Abstract
Seira caerucinerea sp. nov. , a new species of springtail from the Cerrado domain, state of Tocantins, Brazil, is described and illustrated. The new species is mainly characterized by bluish-gray coloration and dorsal chaetotaxy presenting macrochaeta S7 on head, three macrochaetae (a6, m6 and p6) on margin of metathorax and 4+4 macrochaetae (a1, m2, m3 and m4i) on abdomen I. Characteristics of maxillary and labial papillae, chaetotaxy of subcoxae, collophore, ventral region of head, ventral and lateral region of abdomen IV and V, which are usually omitted in species descriptions within the genus, are also provided. This is the first species of Seira described from the Cerrado domain, as well as the first record of the genus from the state of Tocantins.
Highlights
Seira Lubbock, 1870 includes epiedaphic springtails found mostly in litter, from low vegetation to canopy and over uncovered top soils, primarily in tropical landscapes (CHRISTIANSEN & BELLINGER 2000)
We present a new species of Neotropical Seira from the Cerrado Phytogeographic Domain, state of Tocantins, Northern Region of Brazil
The specimens were collected from leaf litter, preserved in 80% ethanol, clarified with potassium dichromate (K2Cr2O7) and hydrochloric acid (HCl), and mounted on glass slides with Hoyer medium following the procedures described by ARLÉ & MENDONÇA (1982) and CHRISTIANSEN & BELLINGER (1998)
Summary
The specimens were collected from leaf litter, preserved in 80% ethanol, clarified with potassium dichromate (K2Cr2O7) and hydrochloric acid (HCl), and mounted on glass slides with Hoyer medium following the procedures described by ARLÉ & MENDONÇA (1982) and CHRISTIANSEN & BELLINGER (1998). Nov.: (2) apical bulb of the fourth antennal segment; (3) eye patch (right); (4) prelabral and labral chaetotaxy; (5) labial region (left); (6) labial palp; (7) maxillary palp; (8) mandible; (9) maxilla (right); (10) head ventral chaetotaxy; (11) subcoxa I; (12) subcoxa II; (13) subcoxa III; (14) trochanteral organ; (15) foot I complex; (16) foot III complex; (17) metaunguiculus (posterior view); (18) collophore chaetotaxy; (19) manubrium chaetotaxy (ventral view); (20) distal dens and mucro; (21) general distribution of dorsal macrochaetae on head and trunk. The new species differs from the others by its dorsal head chaetotaxy, which presents seta S4 as macro or microchaeta, and by the presence of interocular (p) macrochaeta (absent in S. insalahi and S. paraibensis) (Figs 21, 23). Is the only one that presents a smooth seta in metaungues (Figs 1517) Both species present very distinct color patterns
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