identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
03CA7512FFDE5748FDD6232CEF6C2A47.text	03CA7512FFDE5748FDD6232CEF6C2A47.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Autostreptus Silvestri 1905	<div><p>Genus Autostreptus Silvestri, 1905</p><p>Autostreptus Silvestri, 1905: 742 .</p><p>Type species: Iulus (recte: Julus) chilensis Gervais, 1847, by monotypy.</p><p>Diagnosis</p><p>Modified after Demange &amp; Silva (1971: 709). Species of Autostreptus differ from other Spirostreptidae by the combination of the following characters: anterior margin of collum unmodified, not thickened (Figs 4A, 8C); body rings mostly smooth. Prefemoral process (pfp) of first pair of male legs prominent (Figs 5A, 7A, 9A). Gonopods with proplica (pp) subrectangular (Figs 5C, 7C, 9C); metaplica (mp) with mesoapical process (map) prominent; lateroapical metaplical process (dmp) elongated, directed ectad (Figs 5C–D, 7C–D, 9C–D). Telopodite (tp) with lamellar expansion (ltp); seminal groove (sg) running along ectal margin of ltp; long, pointed antetorsal process (atp) (Figs 5C, E, 7C, E, 9C, E); tip of telopodite (tp) not branched, solenomere (sl) acuminated, partially covered by ltp (Figs 5F, 7F, 9F).</p><p>Distribution</p><p>Known from Canela in Coquimbo Region to Constitución in Maule Region, Chile.</p><p>Composition</p><p>Autostreptus chilensis (Gervais, 1847), A. yanezi Demange &amp; Silva, 1971, and A. silvagonzalezi sp. nov.</p><p>Remarks</p><p>While Spirostreptidae is well-defined morphologically within Spirostreptida, its internal classification remains uncertain as a result of the lack of phylogenetic studies. A preliminary subdivision was suggested by Enghoff (2023), carefully organizing the family into five tribes: Spirostreptini Brandt, 1833 (African genera); Trachystreptini Cook in Cook &amp; Collins, 1895 (African genera); Orthogoneptini Chamberlin, 1941 (American genera); Perustreptini Verhoeff, 1941 (African and America genera); and Metriostreptini Krabbe, 1982 (African genera). Here, we follow this intrafamilial organization, discussing below the position of the Chilean Autostreptus .</p></div>	https://treatment.plazi.org/id/03CA7512FFDE5748FDD6232CEF6C2A47	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	Parra-Gómez, Antonio;Iniesta, Luiz F. M.;Morales, Jesús A.	Parra-Gómez, Antonio, Iniesta, Luiz F. M., Morales, Jesús A. (2025): Revisiting the poorly known Chilean genus Autostreptus Silvestri, 1905 (Diplopoda, Spirostreptida, Spirostreptidae) with the description of a new species. European Journal of Taxonomy 1004: 237-258, DOI: 10.5852/ejt.2025.1004.2975, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2975/13405
03CA7512FFDE574CFDA82718E98128BC.text	03CA7512FFDE574CFDA82718E98128BC.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Autostreptus chilensis (Gervais 1847)	<div><p>Autostreptus chilensis (Gervais, 1847)</p><p>Figs 1–2, 4–5</p><p>Iulus chilensis Gervais, 1847: 193 .</p><p>Spirostreptus collectivus Attems, 1903: 88, figs 17–19. Synonymized by Silvestri (1905: 743). Kochliogonus novarae Attems, 1950: 246, figs 83–85. Synonymized by Demange &amp; Silva (1971: 709).</p><p>Iulus chilensis – Gervais 1849: 61, figs 3a–f; 1854: figs 3–3f; 1859: 24. Spirostreptus chilensis – Humbert &amp; de Saussure 1872: 174. — Porat 1876: 41. Autostreptus chilensis – Silvestri 1905: 742, figs 23, 35–46. — Porter 1912: 49, fig. 22. — Chamberlin 1957: 39. — Demange 1970: 379. — Demange &amp; Silva 1971: 709, figs 1–4. — Urzua &amp; Silva 1981: 271. — Krabbe 1982: 290, fig. 203. — Mauriès et al. 2001: 581. — Parra-Gómez 2022: 456, figs 2, 11c. Autostreptus collectivus – Attems 1914: 122. — Moritz &amp; Fischer 1974: 358. — Weidner 1960: 102.</p><p>Diagnosis</p><p>Males of A. chilensis differ from those of other species of the genus by having lamellar expansion of telopodite (ltp) with protruding serrated zone (arrow in Fig. 5F) just before the solenomere (sl); apex of metaplica (mp) slightly subtriangular; dmp pointed (Fig. 5C–E). First leg-pair with subtriangular and medially slightly bent outwards pfp (Fig. 5A).</p><p>Material examined</p><p>CHILE – Valparaíso Region • 2 ♂♂, 5 ♀♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-71.43&amp;materialsCitation.latitude=-33.08" title="Search Plazi for locations around (long -71.43/lat -33.08)">Parque Natural Cerro Los Pinos</a>; 33.08° S, 71.43° W; 23 Oct. 2018; J. Contreras leg.; under rocks; e-8 (field code); MNHNCL • 2 ♂♂, 1 ♀; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-71.5204&amp;materialsCitation.latitude=-32.9904" title="Search Plazi for locations around (long -71.5204/lat -32.9904)">Parque Natural Gómez Carreño</a>; 32.9904° S, 71.5204° W; 180 m a.s.l.; 6 Jul. 2023; A. Parra-Gómez and J. Contreras leg.; under a rock; PG-34-VAL (field code); MNHNCL • 1 ♂, 1 ♀, 1 juv.; near El Salto; 33.05° S, 71.51° W; 62 m a.s.l.; 8 Jul. 2023; A. Parra-Gómez, J. Contreras and Matías Sáa; under a rock; PG-49- VAL (field code); MNHNCL .</p><p>Redescription</p><p>Based on the examined specimens to supplement the original description and illustrate certain morphological features.</p><p>MEASUREMENTS. Males. Length ca 5.5–6.2 cm, vertical diameter 3.7–3.9 mm, width 3.5–3.7 mm. 59–61 podous rings, no apodous ring in front of telson. Females. Length ca 5.6–6.1 cm, vertical diameter 4–4.1 mm, width 3.9–4 mm. 58–60 podous rings, no apodous rings in front of telson.</p><p>COLOR. Recently fixed in alcohol. Head, antennae, and collum brownish to ruddy; body rings brownish in general; metazonites in anterior rings with one anterior band brownish and one posterior band ruddy, in posterior rings anterior band progressively fading to whitish and posterior band to brownish; telson whitish, faded (Fig. 4A–D).</p><p>HEAD. Eyes each with ca 41–45 ommatidia in seven horizontal rows (Fig. 4A). Antennae short, reaching back to ring 3 when stretched; fifth and sixth antennomere with distodorsal patch of short sensilla basiconica, seventh antennomere with distal margin covered by tiny conical setae; last two antennomeres densely setose (Fig. 4C). Mandibles with small stipital lobes, marginally swollen in males. Gnathochilarium with stipites slightly swollen distally in males; mentum heptagonal, with deep concavity; long setae marginally on apical part of lamellae linguales and stipites.</p><p>COLLUM. Smooth, with only one lateral diagonal furrow, more pronounced and longer in female; unornamented and without lateral lobes (Fig. 4A).</p><p>BODY RINGS. Mostly smooth, without carinae or granulation (Fig. 4A–B). Prozonites with usual fine ring furrows in anterior part. Metazonites striated, but striation not reaching ozopore level, dorsally smooth. Ozopore situated at mid-length of metazonite. No sigilla. Stigmatal grooves not extended.</p><p>TELSON. Preanal ring without process. Anal valves smooth, marginal lips not developed. Subanal scale broad triangular (Fig. 4B).</p><p>LEGS. Midbody legs short, ca ½ of body maximum vertical diameter. Males with adhesive pads only on tibia from leg-pair 3 on, absent in females; pads gradually smaller towards posterior rings (Fig. 4D). First male leg-pair (Fig. 5A): coxosternum oval-shaped, with lateral groups of few short setae, surface scattered with tiny setae. Prefemoral process (pfp) long, but not as long as prefemur, subtriangular, medially slightly bent outwards, surface scattered with tiny setae. Prefemur almost subtriangular, surface scattered with tiny setae, distally with few short setae. Femur, postfemur, tibia, and tarsus with long setae ventrally. Second male leg-pair (Fig. 5B): coxosternum short, bearing long setae marginally. Prefemur compressed dorsoventrally, with distal row of large setae; remaining podomeres with long setae ventrally; tarsal claw present. Penes (pn) located at proximal region of second leg-pair, composed of two entirely separate parts with subtriangular tips extended in laminar linguiform processes; gonopore positioned distally, not setose.</p><p>GONOPOD. Sternum short, trapezoidal. Proplica (pp) ca as long as metaplica (mp) (Fig. 5C–D), parallelsided; pp distally swollen, rounded, with short setae (Fig. 5C). Metaplica (mp) not complex (Fig. 5C– D); mesal margin thickened, laterally in contact with pp almost along its entire length; mp excavated distally, where antetorsal process (atp) emerges (Fig. 5C); mesoapical metaplica process (map) swollen, subtriangular, with diagonal shallow furrows (Fig. 5C–D); distolateral metaplica process (dmp) extended from mp excavation, thickened, pointed, directed ectad (Fig. 5C–E). Telopodite (tp) long, reaching in length pp when stretched, with torsion of 360° basally (Fig. 5C–E); tp with broad, lamellar branch (ltp) covering distally solenomere (sl); ltp smooth, slightly wrinkled, marginally thickened, with swollen serrated zone hidden by lamellar expansion (arrow in Fig. 5F); antetorsal process (atp) thin, pointed, half as long as post-torsal part of telopodite (Fig. 5C, E); sl S-shaped, pointed, emerging just after swelling of ltp (Fig. 5F).</p><p>Distribution</p><p>Valparaíso Region: Parque Nacional La Campana (300 m a.s.l.); Valparaíso; El Salto; Viña del Mar; Parque Natural Gómez Carreño; near El Salto; Parque Natural Cerro Los Pinos; Quilpué; Villa Alemana; Olmué; El Granizo; Peña Blanca; Casablanca (Attems 1903; Porter 1912; Demange &amp; Silva 1971 a; Urzua &amp; Silva 1981) (Fig. 1).</p><p>Remarks</p><p>The lectotype (male) and the paralectotypes (two males and at least four females) deposited at the Muséum national d’Histoire naturelle, Paris, France (MNHN), were not examined during this study. For more details on these types, see Demange &amp; Silva (1971: 709) and Mauriès et al. (2001: 581).</p><p>Autostreptus chilensis appears to be very common in the xeric areas of sclerophyllous forests near the Chilean coast, where several individuals of the species may be found under a single stone. Unfortunately, the locality of El Salto, one of the areas where this species is recorded, was severely impacted by wildfires in February 2024. An expedition to this area is essential to assess any potential decline in the population following this disturbance. Additionally, the Parque Natural Gómez Carreño, another region where the species occurs, lacks state protection. Given this context, the combination of these factors could put the species at risk.</p><p>Capdeville Celis (1945: 233–234) incorrectly identified the species as an agricultural pest, describing it as an 8 mm long millipede, with a dark green coloration and reddish legs. This description is inconsistent with the morphology of A. chilensis and clearly corresponds to a misidentification.</p></div>	https://treatment.plazi.org/id/03CA7512FFDE574CFDA82718E98128BC	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	Parra-Gómez, Antonio;Iniesta, Luiz F. M.;Morales, Jesús A.	Parra-Gómez, Antonio, Iniesta, Luiz F. M., Morales, Jesús A. (2025): Revisiting the poorly known Chilean genus Autostreptus Silvestri, 1905 (Diplopoda, Spirostreptida, Spirostreptidae) with the description of a new species. European Journal of Taxonomy 1004: 237-258, DOI: 10.5852/ejt.2025.1004.2975, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2975/13405
03CA7512FFDA5746FD8F2414ECA52AC1.text	03CA7512FFDA5746FD8F2414ECA52AC1.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Autostreptus yanezi Demange & Silva 1971	<div><p>Autostreptus yanezi Demange &amp; Silva, 1971</p><p>Figs 1, 3, 6–7</p><p>Autostreptus yanezi Demange &amp; Silva, 1971 a: 71, figs 5–9.</p><p>Autostreptus yanezi – Urzua &amp; Silva 1981: 271. — Krabbe 1982: 292. — Parra-Gómez 2022: 456, fig. 2.</p><p>Diagnosis</p><p>Males of A. yanezi differ from those of other species of the genus by having lamellar expansion of telopodite (ltp) with a distally bifurcated process (arrow in Fig. 7F) just before the solenomere (sl); apex of metaplica (mp) thickened, not subtriangular; dmp elongated, apically rounded (Fig. 7C–E). Proplica (pp) with mesoapical dentiform process (arrow in Fig. 7C). First leg-pair with subrectangular pfp widening at distal end (Fig. 7A).</p><p>Material examined</p><p>CHILE – Coquimbo Region • 3 juvs; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-71.5129&amp;materialsCitation.latitude=-31.6105" title="Search Plazi for locations around (long -71.5129/lat -31.6105)">Canela</a>; 31.6105° S, 71.5129° W; 4 Sep. 2023; J.A. Morales leg.; under a rock; e-56 (field code); MNHNCL • 1 ♂, 3 ♀♀, 2 juvs; same data as for preceding; 31.5966° S, 71.5057° W; e-57 (field code); MNHNCL .</p><p>Redescription</p><p>Based on the examined specimens to supplement the original description and illustrate morphological features.</p><p>MEASUREMENTS. Male. Length ca 6.6 cm, vertical diameter 3.7 mm (without legs), width 3.5 mm. 74 podous rings, one apodous ring in front of telson. Females. Length ca 7.2–7.5 cm, vertical diameter 4.3–4.5 mm (without legs), width 4–4.3 mm. 69–74 podous rings, no apodous rings in front of telson.</p><p>COLOR. After recent fixation in alcohol. Head, antennae, and collum blackish; body rings brownish in general, slightly faded by alcohol; posterior margin of metazonites brownish to yellowish; telson blackish (Fig. 6A–D).</p><p>HEAD. Eyes each with ca 53–56 ommatidia in seven horizontal rows. Antennae very short, reaching back to ring 2 when stretched; fifth and sixth antennomere with distodorsal patch of short sensilla basiconica, seventh antennomere with distal margin covered by tiny conical setae; last two antennomeres densely setose (Fig. 6B). Mandibles with small stipital lobes, marginally swollen in males. Gnathochilarium with stipites slightly swollen distally in males; mentum heptagonal, with deep concavity; short setae marginally on apical part of lamellae linguales and stipites (Fig. 6A).</p><p>COLLUM. Smooth, with only one lateral diagonal furrow; unornamented, slightly concave on lateral margins in males, straight in females.</p><p>BODY RINGS. Mostly smooth, without carinae or granulation (Fig. 6C–D). Prozonites with usual fine ring furrows in anterior part. Metazonites striated, but striation not reaching ozopore level, dorsally smooth. Ozopore situated at mid-length of metazonite. No sigilla. Stigmatal grooves not extended.</p><p>TELSON. Preanal ring without process. Anal valves smooth, marginal lips not developed. Subanal scale broad triangular (Fig. 6D).</p><p>LEGS. Midbody legs short, ca ⅓ of body maximum vertical diameter. Males with postfemoral and tibial adhesive pads from leg-pair 3 on, absent in females; pads gradually smaller towards posterior rings (Fig. 6C). First male leg-pair (Fig. 7A): coxosternum ellipse-shaped, with lateral groups of few short setae, surface scattered with tiny setae. Prefemoral process (pfp) long, almost as long as prefemur, subrectangular, widening at distal end, surface scattered with tiny setae. Prefemur almost subtriangular, surface scattered with tiny setae, distally with few distinct very short setae. Femur, postfemur, and tibia with few short setae distally, tarsal distal setae longer. Second male leg-pair (Fig. 7B): coxosternum short, bearing short setae marginally and distally. Prefemur compressed dorsoventrally, with paramedian row of short setae; remaining podomeres with few short setae distally, except tarsus; tarsal claw present. Penes (pn) located at proximal region of second leg-pair, composed of two entirely separate parts with truncated tips extended in laminar processes also truncated distally; gonopore positioned distally, not setose.</p><p>GONOPOD. Sternum short, trapezoidal. Proplica (pp) ca as long as metaplica (mp) (Fig. 7C–D), parallelsided, mesal margin curved; pp distally swollen, rounded, with short setae, and a mesoapical dentiform process (arrow in Fig. 7C). Metaplica (mp) not complex (Fig. 7C–D); mesal margin thickened, laterally in contact with pp almost along its entire length; mp deeply excavated distally, where antetorsal process (atp) emerges (Fig. 7C); mesoapical metaplica process (map) swollen, rounded, rugose (Fig. 7C–E); distolateral metaplica process (dmp) extended from mp excavation, thickened, not pointed, directed almost diagonally, slightly swollen at half-length (Fig. 7C–E). Telopodite (tp) long, reaching in length pp when stretched, with torsion of 360° basally (Fig. 7C–E); tp with broad, lamellar branch (ltp) covering distally solenomere (sl); ltp smooth, translucid and wrinkled in general, marginally thickened, with distally bifurcated process hidden by lamellar expansion, its proximal end swollen, outer end arched outwards (arrow in Fig. 7F); antetorsal process (atp) thin, pointed, half as long as post-torsal part of telopodite (tp) (Fig. 7C, E); sl S-shaped, pointed, emerging just after swelling of ltp (Fig. 7C–F).</p><p>Distribution</p><p>Coquimbo Region: Canela. Valparaíso Region: Los Quilos (type locality); Río Blanco (ca 1420 m a.s.l.) (exact locality not found, Fig. 1 shows an approximate position); Parque Nacional La Campana (ca 1300 m a.s.l.); Algarrobo (ca 100 m a.s.l.). Santiago Metropolitan Region: Santiago (Demange &amp; Silva 1971 a; Urzua &amp; Silva 1981; Krabbe 1982) (Fig. 1).</p><p>Remarks</p><p>The male holotype, from Los Quilos, Valparaíso, and the male paratype, from Río Blanco, Valparaíso, both deposited at the Muséum national d’Histoire naturelle, Paris, France (MNHN), were not examined during this study. For more details on these types and additional material, see Demange &amp; Silva (1971: 711).</p><p>An additional record from Navarino Island, Magallanes, by Krabbe (1982: 292), located more than 2000 km from the species’ type locality, is unlikely to pertain to A. yanezi and could potentially be a labelling error of the true locality (Parra-Gómez 2022). Autostreptus yanezi appears to inhabit more xeric zones under rocks in the dry scrublands of central Chile and can be found at higher altitudes than other congeneric species.</p></div>	https://treatment.plazi.org/id/03CA7512FFDA5746FD8F2414ECA52AC1	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	Parra-Gómez, Antonio;Iniesta, Luiz F. M.;Morales, Jesús A.	Parra-Gómez, Antonio, Iniesta, Luiz F. M., Morales, Jesús A. (2025): Revisiting the poorly known Chilean genus Autostreptus Silvestri, 1905 (Diplopoda, Spirostreptida, Spirostreptidae) with the description of a new species. European Journal of Taxonomy 1004: 237-258, DOI: 10.5852/ejt.2025.1004.2975, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2975/13405
03CA7512FFD0575AFDD82799E91C2E94.text	03CA7512FFD0575AFDD82799E91C2E94.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Autostreptus silvagonzalezi Parra-Gómez & Iniesta & Morales 2025	<div><p>Autostreptus silvagonzalezi sp. nov.</p><p>urn:lsid:zoobank.org:act: 4439984B-190F-4D12-A09E-55D5812AF75D</p><p>Figs 1, 8–9</p><p>Diagnosis</p><p>Males of A. silvagonzalezi sp. nov. differ from those of other species of the genus by having telopodite (tp) with lamellar branch (ltp) thickened (Fig. 9C–F), but narrower than those in A. chilensis (Fig. 5F) and A. yanezi (Fig. 7F), and an acuminate, arched solenomere (sl); antetorsal process (atp) thickened, almost as long as the tp (Fig. 9C–F). First leg-pair with subtriangular pfp (Fig. 9A).</p><p>Etymology</p><p>The species epithet honours Francisco Silva González (1933–1990), the only Chilean millipede specialist in history.</p><p>Material examined</p><p>Holotype</p><p>CHILE – Maule Region • ♂; south of <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-72.4229&amp;materialsCitation.latitude=-35.4563" title="Search Plazi for locations around (long -72.4229/lat -35.4563)">Constitución</a>; 35.4563° S, 72.4229° W; 238 m a.s.l.; 12 Jul. 2012; G. Valenzuela D. leg.; MNHNCL 8449.</p><p>Paratypes</p><p>CHILE – Maule Region • 1 ♀; same data as for holotype; MNHNCL 8450 • 1 ♂; same data as for holotype; MZUC-CCC 48107 • 1 ♀; same data as for holotype; MZUC-CCC 48108 .</p><p>Description (male holotype, MNHNCL 8449)</p><p>MEASUREMENTS. Length ca 4.3 cm, vertical diameter 3.2 mm, width 3.3 mm. 46 podous rings, no apodous ring in front of telson.</p><p>COLOR. After recent fixation in alcohol. Head, antennae, and collum blackish (Fig. 8A–C); body rings blackish in general, posterior margin of metazonites with brownish to amber colored; telson blackish (Fig. 8D), slightly faded; legs blackish, also faded by alcohol (Fig. 8C–D).</p><p>HEAD. Eyes each with ca 29 ommatidia in five horizontal rows (Fig. 8C). Antennae very short, reaching back to ring 2 when stretched; fifth and sixth antennomere with distodorsal patch of short sensilla basiconica, seventh antennomere with distal margin covered by tiny conical setae; last three antennomeres setose (Fig. 8B). Mandibles with stipital lobes evident. Gnathochilarium with stipites slightly swollen distally (Fig. 8A); mentum heptagonal, with deep concavity; long setae marginally on apical part of lamellae linguales and stipites.</p><p>COLLUM. Smooth, with only one lateral diagonal furrow; unornamented and very slightly extended in an anterior lateral lobe (Fig. 8C).</p><p>BODY RINGS. Mostly smooth, without carinae or granulation (Fig. 8C–D). Prozonites with usual fine ring furrows in anterior part. Metazonites striated, but striation not reaching ozopore level, dorsally smooth. Ozopore situated at mid-length of metazonite. No sigilla. Stigmatal grooves not extended.</p><p>TELSON. Preanal ring without process. Anal valves smooth, marginal lips not developed. Subanal scale broad triangular (Fig. 8D).</p><p>LEGS. Midbody legs short, ca ¼ of body maximum vertical diameter. With postfemoral and tibial adhesive pads from leg-pair 3 on; pads gradually smaller towards posterior rings. First leg-pair (Fig. 9A): coxosternum subrectangular, with lateral groups of few short setae, surface scattered with tiny setae. Prefemoral process (pfp) long, but not as long as prefemur, subtriangular, surface scattered with tiny setae. Prefemur subrectangular, surface scattered with tiny setae, distally with few short setae. Femur, postfemur, tibia, and tarsus with long setae ventrally. Second leg-pair (Fig. 9B): coxosternum short, smooth. Prefemur slightly compressed dorsoventrally, with paramedian row of large setae; remaining podomeres setose, with long setae ventrally; tarsal claw present. Penes (pn) located at proximal region of second leg-pair, composed of two entirely separate parts with markedly rounded tips extended in short laminar processes also rounded distally; gonopore positioned distally, not setose.</p><p>GONOPOD. Sternum short, trapezoidal. Proplica (pp) ca as long as metaplica (mp) (Fig. 9C–D), parallelsided, mesal margin curved; pp constricted basally, swollen and rounded distally, with few very short distal setae (Fig. 9C). Metaplica (mp) not complex (Fig. 9C–D); mesal margin thickened, laterally in contact with pp almost along its entire length; mp excavated distally, where antetorsal process (atp) emerges (Fig. 9C); mesoapical metaplica process (map) swollen, rounded (Fig. 9C–D); distolateral metaplica process (dmp) extended from mp excavation, thickened, pointed, directed diagonally ectad (Fig. 9C–E). Telopodite (tp) long, reaching in length pp when stretched, thickened, with torsion of 360° basally (Fig. 9C–D); tp distally diverging in lamellar branch (ltp) and in seminal branch where solenomere (sl) is located (Fig. 9E); ltp curved over seminal branch, not broad, smooth; seminal groove (sg) running marginally on seminal branch (Fig. 9E); antetorsal process (atp) thickened (Fig. 9C, E), curved over telopodite (tp) and directed posteriorly (Fig. 9E); atp as long as tp; sl arched, pointed, not covered by ltp.</p><p>Distribution</p><p>Known only from Constitución, Maule Region (Fig. 1).</p><p>Remarks</p><p>A large difference in the number of body rings has been observed among species of Autostreptus . Autostreptus silvagonzalezi sp. nov. presents 46 rings, while A. chilensis has 58–61, and A. yanezi has 69–74 rings. Although this difference is considerable (almost 30 rings between A. silvagonzalezi and A. yanezi), especially for an endemic, short-range genus, it is based on only a few adults of the former species. In this context, we expect to collect additional specimens, particularly from regions beyond the type locality, to better assess the variation among species of Autostreptus .</p></div>	https://treatment.plazi.org/id/03CA7512FFD0575AFDD82799E91C2E94	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	Parra-Gómez, Antonio;Iniesta, Luiz F. M.;Morales, Jesús A.	Parra-Gómez, Antonio, Iniesta, Luiz F. M., Morales, Jesús A. (2025): Revisiting the poorly known Chilean genus Autostreptus Silvestri, 1905 (Diplopoda, Spirostreptida, Spirostreptidae) with the description of a new species. European Journal of Taxonomy 1004: 237-258, DOI: 10.5852/ejt.2025.1004.2975, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2975/13405
03CA7512FFCC575AFF2023CCE8702821.text	03CA7512FFCC575AFF2023CCE8702821.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Autostreptus Silvestri 1905	<div><p>Key to males of Autostreptus</p><p>1. Telopodite (tp) with a broad, lamellar expansion (ltp) (Figs 5D–E, 7D–E); ltp covering distally the solenomere (sl), and with its margin thickened (Figs 5F, 7F) .......................................................... 2</p><p>– Telopodite (tp) with a thick, but not broad lamellar expansion (ltp) (Fig. 9C–F) ............................... ..................................................................................................................... A. silvagonzalezi sp. nov.</p><p>2. First leg-pair with subtriangular prefemoral process (pfp) (Fig. 5A); ltp with a protruding serrated zone, hidden by lamellar expansion (Fig. 5F) ....................................... A. chilensis (Gervais, 1847)</p><p>– First leg-pair with subrectangular prefemoral process (pfp) (Fig. 7A); ltp with a distally bifurcated process, hidden by lamellar expansion (Fig. 7F) .......................... A. yanezi Demange &amp; Silva, 1971</p></div>	https://treatment.plazi.org/id/03CA7512FFCC575AFF2023CCE8702821	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	Parra-Gómez, Antonio;Iniesta, Luiz F. M.;Morales, Jesús A.	Parra-Gómez, Antonio, Iniesta, Luiz F. M., Morales, Jesús A. (2025): Revisiting the poorly known Chilean genus Autostreptus Silvestri, 1905 (Diplopoda, Spirostreptida, Spirostreptidae) with the description of a new species. European Journal of Taxonomy 1004: 237-258, DOI: 10.5852/ejt.2025.1004.2975, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2975/13405
