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Obituary: Alexandar Borissov Yanovski
No full textAfter a short illness, Bulgarian mathematical physicist Alexandar Borissov Yanovski passed away on October 27, 2023 at his home in Sofia. The following are some of the personal reminiscences of Francesco G. Russo
Growth and distribution in an AK-model with endogenous impatience
No full textThis paper combines two strands of the literature on inequality and distribution issues: the classical approach, which insists on the division of society into classes characterized by different saving propensities, and the social conflict approach, which considers that inequality inflicts direct and indirect costs to economic development. An endogenous-growth model is studied. We assume that each consumer's subjective discount factor is determined endogenously and depends on economic inequality through the following two channels. On the one hand, it is positively related to the individual consumer's relative wealth. On the other hand, it is negatively affected by a simple aggregate measure of social conflict. We show that, unlike models with exogenously given discount rates, steady state equilibria in our model is indeterminate and that the set of all equilibria is acontinuum which can be parameterized by a simple index of income inequality. The growth rate is ambiguously related to the inequality index. However, under some reasonable assumptions, the growth rate dependence on this index has an inverted U-shaped form.wealth distribution, intertemporal choice, growth, development
Stygiiulus tobias Vagalinski & Borissov & Bobeva & Canciani & Antić 2022, comb. nov.
No full textStygiiulus tobias (Berlese, 1886) comb. nov. Figs 10F, 11D, 13 Julus (Typhloiulus) Tobias Berlese, 1886: 98–99, tab. XIII, figs 20–23. Typhloiulus (Iulus, Mesoporoiulus) Tobia (tobias) – Manfredi 1932: 81. Typhloiulus tobias – Wolf 1934 –38: 516. — Vagalinski et al. 2015: 345–346. Typhloiulis (sic!) tobias – Boldori 1936: 113. Typhloiulus Tobia (sic!) – Boldori 1937: 11. Typhloiulus (Mesoporoiulus) tobias – Verhoeff 1930: 16–17, fig. 3. — Strasser 1962: 38–39, figs 11f, 45–46. Typhloiulus Tobias – Conci 1951: 44. Typhloiulus tobias var. fuscus Manfredi, 1953a: 139. ? Typhloiulus tobias pygmaeus Manfredi, 1953b: 100. Typhloiulus tobias fuscus – Manfredi 1953b: 101. Diagnosis A species of Stygiiulus stat. nov. with normal mouthparts. Clearly distinguishable from congeners by the very distinctive structure of the opisthomere (Fig. 10F) including a right- to acute-angled posterior hump pointing distad, a large, (sometimes) bipartite velum (with a posteriorly positioned distal outgrowth (do), this being much less prominent than in S. insularis comb. nov. and S. seewaldi comb. nov.), with the main part being mostly smooth (barely serrated), and a solenomere distally forming a stout anterior and a much more slender posterior branch, both apically finely ciliate; some specimens with a minute third thumb-like branch basally to the posterior branch. In addition, this species (except for its dubious subspecies T. t. pygmaeus, see below) differs from all other Stygiiulus stat. nov. species by the presence of a very long and upwards curved epiproct. Material examined ITALY • 2 ♂♂, 1 ♀; Veneto, Altopiano dei Sette Comuni, Vastagna (VI), Grotta [cave] del Subiolo (135 V/VI); 169 m a.s.l.; 4 Mar. 1990; G. Peretto and E. Piva leg.; H. Enghoff det. 2013; NHMD. Descriptive notes ANTENNAE. 2.2–2.4 times as long as head and 1.65–1.7 as long as H in males, and 1.9–2 and 1.3– 1.4 times, respectively, in females; antennomere 5 2.6–2.9 times as long as broad; antennomeres 2, 3 and 5 subequal in length, slightly longer than 4, and 1.4–1.5 times as long as 6. TARSUS OF MID- BODY LEGS. 1.8–1.9 times as long as tibia and 2.8–4.3 times as long as apical claw. Midbody legs ca 1.25 times as long as H in males, and equal in length in females. FEMALE SEXUAL CHARACTERS. Leg-pairs 1 and 2 considerably thicker and shorter than following legs. Vulva (Fig. 11D) nearly symmetric; bursa slightly compressed in the sagittal plane; each valve distally with one vertical row of several setae; a similar row present on each side sclerite; operculum (op) very thick, subconical, i.e., tapering to a distinct blunt apex, exceeding bursa by ca 1 ⁄ 5 of total height of vulva, distally with a dense bunch of setae each side. Receptaculum seminis consisting of two long and narrow, closely adjacent tubes of equal length – a twisted lateral one (lt) leading to a small piriform ampulla (la), and a mostly straight mesal one (mt) ending in a somewhat larger ovoid ampulla (ma). Distribution Known from numerous caves and one epigean locality in the central Venetian Prealps, as well as from several caves in Monti Lessini (extreme south of the Venetian Prealps). Also known from two caves on the southern slopes of Dolomiti (Fig. 13, white squares). Remarks In the past, this taxon was treated as a member of Mesoporoiulus Verhoeff, 1905. Vagalinski et al. (2015) hypothesized it could be a somewhat deviating member of Stygiiulus. Here we fully confirm this assumption and formally transfer tobias to the genus Stygiiulus. The subspecies S. t. pygmaeus (Manfredi, 1953) comb. nov. has already caught the attention of Strasser (1962). On page 60 of the latter work, the author commented on the significant size difference between pygmaeus (23 mm of length) and the typical tobias (50–67 mm of length), and also emphasized the apparent confusion of Manfredi (1953b) regarding the gonopods of her newly described subspecies, which she stated to match well (along with most other characters) to the descriptions of tobias given by both Attems (1927) and Verhoeff (1930). In fact, what Attems (1927) recorded and depicted was S. maximus comb. nov. (see Remark under the latter species). The short and straight epiproct in pygmaeus (as originally described), unlike the long and upwards curved process in the typical form, adds further uncertainty about the identity of Manfredi’s subspecies. We agree with Strasser’s (1962) opinion that pygmaeus most likely represents a separate species. However, its status can only be resolved after examination of type or topotype material. The gonopods of the two presently examined males from Grotta del Subiolo differ fromVerhoeff’s(1930) drawings based on material from Grotta Parolini near Vastagna and/or “Bus de la Bela” near San Donato, prov. Belluno, by a blunt and finely serrated, rather than tapering and ciliate, posterior part of velum, and by an apically tri- instead of bipartite solenomere. In Grotta della Bigonda, this species lives in sympatry with S. ausugi comb. nov.Published as part of Vagalinski, Boyan, Borissov, Simeon, Bobeva, Aneliya, Canciani, Giacomo & Antić, Dragan Ž., 2022, The mostly cavernicolous millipede genus Stygiiulus Verhoeff, 1929, stat. nov.: taxonomy, distribution and phylogenetic relationships (Diplopoda, Julida, Julidae), pp. 30-69 in European Journal of Taxonomy 798 on pages 55-57, DOI: 10.5852/ejt.2022.798.1669, http://zenodo.org/record/632300
Stygiiulus ausugi Vagalinski & Borissov & Bobeva & Canciani & Antić 2022, comb. nov.
No full textStygiiulus ausugi (Manfredi, 1953) comb. nov. Figs 10A, 11A, 13 Typhloiulus ausugi Manfredi, 1953b: 136–138, figs 1–2. Typhloiulus (Stygiiulus) ausugi – Strasser 1962: 11, 12, 18, 37, 38, figs 1–2, 8, 11h, 15, 41–44. Typhloiulus (Stygiiulus) ausugi ausugi – Strasser 1971a: 13. Typhloiulus ausugi ausugi – Minelli 1985: 9. Typhloiulus ausugi – Vagalinski et al. 2015: 336–337. Diagnosis One of the three species of Stygiiulus stat. nov. with modified mouthparts, the other two being S. fimbriatus comb. et stat. nov. and S. gentianae comb. et stat. nov. Differs from both mainly by the complete absence of posterior hump on opisthomere, the very large velum with minute fringes on posterodistal margin, and the anterior and posterior solenomeral branches both being very short, hardly distinguishable. Material examined ITALY – Trentino (Autonomous Province of Trento) • 1 ♂; topotype; Altopiano dei Sette Comuni, Grigno, Grotta [Cave] della Bigonda (243 VT/TN); 450 m a.s.l.; 10 Mar. 1996; G. Peretto and E. Piva leg.; H. Enghoff det. 2013; NHMD • 1 ♀; Grigno, Grotta [Cave] del Calgeron (new record), a side branch of the waterfall; Dec. 1973; Ischia leg.; H. Enghoff det. 1984; A. Minelli ded. 1985; NHMD. Descriptive notes ANTENNAE. 2–2.1 times as long as head and 1.7–1.75 times as long as H in males, and 1.7–1.8 times and ca 1.4 times, respectively, in females; antennomere 5 ca twice as long as broad; antennomeres 2, 3 and 4 subequal in length, ca 1.2 times as long as 5, and 1.7–1.8 times as long as 6; 6 visibly broader than 5, giving a clavate appearance of the antenna. MOUTHPARTS. With strong hydrophilous modifications (sensu Enghoff 1985): labrum edentate or with three minute, vestigial teeth. Gnathochilarium short and distally markedly broad, stipites with conspicuously large palps. Gnathal lobes of mandibles with the external and the internal tooth strongly reduced, both being distinct but very small and pointed, deeply hidden in the buccal cavity; molar plate much smaller than the normal julid condition; pectinate lamellae five instead of the usual four, consisting of very fine and densely set teeth. TARSUS OF MID- BODY LEGS. Ca 2.5 times as long as tibia and ca 5 times as long as apical claw. Mid-body legs ca 1.7 times as long as H in males and ca 1.4 times in females. FEMALE SEXUAL CHARACTERS. Legs 1 and 2 slightly shorter but not thicker than following legs. Vulva (Fig. 11A) symmetric; bursa very broad, strongly compressed in the sagittal plane; each valve of bursa with one vertical row of setae; operculum (op) distally bulging, with a distinct apical concavity, exceeding bursa by nearly ⅓ of total height of vulva, with just several setae each side. Receptaculum seminis consisting of two small tubes: a very fine, somewhat bent, mesal one (mt) ending in a small ovoid ampulla (ma), and a significantly broader, mostly straight, lateral one (lt), not forming ampulla at bottom. Distribution Prior to this study, the species was known only from its type locality – the Grotta della Bigonda – on the northern border of the central part of the Venetian Prealps. The new locality of this species – the Grotta del Calgeron – is located in the same area, some 20 km south of the type locality (Fig. 13, blue circles). Remarks Strasser (1971a) described two subspecies of ausugi, viz., fimbriatus and gentianae. Considering the gonopod conformations of the two latter forms, both of which differ significantly from S. ausugi comb. nov. and are instead much more similar to S. illyricus comb. nov., S. maximus comb. nov., S. montellensis comb. nov., and S. rotundatus comb. et stat. nov., it becomes obvious that Strasser (1971a) treated the modified mouthparts as a taxonomic feature of primary importance, being unaware of the adaptive nature of such modifications, as revealed later by Enghoff (1985). Thus we here elevate fimbriatus and gentianae to the species level and describe both of them in detail below. In the Grotta della Bigonda, this species lives in sympatry with S. tobias comb. nov.Published as part of Vagalinski, Boyan, Borissov, Simeon, Bobeva, Aneliya, Canciani, Giacomo & Antić, Dragan Ž., 2022, The mostly cavernicolous millipede genus Stygiiulus Verhoeff, 1929, stat. nov.: taxonomy, distribution and phylogenetic relationships (Diplopoda, Julida, Julidae), pp. 30-69 in European Journal of Taxonomy 798 on pages 34-35, DOI: 10.5852/ejt.2022.798.1669, http://zenodo.org/record/632300
Stygiiulus fimbriatus Vagalinski & Borissov & Bobeva & Canciani & Antić 2022, comb. et stat. nov.
No full textStygiiulus fimbriatus (Strasser, 1971) comb. et stat. nov. Figs 1–3, 13 Typhloiulus ausugi fimbriatus Strasser, 1971a: 13–14, fig. 14. Typhloiulus ausugi fimbriatus – Minelli 1985: 10. — Vagalinski et al. 2015: 336–337. Diagnosis A species of Stygiiulus stat. nov. with modified mouthparts. Differs from its most similar congener, S. gentianae comb. et stat. nov., by gonopod details, viz. both promere and mesomere being apically bent frontad rather than turned towards one another, velum being marginally serrated all along rather than having a smooth anterior margin; by the more pronounced posterior part of pleurotergal flange 7 in males; by the vulval operculum being concave rather than convex, exceeding bursa by ca ¼ rather than 2 ⁄ 5 of total height of vulva; by the presence of a small, roundish anterior lobe on ventral margin of body ring 3 in females, vs ventral margin of body ring 3 in females being almost entirely subtriangular in S. gentianae comb. et stat. nov., and by the somewhat longer epiproct. Material examined Holotype ITALY • ♂; slide preparation plus ethanol sample; Friuli-Venezia Giulia, San Pietro al Natisone, Grotta [cave] di San Giovanni d’Antro; slide no. 1003: gonopods, antennae, leg-pairs 1, 2, 3, 7, penis, gnathochilarium, flanges of pleurotergum 7; ethanol sample: broken in six pieces; MHNG-ARTO-26720. Other material ITALY • 3 ♂♂, 1 ♀; Friuli-Venezia Giulia, Prestento di Torreano, Foran di Landri Cave (11 / 46FR); 10 Jul. 2019; G. Canciani and M. Colautti leg.; IBER • 4 ♂♂, 2 ♀♀; same collection data as for preceding; IZB • 1 ♂; same collection data as for preceding; NHMD. Comment Since the original description was based upon one male which was not designated by Strasser (1971a) as holotype, we here consider that male as a holotype fixed by monotypy, in order to stabilize the nomenclature of the species under Article 73.1.2 of the ICZN. Redescription SIZE AND NUMBER OF BODY RINGS. Non-type ♂♂ with BRF 26–31 +0–1 +T, L = 14–20 mm, H = 1.1– 1.25 mm; non-type ♀♀ with BRF 28–32 +0–1 +T, L = 16–21 mm, H = 1.3–1.6 mm. COLOURATION (Fig. 1A–B, E–G). Generally brown-beige; metazonae with a narrow transverse dark brown band before their last third, the band gradually narrowing ventrally. EXTERNAL STRUCTURES. Head with 2 vertigial, 2+2 supralabral and 16–18 labral setae. Antennae (Fig. 1B) 2.3 times as long as head and 2.3–2.4 times as long as H in males, and 2 times and 1.85–1.9 times, respectively, in females; antennomere 5 3.12–3.15 times as long as broad; antennomeres 2–5 subequal in length, 1.3–1.6 times as long as 6. Antennomeres V and VI each with a terminal corolla of large sensilla basiconica bacilliformia; antennomere VII with a terminal corolla of small sensilla basiconica bacilliformia. MOUTHPARTS (Figs 1C–D, H, 2A–B). With moderate hydrophilous modifications (sensu Enghoff 1985): Labrum either edentate (Fig. 1D) or with three well-developed labral teeth (Fig. 1C). Gnathochilarium (Fig. 2A) rather short and distally markedly broad, with the 3 long distal setae on each stipes usual for the family, stipites medially each with 4–10 short setae arranged longitudinally, stipital palps conspicuously large; promentum large (pm), completely separating lingual lamellae, the latter each with 2–3 proximal and 1 distal seta. Gnathal lobes of mandibles (Fig. 2B) with the external (et) and the internal tooth (it) slightly to moderately reduced; molar plate (mp) relatively small (but larger compared to that in S. ausugi comb. nov.); the four pectinate lamellae (pl) consisting of slender and very densely set teeth. Hypopharynx distally densely ciliate, posterior node reduced, with roundish posterior margin (Fig. 1H). COLLUM. Entirely smooth, its frontolateral margin bent outwards. Body rings considerably vaulted. Prozonae smooth. Metazonae with well-developed striation only ventrally, dorsally and laterally with faint and short striae only in anterior parts; setae ca 20% of H (Fig. 1F), arranged in moderately dense whorl. Ozopores very small, placed behind pro-metazonal suture at ca 2 ⁄ 5 of metazonal length measured from front to back. Tarsus of mid-body legs 2.2–2.4 times as long as tibia and 2.8–3.7 times as long as apical claw; accessory claw absent. Mid-body legs 1.5–1.6 times as long as H in males, 1.4 times in females. TELSON (Fig. 1G). Epiproct short and stout, straight all along, ending with a short hyaline tip turned more or less dorsad, barely protruding behind caudal contour of paraprocts. Hypoproct broadly rounded, tightly fitting under paraprocts, with rather evenly setose ventral face. Paraprocts densely covered with long setae, without distinct rows of shorter setae along caudal margins. MALE SEXUAL CHARACTERS. Leg-pair 1 (Fig. 3A) rather slender hooks oriented towards one another; with three complete and another one or two faintly indicated segments; with apically densely microdentate tibial outgrowths, and without or with barely visible tarsal remnants. Legs of more anterior body rings with an adhesive pad on tibia, most pronounced in leg-pair 2, gradually diminishing in caudal direction, completely disappearing around mid-body; tibia and femora without modifications. Pleurotergum 7 (Fig. 1E) caudo-ventrally forming small rounded lobes directed caudad. Penis (Fig. 3B) long, in situ visible behind coxae 2, slender hourglass shaped: broadest at base, narrowing until the middle, then slightly widening again, ending with short, diverging, apical lobes bearing fine, blunt, terminal lamellae. GONOPODS (Figs 1B, 2C–E, 3C). In situ obliquely protruding from gonopodal sinus with their distal parts (Fig. 1B). Promere (Fig. 2C, p in Fig. 3C) somewhat higher than mesomere, both being significantly surpassed by the opisthomere. Promere stout, oar-shaped (broadest apically), forming a near rightangled meso-apical corner and a broadly rounded latero-apical corner; apical margin bent somewhat frontad; caudal face distally densely microsquamose, basally with an internal and an external lobe, both being short and robust, partly fused to one another. Mesomere (Fig. 2D, m in Fig. 3C) narrow spoon-like, with the apex turned meso-frontad; caudal face distally deeply concave and sparsely microsquamose. Opisthomere (Figs 2E, 3C) markedly slender, with a distinct, obtuse posterior hump (ph); velum (v) pointing distad, both its frontal and caudal margin apically deeply serrated; solenomere with a slender posterior branch (pb) bent caudad, ending with several long ciliae, anterior branch (ab) vestigial, barely protruding, mostly concealed between the velum and the posterior solenomeral branch, densely ciliate; with 2 or 3 fine distal setiform filaments (sf), and sometimes with a variously developed basal spine (bs) at flagellum channel (fc). FEMALE SEXUAL CHARACTERS. Leg-pairs 1 and 2 visibly shorter, 1 also thicker, than following legs. Ventral margin of body ring 3 with roundish anterior lobe (Fig. 1I). Vulva (Fig. 3D) somewhat compressed in the sagittal plane, mostly symmetric: lateral side of operculum higher and apically more pointed than mesal one; each valve of bursa with one vertical row of setae; operculum (op) broad and thick, with a concave apical margin, exceeding bursa by ca ¼ of total height of vulva, medio-laterally with two longitudinal rows of setae each side. Receptaculum seminis consisting of two short and narrow, somewhat folded tubes – a lateral (lt) and a mesal one (mt), both insignificantly widening towards bottom, not forming distinct ampullae. Distribution Known only from two caves in the Julian Alps in Italy, near the border with Slovenia (Fig. 13, yellow circles). Remark The new locality of S. fimbriatus comb. et stat. nov., Cave Foran di Landri, is an active cave with a stream running through it year-round, flowing out of the entrance, after passing through a series of syphons (four discovered so far). All examined specimens were found right beyond the first two syphons, ca 40 meters from the entrance. This part of the cave includes a number of ponds, and it probably becomes completely flooded during rainy periods (Canciani 2019). Part of the individuals was observed moving on the surface of the ponds – a behaviour most likely associated with a filtrating rather than chewing feeding mode, in which small organic particles adhere to the fine and densely set teeth of the pectinate lamellae and to the cilia of the hypopharynx. The cave of San Giovanni d'Antro (the type locality) is of the same type as Foran di Landri, and Strasser (1971a) noted that it was occasionally flooded.Published as part of Vagalinski, Boyan, Borissov, Simeon, Bobeva, Aneliya, Canciani, Giacomo & Antić, Dragan Ž., 2022, The mostly cavernicolous millipede genus Stygiiulus Verhoeff, 1929, stat. nov.: taxonomy, distribution and phylogenetic relationships (Diplopoda, Julida, Julidae), pp. 30-69 in European Journal of Taxonomy 798 on pages 35-41, DOI: 10.5852/ejt.2022.798.1669, http://zenodo.org/record/632300
Stygiiulus gentianae Vagalinski & Borissov & Bobeva & Canciani & Antić 2022, comb. et stat. nov.
No full text<i>Stygiiulus gentianae</i> (Strasser, 1971) comb. et stat. nov. <p>Figs 4–6, 13</p> <p> <i>Typhloiulus ausugi gentianae</i> Strasser, 1971a: 13–14, fig. 15.</p> <p> <i>Typhloiulus ausugi gentianae</i> – Minelli 1985: 10. — Vagalinski <i>et al.</i> 2015: 336–337.</p> Material examined <p> <b>Lectotype</b> (designated here) ITALY • ♂; Veneto, Bosco del Cansiglio [Cansiglio Forest], Bus [cave] de la Genziana; specimen unbroken; MHNG-ARTO-26721.</p> <p> <b>Paralectotypes</b> ITALY • 1 ♀; same collection data as for lectotype; specimen unbroken; MHNG-ARTO-26722 • 1 ♂ slide preparation; same collection data as for lectotype; labrum, mandibles, gnathochilarium, antennae, penis, flanges of pleurotergum 7; MHNG-ARTO-26723 • 1 ♂ slide preparation; same collection data as for lectotype; gonopods; MHNG-ARTO-26724.</p> <p> <b>Other material</b></p> <p>ITALY • 1topotype♀; Veneto, province of Treviso, Bosco del Cansiglio [Cansiglio Forest], Fregona,q. 1020, Bus [cave] de la Genziana (1000 V /TV); 3 Oct. 1985; E. Piva leg. and ded.; NHMD • 1 topotype ♂, 2 topotype ♀♀; same locality as for preceding; 22. Oct. 1994; E. Piva leg.; H. Enghoff det. 2013; NHMD • 2 ♂♂, 1 ♀; Friuli-Venezia Giulia, Cansiglio Cavallo, Barcis (PN), Grotta [cave] della Vecchia Diga (786 / 327FR); 484 m a.s.l.; 30 Jun. 1996; G. Peretto and E. Piva leg.; H. Enghoff det. 2013; NHMD • 2 ♂♂, 1 ♀; Friuli-Venezia Giulia, province of Pordenone, Montereale Valcellina (PN), Inghiottitoio [karstic pot-hole] della Val di Pai (1027 / 469FR); 30 Aug. 1984; Comotti leg.; R. Pisoni ded. 1989; NHMD.</p> Comment <p>Since the original description was based upon three males and two females, none of which was designated by Strasser (1971a) as holotype, we here designate the only intact male specimen as lectotype, in order to stabilize the nomenclature of the species under Article 74.1 of the ICZN.</p> Diagnosis <p> A species of <i>Stygiiulus</i> stat. nov. with modified mouthparts. Differs from its most similar congener, <i>S. fimbriatus</i> comb. et stat. nov., by gonopod details, viz. promere and opisthomere being turned towards one another rather than apically both bent frontad, velum with a smooth rather than entirely serrated anterior margin; by the weakly rather than strongly pronounced posterior part of pleurotergal flange 7 in males; by the vulval operculum being convex rather than concave, exceeding bursa by ca 2 ⁄ 5 rather than with ¼ of total height of vulva; by the entirely subtriangular ventral margin of body ring 3 in females, rather than ventral margin with a small, roundish anterior lobe; and by the somewhat shorter epiproct.</p> Redescription <p>SIZE AND NUMBER OF BODY RINGS. Lectotype ♂ with BRF 36 + 0+T, L = 18 mm, H = 1.3 mm, paralectotype ♀ with BRF 33 +0+T, L = 16.5 mm, H = 1.2 mm; topotype ♂ with BRF 31 +0 +T, L = 20.5 mm, H = 1.4 mm; topotype ♀♀ with BRF 31–35 +0–1 +T, L = 19–22 mm, H = 1.4–1.7 mm; males from Val di Pai with BRF 30–32 +1 +T, L = 13 mm, H = 1.05–1.1 mm; female from Val di Pai with BRF 30 +1 +T, L = 17 mm, H = 1.3 mm; males from Vecchia Diga with BRF 29–31 +0+T, L = 18–19 mm, H = 1.15– 1.2 mm, female from Vecchia Diga with BRF 27 +1+T, L = 18.5 mm, h = 1.3 mm. In general, males with BRF 29–36+ 0–1+T, L = 13–20.5 mm, H = 1.05–1.3 mm; females with BRF 27–36 +0–1+T, L = 16.5–22 mm, H = 1.2–1.7 mm.</p> <p> COLOURATION (Fig. 4A–B, F–G). Completely pallid, probably as a result of the long alcohol conservation (considering the presence of some colour pattern in the highly similar <i>S. fimbriatus</i> comb. et stat. nov.).</p> <p>EXTERNAL STRUCTURES. Head with 2 vertigial, 2+2 supralabral and 16–23 labral setae.Antennae (Fig. 4B) 2.5 times as long as head and 2.4–2.5 times as long as H in males, and 2.1–2.2 times and 1.8–2.1 times, respectively, in females; antennomere 5 2.8 times as long as broad. Antennomeres V and VI each with a terminal corolla of large sensilla basiconica bacilliformia; antennomere VII with a terminal corolla of small sensilla basiconica bacilliformia.</p> <p> MOUTHPARTS (Fig. 4C–D, H). Generally similar to those of <i>S. fimbriatus</i> comb. et stat. nov., including individuals with edentate labrum (Fig. 4D), as well as individuals with three small but distinct labral teeth (Fig. 4C). Gnathochilarial stipites each with a row of 2–5 rather than up to 10 setae. Posterior node of hypopharynx (Fig. 4C) reduced, with somewhat squarish posterior part.</p> <p> COLLUM. Collum as in <i>S. fimbriatus</i> comb. et stat. nov., but with the frontolateral margin only slightly bent outwards. Metazonal striation faint and sparse even on ventral side; setation somewhat shorter than in <i>fimbriatus</i> – around 10% of H. Tarsus of mid-body legs 2.1–2.3 times as long as tibia.</p> <p>TELSON (Fig. 4G). Epiproct very short, not protruding behind caudal contour of paraprocts), ending with a minute hyaline tip turned more or less dorsad. Hypoproct more narrowly rounded compared to the former species, blunt subtriangular in some specimens (regardless of sex).</p> <p> All remaining external somatic characters as in <i>S. fimbriatus</i> comb. et stat. nov.</p> <p> MALE SEXUAL CHARACTERS. Male leg-pair 1 (Fig. 5A) similar to the condition in <i>S. fimbriatus</i> comb. et stat. nov., differing in having a proportionately smaller tibial part, apically more sparsely microdentate/ microtuberculate. Male walking legs with more pronounced tibial pads than in <i>S. fimbriatus</i> comb. et stat. nov., these being still visible behind mid-body. Penis (Fig. 5B) as in the former species, but with longer and more tapering terminal lamellae.</p> <p> GONOPODS (Figs 5C, 6). Very similar to those of <i>S. fimbriatus</i> comb. et stat. nov., differing from the latter species mainly by the pro- (p) and mesomere (m) being gradually bent towards one another, rather than both apically turned frontad, and by the smooth rather than ciliate anterior margin of velum (v); also promere in <i>S. gentianae</i> comb. et stat. nov. relatively broader, with the external lobe (el) significantly higher than, rather than subequal to, the internal one (il); posterior branch of solenomere (pb) somewhat more robust, anterior branch of solenomere (ab) and posterior hump of opisthomere (ph) of same size and shape as in <i>S. fimbriatus</i> comb. et stat. nov.</p> <p> FEMALE SEXUAL CHARACTERS. Leg-pairs 1 and 2 shorter, 1 also slightly thicker, than following legs. Ventral margin of body ring 3 subtriangular (Fig. 4I). Vulva (Fig. 5D) mostly symmetric, somewhat compressed in the sagittal plane; operculum (op) very large, with a convex apical margin forming several rounded bumps, exceeding bursa by nearly 2 ⁄ 5 of total height of vulva; setation on both bursa and operculum in a similar pattern as in <i>S. fimbriatus</i> comb. et stat. nov., but with 1–2 setae on side sclerites in addition. Receptaculum seminis represented by two short and narrow tubes: a mesal one (mt) leading to an ovoid ampulla (ma), and a lateral one (lt) ending without distinct ampulla at bottom.</p> Distribution <p>Known from several caves in the easternmost part of the Venetian Prealps mountain range (Fig. 13, red circles).</p> Remark <p>Strasser (1971a) wrote that this species was found on wet vertical walls (common place for many troglobitic arthropods with mouthpart modifications).</p>Published as part of <i>Vagalinski, Boyan, Borissov, Simeon, Bobeva, Aneliya, Canciani, Giacomo & Antić, Dragan Ž., 2022, The mostly cavernicolous millipede genus Stygiiulus Verhoeff, 1929, stat. nov.: taxonomy, distribution and phylogenetic relationships (Diplopoda, Julida, Julidae), pp. 30-69 in European Journal of Taxonomy 798</i> on pages 41-45, DOI: 10.5852/ejt.2022.798.1669, <a href="http://zenodo.org/record/6323002">http://zenodo.org/record/6323002</a>
Agile Method in Social Work with Children and Adolescents Exhibiting Conduct Disorder and Antisocial Behaviour: Case of Kidsköpfe gGmbH
No full textThis article explores the application of the SCRUM methodology, a popular Agile framework, in social work with children and adolescents exhibiting conduct disorders and antisocial behaviour. Traditional social work models often struggle to adapt to the rapidly changing and complex needs of this high-risk population. The SCRUM framework, with its emphasis on continuous feedback, iterative processes, and interdisciplinary collaboration, offers a flexible and dynamic approach to care. By fostering teamwork between social workers, psychologists, and medical professionals, SCRUM facilitates real-time adjustments in interventions based on the evolving needs of the child. The article examines the benefits of empowering social work teams through SCRUM’s decentralized decision-making, which allows for proactive responses in crisis situations. The KIDSKöpfe gGmbH case study illustrates how SCRUM can be applied in practice, resulting in improved outcomes for children with complex behavioural issues. Despite the potential advantages, there remains a significant gap in the literature on SCRUM’s application in social work, particularly in managing conduct disorders. The article concludes by emphasizing the need for further research and case studies to explore SCRUM’s long-term impact in social work settings, particularly in addressing institutional barriers and regulatory challenges. The discussion highlights SCRUM’s potential to revolutionize social work by creating more flexible, responsive, and collaborative systems for managing high-risk children and adolescents
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