Salina bellinii, 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 : 104-111

Salina bellinii sp.n. Oliveira & Cipola

Figures 9 B , 10B , 11B , 12B , 13B , 14A and D , 15B , 16B , 17 C-D, 18B, 19E ZooBank: http://zoobank.org/ B4A5BAD7-4B35-474A-8080-775A42B2F5EE

Diagnosis

Body with scarce blue pigmentation, usually on lateral; Ant I with 3–4 mac; cephalic groove only with ciliate chaetae; Th II–Abd I with 2–5, 5–9, 2–4 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 7 anterior,

2 posterior and 10 lateral flap chaetae; trochanteral organ with 13 spine-like chaetae; manubrial plate with 2–3 chaetae.

Type material

Holotype ♂ on slide (COLLE 043/INPA): Brazil, Pará, Oriximiná municipality, Porto Trombetas district, “Platô Aviso”, 01°45’01”S, 56°30’30” W, Amazon forest , 180 m, 06-14.viii.2008, Malaise-trap, ML Oliveira & Y Antonine coll. Paratypes on slides (COLLE 043A-H/INPA): 2 ♂ and 7 ♀ and 13 specimens in alcohol, same data as holotype .

Additional examined material

1 ♀ on slide and 1 specimen in alcohol (INPA): Brazil, Roraima, Caracaraí municipality, National Park “Serra da Mocidade”, 01°36’N; 61°54’W, Amazon forest , 600 m, 15-26.i.2016, Malaise-trap, FF Xavier, R Boldrini & P Barroso coll. 1 juvenile on slide (INPA): idem, except yellow plate trap . 1 ♂ on slide (INPA): Pará, Alter do Chão municipality, “Porto Novo district”, 02°37’48”S, 54°58’54”W, Amazon forest , 14 m, 01-02.x.2012, Pitfall-trap, JMC Nascimento coll. 1 ♀ on slide (INPA): Rurópolis municipality, waterfall of “Grin”, road BR-163, 04°05’40”S, 55°00’53”W, Amazon forest , 68 m, 05-06.xi.2012, Pitfall-trap, JMC Nascimento coll. 2 ♂, 1 ♀ and 1 juvenile in the same slide and 3 specimens in alcohol (INPA): Belém municipality, urban area, 01°24’07”, 48°26’32”W, 14 m, 08-10.i.2013, Pitfall-trap, RS Sovano coll. 1 ♀ on slide (INPA): Salinópolis municipality, urban area, 00°37’28”S, 47°20’31”W, Amazon forest , 17 m, 28-30.xii.2012, Pitfall-trap, MBCS Graça coll. 1 ♀ on slide (INPA): Rio Grande do Norte, Baía Formosa municipality, Private Reserve of Natural Patrimony (RPPN) “Mata Estrela”, 06°23’S, 35°00’W, 60 m, 11.xii.2012, Pitfall-trap, DD Silva coll. 1 ♀ on slide (INPA): Paraíba, Sapé municipality, urban area, 07°06’18”S, 35°14’03”W, 106 m, 17.iii.2014, aspirator, DD Silva coll. 1 ♀ on slide (INPA): Bananeiras municipality, State Ecological Reserve of “Goiamunduba”, 06°44’S, 35°36’W, 475 m, 18.iii.2014, beating tray, DD Silva coll.

Description

Total length (head + trunk) of holotype 1.53 mm. Specimens pale white with dark blue pigments on Ant I–IV, strongly on anterior head, intersegmental areas of antenna and Th II to Abd III; and one longitudinal inner spot on all tibiotarsi. Eyepatches black ( Figure 9B ).

Head. Ant I dorsally with 3–4 mac (one outer distal present or absent) and 5 basal spiny smooth mic ( Figure 10B ). Posterior labial chaetotaxy series ‘CG’ with 6 ciliate chaetae (CG1-3, CG5, CG7–7e); series ‘PLM’ with 2 ciliate chaetae (PLM1–2); series ‘PLE’ with 2 ciliate chaetae (PLE1–2); lateral side with about 14 ciliate chaetae ( Figure 11B ).

Dorsal chaetotaxy. Th II with 2–5 ‘p’ mac (p1–4), p1i, p2 and p4 present or absent. Th III with 5–9 ‘p’ mac (p1–5), p1i2, p2a, p3p and p4 present or absent ( Figure12B ).Abd I with1‘a’ mac(a3)and2–3‘p’ mac(m3–5), a3 and m5 present or absent ( Figure 13B ). Abd III with 1 ‘a’ mac (a7), 2 ‘m’ mac (am6, pm6), and 3 ‘p’ mac (p6, p7i 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 3 ‘a’ mac (a3, a5–6); 4–5 ‘m’ mac (m0, m2–3, m5–5a), m0 present or absent; and 3 ‘p’ mac (p1, p3–4) ( Figure 15B ).

Appendages. Trochanteral organ with 13 smooth spine-like chaetae ( Fig 16B ). Collophore anterior side with 2 subapical mac of unequal length and 1 median mes, and 4 proximal smooth mic; posterior side with 1 apical and 1 subapical smooth chaetae; lateral flap formula 2(s), 3(m), 5(i) smooth chaetae, 1 median and 3 inferior larger ( Figures 17 C-D). Manubrial plate with 2–3 chaetae ( Figure 19C ). Mucro with 3–4 teeth (d1, ap, v1-2), v2 teeth present or absent ( Figure 19E ).

Etymology

The species epithet honors our friend Dr. Bruno C. Bellini, Collembola researcher from Brazil.

Remarks

Salina bellinii sp.n. resembles S. tristani Denis, 1931 and S. zhangi by general morphology, including scarce pigmentation on Ant, trunk laterally and legs, dorsal chaetotaxy of Th II–Abd I with more than 2, 5, 2 central mac, respectively, and Abd IV with 8 central mac (see Denis 1931; Mari-Mutt 1987b; Soto-Adames 2010; Bellini & Cipola 2017). However, S. bellinii sp.n. differs from these species by cephalic groove only with ciliate chaetae (2 serrated mic in S. zhangi ), trochanteral organ with 13 spine-like chaetae (14 in S. tristani and 17 in S. zhangi ), and collophore with 7 anterior chaetae (2 mac unequal and 1 mes), 2 posterior chaetae and lateral flap with 10 chaetae. In Salina zhangi has 9–10 anterior chaetae (2 mac unequal, without mes), 5–6 posterior chaetae and lateral flap with 14 chaetae, while S. tristani 4–5 posterior chaetae.

The dorsal chaetotaxy of S. bellinii sp.n. differs by absence of m1, p1p, p5 on Th II, p1p and p2p on Th III, and a1 and a2 on Abd I (generaly present in S. tristani and S. zhangi ). The Abd III of S. bellinii sp.n. differs by 6 lateral mac (6 or less in S. zhangi ) and Abd IV with 10 lateral mac (7 in S. tristani and 9 in S. zhangi ). 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. 17. Collophore chaetotaxy of Salina spp.: (A–B), Salina brasiliana sp.n.: (A), anterior side; (B), lateral and posterior side. (C–D), S. bellinii sp.n.: (C), anterior side; (D), lateral and posterior side. (E), complete chaetotaxy (lateral view) of S. bicolor sp.n. (F–G), S. hamadae 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.