 6) pairs of opisthogastric setae plus the 3 circum-anal setae on the ventri-anal shield, leaving setae ZV 3, JV 4, JV 5 on soft cuticle flanking that shield. It differs from L. uluguruensis and others in lacking discrete platelets on the pre-sternal region and in having nearly all of the dorsal shield setae smooth, attenuate (only j 1 and r 3 are tricarinate) and relatively long, most of them clearly longer than distance to insertion of next seta in series. Adult female. Dorsal idiosoma (Fig. 35): Dorsal shield 580–588 µm long, 425–465 µm wide at midlength level of setae s 6, embossed-reticulate over entire surface, lacking puncta posteriorly between setae Z 4 -J 5; with 22 pairs of setae (j 1 -j 6, z 1 -z 6, s 1 -s 6, r 2 -r 5) on anterior region and 15 pairs of setae (J 1 -J 5, Z 1 -Z 5, S 1 -S 5) on posterior region. Setae j 1 (40–43 µm) and r 3 (50–52 µm) lanceolate-tricarinate, all other dorsal shield setae slender, attenuate, most of them relatively long (58–88 µm), clearly longer than distance to insertions of next seta in series, though some of them, especially z 1, s 1, s 2, r 2, J 5 (20–32 µm) and to lesser extent z 2, z 5 (35–42 µm), shorter; seta r 4 ca. 0.6 as long as s 4 neighboring it medially; insertion of seta z 5 displaced slightly anterior to level of j 5. Lateral soft cuticle with 12 to 15 pairs of setae, including 7 marginal pairs (r 6, R 1 -R 6) and 0 to 3 submarginal pairs (UR) below R 4 -R 6, flanked by 5 pairs of opisthogastric setae ventrolaterally (see below), these setae attenuate, of moderate length. Ve nt r a l idiosoma (Fig. 36): Tritosternal laciniae free for ca. 80 µm of their length (115–120 µm). Presternal area strongly lineate, not microtuberculate, and containing first pair of sternal setae. Sternal shield densely punctate over most of surface, lineate-striate along lateral margins, lacking anteromedian patch of reticula, with second and third pairs of sternal setae and 2 pairs of poroids. Metasternal plates subquadrate, with fourth pair of sternal setae and third pair of poroids. Endopodal strips well formed alongside coxae III–IV. Genital shield truncated posteriorly, slightly widened behind genital seta, coarsely punctate over much of surface, slightly reticulate posteriorly; paragenital pores in soft cuticle well posterior to level of genital seta. Post-genital platelets consolidated into one transverse strip. Metapodal plates undivided, enlarged, reticulate, subtriangular, longer (85–97 µm) than wide (67–75 µm). Ventri-anal shield much wider (338–342 µm) than long (200–220 µm), with anterior margin slightly concave medially, embossed-reticulate over entire surface, lacking field of puncta in anal region; shield with 4 pairs of opisthogastric setae (JV 1 -JV 3, ZV 2) plus 3 circum-anal setae of which para - anals subequally as long as post-anal seta (25–30 µm); JV 3 (55–57 µm) clearly longest of setae on shield. Ventral soft cuticle around ventri-anal shield with setae ZV 1 flanking shield anteriorly and with 8 to 11 pairs of setae flanking shield postero-laterally, including 5 pairs of opisthogastric setae (ZV 3 -ZV 5, JV 4, JV 5) flanked by marginals R 4 -R 6 and 0-3 pairs of submarginals; other than short ZV 1 (20 µm), all these setae moderately long, similarly attenuated, and individually inserted on sclerotized tubercles. Exopodal plate a wide continuous strip alongside coxae II–IV. Peritrematal shield and peritreme (Figs 35–36): Peritrematal shields fused to dorsal shield at level of setae r 2 and contiguous with exopodal shields alongside coxae II–IV; peritremes extending anteriorly to bases of setae j 1. Spermathecal apparatus (Fig. 37): Difficult to discern, apparently with a small (length 8 µm, width 8 µm) but well sclerotized cup-shaped calyx; embolus and minor duct barely discernible. Gnathosoma (Figs 38–41): Anterior margin of tectum with 3 weakly formed, irregularly denticulate prongs, the central one deeply subdivided in some specimens. Middle segment of cheliceral shaft elongate, much as in species of Cheiroseius (length ca. 190 µm, including the ca. 50 µm long fixed digit). Fixed cheliceral digit with short pilus dentilis, 2 offset subapical teeth beside a deep notch (to accomodate apical hook of movable digit) anterior to a row of ca. 15 minute teeth inserted on a convex ridge (ca. 11–13 µm in length) that apposes dentition of movable digit (much as in species of Cheiroseius); movable digit (length 48–52 µm) tridentate, the central tooth larger; lateral hyaline rim along paraxial face of digit weakly serrated at level of base of movable digit. Deutosternum with 7 connected rows of fine denticles; anterior 5 rows each with ca. 25 denticles; 6 th and 7 th rows each with ca. 30 denticles. Hypostomatic setae h 1 slightly thicker, longer (48–52 µm) than h 2 (38–45 µm); internal mala slightly longer than corniculus, with lateral margin finely fringed. Palptrochanter with internal seta attenuated (35–40 µm), much longer than external seta (25 µm). Legs (Figs 42, 43): Leg I subequally as long as dorsal shield, leg IV slightly (1.1–1.2) longer (550–610 and 625–675 µm long, respectively); pretarsus of leg I long, thin (25–27 µm), pretarsi of legs II–III (15 µm) and IV (17–18 µm) shorter; claws of tarsus I smaller than those of other tarsi; tarsi II–IV with apical setal processes nearly half as long as pretarsi; pretarsi II–IV with thin attenuate paradactyli projecting well beyond apices of claws (15–17 µm on II–III, 20–25 µm on IV). Genua and tibiae of legs I-II-III-IV with 13 - 11 - 9 - 9 and 13 - 10 - 8-10 setae, respectively, without deficiencies. Tarsus II with seta pl - 2 elongated (55–60 µm) but short of reaching base of pretarsus (Fig. 43); tarsi III–IV without elongated setae. Tarsus IV (250–255 µm) ca. 1.4 as long as tarsi II–III (175–180 µm); leg IV setae pd - 3 on basitarsus and pd - 2 on telotarsus subequal in length (38–45 µm), ca. 0.5 as long as tibia (80–90 µm). All leg setae smooth. Adult male: Unknown. Material examined: Piracicaba – 3 female, 04.i. 1999, from litter of a patch of secondary forest. Previous records: Originally recorded from nematode probes from two sites in Chile, from substrate amidst grass roots and from algae of small pond (Karg 1977). Remarks: Although described as a species of Cheiroseius, some of the attributes in the original description of Karg (1977) indicate the proper placement of this species in the genus Lasioseius, especially: the tricarinate form of the humeral seta r 3, the position of the para-anal seta beside (rather than behind) the anal opening, the greater length of the post-anal seta relative to the para-anals (generally shorter than the paraanals in Cheiroseius), the enlargement of the metapodal plates (otherwise unknown among the many species of Cheiroseius and other platyseiine genera), and the rounded form of some of the pulvillar elements of tarsi II–IV that are typically acute in platyseiines. The examination by one of us (EEL, 2004) of a paratype female of Cheiroseius inguinalis confirmed the presence of other attributes characteristic of Lasioseius rather than Cheiroseius, including: the lack of flagellate-straplike form of the anterior hypostomatic seta and internal palptrochanter seta; the lack of straplike form of elongated seta pl - 2 on tarsus II and the lack of similar elongation and form of seta ad - 3 on tarsi II–IV, and a leg chaetotaxy fully holotrichous like most Lasioseius and other genera of Blattisociinae, rather than lacking seta v 3 on femora I–II and pv - 1 on genu II, which are definitive losses for genera of Platyseiinae (Lindquist & Evans 1965). When Christian & Karg (2006) transferred Cheiroseius inguinalis Karg into Lasioseius, as Lasioseius inguinalis (Karg 1977), this name became a junior homonym of Lasioseius inguinalis Karg, 1976, which is the name for another, quite distinct species also described from Chile. One of us (EEL, 2004) has examined the holotype of this species also (Figs 44–46). Adult females of this form have similarly enlarged metapodal plates but are distinct as follows: the caudal region of the dorsal shield and anal region of the ventri-anal shield are densely coarsely punctate (puncta not shown in Fig. 44, see fig. 19 c in Karg 1976); the dorsal shield setae are generally shorter and tricarinate-serrate; the sternal shield has a V-shaped patch of reticula anteromedially; the ventri-anal shield bears 6 pairs of opisthogastric setae (not 7 pairs as indicated by Karg, as JV 5 is inserted on a tubercle in soft cuticle beside the incurved postero-lateral margin of the shield) (Fig. 44); the cheliceral digits are smaller and with much different dentition, the fixed digit having 6 coarse, well separated teeth, and the movable digit (length 30 µm) quadridentate (Fig. 45); the legs are shorter, with I and IV shorter than the idiosomal length (which is similar to that of Ch. inguinalis), and with the tarsi markedly shorter (tarsi II–III 110–115 µm, IV 160 µm); the pretarsi of legs II–IV have short paradactyli (Fig. 46). As a result, L. inguinalis (Karg 1977), was replaced by Lasioseius quinisetosus Lindquist & Karg in Christian & Karg, 2006: 128, and that name is used here.Published as part of De, Jeferson L., Lindquist, Evert E. & De, Gilberto J., 2009, Edaphic ascid mites (Acari: Mesostigmata: Ascidae) from the state of São Paulo, Brazil, with description of five new species, pp. 1-32 in Zootaxa 2024 on pages 17-19, DOI: 10.5281/zenodo.18613
Fungiseius Moraza & Lindquist, 2011, new genus
No full textFungiseius new genus (Figs 1–60) Type species: Fungiseius armatus new species Diagnosis. Adults of Fungiseius are distinguished apomorphically from those of other blattisociine genera by the following attributes: dorsal shield with lateral margins bearing a delineated strip extending from setae z 2 to S 5 and bearing some of r -marginal setae anteriorly and the series of S - lateral setae posteriorly; sternal or sternitigenital shield with gland pore at apex of endopodal extensions between legs I and II; female with small ventrianal or anal shield; female with deep postgenital furrow; male and female with deep postanal furrow and lacking opisthogastric setae JV 3; hypostomatic setae hp 2 minute; legs II greatly thickened, and with enlarged, curved, spine-like setae on dorsolateral surfaces of tarsus; genua III and IV with eight and nine setae respectively, lacking pv - 1; tarsus I with one dorsobasal seta pd attenuate, erect; claws on legs I–IV with a basal swelling. Among the genera of Blattisociinae, adults of Fungiseius are strikingly similar to those of another fungus-inhabiting genus, Hoploseius, in having legs II greatly thickened and provided with spine-like setae. In contrast to Fungiseius, leg II of Hoploseius has enlarged spine-like setae on the ventral faces of the femur, genu, tibia and tarsus, and lacks enlarged curved setae on the dorsolateral face of the tarsus. Adults of Hoploseius differ in other apomorphic ways from those of the new genus in having the apical margin of the fixed cheliceral digit with a curved row of small, rasping teeth; females with an expansive ventrianal shield; genu I lacking setae pd - 3 and av - 2, and genua III-IV retaining seta pv - 1, although lacking al - 2. Description. Idiosomal dorsum. ADULT FEMALE AND MALE (Figs 9, 38). Dorsal shield entire, without lateral incisions, well sclerotized and with delineated lateral rim extending from setae z 2 to S 5 and bearing a variable number of s or r setae, and all S 1 -S 5; surrounding soft integument smoothly striate. Dorsal shield with a maximum complement of 37 pairs of setae (Fig. 38), including 22 podonotal (j 1 -j 6, z 1 - z 6, s 1 -s 6, r 2 -r 5) and 15 opisthonotal pairs (J 1 -J 5, Z 1 -Z 5, S 1 -S 5), or with complement reduced to 28 pairs (Fig. 9), including 17 podonotal (j 1 -j 6, z 1, z 2, z 4, z 5, s 1 -s 6, r 2) and 11 opisthonotal pairs (J 5, Z 1 -Z 5, S 1 -S 5); dorsal setae moderately short, smooth, of similar lengths, or with two pairs of posterior setae (Z 4 -Z 5) enlarged and modified. Dorsal shield with complement of 18 pairs of discernible pore-like structures (eight podonotal, ten opisthonotal), of which seven pairs (four podonotal, three opisthonotal) superficially appear secretory (gland pores) and 11 pairs (four podonotal, seven opisthonotal) non-secretory (poroids). Soft surrounding cuticle with five to eight pairs of r -R marginal setae and pair of marginal poroids idRp. Peritrematal plates narrowly uniting with dorsal shield anteriorly at level of setae z 1 or free there (Fig. 11); peritremes well developed, reaching to level between setae s 1 and z 1. Idiosomal venter. ADULT FEMALE (Figs 15, 46). Tritosternum with laciniae free for most of length, their fused bases with a series of denticles or smooth (Figs 5, 42). Ventral shields variably ornamented, well sclerotized. Presternal region ornamented with pair of weakly sclerotized plates consolidated with sternal shield. Sternal shield entire, with strongly developed endopodal extensions between coxae I–II and II–III, that between legs I–II with a gland pore apically where abutting peritrematal/exopodal shield; sternal shield with three pairs of setae and two pairs of lyrifissures; setae st 4 and poroids iv 3 on metasternal plates that are free or narrowly connected to sternal shield (Figs 15, 46). Endopodal strips between coxae III and IV free, well defined. Epigynal shield with its rounded, hyaline anterior margin between legs III abutting or overlapping posterior edge of sternal shield, its posterior margin truncate; setae st 5 on shield’s lateral margins, paragenital poroids iv 5 on soft cuticle; deep postgenital furrow present with small postgenital platelets usually discernible. Opisthosomatic venter with well-developed metapodal platelets, nine pairs of setae (JV 1, JV 2, JV 4, JV 5, ZV 1 -ZV 5), and three pairs of poroids, ivp conspicuous; setae JV 3 absent. Opisthogaster with either small ventrianal shield bearing three pairs of ventral setae (JV 1, JV 2, ZV 2) or oval anal shield, with paranal setae inserted at mid level of anus, and more elongate postanal seta; shield with a pair of gland pores gv 3 on posterolateral margins, and a well-developed cribrum behind level of postanal seta; deep postanal furrow present. Peritrematal shield connecting with exopodal strips behind coxae IV, with two poroids and one gland pore in area behind stigma, and with poroid (ip 1) and two weakly developed gland pores (gp 1, gp 2) along length of peritreme (Fig. 9); exopodal strip continuous alongside peritrematal shield by coxae I– IV, with extensions between bases of coxae I–II, II–III and III–IV. Spermathecal apparatus of phytoseioid-type, but sometimes with minor duct difficult to discern emanating from embolus near base of sclerotized calyx (Figs 18, 47). ADULT MALE (Fig. 37). Form of tritosternum and presternal area as in female. Ventral shields ornamented with reticula, well sclerotized. Sternitigenital shield with five pairs of setae and three pairs of poroids, and with endopodal extensions between coxae I–II, II–III, and partially fused with those between coxae III–IV (Fig. 37). Opisthosomatic venter with one or two pairs of metapodal platelets; soft integument with two or three pairs of setae and three pairs of poroids. Ventrianal shield large, narrowed at level of anal region, with four pairs of opisthogastric setae (JV 1, JV 2, ZV 1, ZV 2) and the three circumanal setae; attributes of circumanal setae, cribrum, and deep postanal furrow as in female; setae JV 3, ZV 3 -ZV 5 absent. Posteriorly, peritrematal shield and peritreme as in female. Gnathosoma. FEMALE AND MALE. Gnathotectum with convex, denticulate anterior margin (Figs 1, 43). Chelicerae large (Fig. 8), or small (Fig. 41), without any conspicuous process along antiaxial or paraxial lateral surfaces basal to the digits; fixed digit with tiny pilus dentilis and row of small teeth along distal half of masticatory surface and one or two small rasping teeth (gabelzähne) subapically; movable cheliceral digit with three coarse teeth; arthrodial envelope margin smooth; movable digit of male unidentate; spermatodactyl digitiform (Figs 35, 36). Deutosternum with seven transverse rows of denticles of similar width (Fig. 45) or progressively wider basally (Fig. 2), rows multidenticulate, all rows connected, or basal row free. Corniculi normal in form, well-separated from base to apex, shorter and stouter in male (Fig. 32); internal malae highly variable in form (Figs 2, 45). Subcapitular setae smooth, hp 1 and hp 3 similar in length and longer than cp, lateral hp 2 minute. Palpi with normal setation as described for Gamasina by Evans (1964); palpfemoral seta al and palpgenual setae al - 1 and al - 2 more or less spatulate; palptarsal apotele two-tined, with spatulate tips (Figs 6, 7). Legs. FEMALE AND MALE. Legs I to IV with pretarsi bearing paired small claws with basal swelling, paradactyli and rounded pulvillae (Figs 30, 57). Legs II enlarged, much stouter than other legs (Figs 20, 49, 59, 60), and with strongly thickened, claw-like setae on dorsal and lateral surfaces of tarsus (Figs 27, 57). Legs II to IV with tarsus (excluding pretarsus) at most two times (1.3–1.5 for II, 1.7– 2.1 for III–IV) as long as tibia. Distal margins of coxae I–IV without prominent serrations or spur-like processes. Tarsus I with sensilla s inconspicuously lanceolate (Fig. 26), and without markedly elongated setae apically; one solid, dorsobasal seta long, erect (Fig. 25). Tarsi II– IV with apical setal processes ad - 1, pd - 1 long, as long as pretarsi (to the base of claws), and with acutely triangular apical process ventrally. Complement of setae on segments of legs I-II-III-IV normal for Blattisociinae as presented by Lindquist & Evans (1965): coxae, 2 - 2 - 2 - 1; trochanters, (4-6)- 5 - 5 - 5; femora, 12 (2 2 / 1 3 / 2 2) - 11 (1 2 / 1 3 / 2 2) - 6 (1 2 / 1 1 /0 1) - 6 (1 2 / 1 1 /0 1); genua, (2 3 / 1 or 2 3 / 1 2) - (2 3 / 1 2 /0 2) - (2 2 / 1 2 /0 1) - (2 2 / 1 2 or 3 /0 1); tibiae, (2 3 / 1 3 / 1 or 2 2) - (2 2 / 1 2 / 1 2) - (2 1 / 1 2 / 1 1) - (2 1 / 1 3 / 1 2); genua II and III each lacking pv - 1 (Figs 19-22, 48- 51). Leg setae collectively smooth. Legs of male without dimorphically modified setae. Etymology. The name of the genus is a Latinized combination of the term fungus, meaning fungus, and seius or sejus, a Roman surname commonly used by authors to form names for genera of mesostigmatic mites. The name is masculine in gender, and indicates the habitat from which these mites have been collected. Distribution and habitats. This genus is based on material associated with perennial fungal growths on decaying logs in two widely separated, subtropical to tropical New World localities, one from pine-oak forest south of the Isthmus of Tehuantepec in Mexico, and one from a locality in coastal lowland rainforest of Costa Rica. Remarks. The genus Fungiseius is based on their adults having several apomorphies, some of which appear to be unique among the known taxa of Blattisociidae: (1) dorsal shield with delineated lateral rim extending from setae z 2 to S 5 and bearing z 2 or s 2, r 2 -r 5, and S 1 -S 5; (2) apex of endopodal extension of sternal or sternitigenital shield between legs I and II with a gland pore; (3) female with deep postgenital furrow; (4) male and female with deep postanal furrow; (5) opisthogastric setae JV 3 absent; (6) hypostomatic setae h 2 minute; (7) legs II much stouter than other legs; (8) strongly thickened claw-like setae on tarsi of legs II to IV, especially leg II; (9) genua of legs III–IV lacking seta pv - 1. Attributes (1), (3), (4) and (8) appear to be unique to this genus. Although attribute (1) is superficially similar to a condition found in Orthadenella, the latter genus does not belong to this subfamily, in view of its females not having an apparently phytoseioid-type spermathecal system (Athias-Henriot 1973; see discussion below). Also, the delineated rim of attribute (1) in Fungiseius is unique in carrying lateral setae S 1 -S 5, leaving the R - marginals on soft cuticle, while the rim found in Orthadenella and among genera of the ascoid family Melicharidae differs in bearing most or all of the R - marginal setae, with the laterals inserted mediad the rim (personal observations). Attribute (7) is shared only with Hoploseius, whose members are also restricted to bracket fungi. Attributes (2) and (6) are uncertainly unique in that their presence or absence among other taxa of this and related families has not been confirmed, while (5) and (9) are homoplastic. The apomorphic attribute of a “phytoseioid-type” sperm access system in adult females, on which the superfamily Phytoseioidea is based (Athias-Henriot 1968, 1971; Alberti & Di Palma 2002; Lindquist et al. 2009), is difficult to observe in both species of Fungiseius, due to the reduced size and relatively weak sclerotization of the calyx, such that discernment of a minor duct emanating from the embolus is problematical. However, other, more readily observable attributes detailed by Lindquist & Moraza (2010) as diagnostic for the family Blattisociidae support placement of Fungiseius in this family. Among the genera of Blattisociinae, adults of Fungiseius are strikingly similar to those of Hoploseius, whose members also dwell in bracket fungi, in having greatly thickened legs II. However, this appears to be an interesting case of convergence. Legs II of Hoploseius bear strongly thickened, spine-like setae on the ventral faces of the femur, genu, tibia and tarsus; these setae are apposed to one another, apparently for grasping structures, most probably those of the drosophilid flies used for phoresy (Lindquist 1963). As adult males are similarly armed, but have not been found to be phoretic, the grasping function may also be used by both sexes in copulation. In contrast, legs II of both sexes in Fungiseius have slender setae on the ventral faces of the femur and genu; strongly spine-like setae are restricted to the tarsus, primarily on the dorsal and lateral faces. The latter setae are claw-like, not apposable, and probably are used for scraping or burrowing. Other than a within-genus tendency towards hypotrichy among some of the leg segments, which is subject to considerable homoplasy, members of these two genera do not share other apomorphic attributes that would indicate a sister-group relationship. Even the loss of seta pv - 1 on genua III and IV in Fungiseius differs from the losses of setae al - 2 and av - 1 on genu III and of pd - 3, al - 2, and pl - 1 on genu IV among some species in Hoploseius (Lindquist & Evans 1965). The affinity of Hoploseius with Lasioseius, based on the tricarinate form of at least some of the dorsal shield setae and the strongly formed ventrianal shield, is distinct from Fungiseius. Among other genera of Blattisociinae, adult females of Fungiseius are similar to those of Aceodromus and Opilioseius in having a reduced ventrianal shield or an anal shield, and in the spermathecal apparatus having a weakly sclerotized calyx. These attributes are subject to considerable homoplasy among other genera of this subfamily, especially the species-rich Lasioseius (personal observations).Published as part of Moraza, María L. & Lindquist, Evert E., 2011, A new genus of fungus-inhabiting blattisociid mites (Acari: Mesostigmata: Phytoseioidea) from Middle America, with a key to genera and subgenera of the subfamily Blattisociinae, pp. 1-25 in Zootaxa 2758 on pages 4-6, DOI: 10.5281/zenodo.27675
Zerconopsini Makarova & Marchenko & Lindquist 2021, tribe n.
No full textZerconopsini tribe n. Type genus: Zerconopsis Hull, 1918. Diagnosis. Adult dorsal shield entire, often fully covering body dorsum, with or without lateral incisions, its setae mostly simple but usually some (1–8 pairs) paddle-shaped, rarely setae j 1, z 1 and often seta J 5 serrated or pilose. Sternal or sternitigenital shield consolidated with endopodal sclerites between coxae I–II and II–III but usually not connected with free endopodal strips between coxae III–IV. Female with ventrianal shield bearing 1–6 pairs of opisthogastric setae but never expansive enough to include metapodal platelets and setae JV 1; rarely, broad anal shield present bearing only three circumanal setae (Iphidonopsis). Peritreme long, its margins often crenulate. Subcapitulum with deutosternum wide or of moderate width; hypostomatic setae hp -1 and usually hp -3 elongated, often whip-like, 2–5 times longer than distance between them. Palp tarsus without distinct macroseta but apically with two distinct sensillae—large erect one with truncated tip, and curved “S”-like sensilla (Fig. 10). Palp trochanter internal seta whip-like, often much (3–6 times) longer than external seta (as an exception, 1.5 times in one undescribed Zerconopsis species). Male spermatodactyl of different length, tube-like, sometimes with membranous frenulum. Tarsus I with or without claws. Genu III usually plesiomorphically with eight setae (pv -1 present); tarsi II–IV each with dorso-proximal setae ad -2, pd -2 elongated, curved; males of few Zerconopsis species have ventral seta mv on tarsus II modified, thickened and attenuated. Genera included: Zerconopsis, Xenoseius, Iphidonopsis.Published as part of Makarova, Olga L., Marchenko, Irina I. & Lindquist, Evert E., 2021, Distribution, habitats, and redescription of the rare mite species Iphidonopsis sculptus Gwiazdowicz, 2004 (Mesostigmata: Ascidae), pp. 448-464 in Zootaxa 4952 (3) on page 450, DOI: 10.11646/zootaxa.4952.3.2, http://zenodo.org/record/469053
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Using Simple Organisms to help in complex disease processes
No full textDr. Susan Lindquist talks about how neurological diseases happen and why they happen as part of the 2011 Roy E. Moon Distinguished Lectureship in ScienceAngelo State UniversityAngelo State UniversityWest Texas Medical Associate
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