taxonID	type	description	language	source
DA29B665D723F91BFF10A33498ADFB1E.taxon	description	The following characters are shared by both new Seira species and are not repeated in the descriptions: Scales heavily ciliate, oval or elongated and apically rounded, rarely pointed or irregular, present on Ant I to proximal half of Ant III, head, thorax, abdomen, legs (except empodia), anterior collophore, dorsal and ventral manubrium and dens ventrally (Figs 1 – 2, 3 F, 5 F – G, 6, 7 E, 10 E – F). Mac heavily ciliate, apically strongly or weakly foot shaped or acuminate. Mic smooth and apically ramificate or simple. Bothriotricha with accessory chaetae ciliated and lanced-shaped (Fig. 1). Head. Antennae shorter than the trunk length (Figs 2, 6). Ant IV not annulated, with an apical bulb apically bilobed. Ant I with 3 proximal sens-like smooth chaetae (Figs 3 B, 7 B). Eyes 8 + 8, G and H smaller, with 5 interocular chaetae (q, s, p, r, t); 2 pairs of bothriotricha (1 subantennal and 1 post-ocellar) present (Figs 3 E, 7 E). Four pointed labral papillae (inner and outer) present (Figs 3 C, 7 C); labral formula with 4 (a 1 – 2), 5 (m 0 – 2), 5 (p 0 – 2) smooth chaetae, a 1 not thicker than the others, p 0 – 1 larger than the others (Fig. 3 C); four prelabral (pl 1 – 2) ciliate chaetae (Figs 3 C, 7 D). Maxillary palp with smooth t. a. and b. c.; sublobal plate with 3 inner subequal appendages and 1 distal minute appendix, all smooth and acuminate. Labial palp with five main papillae (A – E) plus one hypostomal papilla (H), with 0, 5, 0, 4,4, 2 guard appendages, respectively; labial papilla E l. p. pointed and surpassing the papilla apex (Fig. 3 D). Labium with 5 proximal smooth chaetae (Fig. 3 F). Basolateral and basomedian labial fields with chaetae a 1 – 5 smooth (a 2 larger than the others), M 1 – 2, E, L 1 – 2 ciliated, r reduced to a small smooth spine (Fig. 3 F). Thorax and abdomen. Th II not strongly projected over the head, mesothoracic hood absent (Figs 2, 6); Abd II – IV bothriotrichal formula as 2 (a 5, m 2), 3 (a 5, m 2, m 5), 3 (T 2, T 4, D 3); Th II – Abd V with ms and sens formula as 1,0 | 1, 0,1, 0,0 and 1, 1 | 0,2, 2, +, 3, respectively (Figs 4, 8). Legs. Tibiotarsus I – III outer side distally with 1 tenent hair finely ciliate and apically capitate; inner side of tibiotarsus III with 1 distal smooth chaeta (Fig. 5 E). Pretarsus I – III with one minute smooth chaeta on both sides (Fig. 5 E). Unguis outer side with a pair of developed lateral teeth (as in Lepidocyrtinus Börner, 1903) and one unpaired proximal tooth flattened; inner side with 4 teeth, 2 paired basal (b. t.) and 2 unpaired distally (m. t. and a. t.). Unguiculi with 4 lamellae (ai, ae, pi, pe) (Fig. 5 E). Genital plate. Female with two pairs (superior and inferior) of small smooth chaetae, without other modifications. Male’s plate circinate, with 3 unequal eugenital chaetae and about 15 (1 unpaired superior) circumgenital chaetae, all smooth (Fig. 10 H). Mucro falcate (distal tooth), without the basal spine; proximal tooth reduced and enveloped by the dens cuticle.	en	Cipola, Nikolas Gioia, Godeiro, Nerivania Nunes, Bellini, Bruno Cavalcante (2025): Two new species of Seira Lubbock (Collembola: Entomobryidae: Seirinae) from South American mountains, with chaetotaxy plurichaetosis on the fourth abdominal segment. Zootaxa 5620 (1): 175-195, DOI: 10.11646/zootaxa.5620.1.8, URL: https://doi.org/10.11646/zootaxa.5620.1.8
DA29B665D721F91FFF10A1659B05FB6E.taxon	description	Figs 1 – 5, 11, Table 1	en	Cipola, Nikolas Gioia, Godeiro, Nerivania Nunes, Bellini, Bruno Cavalcante (2025): Two new species of Seira Lubbock (Collembola: Entomobryidae: Seirinae) from South American mountains, with chaetotaxy plurichaetosis on the fourth abdominal segment. Zootaxa 5620 (1): 175-195, DOI: 10.11646/zootaxa.5620.1.8, URL: https://doi.org/10.11646/zootaxa.5620.1.8
DA29B665D721F91FFF10A1659B05FB6E.taxon	diagnosis	Diagnosis. Body whitish anteriorly (except antennae) and yellowish posteriorly (except furcula), with dark navy-blue pigments distally on the ventral plate of the Abd IV and distal and proximal regions of femur I – III (Fig. 2); Ant IV not annulated with an apical bulb bilobed; Ant II – I respectively with 5 and 1 dorsal mac, respectively (Fig. 3 B); labral papillae conical and subequal (Fig. 3 C); labial papilla E l. p. pointed (Fig. 3 D); head macrochaetotaxy with 4 ‘ A’, 2 ‘ M’, 2 – 3 ‘ S’, 4 ‘ Pa’, 1 ‘ Pm’, 3 ‘ Pp’ and 1 ‘ Pe’ mac, respectively (Fig. 3 E); postlabial region with 3 mic and lacking H 1 – 2 chaetae (Fig. 3 F); Th II a (excluding the anterior collar), m and p series with 6, 6 – 7 and 12 posterior mac, respectively; Th III – Abd III with 4, 0, 3 and 1 inner mac, respectively; Abd III with 8 lateral mac; Abd IV with 8 inner and 43 lateral mac / mes, and 6 mes posteriorly (Fig. 4); trochanteral organ with about 49 spine-like chaetae (Fig. 5 D); unguis lateral teeth developed, a. t. present; unguiculus acuminate with pe lamella serrated (Fig. 5 E); collophore anteriorly with 5 – 6 proximal spines, 3 elongated mac and 2 normal distal mac, posteriorly with 3 smooth spines on each side (Fig. 5 F).	en	Cipola, Nikolas Gioia, Godeiro, Nerivania Nunes, Bellini, Bruno Cavalcante (2025): Two new species of Seira Lubbock (Collembola: Entomobryidae: Seirinae) from South American mountains, with chaetotaxy plurichaetosis on the fourth abdominal segment. Zootaxa 5620 (1): 175-195, DOI: 10.11646/zootaxa.5620.1.8, URL: https://doi.org/10.11646/zootaxa.5620.1.8
DA29B665D721F91FFF10A1659B05FB6E.taxon	description	Description. Total length (head + trunk) of specimens 1.45 – 2.47 mm (n = 4), holotype 2.47 mm. Specimens ground color pale white (head, Th II to Abd I, collophore, coxae I – III and furcula) and yellowish (other body regions), with dark navy-blue pigments on distal and proximal Ant IV, proximal Ant III – II, distal ventral plate of the Abd IV and distal and proximal regions of the femur I – III, including an irregular stripe (present or absent) joining both femoral patches on the anterior side; eyepatches black (Fig. 2). Head. Ratio antennae: trunk = 1: 1.20 – 1.51 (n = 4), holotype 1: 1.20; antennal segments ratio as I: II: III: IV = 1: 1.33 – 1.82: 1.58 – 1.74: 1.98 – 2.43, holotype 1: 1.82: 1.74: 2.43. Ant III distally with 2 finger-shaped sens (of the apical organ), 3 guard sens and at least 7 sens of different sizes and shapes (Fig. 3 A). Ant II – I with 5 and 1 dorsal mac, respectively (Fig. 3 B). Labral papillae subequal in size (Fig. 3 C). Clypeal formula with 4 (l 1 – 2), 6 (f), 3 (pf 0 – 1) ciliated chaetae, l 1 – 2 strongly acuminate, 1 frontal smaller than the others, others subequal (Fig. 3 C). Maxillary palp b. c. slightly thicker and 1.04 longer than the t. a. Head dorsal chaetotaxy (Fig. 3 E) with 8 ‘ An’ (An 1 a – 1, An 2 – 3), 4 ‘ A’ (A 0, A 2 – 3, A 5), 2 ‘ M’ (M 1, M 4), 2 – 3 ‘ S’ (S 2 – 3, S 7), 4 ‘ Pa’ (Pa 1 – 3, Pa 5), 1 ‘ Pm’ (Pm 3), 3 ‘ Pp’ (Pp 1 – 3) and 1 ‘ Pe’ (Pe 3) mac. Ventral chaetotaxy with 12 – 13 ciliated chaetae in the postlabial field, with 4 (G 1 – 4), 1 – 2 (H 3 – H 4) and 4 (J 1 – 4) chaetae, J 2 plus 2 median chaetae as mic, b. c. and J 1 elongated, others subequal (Fig. 3 F). Thorax chaetotaxy (Fig 4 A). Th II a, m and p series with 6 (two in a 4 complex, a 5 – a 5 i 2, excluding the anterior collar), 6 – 7 (m 1 – 1 i, m 2 – 2 i, m 4 i – 4 p) and 12 (p 1 i 2 – p 1 p, p 2 – 2 a, p 2 ea – 2 ep, p 3, p 5) mac, respectively. Th III a, m and p series with 0, 1 (m 6) and 4 (p 1, p 2 – 2 a, p 3) mac, respectively. Ratio Th II: III = 1.65 – 1.59: 1 (n = 4), holotype 1.65: 1. Abdomen chaetotaxy (Figs 4 B – C). Abd I without mac, a, m and p series with 6 (a 1 – 1 e, a 2 – 3, a 5 – 6), 7 (m 2 i – 2, m 3, m 4 – 4 i, m 5 – 6) and 2 (p 5 – 6) mic, respectively. Abd II a, m and p series with 1 (a 2), 3 (m 3 – 3 e, m 5), 0 mac, respectively; a 5 and m 2 bothriotricha with 7 and 3 accessory chaetae, respectively. Abd III a, m and p series with 2 (a 7 – 8?), 4 (m 3, am 6, pm 6, m 7) and 3 (p 6, 6 pe, p 7) mac, respectively; m 2 bothriotrichum with 5 accessory chaetae, bothriotricha a 5 and m 5 with 11 accessory chaetae between them. Abd IV with 8 inner mac on A – T series (A 3, A 5, si, B 3 – 6, sm) and about 17 mac and 26 mes laterally on D – Fe series (part of homologies and variations difficult to determine); 10 sens (ps type I, others type II) and 6 posterior mes. Abd V a, m and p series with 2 (a 5 – 6), 3 (m 2 – 3, m 5) and 5 (p 1, p 3 – 6) mac, respectively. Ratio Abd III: IV = 1: 4.43 – 6.84 (n = 4), holotype 1: 5.06. Body psp pattern (Fig. 4): Th II – Abd IV dorsally with 1 psp, other regions not visible. Legs. Subcoxa I with one row of 6 chaetae and 2 psp; subcoxa II with an ‘ a’ row of 14 chaetae, ‘ p’ row of 4 chaetae and 2 psp; subcoxa III with one row of 10 chaetae and 2 posterior psp (Figs 5 A – C). Trochanteral organ with about 49 spine-like chaetae (Fig. 5 D). Tibiotarsus I – III inner side with at least 7 mac. Unguis b. t. on proximal one third, m. t. on distal one third and subequal to b. t., a. t. on distal one ninth and minute. Unguiculus with all lamellae acuminate and smooth (ai, ae, pi, pe), except pe serrate on its distal two thirds, with 1 minute proximal stronger tooth (Fig. 5 E). Ratio of empodial complex III; unguis: unguiculus = 1: 0.71; tenent hair 1.36 larger than the unguis outer edge; tibiotarsal smooth chaeta 1.14 larger than the unguiculus. Collophore (Fig. 5 F). Anterior side with 11 – 12 chaetae, 5 – 6 proximal smooth spine-like chaetae, 1 thin and smaller proximal chaetae, 2 median and 1 distal ciliated mac apically acuminate, plus 2 distal mac; posterior side with 3 subapical spines and 1 apical smooth chaeta; lateral flap with about 16 chaetae, 5 smooth (2 larger than the others) and 11 ciliate. Furcula. Manubrium ventral chaetotaxy with 1, 2, 2, 2 / 4 (subapical), 16 – 18 (apical) ciliated chaetae, subapical chaetae subequal in size, apical chaetae distribution eventually asymmetrical (Fig. 5 G). Manubrial plate with 3 psp and 8 – 10 ciliated chaetae, 2 inner larger than the others, others subequal (Fig. 5 H).	en	Cipola, Nikolas Gioia, Godeiro, Nerivania Nunes, Bellini, Bruno Cavalcante (2025): Two new species of Seira Lubbock (Collembola: Entomobryidae: Seirinae) from South American mountains, with chaetotaxy plurichaetosis on the fourth abdominal segment. Zootaxa 5620 (1): 175-195, DOI: 10.11646/zootaxa.5620.1.8, URL: https://doi.org/10.11646/zootaxa.5620.1.8
DA29B665D721F91FFF10A1659B05FB6E.taxon	materials_examined	Type Material. Holotype male on slide (INPA-CLL 000402): Brazil, Roraima, Caracaraí municipality, National Park “ Serra da Mocidade ”, 01 ° 42 ’ N, 61 ° 44 ’ W (Fig. 11), Amazon forest, 1050 m, 25. i ‒ 06. ii. 2016, malaise trap, M Oliveira, FF Xavier & T Mahlmann coll. 9 paratypes on slides: 2 males and 4 females (INPA-CLL 000403 - 408) plus 1 subadult male, 1 female and 1 juvenile (CC / UFRN), same data of the holotype.	en	Cipola, Nikolas Gioia, Godeiro, Nerivania Nunes, Bellini, Bruno Cavalcante (2025): Two new species of Seira Lubbock (Collembola: Entomobryidae: Seirinae) from South American mountains, with chaetotaxy plurichaetosis on the fourth abdominal segment. Zootaxa 5620 (1): 175-195, DOI: 10.11646/zootaxa.5620.1.8, URL: https://doi.org/10.11646/zootaxa.5620.1.8
DA29B665D721F91FFF10A1659B05FB6E.taxon	etymology	Etymology. The epithet is proposed (in apposition) in honor of Antonio Emilio Francisco Cipola (in memoriam, † 11 February 2019), father of the first author.	en	Cipola, Nikolas Gioia, Godeiro, Nerivania Nunes, Bellini, Bruno Cavalcante (2025): Two new species of Seira Lubbock (Collembola: Entomobryidae: Seirinae) from South American mountains, with chaetotaxy plurichaetosis on the fourth abdominal segment. Zootaxa 5620 (1): 175-195, DOI: 10.11646/zootaxa.5620.1.8, URL: https://doi.org/10.11646/zootaxa.5620.1.8
DA29B665D721F91FFF10A1659B05FB6E.taxon	discussion	Remarks. See remarks of Seira paramilloensis sp. nov..	en	Cipola, Nikolas Gioia, Godeiro, Nerivania Nunes, Bellini, Bruno Cavalcante (2025): Two new species of Seira Lubbock (Collembola: Entomobryidae: Seirinae) from South American mountains, with chaetotaxy plurichaetosis on the fourth abdominal segment. Zootaxa 5620 (1): 175-195, DOI: 10.11646/zootaxa.5620.1.8, URL: https://doi.org/10.11646/zootaxa.5620.1.8
DA29B665D725F908FF10A1759DD7FDB2.taxon	description	Figs 1, 6 – 11, Table 1	en	Cipola, Nikolas Gioia, Godeiro, Nerivania Nunes, Bellini, Bruno Cavalcante (2025): Two new species of Seira Lubbock (Collembola: Entomobryidae: Seirinae) from South American mountains, with chaetotaxy plurichaetosis on the fourth abdominal segment. Zootaxa 5620 (1): 175-195, DOI: 10.11646/zootaxa.5620.1.8, URL: https://doi.org/10.11646/zootaxa.5620.1.8
DA29B665D725F908FF10A1759DD7FDB2.taxon	diagnosis	Diagnosis. Anterior antennae orange, femur I – III distally with a dark navy-blue spot (Fig. 6); Ant IV not annulated with an apical bulb bilobed; Ant II – I respectively with 5 and 0 dorsal mac, respectively (Fig. 7 B); labral papillae conical, outer papillae smaller than the inner ones (Fig. 7 C); labial papilla E l. p. pointed (as in Fig. 3 D); head macrochaetotaxy with 3 ‘ A’, 2 ‘ M’, 3 ‘ S’, 3 ‘ Pa’, 1 ‘ Pm’, 2 ‘ Pp’ and 0 ‘ Pe’ mac, respectively (Fig. 7 E); postlabial region with 4 chaetae slightly smaller than the others, H 1 – 2 chaetae absent (Fig. 7 F); Th II a (excluding the anterior collar), m and p series with 4, 6 and 10 posterior mac, respectively; Th III – Abd III with 4, 0, 4 and 1 inner mac, respectively; Abd III with 7 lateral mac; Abd IV with 10 inner and 32 lateral mac / mes, and 8 mes posteriorly (Fig. 8); trochanteral organ with about 63 spine-like chaetae (Fig. 10 D); unguis lateral teeth developed, a. t. present (as Fig. 5 E); unguiculus acuminate with pe lamella serrated, lacking any stronger proximal teeth; collophore anteriorly with 8 – 10 proximal spines, 3 elongated mac and 2 normal distal mac, posteriorly with 3 smooth spines on each side plus 1 ciliate chaeta generally present (Fig. 10 E).	en	Cipola, Nikolas Gioia, Godeiro, Nerivania Nunes, Bellini, Bruno Cavalcante (2025): Two new species of Seira Lubbock (Collembola: Entomobryidae: Seirinae) from South American mountains, with chaetotaxy plurichaetosis on the fourth abdominal segment. Zootaxa 5620 (1): 175-195, DOI: 10.11646/zootaxa.5620.1.8, URL: https://doi.org/10.11646/zootaxa.5620.1.8
DA29B665D725F908FF10A1759DD7FDB2.taxon	description	Description. Total length (head + trunk) of specimens 2.29 – 3.88 mm (n = 4), holotype 2.55 mm. Specimens ground color pale white (in the majority of the body) to orange (antennal parts), with dark navy-blue pigments on distal Ant IV, proximal and distal Ant I, and femur I – III distally; eyepatches black (Fig. 6). Head. Ratio antennae: trunk = 1: 1.47 – 1.70 (n = 4), holotype 1: 1.55; antennal segments ratio as I: II: III: IV = 1: 1.47 – 1.56: 1.53 – 1.69: 1.98 – 2.10, holotype 1: 1.56: 1.69: 2.10. Ant III distally with 1 finger-shaped and 1 conical sens (apical organ), 3 guard sens and at least 15 sens of different sizes and shapes (Fig. 7 A). Ant II – I respectively with 5 and 0 dorsal mac (Fig. 7 B). Labral outer papillae smaller than inner papillae (Fig. 7 C). Clypeal formula with 4 (l 1 – 2), 4 – 6 (f, 2 distally present or absent), 3 (pf 0 – 1) ciliated chaetae, l 1 – 2 strongly acuminate, 1 frontal smaller than the others, others subequal (Fig. 7 D). Maxillary palp b. c. slightly thicker and 1.14 longer than the t. a. Head dorsal chaetotaxy (Fig. 7 E) with 8 – 9 ‘ An’ (An 1 a – 1, An 2 – 3), 3 ‘ A’ (A 0, A 2 – 3), 2 ‘ M’ (M 1, M 4), 3 ‘ S’ (S 3, S 6 – 7), 3 ‘ Pa’ (Pa 1, Pa 3, Pa 5), 1 ‘ Pm’ (Pm 3), 2 ‘ Pp’ (Pp 1 – 2) and 0 ‘ Pe’ mac. Ventral chaetotaxy with 14 ciliated chaetae in the postlabial field, with 4 (G 1 – 4), 2 (H 3 – H 4) and 4 (J 1 – 4) chaetae, 4 chaetae thinner and smaller than the others (G 2 – 3, J 2 and one unnamed), b. c. elongated, others subequal (Fig. 7 F). Thorax chaetotaxy (Fig 8 A). Th II a, m and p series with 4 (a 5 – a 5 i 2, excluding the anterior collar), 6 (m 1, m 2 – 2 i, m 4 i – 4 p) and 10 (p 1 ip – p 1 p, p 2, p 2 ea – 2 ep, p 3 – 3 p) mac, respectively. Th III a, m and p series with 0, 1 (m 6) and 4 (p 1, p 2 – 2 a, p 3) mac, respectively. Ratio Th II: III = 1.79 – 1.44: 1 (n = 4), holotype 1.53: 1. Abdomen chaetotaxy (Figs 8 B – C). Abd I without mac, a, m and p series with 6 (a 1 – 1 e, a 2 – 3, a 5 – 6), 6 (m 2, m 3, m 4 – 4 i, m 5 – 6) and 2 (p 5 – 6) mic, respectively. Abd II a, m and p series with 1 (a 2), 4 (m 3 – 3 ep, m 5), 0 mac, respectively; a 5 and m 2 bothriotricha with 6 and 3 accessory chaetae, respectively. Abd III a, m and p series with 2 (a 7 – 8?), 3 (m 3, am 6, pm 6) and 3 (p 6 – 6 pe, p 7) mac, respectively; m 2 bothriotrichum with 5 accessory chaetae, bothriotricha a 5 and m 5 with 11 accessory chaetae between them. Abd IV with 10 inner mac on A – T series (A 3, A 5 a – 6, si, B 3 – 6, sm) and about 13 mac and 19 mes laterally on D – Fe series (part of homologies and variations difficult to determine); 13 sens (ps type I, others type II) and 8 posterior mes. Abd V a, m, p and pp series with 2 (a 5 – 6), 3 (m 2 – 3, m 5), 6 (p 1, p 3 – 6 e) and 2 (pp 5 pi, pp 6) mac, respectively. Ratio Abd III: IV = 1: 3.89 – 4.44 (n = 4), holotype 1: 4.05. Body psp pattern (Figs 7 A – B, 8 A – C, 9, 10 A – C, E, G). Dorsally: clypeus, on Ant I outer (1) and inner (1) sides, Th II – Abd IV dorsally (1), Abd IV posterior membrane (9), coxae I – III (2, 3 – 4, 2), manubrial basis (1), manubrial plate (3, 4 in one specimen on the more lateral part), and proximal dens (4 – 8); laterally: Th III – Abd III (0), BP 4 (0); ventrally: Ant III (4 – 5), Ant II (1 – 3), Ant I (1 – 4), Th I – III (1), collophore anteriorly (1) and posteriorly (1), Abd. II, between collophore and tenaculum (2, 1 of them unpaired), tenaculum posteriorly (6 – 9, 1 – 3 of them unpaired), Abd IV (0) and anterior to genital plate (0). Legs. Subcoxa I with one row of 5 – 6 chaetae; subcoxa II with an ‘ a’ row of 13 – 15 chaetae, ‘ p’ row of 6 – 7 chaetae; subcoxa III with one row of 12 – 13 chaetae (Figs 10 A – C). Trochanteral organ with about 63 spine-like chaetae (Fig. 10 D). Tibiotarsus I – III inner side with at least 9 mac. Unguis b. t. slightly more proximal than the ungual half, m. t. on distal one third and subequal to b. t., a. t. on distal one ninth and minute (as in Fig. 5 E). Unguiculus with all lamellae acuminate and smooth (ai, ae, pi, pe), except pe serrate on its median region, lacking any remarkable stronger proximal tooth. Ratio of empodial complex III; unguis: unguiculus = 1: 0.57; tenent hair 1.07 larger than the unguis outer edge; tibiotarsal smooth chaeta 1.48 larger than the unguiculus. Collophore (Fig. 10 E). Anterior side with 14 – 16 chaetae, 8 – 10 proximal smooth spine-like chaetae, 1 thin and smaller proximal chaeta, 2 median and 1 distal ciliated mac apically acuminate plus 2 distal mac; posterior side with 3 subapical spines, 1 weakly ciliated chaeta (present or absent), and 1 apical smooth chaeta; lateral flap with about 15 – 20 chaetae, 5 – 6 smooth (2 larger than the others) and 10 – 14 ciliate. Furcula. Manubrium ventral chaetotaxy with 1, 2, 2, 2 / 4 (subapical), 18 (apical) ciliated chaetae, subapical chaetae unequal in size (Fig. 10 F). Manubrial plate with 3 psp and 6 – 11 ciliated chaetae, 2 inner and 2 outer larger, 2 smaller than the others, others subequal (Fig. 10 G). Atypical variations. Within the type series, atypical features observed only on one side of one specimen were not considered here as a variation of the species, such as: basomedian labial field with 1 extra ciliate chaeta (M 1 e) and R chaeta ciliate, head Pp 5 chaeta as a mac and Abd IV sm chaeta as a mic. Chaetotaxy of immature. In one juvenile, probably in the fourth instar, the following reductions in the dorsal macrochaetaxy (mac absent or as mic): 2 (An 2 p - 2 p 2) on head, 6 – 8 (m 2 i, m 4 i, p 1 i, p 1 ip, p 1 p, p 2 ep, p 2 ea, p 3 p) on Th II (p 1 p and p 2 ep mac or mic), 1 (p 2 a) on Th III, and 1 (m 3 ep) on Abd II. The Abd IV of this immature have reduction of 5 inner mac (A 3, A 5 a, A 5, A 6, B 3) seen in the adults, which appear as mic, as well as at least 10 outer extra numerary chaetae, 16 of which (mac / mes) are of uncertain homology (Fig. 8 D). In the labial basomedian field, M 2 chaeta is absent and the manubrial plate has only 2 chaetae and no psp in this immature.	en	Cipola, Nikolas Gioia, Godeiro, Nerivania Nunes, Bellini, Bruno Cavalcante (2025): Two new species of Seira Lubbock (Collembola: Entomobryidae: Seirinae) from South American mountains, with chaetotaxy plurichaetosis on the fourth abdominal segment. Zootaxa 5620 (1): 175-195, DOI: 10.11646/zootaxa.5620.1.8, URL: https://doi.org/10.11646/zootaxa.5620.1.8
DA29B665D725F908FF10A1759DD7FDB2.taxon	materials_examined	Type Material. Holotype female on slide (UNIANDES): Colombia, Antioquia Department, Jardín municipality, “ Mesenia-Paramillo ” Natural Reserve, 05 ° 29 ’ 45 ” N, 75 ° 53 ’ 21 ” W (Fig. 11), Andean mountain, 3.000 m., vii. 2020, malaise trap, L Mazariegos coll. 15 paratypes: 1 male, 5 females and 1 juvenile on slides (UNIANDES), 4 females (INPA-CLL 0000409 – 412) 2 females on slides (CC / UFRN), and 2 females on slides (SNHM), same data of the holotype.	en	Cipola, Nikolas Gioia, Godeiro, Nerivania Nunes, Bellini, Bruno Cavalcante (2025): Two new species of Seira Lubbock (Collembola: Entomobryidae: Seirinae) from South American mountains, with chaetotaxy plurichaetosis on the fourth abdominal segment. Zootaxa 5620 (1): 175-195, DOI: 10.11646/zootaxa.5620.1.8, URL: https://doi.org/10.11646/zootaxa.5620.1.8
DA29B665D725F908FF10A1759DD7FDB2.taxon	etymology	Etymology. Refers to type locality where the new species was found, “ Mesenia-Paramillo ” Natural Reserve.	en	Cipola, Nikolas Gioia, Godeiro, Nerivania Nunes, Bellini, Bruno Cavalcante (2025): Two new species of Seira Lubbock (Collembola: Entomobryidae: Seirinae) from South American mountains, with chaetotaxy plurichaetosis on the fourth abdominal segment. Zootaxa 5620 (1): 175-195, DOI: 10.11646/zootaxa.5620.1.8, URL: https://doi.org/10.11646/zootaxa.5620.1.8
DA29B665D725F908FF10A1759DD7FDB2.taxon	discussion	Remarks. Seira paramilloensis sp. nov. and Seira antonioi sp. nov. resemble 10 other species of the genus by their Abd I devoid of mac: S. andensis Jacquemart, 1980 (1980 b), S. glabra Godeiro & Bellini, 2013, S. lepidochaetosa Cipola & Bellini, 2018 (2018 b), S. metafemurata Cipola & Bellini, 2018, S. mirianae Arlé & Guimaraes, 1981, S. paucisetosa Jacquemart, 1980 (1980 a), S. pietata Oliveira, Ferreira & Zeppelini, 2020, S. praiana Bellini, Fernandes & Zeppelini, 2010, S. semicaerulea Cipola & Bellini, 2018 (2018) and S. yemenensis Barra, 2004 (Table 1). However, our new species can be readily separated from these species by: Ant IV apical bulb bilobed (unilobed in S. glabra, S. praiana and eventually in S. mirianae), prelabral chaetae ciliate (smooth in S. pietata), unguis a. t. present (absent in S. mirianae); unguiculus ai lamella acuminate (truncate in S. lepidochaetosa and S. semicaerulea, excavate in S. metafemurata), and manubrial plate devoid of blunt mac (present in S. metafemurata). On the head dorsal chaetotaxy, the new species differ from the others by the absence of M 2 (present in S. pietata, S. praiana) and S 0 mac (present in S. andensis, S. mirianae, S. pietata, S. yemenensis), and S 7 mac present (absent in S. andensis, S. metafemurata, S. paucisetosa, S. yemenensis) plus 6 – 9 postoccipital series mac (3 or less in S. lepidochaetosa, S. metafemurata, S. mirianae, S. paucisetosa, S. pietata and S. semicaerulea). On Th II, both new species have 3 – 4 mac on m 1 – 2 complex (less in S. glabra, S. metafemurata, S. paucisetosa, S. praiana and 6 in S. mirianae), and they are devoid of p 2 p mac (present in S. andensis and S. mirianae). Also, on Th III they have 4 inner mac (all other species with a different number of mac in this tergite, except S. yemenensis), Abd IV with 8 – 10 inner mac (7 or less in S. glabra, S. metafemurata, S. paucisetosa, S. yemenensis), plus numerous extra mac and mes laterally (absent in the previously described species). Without a doubt, the high number of mac and mes laterally in the Abd IV is atypical in the genus, very likely unique since it was not reported before to other Seira taxa, and it may suggest a closer relationship between the two new species. Even so, S. antonioi sp. nov. differs from S. paramilloensis sp. nov. by: Ant I with 1 dorsal mac (absent in S. paramilloensis sp. nov.), 4 mac present on the head (A 5, Pa 2, Pp 3 and Pe 3) and 1 absent (S 6), while in S. paramilloensis sp. nov. is the opposite. On Th II, S. antonioi sp. nov. differs by 6 anterior (4 in S. paramilloensis sp. nov.), and 4 posterior mac (p 1 i 2, p 2 a and p 5 mac present, p 3 p absent) (the opposite in S. paramilloensis sp. nov.). Still regarding the dorsal chaetotaxy, S. antonioi sp. nov. has 3 inner mac on Abd II (4 in S. paramilloensis sp. nov.), Abd III with 8 lateral mac (7 in S. paramilloensis sp. nov.), Abd IV with 8 inner mac and about 43 lateral mac / mes (10 inner and 32 lateral in S. paramilloensis sp. nov.), plus 6 mes posteriorly (8 in S. paramilloensis sp. nov.). Further differences between the new species and other Seira species without mac on Abd I are detailed in Table 1.	en	Cipola, Nikolas Gioia, Godeiro, Nerivania Nunes, Bellini, Bruno Cavalcante (2025): Two new species of Seira Lubbock (Collembola: Entomobryidae: Seirinae) from South American mountains, with chaetotaxy plurichaetosis on the fourth abdominal segment. Zootaxa 5620 (1): 175-195, DOI: 10.11646/zootaxa.5620.1.8, URL: https://doi.org/10.11646/zootaxa.5620.1.8
