Seira paraibensis Bellini & Zeppelini, 2009

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: 221-225

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

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Seira paraibensis Bellini & Zeppelini, 2009
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Seira paraibensis Bellini & Zeppelini, 2009  detailed dorsal chaetotaxy

Figs 11–13View FIGURE 11View FIGURE 12View FIGURE 13

Analyzed material. Paratype, one female, Brazil, Paraíba, Areia 11–12.xi. 2008. Bellini, B.C. and Zeppelini, D. col. Material deposited at Collembola  Collection of DBEZ / UFRN. Other material: five females and three males, Brazil, Paraíba, Areia 24–27.xi. 2011. Bellini, B.C. col. Material deposited at Collembola  Collection of DBEZ / UFRN.

Dorsal head chaetotaxy. ‘An’ series with 9 + 9 macrosetae; one super-numerary microseta between An 3 a and 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; ‘M’ series with 5 + 5 setae; M 1, M 2 and M 4 as macrosetae; M 3 and M 4 i as microsetae; ‘S’ series with 7 + 7 macrosetae (S 1, S 2, S 3, S 4, S 5, S 5 i, S 6) plus the umpaired S0; Interocular series with 5 + 5 microsetae (p, q, r, s, t); ‘Ps’ series with 3 + 3 microsetae; Ps 4 absent (typical of Seira  , see Soto-Adames 2008); ‘Pa’ series with 6 + 6 setae; Pa 1, Pa 2, Pa 3 and Pa 4 as microsetae, Pa 5 as macroseta, Pa 6 as post ocular trichobothrium; ‘Pm’ series with 2 + 2 microseta (Pm 1 and Pm 3), Pm 2 absent (typical of Seira  , see Soto-Adames 2008); ‘Pp’ series with 5 + 5 microsetae (Pp 1, Pp 2, Pp 3, Pp 4, Pp 5); ( Fig. 11View FIGURE 11).

Dorsal Th. II chaetotaxy. ‘a’ series (without anterior setal collar) with 7 + 7 or 6 + 6 setae; a 2 p as microseta; a 5 i 2, a 5 i 2 p, a 5 ip, a 5 i, a 5, a 5 p as macrosetae, a 5 can be absent in some specimens; ‘m’ series with 13 + 13 setae; m 1 i 3, m 4 ip, m 5 and m 5 p as microsetae; m 1 i 2, m 1 i, m 2 i, m 2 i 2, m 1, m 2, m 4 p, m 4 i and m 4 as macrosetae; one super-numerary macroseta can be present or absent next to m 4 p; m 5 a absent; ‘p’ series with 17 + 17 setae; p 2 p absent; p 1 i 2 p, p 1 i 2, p 1, p 1 ip, p 1 p, p 2 a, p 2, p 2 e, p 2 ep, p 3 p and p 3 as macrosetae; p 1 i, p 2 ea, p 4, p 5, p 6 and p 6 e as microsetae ( Fig. 12View FIGURE 12 A).

Dorsal Th. III chaetotaxy. ‘a’ series with 8 + 8 setae; a 1 a, a 3, a 4, a 5 and a 7 as microsetae; a 1, a 2 and a 6 as macrosetae; ‘m’ series with 6 + 6 or 5 + 5 setae; m 6 p absent; m 6 as macroseta; m 1 i, m 1, m 4, m 5 and m 7 as microsetae, m 1 can be absent in some specimens; ‘p’ series with 10 + 10 or 9 + 9 setae; p 2 ea, p 4, p 5 and p 6 as microsetae; p 1 i, p 1, p 2, p 2 a, p 3 and p 2 e as macrosetae; p 1 i may be absent in some specimens; setula present near m 7 ( Fig. 12View FIGURE 12 B).

Dorsal Abd. I chaetotaxy. ‘a’ series with 5 + 5 microsetae (a 1, a 2, a 3, a 5 and a 6); a 1 a, a 1 e and a 4 absent; setula present near a 6; ‘m’ series with 6 + 6 setae; m 4, m 5 and m 6 as microsetae; m 2, m 3 and m 4 i as macrosetae; ‘p’ series with 2 + 2 microsetae (p 5 and p 6) ( Fig. 12View FIGURE 12 C).

Dorsal Abd. II chaetotaxy. ‘a’ series with 7 + 7 setae; a 2 p as fan shaped scale; a 3, as, a 6 and a 7 as microsetae; a 2 as macrosetae; a 5 as trichobothrium with 5 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 5 surrounding fan shaped scales; ‘p’ series with 3 + 3 setae; p 5 and p 7 as microsetae; p 6 as mesoseta; el and se present as setulae ( Fig. 12View FIGURE 12 D).

Dorsal Abd. III chaetotaxy. ‘a’ series with 8 + 8 setae; as and a 3 as microsetae; am 6 as macroseta; a 7 as mesoseta; a 1, a 2 and a 6 as fan shaped scales; a 5 as trichobothrium with 6 surrounding fan shaped scales; ‘m’ series with 6 + 6 setae; m 2 as trichobothrium with 5 surrounding fan shaped scales; m 5 as trichobothrium with 5 surrounding fan shaped; 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 as fan shaped scale; p 5 and p 7 as microsetae; p 7 i as mesoseta; pm 6 and p 6 as macrosetae; em, emp and c 3 as fan shaped scales; se as setula; d 2 setula present, near p 5 ( Fig. 13View FIGURE 13 A).

Dorsal Abd. IV chaetotaxy. ‘A’ series with 8 + 8 setae; A 2 a absent; A 1, A 2 and Ae 7 as microsetae; A 3 a, A 3, A 4, A 5 and A 6 as macrosetae; in some specimens A 6 can be a microseta; ‘B’ series with 6 + 6 setae; B 1, B 2 and B 4 as macrosetae; B 3, B 5 and B 6 as macrosetae; one super-numerary macroseta between B 4 and B 5; one supernumerary microseta next to B 6; Be 3 as macroseta and Be 2 absent; ‘C’ series with 5 + 5 setae; C 1 p absent; C 1 and C 4 as macrosetae; C 2, C 3 and C 4 a as microsetae; ‘T’ series with 7 + 7 setae; T 1 and T 7 as macrosetae; T 3, T 5 and T 6 as microsetae; T 2 and T 4 as trichobothria with 6 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 1 as fan shaped scale; D 2 a, D 2 and D 3 p as microsetae; D 3 as trichobothria without fan shaped scales associated; ‘E’ series with 6 + 6 setae; E 3 and E 2 a absent; E 2, E 2 p, E 4 and E 4 p as macrosetae; E 1 and E 4 p 2 as microsetae; Ee 7 and Ee 10 absent; ‘F’ series with 4 + 4 macrosetae; F 2 p and F 3 p absent; ‘Fe’ series with 4 + 4 macrosetae; Fe 2 and Fe 2 p absent; Abd. IV with 5 + 5 posterior setae ( Fig. 13View FIGURE 13 B).

Distribution of dorsal macrosetae of whole body as in Figure 13View FIGURE 13 C.

Remarks. The analysis of detailed dorsal chaetotaxy of S. paraibensis  revealed some macrosetae not presented in the original description, like a 6 and m 6 on Th. III and B 6, C 4, T 7, F 4 p and Fe 6 on Abd. IV ( Bellini & Zeppelini 2009 a). In the representation of Fig. 13View FIGURE 13 C were also added a 5 group on Th. II, omitted from the original description since it is near from the anterior setal collar and can be confused with it. Finally, Fig. 13View FIGURE 13 C does not present the external macrosetae of Th. II since these setae commonly are not presented or named in Seira  or even in Entomobryidae  descriptions (see Soto-Adames 2008).

In the original description, S. paraibensis  was compared to S. pseudoannulata Bellini & Zeppelini, 2008  ( Bellini & Zeppelini 2008 b). After presenting the complete chaetotaxy of the species it is also clear S. paraibensis  resembles in its dorsal chaetotaxy other two recent described species: S. primaria Godeiro & Bellini, 2014  and S. tinguira Cipola & Bellini, 2014 ( Cipola et al., 2014)  . Along with some similarities on part of Th. II, Th. III, Abd. II and Abd. III dorsal setae, the three species share the presence of three homologous macrosetae on Abd. I (M 2, M 3 and M 4 i). In the other hand, S. paraibensis  is different from the other two species specially in head and Abd. IV chaetotaxy: it only presents 1 + 1 macroseta (Pa 5) in the posterior cephalic region, while the other two species have several; in the sutural ‘S’ row: S. primaria  has 6 + 6 macrosetae (S 1, S 2, S 3, S 4, S 5 and S 6) plus the unpaired S0; S. paraibensis  has 7 + 7 macrosetae (S 1, S 2, S 3, S 4, S 5, S 5 i and S 6), plus the unpaired S0; and S. tinguira  has 6 + 6 setae (S 1, S 3, S 5 and S 6 as macrosetae and S 2 and S 4 as microsetae) and S0 is absent; on Abd. II S. tinguira  presents a 2 as macrosetae; in Abd. IV, ‘F’ and ‘Fe’ series are clearly distinct in the three species and S. paraibensis  is the only species who lacks F 2 p and F 3 p.