Seira coroatensis, Godeiro, Nerivânia N. & Bellini, Bruno C., 2015

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 : 209-215

publication ID	https://doi.org/ 10.11646/zootaxa.3972.2.4
publication LSID	lsid:zoobank.org:pub:E90A2B73-D681-4104-9FB9-279979295BE3
DOI	https://doi.org/10.5281/zenodo.6120343
persistent identifier	https://treatment.plazi.org/id/03C287A9-FFEB-FFA6-D5C0-FDCB5627FD82
treatment provided by	Plazi
scientific name	Seira coroatensis
status	sp. nov.

Treatment

Seira coroatensis sp. nov.

Figs 1–5 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5

Type material. Holotype female, Brazil, Rio Grande do Norte, Almino Afonso, Sítio Coroatá, 29.iv.2013. Godeiro, N.N. col. Paratypes 3 males and 5 females, same data as Holotype. Type material deposited at Collembola Collection of DBEZ / UFRN.

Description. Total body length of Holotype 2,02 mm. Habitus entomobryid ( Figs 1 View FIGURE 1 , 2 View FIGURE 2 A). Color of fixed specimens (in 100% ethanol) pale yellow with dark pigment covering eye patches, lateral edges of mesothorax and latero-posterior regions of third, fourth and fifth abdominal segments; antennae and distal legs slightly darker than body ( Fig. 1 View FIGURE 1 ). Colour of mounted specimens pale yellow. Yellowish rounded scales covering body and head, legs, Ant. I–III, manubrium and dentes (ventrally). Ventral tube with scales. Ant. IV weakly annulated, with a single apical bulb and bearing at least three types of setae: smooth, feathered and small blunt setae ( Fig. 2 View FIGURE 2 B). Ant. III sense organ as in Fig. 2 View FIGURE 2 C, with two rods and three guard sensillae. Eye patches oval with 8+8 lenses, the largest ‘B’ and smallest ‘G’ ( Fig. 3 View FIGURE 3 ). Five interocular feathered setae, p as macroseta, q, r, s and t as mesosetae ( Fig. 3 View FIGURE 3 ). Pre– labral setae multiciliated; labral setae smooth. Maxillary palp with apical and basal setae smooth, subequal in size; sublobal plate with 2 smooth appendages ( Fig. 2 View FIGURE 2 E). Labial papilla as in figure 2E; lateral appendage acuminate, seta-like and four smooth setae ( Fig. 2 View FIGURE 2 F). Five smooth proximal setae of labial palp; labial triangle formula: M1M2rEL1L2 / A1-5; r smooth and reduced ( Fig. 2 View FIGURE 2 D). All post labial setae ciliate. Mesothoracic hood not developed. Metatrochanteral organ with approximately 30 short spines ( Fig. 2 View FIGURE 2 G). All ungues with four teeth, two subequal basal paired teeth and two apical unpaired ( Figs 2 View FIGURE 2 H–2J). Unguiculi lanceolate with outer margin slightly serrate ( Figs 2 View FIGURE 2 H–2J). Tenent hair capitate with weakly serrated edges. Metatibia with one small smooth distal posterior seta ( Fig. 2 View FIGURE 2 J). Ventral manubrium with 7+7 subapical setae, spines typically absent in furcula. Mucro typically falcate ( Fig. 2 View FIGURE 2 K).

Dorsal head chaetotaxy. Antennal series (An) with 9+9 macrosetae and 1+1 microseta; one super-numerary macroseta next to An2; anterior series (A) with A4 present; A0, A2 and A3 as macrosetae; A1, A4 and A5 as microsetae; medio-ocellar series (M) with 5+5 setae; one super-numerary microseta next to M4; M1, M2 and M4 as macrosetae; M3 and M 4i as microsetae; sutural series (S) with 5+5 macrosetae (S1, S2, S3, S5, S6) and 1+1 microseta (S4) plus unpaired S0; interocular series with 5+5 setae; p as macroseta; q, r, s and t as mesosetae; postsutural series (Ps) with 3+3 setae; Ps2 (presenting an untypical position) and Ps3 as microseta, Ps5 as macroseta; Ps4 absent (typical of Seira , see Soto-Adames 2008); postoccipital anterior series (Pa) with 5+5 setae; Pa1, Pa2, Pa3 and Pa5 as macrosetae, Pa6 as post ocular trichobothrium, Pa4 absent; postoccipital medium series (Pm) with 2+2 macrosetae (Pm1 and Pm3), Pm2 absent (typical of Seira , see Soto-Adames 2008); postoccipital posterior series (Pp) with 5+5 setae; Pp1, Pp2, Pp3 and Pp5 as macrosetae; Pp4 as microseta ( Fig. 3 View FIGURE 3 ).

Dorsal Th. II chaetotaxy. Anterior (a) series (without anterior setal collar) with 7+7 setae; a2p as microseta; a 5i 2, a 5i 2p, a5ip, a 5i, a5, a5p as macrosetae; medial (m) series with 12+12 setae; m 1i 3, m 1i 4?, m4ip and m5 as microsetae; m 1i 2 and m 4i as macrosetae or microsetae; m 1i, m 2i, m1, m2, m4p and m4 as macrosetae; m5a and m5p absent; posterior (p) series with 17+17 setae; p 1i 2p absent; p 1i 2, p 1i, p1, p1ip, p1p, p2a, p2, p2p, p2e, p2ep, p3p, p2ea, p3 and p5 as macrosetae; p4 and p6 as microsetae; p6e present as microseta; three external macrosetae near p6 (common in Seira , see Soto-Adames 2008) ( Fig. 4 View FIGURE 4 A).

Dorsal Th. III chaetotaxy. ‘a’ series with 6+6 setae; a1a and a3 absent (atypical); a6 and a7 as microsetae; a1, a2, a4 and a5 as macrosetae; ‘m’ series with 6+6 setae; m6p absent; m 1i, m4 and m6 as macrosetae; m1, m5 and m7 as microsetae; ‘p’ series with 9+9 or 8+8 setae; p 1i absent; p2ea, p3, p5 and p6 as microsetae; p2ea absent or present; p1, p2, p2a, p2e and p4 as macrosetae; setula present near m7 ( Fig. 4 View FIGURE 4 B).

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

Dorsal Abd. II chaetotaxy. ‘a’ series with 6+6 setae; a3 absent; a2p as fan shaped scale; as, a6 and a7 as microsetae; a2 as macroseta; a5 as trichobothrium with 5 surrounding fan shaped scales; ‘m’ series with 9+9 setae; m 3ei, m3ea, m6 and m7 as microsetae; m3, m3ep, m3e and m5 as macrosetae; m2 as trichobothrium with 4–5 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. 4 View FIGURE 4 D)

Dorsal Abd. III chaetotaxy. ‘a’ series with 8+8 setae; as, a3 and a7 as microsetae; am6 as macroseta; 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 3 surrounding fan shaped scales; m4 and m3ea as fan shaped scales; m7 as microseta; m3 as macroseta; ‘p’ series with 6+6 setae; p3, p5 and p7 as microsetae; p 7i as mesoseta; pm6 and p6 as macrosetae; em and emp as fan shaped scales; c3 as microsetae; se and el as setulae; d2 setula present, near p5 ( Fig. 5 View FIGURE 5 A).

Dorsal Abd. IV chaetotaxy. ‘A’ series with 7+7 setae; A1, A2, A6, Ae7 and one super-numerary seta between A4 and A5 as microsetae; A3, A4 and A5 as macrosetae; A2a and A3a absent; ‘B’ series with 7+7 setae; B2, B4a and Be3 as microsetae; B3, B4, B5 and B6 as macrosetae; B1 and Be2 absent; ‘C’ series with 6+6 setae; C1 and C4 as macrosetae; C1p as fan shaped scale; C2, C3 and C4a as microsetae; ‘T’ series with 7+7 setae; T1, T3, T5 and T6 as microsetae; T7 as mesosetae; T2 and T4 as trichobothria with 6 and 3 surrounding fan shaped scales (respectively); ps present as setula next to T7; ‘D’ series with 5+5 setae; D1 as fan shaped scale; D2a and D3p as microsetae; D2 as macroseta; D3 as trichobothria without fan shaped scales associated; ‘E’ series with 7+7 setae; E3 absent; E2a, E2, E2p, E4 and E4p as macrosetae; E1 and E4p2 as microsetae; Ee7 and Ee10 absent; ‘F’ series with 5+5 macrosetae, F3p absent; ‘Fe’ series with 6+6 macrosetae (Fe2, Fe2p, Fe3, Fe4, Fe5 and Fe6); external microsetae after ‘Fe’ series not seen; Abd. IV with 8+8 posterior setae ( Fig. 5 View FIGURE 5 B).

Distribution of dorsal macrosetae of whole body as in Figure 5 View FIGURE 5 C.

Etymology. The new species was named after its type locality, Coroata Farm.

Remarks. S. coroatensis sp. nov. presents many chaetotaxic similarities with other described species of northeastern Brazil, particularly those with 5+5 macrosetae on Abd. I. The overall chaetotaxy of the new species is more similar to S. ritae Bellini & Zeppelini, 2011 ( Bellini & Zeppelini 2011a) and S. mendoncae Bellini & Zeppelini, 2008 (lapsus calami: originally described as S. mendoncea ) ( Bellini & Zeppelini 2008a), and the three species also share similarities on distribution of dorsal macrosetae over part of head, Abd. II, III and internal region of Abd. IV. In the other hand, the new species is different from the other two taxa in: the presence of an extra macroseta below cephalic row ‘An’, unlike the other two species; on cephalic row ‘M’, S. coroatensis sp. nov. presents M1, M2 and M4 as macrosetae whereas S. ritae presents M1, M2, M3 and M4 as macrosetae, and S. mendoncae only M1 and M4; on Th. II, the new species presents 4+4 or 5+5 macrosetae on m1–2 complex, while S. ritae presents 6+6 and S. mendoncae 4+4; on Th. III, m6 is a macroseta only in S. coroatensis sp. nov.; on external region of Adb. IV, Fe2p macroseta is only present in the new described species; and finally, the metatrochanteral organ in S. coroatensis sp. nov. is more complex, bearing approximately 30 spines while in the other two species this number is never higher than 25, particularly in S. ritae , which presents approximately 17 spines.

S. coroatensis sp. nov. was collected in the Caatinga biome, a semi-arid ecosystem exclusively seen in Brazil; Good’s biogeographic zone 27 ( Good 1974). The specimens were collected during the beginning of the rainy season. The climate of the area is “Aw” following Koeppen’s system, with a very clear and long dry season ( Kottek et al. 2006).