Salina unisetosa, Oliveira¹ & Cipola² & Almeida¹, 2020

Oliveira, Fábio G. L., Cipola, Nikolas G. & Almeida, Eduardo A. B., 2020, Systematics and biogeography of Salina MacGillivray (Collembola: Entomobryoidea), with emphasis on the species groups in the New World, Insect Systematics & Evolution 51, pp. 81-138 : 124-125

Salina unisetosa sp.n. Oliveira & Cipola

Figures 9I , 10I , 11I , 12I , 13I , 14A and D , 15A , 16I , 18E , 19G

ZooBank: http://zoobank.org/ FE467C37-AE00-41B3-A19D-28FF722AEBEF

Diagnosis

Trunk depigmented and appendages yellowish; Ant I with 3 mac; cephalic groove with 2 serrated mic, without smooth chaetae; Th II–Abd I with 1, 1, 1 central mac, respectively; Abd III with 6 lateral mac (a7, am6, pm6, p6, p7i and one unnamed); Abd IV with 8 central mac (A3–5 absent) and 10 lateral mac; collophore with 8 anterior, 2 posterior and 15 lateral flap chaetae; trochanteral organ with 15 spine-like chaetae; manubrial plate with 3 chaetae.

Type material

Holotype ♂ on slide (COLLE 048/INPA): Brazil, Acre, Senador Guiomard municipality, farm “São Francisco”, road 317, km 14, 10°05’41”S, 67°38’17”W, Amazon Forest , 208 m, 13-27.vii.2014, Malaise-trap, DRR Fernandes & DF Nogueira coll. Paratypes on slides (COLLE 048A-F/INPA): 2 ♂, 4 ♀ and 27 specimens in alcohol, same data as holotype .

Description

Total length (head + trunk) of holotype 1.88 mm. Specimens pale white with light yellow pigment on Ant I–IV and distal half of femora to distal tibiotarsi. Eye patches black ( Figure 9I ).

Head. Ant I dorsally with 3 mac and 6 basal spiny smooth mic ( Figure 10I ). Posterior labial chaetotaxy; series ‘CG’ with 6 ciliate chaetae (CG1-3, CG5, CG7–7e) and 2 serrated mic (CG4, CG6); series ‘PLM’ with 3 ciliate chaetae (PLM1–3); series ‘PLE’ with 2 ciliate chaetae (PLE1–2); lateral side with about 15 ciliate chaetae ( Figure 11I ).

Dorsal chaetotaxy. Th II with 1 ‘m’ mac (m7), and 1 ‘p’ mac (p3). Th III with 1 ‘p’ mac (p3) ( Figure 12I ). Abd I with 1 ‘m’ mac (m4) ( Figure 13I ). Abd III with 1 ‘a’ mac (a7), 2 ‘m’ mac (am6, pm6), and 3 ‘p’ mac (p6, p 7i and one unnamed) (similar to S. brasiliana sp.n., Figure 14A ). Abd IV with 2 ‘A’ mac (A1, A6); 1 ‘Ae’ mac (Ae1); 3 ‘B’ mac (B3–5); 1 ‘Be’ mac (Be1); 1 ‘C’ mac (C1); 4 ‘E’ mac (E1-4); 4 ‘F’ mac (F1–F3p); 2 ‘Fe’ mac (Fe1–3); posterior side with 3 sens type IV (ps and two unnamed) (similar to S. brasiliana sp.n., Figure 14D ). Abd V with 2 ‘a’ mac (a3, a5); 3 ‘m’ mac (m2–3, m5); and 5 ‘p’ mac (p0-4) (similar to S. brasiliana sp.n., Figure 15A ).

Appendages. Trochanteral organ with 15 smooth spine-like chaetae ( Figure 16I ). Collophore anterior side with 1 mac, 2 smaller mes of equal length, and 5 proximal smooth mic; posterior side with 1 apical and 1 subapical smooth chaetae; lateral flap formula 5(s), 5(m), 5(i) smooth chaetae, 2 inferior larger ( Figure 18E ). Manubrial plate with 3 chaetae ( Figure 19C ). Mucro with 3 teeth (d1, ap, v1) (as S. peruana sp.n., Figure 19H ).

Etymology

The name “ unisetosa ” refers to dorsal chaetotaxy of the Th II to Abd I, each with one chaeta (from Latin: uni = one and setosa = seta or chaeta).

Remarks

See remarks of S. peruana sp.n. For additional information, refer to Table 2 .

Figures

Fig. 9. Habitus of Salina spp. (dorsal view): (A), Salina brasiliana sp.n.; (B), S. bellinii sp.n.; (C), S. bicolor sp.n.; (D), S. hamadae sp.n.; (E), S. maculipenis sp.n.; (F), S. peruana sp.n.; (G), S. serrana sp.n.; (H), S. tocantinensis sp.n. (distal half of Ant IV missing); (I), S. unisetosa sp.n.; (J), S. dedoris from Roraima state, Brazil; (K), S. tristani from Amazonas state, Brazil. Scale bars: 0.5 mm.

Fig. 10. Head structures of Salina spp.: (A–I), Ant I dorsal chaetotaxy (right): (A), Salina brasiliana sp.n.; (B), S. bellinii sp.n.; (C), S. bicolor sp.n.; (D), S. hamadae sp.n.; (E), S. maculipenis sp.n.; (F), S. peruana sp.n.; (G), S. serrana sp.n.; (H), S. tocantinensis sp.n.; (I), S. unisetosa sp.n., arrow indicates mac present or absent. (J–K), general structures of anterior and ventral head: (J), labral papillae, prelabral and labral chaetotaxy; (K), maxillary outer lobe and sublobal plate; (L), labial palp and proximal chaetae; (M), labial basolateral and basomedian fields.

Fig. 11. Head ventral chaetotaxy of Salina spp.: (A), Salina brasiliana sp.n.; (B), S. bellinii sp.n.; (C), S. bicolor sp.n.; (D), S. hamadae sp.n.; (E), S. maculipenis sp.n.; (F), S. peruana sp.n.; (G), S. serrana sp.n.; (H), S. tocantinensis sp.n.; (I), S. unisetosa sp.n.

Fig. 12. Th II–III dorsal chaetotaxy of Salina spp.: (A), Salina brasiliana sp.n.; (B), S. bellinii sp.n.; (C), S. bicolor sp.n.; (D), S. hamadae sp.n.; (E), S. maculipenis sp.n.; (F), S. peruana sp.n.; (G), S. serrana sp.n.; (H), S. tocantinensis sp.n.; (I), S. unisetosa sp.n.

Fig. 13. Abd I dorsal chaetotaxy of Salina spp.: (A), Salina brasiliana sp.n.; (B), S. bellinii sp.n.; (C), S. bicolor sp.n.; (D), S. hamadae sp.n.; (E), S. maculipenis sp.n.; (F), S. peruana sp.n.; (G), S. serrana sp.n.; (H), S. tocantinensis sp.n.; (I), S. unisetosa sp.n.

Fig. 14. Abd III–IV dorsal chaetotaxy of Salina spp.: (A–C), Abd III: (A), Salina brasiliana sp.n.; (B), S. hamadae sp.n.; (C), S. serrana sp.n. (D–I), Abd IV: (D), S. brasiliana sp.n.; (E), S. hamadae sp.n.; (F), S. serrana sp.n.; (G), S. bicolor sp.n.; (H), S. maculipenis sp.n.; (I), S. peruana sp.n.

Fig. 15. Abd V dorsal chaetotaxy of Salina spp.: (A), Salina brasiliana sp.n.; (B), S. bellinii sp.n.; (C), S. bicolor sp.n.; (D), S. hamadae sp.n.; (E), S. maculipenis sp.n.; (F), S. serrana sp.n.; (G), S. tocantinensis sp.n.

Fig. 16. Legs structures of Salina spp.: (A–I), trochanteral organ (right): (A), Salina brasiliana sp.n.; (B), S. bellinii sp.n.; (C), S. bicolor sp.n.; (D), S. hamadae sp.n.; (E), S. maculipenis sp.n.; (F), S. peruana sp.n.; (G), S. serrana sp.n.; (H), S. tocantinensis sp.n.; (I), S. unisetosa sp.n. (J–K), distal tibiotarsus and foot complex (posterior side): (J), fore leg; (K), hind leg.

Fig. 18. Collophore chaetotaxy of Salina spp.: (A–B), Salina maculipenis sp.n.: (A), anterior side; (B), lateral and posterior side. (C–E), complete chaetotaxy (lateral view): (C), S. peruana sp.n.; (D), S. serrana sp.n.; (E), S. unisetosa sp.n.; (F–G), S. tocantinensis sp.n.: (F), anterior side; (G), lateral and posterior side.

Fig. 19. Genital plate and furcula of Salina spp.: (A–B), Genital plate of Salina serrana sp.n. (ventral view): (A), ♂; (B), ♀. (C), Distal manubrium and proximal dens of S. brasiliana sp.n. (lateral view), arrow indicates chaeta absent in manubrial plate of some species. (D–I), distal dens and mucro (inner view):(D), S. brasiliana sp.n.; (E), S. bellinii sp.n.; (F), S. hamadae sp.n.; (G), S. maculipenis sp.n.; (H), S. peruana sp.n.; (I), S. serrana sp.n.