Furculanurida tropicalia, Queiroz, Gabriel C. & Fernandes, Liliane H., 2011

Queiroz, Gabriel C. & Fernandes, Liliane H., 2011, New Brazilian species of Furculanurida Massoud, 1967 (Collembola: Neanuridae), Zootaxa 2805, pp. 57-64 : 59-62

Furculanurida tropicalia sp. nov.

Figs 1–14 ; Tabs 2, 3

Type material. Holotype female. Brazil, State of Espírito Santo, Sooretama municipality, Sooretama Biological Reserve (ICMBio), forest leaf litter of the Atlantic Forest, about 100 m asl and 40 km from the coast line. Locality coordinates: 19°3'8.53"S, 40°8'56.12"W, 25.iv.2008, collection number CM/ MNRJ 1958, G. Queiroz coll. Paratypes (11): one male and one female from a forest fragment 3 km far from Sooretama Biological Reserve, 10.iv.2007, CM/ MNRJ 1829; five males, one female and three juveniles, same data of holotype. Deposited at Museu Nacional do Rio de Janeiro/Universidade Federal do Rio de Janeiro, Brazil.

Description. Habitus typical of the genus. Body length of holotype (female): 0,93 mm, length of paratypes: 0.60–1.3 mm. Color in ethanol: light blue to light gray. Dark diffuse pigment on ocelli.

Ratio head: antenna = 1: 1.1. Ant I with 7 chaetae. Ant II with 11 chaetae. Ant III and IV fused dorsally, ventral separation marked. Sensory organ of Ant III with two small rod shape sensilla; two longer and subcylindrical guard sensilla, the ventral longer than the dorsal sensilla; ventral microsensillum present ( Fig. 1 ). Apical bulb trilobed. Ant IV with six sensilla; dorsolateral microsensillum absent. Subapical organite round and very near to the apical bulb ( Fig. 2 ).

Eyes 8+8. PAO almost two times larger than ocellus A, bearing 8–10 vesicles disposed in a rosette. Chaetotaxy of head as in Fig. 3 . Buccal cone typical of the genus. Labium bearing chaetae A–G ( Fig. 4 ). Pre-labral/labral formula: 2/2342. Maxillae styliform without tooth or lamellae; mandible with 4 teeth: two small subequal apical teeth and two larger basal teeth ( Fig. 5 ).

Dorsal chaetotaxy composed of micro (8 µm), meso (12–14 µm) and macrochaetae (18–22 µm). Sensilla long, with a clavate apex, and becoming longer towards the last segments of abdomen (Sensilla of Th II = 55 µm; Abd V = 70 µm) ( Fig. 6 ). Sensillar formula by half tergum: 022/ 111110. Ratio micro: meso: macro chaetae: sensilla = 1: 1.5: 2: 7. Ventral chaetotaxy of Abd II–VI as in Fig. 7 . Dorsal chaetotaxy of Abd VI as in Fig. 8 .

Chaetotaxy of legs summarized in table 2. Tenent hair on tibiotarsi accuminated. Unguis with one basal inner tooth ( Fig. 9 ). Ventral tube with 3+3 chaetae. Tenaculum with three teeth on each ramus ( Fig. 10 ). Furcula present: manubrium with 7+7 ventral chaetae; dens with 6+6 chaetae; mucro separated from dens with two lamella tapering and apex slightly hooked ( Fig. 11 ). Ratio Manubrium: Dens: Mucro = 2.4:1.6:1.0. Each anal valve with 14–15 chaetae and 2 chaetae hr; Abd VI with 3 setulae in the ventral side ( Fig. 12 ). Genital plates of female and male as in Figs 13 and 14 , respectively.

Scx I Scx II Cx Tr Fe Tita Leg I 1 0 3 6 13 19 Leg II 2 2 6 6 12 19 Leg III 2 2 7 6 11 18 Etymology. The species is named after the Brazilian cultural movement called " Tropicália " of the late 1960's. The movement was specially creative and important in relation to the popular music.

Discussion. Furculanurida tropicalia sp. nov. shares some characters with F. goeldiana Arlé & Rufino, 1976 , such as mandible with four teeth and a circular PAO with 8–10 vesicles. However, due to the succinct description of F. goeldiana , leaving out characters such as body chaetotaxy, antennal organs, legs, etc, it is not possible to establish further similarities.

Furculanurida tropicalia sp. nov. is well characterized and distinguished from other members of the genus by being the only one that presents 8+8 eyes. Table 3 summarizes the main characters and the differences among species of Furculanurida .

Figures

FIGURES 1 – 6. Furculanurida tropicalia sp. nov.: 1, Ventral chaetotaxy of Ant III – IV; 2, Dorsal chaetotaxy of Ant III – IV; 3, Dorsal chaetotaxy of the head with detail of PAO; 4, Chaetotaxy of the right labial palp; 5, Mandible; 6, Dorsal chaetotaxy of the body with detail of sensilla.

FIGURES 7 – 14. Furculanurida tropicalia sp. nov.: 7, Ventral chaetotaxy of Abd II – VI; 8, Dorsal chaetotaxy of Abd VI; 9, Tibiotarsus of leg II; 10, Tenaculum; 11, Furcula; 12, Chaetotaxy of anal valves and Abd VI; 13, Female genital plate; 14, Male genital plate and anal valves.