New genus, new species and new record of Neanurinae (Collembola, Neanuridae) for the Neotropics Author Queiroz, Gabriel C. Author Deharveng, Louis text Zootaxa 2015 4020 1 134 152 journal article 10.11646/zootaxa.4020.1.5 6e2e68cd-e170-4fac-951d-9f5bd9773e73 1175-5326 242063 3989C109-39F2-43FA-A5B1-B51B859A1BA4 Itanura brasiliensis ( Arlé, 1959 ) comb. nov. Figs 17–21 ; Tabs 4 , 5 Neanura brasiliensis Arlé, 1959 Paleonura brasiliensis ( Arlé, 1959 ) comb. nov. in Cassagnau & Oliveira, 1990 Material examined. Lectotype of Neanura brasiliensis Arlé, 1959 hereby designated. One female (slide 241). Itajubá, MG, Brazil . Leaf litter of Atlantic Forest. 11.x.1957 . About 950 m a.s.l. Arlé, R. leg. Deposited at MNRJ . Paralectotypes of Neanura brasiliensis Arlé, 1959 : one female on slide with lectotype ; same data as lectotype . Deposited at MNRJ . One male, one female and one juvenile (slide 246). Itajubá, MG, Brazil . Leaf litter of Atlantic Forest. 12.x.1957 . About 950m a.s.l. Arlé, R. leg. Deposited at MNHN . FIGURE 17. Dorsal chaetotaxy of Itanura brasiliensis (Arlé, 1959) comb. nov. from Itajubá, MG, type locality. Scale bar: 80 µm. FIGURES 18–21. Itanura brasiliensis (Arlé, 1959) comb. nov. from Itajubá, MG, type locality. 18. Apical part of labrum; 19. Detail of Oc and Af tubercles; 20. Tita II; 21. VT and half body ventral chaetotaxy of Abd II–VI. Scale bars: 20 µm (Figs 18– 20); 40 µm (Fig. 21). Other material examined. Cassagnau collection: four females on slide 753 (1); two specimens on slide 753 (2); three specimens on slide 753 (3); two females and four juveniles on slide 753 (4); three females and four juveniles on slide 753 (5). Itajubá, MG, Brazil . Leaf litter of Atlantic Forest. 1961. About 950 m a.s.l. Arlé, R. leg. Locality. Itajubá municipality, Minas Gerais State, Brazil . About 950 m a.s.l. Local approximate coordinates: 22°25′33″S, 45°27′10″W. Leaf litter of Atlantic Forest. Redescription . Length 0.50–1.01mm (n=5). Colour white in ethanol. Eyes 2+2, their diameter twice the length of Ocm socket diameter. Habitus stocky ( Fig. 17 ). Weak cryptopygy. Head and tergite tubercles moderately developed, differentiated in bosses, with tertiary granulation. Dorso-internal area of head and Th I–Abd IV without elementary tubercles. No reticulations. No plurichaetosis. No button-hole structures on tergites. Dorsal chaetotaxy constituted of ordinary chaetae and S-chaetae. Ordinary chaetae differentiated in dorsal macrochaetae of similar length and morphology, rather small, with serrations covering the apical 1/3 of their length, rounded apically; 1+1 mesochaetae of CL and 3 mesochaetae of (L+So) on head, 3 mesochaetae of L on abd IV and 2 of (DL+L) on Abd V smooth and acuminate; microchaetae, thinner, shorter, bent, acuminate, smooth. S-chaetae thinner, smaller than closest macrochaetae. Antennae shorter than head, less than two times as long as wide at basis. Ant I with 7 chaetae, Ant II with 11 chaetae. Ant III organ with 5 S-chaetae, guard chaetae Sgd and Sgv slightly longer and slender than S-chaetae of Ant IV. Ant IV organite as a very small rod, almost entirely burried in the integument; apical bulb as a single mass, fused to Ant IV tip. Eight subequal S-chaetae (S1–S8) on Ant IV. Buccal cone moderately elongated. Maxilla styliform, mandible thin and probably bidentate. Labrum rounded apically ( Fig. 18 ), elongated, labral formula?/?2,4. Labium with 4 basal, 3 distal and 3 lateral chaetae; x-papillae not observed. Head chaetotaxy as in Table 4 , with 12 chaetal groups: CL, Af, 2 Oc, 2 Di, 2 De, 2 DL, 2 (L+So). Tubercles moderately developed, Af composed of 8–9 elementary tubercles, separated from Oc and CL ( Fig. 19 ). Central area with A, B, D, F, G, Oca, Ocm and Ocp (C, E, H and O absent; A, B and F, G on the border of tubercles, D free). No tubercle Di (Di1 free). Tergite chaetotaxy illustrated on Fig. 17 . Tubercles moderately developed, most visible laterally from head to Abd VI. No tubercles Di from Th I to Abd IV. Th II–III with 3 chaetae Di. Tubercle De of Th–III with 3 chaetae (De1 and De3 as M, De2 as mi) and 1 S-chaeta. Abd V with tubercles Di adjacent on the axis, separated from De; two chaetae VL(+?L) located ventrally, without tubercle. Tubercle Di of Abd V with Di1 M, Di2 as mi and Di3 absent. Abd VI bilobed. S-chaetotaxic formula: 2+ms, 2/11111. Tita without chaeta M and with B4–B5 not longer than other long chaetae ( Fig. 20 ). Claw untoothed, not striated in its basal part, and devoid of secondary granulation. TABLE 4. Dorsal Cephalic chaetotaxy of Itanura brasiliensis (Arlé, 1959) comb. nov. from Itajubá-MG, type locality.

Group of chaetae	Tubercle	Number of chaetae	Type of chaetae	Chaetae
CL	+	2+2	M me	F G
Af	+ –	2+2 1+1	M mi	A, B D
Oc	+	3	mi M M	Oca Ocm Ocp
Di	–	1	M	Di1
De	+ –	1 2	M mi	De1 Di2, De2
DL	+ – –	2 1 1	M me mi	DL1, DL5 DL4 DL2
L+So	+ –	3 1 3	M me me	L1, L4, So1 L2, So3, So4, So6

Ventral chaetotaxy of Abd I–VI as in Fig. 21 . Furcal rest with 3 chaetae, apparently devoid of mi. Postcephalic chaetotaxy summarized in Table 5 . TABLE 5. Postcephalic chaetotaxy of Itanura brasiliensis (Arlé, 1959) comb. nov. from Itajubá-MG, type locality.

Di	De	DL L	Scx2	Cx	Tr	Fe	Tita
Th I 1	2	1 –	?	?	?	?	18
Th II 3	3+S	3+S+ms 3	?	?	?	?	18
Th III 3	3+S	3+S 3	?	?	?	?	17
continued.

Abd I 2	2+S	2	3	VT: 4
Abd II 2	2+S	2	3	Ve: 4 (Ve1 present)
Abd III 2	2+S	2	3	Fu: 3; Ve: 3
Abd IV 2	2+S	2	6	Ve: 7; VL: 4
Abd V 2+2	3+S	Ag: 3; VL(+?L): 2
Abd VI	7	Ve: 10–11; An: 2
Itanura brasiliensis Figs 22–27	comb. nov.,	specimens	from	Itatiaia, Rio de Janeiro State

Material examined. Two females (#2147 CM/ MNRJ ), 15.vii.2011 , Queiroz G.C. leg. Deposited at MNRJ in Brazil and MNHN in Paris, France . Locality. Parque Nacional do Itatiaia (ICMBio), Itatiaia municipality, Rio de Janeiro State, Brazil . 2300–2500 m a.s.l. Local coordinates: 22º22'59"S , 44º40'1"W . Leaf litter and soil of "campos de altitude". Remarks. Labium with 2 x-papillae visible ( Fig. 24 ). Head with Af composed of 7–8 tubercles separated from Oc and CL. Leg chaetotaxy of legs I–III as follows: Scx2– 0, 2, 2; Cx– 3, 8, 8; Tr– 6, 6?, 6?; Fe– 12?, 11, 10?; Tita– 18, 18, 17. Furcal rest with 3 chaetae, devoid of mi; Ve chaetae, on ventral anal valves, 11–12 ( Fig. 26 ). For other differences see Table 6 .