Seira glabra Godeiro & Bellini, 2013

Godeiro, Nerivânia N. & Bellini, Bruno C., 2015, Two new species and two detailed chaetotaxy descriptions of Seira (Collembola: Entomobryidae) from Brazil, Zootaxa 3972 (2), pp. 208-230: 225-229

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http://dx.doi.org/10.11646/zootaxa.3972.2.4

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Seira glabra Godeiro & Bellini, 2013
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Seira glabra Godeiro & Bellini, 2013  detailed dorsal chaetotaxy

Figs 14–16View FIGURE 14View FIGURE 15View FIGURE 16

Analyzed material. Holotype male, Brazil, Paraíba, Areia 24–27.xi. 2011. Bellini, B.C. col. Paratypes: one male and one female, same data as holotype. Type material deposited at Collembola  Collection of Museu Nacional/ UFRJ, Rio de Janeiro, number 2416 CM/ MNRJ.

Dorsal head chaetotaxy. ‘An’ series with 9 + 9 setae; one microseta between An 1 and An 2 (atypical); one super-numerary macroseta next to An 3 a 2; three super-numerary microsetae next to An 3; ‘A’ series with A 4 present; A0, A 2, A 3 and A 5 as macrosetae; A 1 and A 4 as microsetae; three super-numerary microsetae above A0; ‘M’ series with 5 + 5 setae; M 1 and M 4 as macrosetae; M 2, M 3 and M 4 i as microsetae; one super-numerary microseta above M 3; ‘S’ series with 5 + 5 setae; S0 and S 4 absent (atypical); S 1 and S 6 as macrosetae; S 2 as macroseta or microseta; S 3 and S 5 as microsetae; Interocular series with 5 + 5 microsetae: r, s and t as mesosetae; p and q as microsetae; ‘Ps’ series with 3 + 3 microsetae (Ps 2, Ps 3 and Ps 5); Ps 4 absent (typical of Seira  , see Soto- Adames 2008); One supernumerary macroseta above Ps 5; ‘Pa’ series with 6 + 6 setae; Pa 1, Pa 3 and Pa 5 as macrosetae; Pa 4 as macroseta or microseta; Pa 2 as microseta; Pa 6 as post ocular trichobothrium; ‘Pm’ series with 2 + 2 microseta; Pm 1 as macroseta or microseta and Pm 3 as microseta; Pm 2 absent (typical of Seira  , see Soto- Adames 2008); ‘Pp’ series with 5 + 5 setae; Pp 1 and Pp 2 as macrosetae; Pp 3, Pp 4 and Pp 5 as microsetae ( Fig. 14View FIGURE 14).

Dorsal Th. II chaetotaxy. ‘a’ series (without anterior setal collar) with 6 + 6 setae; a 5 ip absent; a 2 p and a 5 i 2 p as microsetae; a 5 i 2, a 5 i, a 5, a 5 p as macrosetae; ‘m’ series with 10 + 10 or 11 + 11 setae; m 1 i, m 2 i, m 4 i absent; m 1 i 3, m 1 i 2, m 4 ip, m 5 a, m 5 and m 5 p as microsetae; m 1, m 2, m 4 i and m 4 p as macrosetae; m 4 can be present or absent; ‘p’ series with 15 + 15 setae; p 1 ip, p 2 p and p 6 e absent; p 1, p 2, p 2 ep, p 2 e and p 5 as macrosetae; p 1 i 2, p 1 i 2 p, p 1 p, p 1 i, p 2 a, p 2 ea, p 3, p 3 p and p 6 as microsetae; p 4 as macroseta or microseta ( Fig. 15View FIGURE 15 A).

Dorsal Th. III chaetotaxy. ‘a’ series with 7 + 7 microsetae (a 1, a 2, a 3, a 4, a 5, a 6 and a 7); a 1 a absent; ‘m’ series with 5 + 5 microsetae (m 4, m 5, m 6, m 6 p and m 7); m 1 i and m 1 absent; ‘p’ series with 9 + 9 setae; p 1 i absent; p 1, p 2 ea, p 2 a, p 2 e, p 4, p 5 and p 6 as microsetae; p 2 and p 3 as macrosetae; setula present near m 7 ( Fig. 15View FIGURE 15 B).

Dorsal Abd. I chaetotaxy. ‘a’ series with 6 + 6 microsetae (a 1 a, a 1, a 1 e, a 3, a 5 and a 6); a 2 and a 5 absent; setula present near a 6; ‘m’ series with 5 + 5 microsetae (m 2, m 3, m 4 i, m 4 and m 5); m 6 absent; ‘p’ series with 1 + 1 microsetae (p 6); p 5 absent (atypical) ( Fig. 15View FIGURE 15 C).

Dorsal Abd. II chaetotaxy. ‘a’ series with 7 + 7 setae; a 2 p, a 3, as, a 6 and a 7 as microsetae; a 2 as macroseta; a 5 as trichobothrium with 6 surrounding fan shaped scales; ‘m’ series with 8 + 8 setae; m 3 ep absent; m 3 ei, m 3 ea, m 6 and m 7 as microsetae; m 3, m 3 e and m 5 as macrosetae; m 2 as trichobothrium with 3 surrounding fan shaped scales; ‘p’ series with 3 + 3 microsetae (p 5, p 6 and p 7); se present as setula; el absent ( Fig. 15View FIGURE 15 D).

Dorsal Abd. III chaetotaxy. ‘a’ series with 8 + 8 setae; as and a 3 as microsetae; am 6 and a 7 as macrosetae; a 1, a 2 and a 6 as fan shaped scales; a 5 as trichobothrium with 8 surrounding fan shaped scales; ‘m’ series with 6 + 6 setae; m 2 as trichobothrium with 4 surrounding fan shaped scales; m 5 as trichobothrium with 3 surrounding fan shaped scales; m 4 and m 3 ea as fan shaped scales; m 7 as microseta; m 3 as macroseta; ‘p’ series with 6 + 6 setae; p 3 and p 5 as microsetae; pm 6, p 6, p 7 i and p 7 as macrosetae; em, emp and c 3 as fan shaped scales; se and el? as setulae; d 2 setula present, near p 5 ( Fig. 16View FIGURE 16 A).

Dorsal Abd. IV chaetotaxy. ‘A’ series with 7 + 7 setae; A 2 a and A 3 a absent; A 3 and A 6 as macrosetae; A 1, A 2, A 4, A 5 and Ae 7 as microsetae; ‘B’ series with 5 + 5 setae; B 1 absent; B 2 as microseta; B 3, B 4, B 5 and B 6 as macrosetae; Be 2 and Be 3 absent; ‘C’ series with 5 + 5 setae; C 4 absent; C 1 as macroseta; C 1 p, C 2, C 3 and C 4 a as microsetae; ‘T’ series with 7 + 7 setae; T 7 as macroseta; T 1, T 3, T 5 and T 6 as microsetae; T 2 and T 4 as trichobothria with 4 and 3 (respectively) fan shaped scales above each of them; ps present as setula next to T 7; ‘D’ series with 5 + 5 setae; D 2 a absent; D 1 as fan shaped scale; D 1 p, D 2, D 3 and D 3 p as microsetae; D 3 as trichobothria without fan shaped scales associated; ‘E’ series with 8 + 8 setae; E 2 a, E 2, E 3 and E 4 p as macrosetae; E 1, E 2 p, E 4 and E 4 p 2 as microsetae; Ee 7 and Ee 10 absent; ‘F’ series with 6 + 6 macrosetae (F 1, F 1 p, F 2, F 2 p, F 3, F 3 p); ‘Fe’ series with 5 + 5 macrosetae (Fe 2, Fe 3, Fe 4, Fe 5, Fe 6); Fe 2 p absent; three super-numerary microsetae below F 3 p ( Fig. 16View FIGURE 16 B).

Distribution of dorsal macrosetae of whole body as in Figure 16View FIGURE 16 C.

Remarks. S. glabra  presents some polymorphic setae on head (S 2, Pa 4 and an extra macroseta above the ocular trichobothria) not represented in the original description. All these setae can be macro or microsetae in different specimens. The cephalic seta Pm 1 and the mesothoracic seta p 4 originally described as macroseta, were observed as microsetae in part of the specimens. The representation of Fig. 16View FIGURE 16 C corrects Pp 3 and Pp 4 on dorsal head, presented originally as macrosetae but only observed as microsetae among different analyzed specimens.

Seira glabra  is similar in its dorsal chaetotaxy to other neotropical species of Seira  with 0+0 and 1 + 1 macrosetae in Abd. I. Within these taxa, the most related neotropical species to S. glabra  is possibly S. praiana Bellini, Fernandes & Zeppelini, 2010  and they both share a very similar macrochaetotaxy in: dorsal head (with exception of Pa 2 which is a macroseta in S. praiana  and a microseta in S. glabra  ); reduction of macrosetae in Th III (3 + 3 in S. praiana  and 2 + 2 in S. glabra  , while most species presents at least 7 + 7); absence of macrosetae in Abd. I; and proximal regions of Abd. II, III and IV, which present a very similar distribution and number of dorsal macrosetae. At the same time, the compared species are different in: Th III, where p 2 e is a macroseta only in S. praiana  ; external region of Abd. III, where a 7, p 7 and p 7 i are developed into macrosetae only in S. glabra  ; and external region of Abd. IV, where E 1 and E 2 p are macrosetae only in S. praiana  .

MNRJ

Museu Nacional/Universidade Federal de Rio de Janeiro