Seira praiana, Zeppelini, Douglas, 2010

Zeppelini, Douglas, 2010, Two new species of Seira (Collembola, Entomobryidae) from Brazilian coast, Zootaxa 2448, pp. 53-60 : 54-56

publication ID	https://doi.org/ 10.5281/zenodo.195131
DOI	https://doi.org/10.5281/zenodo.5695481
persistent identifier	https://treatment.plazi.org/id/03DE87AE-FD5F-FFFA-FF26-FF083281AD59
treatment provided by	Plazi
scientific name	Seira praiana
status	sp. nov.

Treatment

Seira praiana sp. nov.

Figs 1 View FIGURE 1. S –11, 23B, Tab. 1 View TABLE 1

Type material. Holotype male, Brazil, Rio de Janeiro, Mangaratiba, Restinga da Marambaia 3.i.2008. Abrantes & Fernandes coll. On slide N° 1855 CM/ MNRJ. Paratypes 6 females and 1 male, the same data as holotype.

Description. Holotype length: 1.35 mm. Habitus typically entomobryid ( Figs 1 View FIGURE 1. S , 2). Color of specimens in alcohol pale yellow with light blue pigment covering antennae and dark blue pigment covering front of head, eyepatches, lateral margins of thorax and abdominal segments ( Fig. 1 View FIGURE 1. S ). Color of mounted specimens pale white with light blue pigment covering antennae and legs, with dark blue pigment covering head, eyepatches, lateral borders of meso-, metathorax and all abdominal segments. Brownish, apically rounded scales covering antennae I and II, basal half of antennae III, head, thorax, abdomen and all segments of legs. Collophore without scales. Fourth antennal segment not annulated, with single apical bulb, without pin seta (Fig. 3).

medial; + = present; - = absent;? = not clearly observed. * Measurements made on holotypes.

FIGURES 2–11. Seira praiana sp. nov.: 2,habitus; 3, apical bulb of the 4th antennal segment; 4, right eyepatch; 5, labral papillae (dorsal view); 6, setae of the labial triangle; 7, trochanteral organ; 8, first foot complex; 9, second foot complex; 10, third foot complex; 11, distal dens and mucro.

Eyepatches oval, with largest ocellus A and smallest ocellus H, with four interocular ciliated setae and one interocular macrochaetae (Fig. 4). Labral papillae as in Fig. 5. Prelabral and labral setae ciliated. Labial triangle seta r reduced and M1, M2 and E ciliated (Fig. 6).

Trochanteral organ V-shaped with 22 spine-like setae (Fig. 7). Pro-, meso- and metaunguis with four inner teeth, one pair at the base and two unpaired teeth at the apex (Figs 8–10). Unguiculi acuminate, with posterior edge slightly serrated (Figs 8–10). Tenent hair smooth and capitate. Manubrium without spine-like setae, its anterior part with four subapical setae on transversal line. Mucro typically falcate (Fig. 11).

Dorsal macrochaetae pattern on head and body as in Fig. 23 View FIGURE 23 B. Other characters in Table 1 View TABLE 1 .

Remarks. S. praiana sp. nov. is unique among the other described Seira by the combination of the following characters: high number of macrochaetae on cephalic region 5, absence of macrochaetae on the first abdominal segment and only one macrochaeta on the region 2 of the mesothorax. However, the closest species to S. praiana sp. nov. are S. americana Jacquemart and S. nunezae Christiansen & Bellinger. The cephalic regions 4 and 5, the mesothoracic region 3 and the distal area of the abdominal segment IV share a similar number of macrochaetae in the three species. The reduced number of the macrochaetae on the metathorax (only three) is a character only described in these three species from Americas ( Christiansen & Bellinger 2000, Zeppelini & Bellini 2006, Bellini & Zeppelini 2008ab, 2009, Bellini et al. 2009). Also, the three species share four ventral manubrial subapical setae and acuminate unguiculi ( Table 1 View TABLE 1 ). The chaetotaxy of the abdominal segments II and III in S. praiana sp. nov. is almost the same of S. americana , while the disposition and number of macrochaetae on mesothorax and abdominal segment IV are more similar between the new species and S. nunezae . Other characters of the mentioned species are compared inTable 1.

Etymology. Praiana is the Portuguese word to “who is linked to the beach”.

Distribution. Good’s biogeographic zone 27: South Brazilian ( Good 1974).

Habitat. S. praiana sp. nov. was collected in the Restinga da Marambaia, in Mangaratiba municipality, about 110 km from Rio de Janeiro city, southestern Brazil. The specimens were found on sand dunes covered by herbaceous ridge palmoid communities of “Guriri”–– Allagoptera arenaria (Gomes) ( Menezes & Araújo 2005) , a few meters from the sea, during the dry season. The climate of the area is ‘Aw’ following Koeppen’s system ( Kottek et al. 2006).

Species	Lobes on antennal apical bulb	Annulation s on 4th antennal segment	Ratio antenna / cephalic diagonal	Unguiculus shape	Number of inner ungual teeth	Distinctly larger inner ungual tooth	Spine-like setae at base of dens	Number of ventral manubrial subapical setae
praiana	1	-	2.61*	AC	4	-	-	4
potiguara	1	-	2.96*	TR	4	M+, A-	-	4
nunezae	2	-	2.65–2.7	AC	4	-	-	4
brasiliana	1	-	2.1–2.5	AC	4	-	-	4
proannulata	3	+	2.3–3.0	AC	4	-	?	2
americana	2	-	2.25	AC	4	-	-	?
eidmanni	1	-	2.25–2.73	AC	4	-	-	2