A new species of Seira ( Collembola : Entomobryidae ) from the state of Paraíba , Brazil

A new species of Seira Lubbock, 1869 is described and illustrated. Seiraglabra sp. nov. is the second species described from the municipality of Areia (Caatinga biome) and the seventh from the state of Paraiba, Brazil. Compared with other species of the genus, Seira glabra sp. nov. has some remarkable reductions on dorsal chaetotaxy, specially on the methatorax and first abdominal segment. The most similar species to S.glabra sp. nov. is Seira praiana. Both lack macrochaetae on the first abdominal segment.

Seira Lubbock, 1869 (Entomobryinae: Seirini) comprises approximately 200 described species distributed worldwide, 23 of which have been recorded from Brazil.The Brazilian fauna of this genus is certainly poorly known, considering the large number of morphotypes yet to be described (ABRANTES et al. 2010, 2012, BELLINI et al. 2010, BELLINI & ZEPPELINI 2011, BELLINGER et al. 1996-2013).The fauna of northeastern Brazil, most particularly in the state of Paraíba is very rich in species of Seira, but only less than 10% of the state's territory has been sampled (BELLINI & ZEPPELINI 2009).The municipality of Areia in the state of Paraíba, houses an important conservation unit inside the Caatinga phytogeographic domain, called "Mata do Pau-Ferro", where a "Brejo de altitude" can be found.Compared with other semi-arid areas inside Caatinga, "brejos" have privileged conditions, with higher total amounts of soil moisture and air humidity, cooler temperatures and a taller vegetation cover (LIMA 1966)."Mata do Pau-Ferro" is one of the largest remaining areas of "Brejo" in Paraíba, with 600 hectares and is located at altitudes ranging from 400 and 600 m a.s.l.(BARBOSA et al. 2004).
Herein we describe a new species of Seira from "Mata do Pau-Ferro".This species represents the seventh record of the genus from Paraíba.

MATERIAL AND METHODS
The specimens were collected in November 2011, during the dry season, using pitfall traps and entomological aspirators, directly from areas where the vegetation cover is tall and litter is present.The climate of Areia is 'As' according to Koeppen's system and the region belongs to Good's biogeo-graphic zone 27 (GOOD 1974, KOTTEK et al. 2006).The specimens were fixed in 70% ethanol.For mounting on glass slides, specimens were cleared using hydrochloric acid and potassium dichromate, following the procedures described by ARLÉ & MENDONÇA (1982), and Hoyer liquid was used as a semi-permanent medium.The chaetotaxy schemes follow the systems of CHRISTIANSEN & BELLINGER (2000), which was modified from JACQUEMART (1974), and SOTO-ADAMES (2008).

Figs 1-12
Description.Total body length of holotype 2.12 mm.Habitus typically entomobryid (Figs 1 and 2).Color of specimens in 70% ethanol pale yellow with light blue pigment covering antennae and distal femora; two dark blue spots on distal part of fourth and third abdominal segments; dark pigmentation on lateral portions of mesothorax and metathorax; dark blue pigment covering front of head and eye patches (Fig. 1).Color of mounted specimens pale yellow with dark blue pigment covering eye patches and distal femora (Fig. 2); rounded brownish scales covering Ant.(antennal segments) I and II entirely, basal halves of Ant.III and IV, head, thorax, abdomen, ventral tube, all leg segments, manubrium and dentes.Ant.IV not annulated, with single apical bulb and two types of setae: bigger multiciliated setae and smaller curved smooth setae (Fig. 3).Eye patches oval with 8+8 ocelli, the biggest being B and smallest E (Fig. 4).Five interocular multiciliated mesochaetae (Fig. 4).Pre-labral and labral setae smooth.Labial triangle M1-2 and E multiciliated, r A new species of Seira (Collembola: Entomobryidae) from the state of Paraíba, Brazil Nerivânia Nunes Godeiro  nov.can be readily distinguished from S. praiana by the cephalic region 1 with 11 macrochaetae, region 5 with two macrochaetae and region 6 with six macrochaetae, whereas in S. praiana these regions have eight, four and four macrochaetae, respectively.The new species has two macrochaetae on the region 2 of mesothorax, whereas S. praiana has only one.Two macrochaetae are observed on the metathorax, whereas S. praiana has three.Finally, six macrochaetae are found on the region B of the Abd.III, whereas S. praiana has three.

1,3 & Bruno Cavalcante Bellini 1,2
. A new species of Seira Lubbock, 1869 is described and illustrated.Seira glabra sp.nov. is the second species described from the municipality of Areia (Caatinga biome) and the seventh from the state of Paraíba, Brazil.Compared with other species of the genus, Seira glabra sp.nov.has some remarkable reductions on dorsal chaetotaxy, specially on the methatorax and first abdominal segment.The most similar species to S. glabra sp.nov. is Seira praiana.Both lack macrochaetae on the first abdominal segment. ABSTRACT