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

Seira paraibensis Bellini & Zeppelini, 2009 detailed dorsal chaetotaxy

Figs 11–13

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 An3a and An3; ‘A’ series with A4 present; A0, A2, A3 and A5 as macrosetae; A1 and A4 as microsetae; ‘M’ series with 5+5 setae; M1, M2 and M4 as macrosetae; M3 and M 4i as microsetae; ‘S’ series with 7+7 macrosetae (S1, S2, S3, S4, S5, S 5i, S6) plus the umpaired S0; Interocular series with 5+5 microsetae (p, q, r, s, t); ‘Ps’ series with 3+3 microsetae; Ps4 absent (typical of Seira , see Soto-Adames 2008); ‘Pa’ series with 6+6 setae; Pa1, Pa2, Pa3 and Pa4 as microsetae, Pa5 as macroseta, Pa6 as post ocular trichobothrium; ‘Pm’ series with 2+2 microseta (Pm1 and Pm3), Pm2 absent (typical of Seira , see Soto-Adames 2008); ‘Pp’ series with 5+5 microsetae (Pp1, Pp2, Pp3, Pp4, Pp5); ( Fig. 11 ).

Dorsal Th. II chaetotaxy. ‘a’ series (without anterior setal collar) with 7+7 or 6+6 setae; a2p as microseta; a 5i 2, a 5i 2p, a5ip, a 5i, a5, a5p as macrosetae, a5 can be absent in some specimens; ‘m’ series with 13+13 setae; m 1i 3, m4ip, m5 and m5p as microsetae; m 1i 2, m 1i, m 2i, m 2i 2, m1, m2, m4p, m 4i and m4 as macrosetae; one super-numerary macroseta can be present or absent next to m4p; m5a absent; ‘p’ series with 17+17 setae; p2p absent; p 1i 2p, p 1i 2, p1, p1ip, p1p, p2a, p2, p2e, p2ep, p3p and p3 as macrosetae; p 1i, p2ea, p4, p5, p6 and p6e as microsetae ( Fig. 12 A).

Dorsal Th. III chaetotaxy. ‘a’ series with 8+8 setae; a1a, a3, a4, a5 and a7 as microsetae; a1, a2 and a6 as macrosetae; ‘m’ series with 6+6 or 5+5 setae; m6p absent; m6 as macroseta; m 1i, m1, m4, m5 and m7 as microsetae, m1 can be absent in some specimens; ‘p’ series with 10+10 or 9+9 setae; p2ea, p4, p5 and p6 as microsetae; p 1i, p1, p2, p2a, p3 and p2e as macrosetae; p 1i may be absent in some specimens; setula present near m7 ( Fig. 12 B).

Dorsal Abd. I chaetotaxy. ‘a’ series with 5+5 microsetae (a1, a2, a3, a5 and a6); a1a, a1e and a4 absent; setula present near a6; ‘m’ series with 6+6 setae; m4, m5 and m6 as microsetae; m2, m3 and m 4i as macrosetae; ‘p’ series with 2+2 microsetae (p5 and p6) ( Fig. 12 C).

Dorsal Abd. II chaetotaxy. ‘a’ series with 7+7 setae; a2p as fan shaped scale; a3, as, a6 and a7 as microsetae; a2 as macrosetae; a5 as trichobothrium with 5 surrounding fan shaped scales; ‘m’ series with 8+8 setae; m3ep absent; m 3ei, m3ea, m6 and m7 as microsetae; m3, m3e and m5 as macrosetae; m2 as trichobothrium with 5 surrounding fan shaped scales; ‘p’ series with 3+3 setae; p5 and p7 as microsetae; p6 as mesoseta; el and se present as setulae ( Fig. 12 D).

Dorsal Abd. III chaetotaxy. ‘a’ series with 8+8 setae; as and a3 as microsetae; am6 as macroseta; a7 as mesoseta; a1, a2 and a6 as fan shaped scales; a5 as trichobothrium with 6 surrounding fan shaped scales; ‘m’ series with 6+6 setae; m2 as trichobothrium with 5 surrounding fan shaped scales; m5 as trichobothrium with 5 surrounding fan shaped; m4 and m3ea as fan shaped scales; m7 as microseta; m3 as macroseta; ‘p’ series with 6+6 setae; p3 as fan shaped scale; p5 and p7 as microsetae; p 7i as mesoseta; pm6 and p6 as macrosetae; em, emp and c3 as fan shaped scales; se as setula; d2 setula present, near p5 ( Fig. 13 A).

Dorsal Abd. IV chaetotaxy. ‘A’ series with 8+8 setae; A2a absent; A1, A2 and Ae7 as microsetae; A3a, A3, A4, A5 and A6 as macrosetae; in some specimens A6 can be a microseta; ‘B’ series with 6+6 setae; B1, B2 and B4 as macrosetae; B3, B5 and B6 as macrosetae; one super-numerary macroseta between B4 and B5; one supernumerary microseta next to B6; Be3 as macroseta and Be2 absent; ‘C’ series with 5+5 setae; C1p absent; C1 and C4 as macrosetae; C2, C3 and C4a as microsetae; ‘T’ series with 7+7 setae; T1 and T7 as macrosetae; T3, T5 and T6 as microsetae; T2 and T4 as trichobothria with 6 and 3 (respectively) fan shaped scales above each of them; ps present as setula next to T7; ‘D’ series with 5+5 setae; D1 as fan shaped scale; D2a, D2 and D3p as microsetae; D3 as trichobothria without fan shaped scales associated; ‘E’ series with 6+6 setae; E3 and E2a absent; E2, E2p, E4 and E4p as macrosetae; E1 and E4p2 as microsetae; Ee7 and Ee10 absent; ‘F’ series with 4+4 macrosetae; F2p and F3p absent; ‘Fe’ series with 4+4 macrosetae; Fe2 and Fe2p absent; Abd. IV with 5+5 posterior setae ( Fig. 13 B).

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

Remarks. The analysis of detailed dorsal chaetotaxy of S. paraibensis revealed some macrosetae not presented in the original description, like a6 and m6 on Th. III and B6, C4, T7, F4p and Fe6 on Abd. IV ( Bellini & Zeppelini 2009a). In the representation of Fig. 13 C were also added a5 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. 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 2008b). 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 (M2, M3 and M 4i). 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 (Pa5) in the posterior cephalic region, while the other two species have several; in the sutural ‘S’ row: S. primaria has 6+6 macrosetae (S1, S2, S3, S4, S5 and S6) plus the unpaired S0; S. paraibensis has 7+7 macrosetae (S1, S2, S3, S4, S5, S 5i and S6), plus the unpaired S0; and S. tinguira has 6+6 setae (S1, S3, S5 and S6 as macrosetae and S2 and S4 as microsetae) and S0 is absent; on Abd. II S. tinguira presents a2 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 F2p and F 3p.

Figures

FIGURE 11. Detailed dorsal head chaetotaxy of Seira paraibensis.

FIGURE 12. Detailed dorsal chaetotaxy of Seira paraibensis (left side): A, Th. II; B, Th. III; C, Abd. I; D, Abd. II.

FIGURE 13. Detailed dorsal chaetotaxy of Seira paraibensis: A, Abd. III (left side); B, Abd. IV (left side); C, Distribution of dorsal macrosetae (right side).