Two new species of Seira Lubbock (Collembola, Entomobryidae, Seirini) from South Brazil

Abstract

Two new species of Seira, Seira tinguira sp. nov. and Seira paulae sp. nov. from Atlantic Rainforest Phytogeographic Domain in Paraná State, southern Brazil, are described and illustrated, with dorsal chaetotaxy labeled in detail. The general morphology of S. tinguira sp. nov. resembles S. frater (Bonet) and S. oceanica Yosii, however differs by chaeta Pa4 present in head, three extra macrochaetae (m1i2, p1i2 and one extranumerary) in mesothorax; four (a3, p2e, p2ea and a4) in metathorax; one (m3ep) in the second abdominal segment , among other morphological features. Seira paulae sp. nov. is similar to S. atrolutea (Arlé) in body colour, however dorsal chaetoxy resembles S. mendoncea Bellini & Zeppelini and S. ritae Bellini & Zeppelini. On the other hand, the new species clearly differs from other similar taxa by the presence of cephalic macrochaeta M2; three macrochaetae (M2, M1 and M2i) in mesothorax and p2p as microchaeta; one extra macrochaeta (p1i) in metathorax and two (a1 and p2ea) as macro or microchaetae; macrochaeta m3ep missing in the second abdominal segment; macrochaeta am6 present in the third abdominal segment among other features. Seira tinguira sp. nov. was found in different habitats of Paraná State while S. paulae sp. nov. was recorded only in its type locality. A distribution map is provided for both species. With the presented description there are now four recorded species of Seira from south Brazil.

Cryptic subterranean diversity in Collembola indicates that Hot Spot in ferruginous rock may have serious implications in Brazilian conservation policy.

“…Homology. The terminology used in the diagnoses for the hypotheses of homology followed: labial chaetotaxy after Gisin [29] with additions of Zhang & Pan [30]; Fjellberg [31] for labial palp papillae and maxillary palp; postlabial chaetotaxy after Chen & Christiansen [32], with adaptations of Cipola et al [33] for J series; clypeal chaetotaxy after Yoshii & Suhardjono [34]; labral chaetotaxy after Cipola et al [35]; unguiculus lamellae after Hüther [36]; Anterior dens chaetotaxy after Oliveira et al [37]; Mari-Mutt [38] for dorsal head chaetotaxy, with additions of Soto-Adames [39]; Szeptycki [40] and Zhang & Deharveng [41] for S-chaetotaxy; and Szeptycki [42] for dorsal chaetotaxy, with additions and modifications provided by Soto-Adames [39] and Zhang et al [43]. Symbols used to depict the chaetotaxy are presented in Fig.…”

Resolving the species status of overlooked West‐Palaearctic bumblebees

“…These disagreements are exemplified by the numerous species delimitation approaches using alternative diagnostic criteria (De Queiroz, 2007). While traditional taxonomy is mainly based on discrete morphological traits (Cipola et al., 2014; Ji & Du, 2014; Rampini et al., 2012), such traits can fail to detect species in taxon groups with low or no morphological differentiation (i.e., cryptic species) or in groups exhibiting large morphological variability at the intraspecific level (e.g., in some bumblebee species complexes: Carolan et al., 2012; Ghisbain, Lozier, et al., 2020; Williams et al., 2012, 2020). Subsequently, many attempts have been made to improve species delimitation by using alternative features such as shapes (Aytekin et al., 2007; Gérard et al., 2020), genetic markers (White et al., 2014), or semio‐chemical markers (Martin et al., 2008).…”