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 gen. nov. Type species: Neanura brasiliensis Arlé, 1959 , by present designation Diagnosis. No hypodermal blue pigment, white in ethanol. Ant III organ complete (5 S-chaetae). Ant IV with S 1– 8 subequal. Eyes 2+2, without dark pigment. Labral chaetotaxy: 0/2,4; labral ventro-distal sclerotisations rounded apically. Maxilla styliform. Mandible slender, with 2–3 teeth. No reticulations. Dorsal tubercles present, small, the internal ones not developed, those of Abd IV–VI larger. Head: tubercle Fr fused to An across midline, forming an Af tubercle, not fused to Oc or CL; no tubercles Di; tubercle De present; DL and (L+So) tubercles separated in lateral area. No tubercles Di on Th I–Abd IV, other tubercles all present; on abd V tubercles Di adjacent across midline, not fused; tubercles De and DL fused together laterally; on Abd VI, tubercles separated middorsally. No plurichaetosis. Standard arrangement and number of S-chaetae on half tergites of Th II–Abd V: 2 + ms, 2/11111. Dorsal ordinary macrochaetae ciliated, subparallel, with a small rounded apex. Claw untoothed, M-chaeta absent on tibiotarsi. Etymology. After "Ita", that means stone in the indigenous language Tupi; a reference to the rocky mountains of Southeast Brazil , where the species of the genus was found. Remarks. This new genus is the only Paleonurini genus endemic of the Neotropical region, as Paramanura Cassagnau, 1986, previously described from Venezuela highlands, has been subsequently assigned by its author to Pronura ( Cassagnau, 1996 ) . The body tubercles of Itanura gen. nov. are intermediately developed compared to those of Australonura Cassagnau, 1980 and Phradmon Greenslade & Deharveng, 1991 , which have stronger tubercles, and those of Paleonura Cassagnau, 1982 and Pronura Delamare Deboutteville, 1953 , where tubercles are not or weakly differentiated. The combination of characters that distinguish Itanura gen. nov. from other Paleonurini genera is the presence of a tubercle Af on head, the adjacence of Di tubercle on Abd V and the absence of tubercles Di from head to Abd IV. The main differences of tubercle arrangement on head and Abd IV–VI between Southern Hemisphere tuberculate genera of Paleonurini are summarized in Figs 11–16 . Evolutionary relationships between these genera are difficult to hypothetize from morphology alone, given the reticulate evolution of tubercule arrangement, and convergence may not be ruled out. Molecular approaches may be here the only way to solve the problem. TABLE 3. Main characters of species of the genus Ectonura Cassagnau, 1980.

New Caledonia	Chaetae on Ant I	Chaeta A on head	Tubercle Di of head fused	Tubercle Di on Th I–III	Tubercle Di on Abd I– IV	De of Abd I–III	L of Abd I–III	Tubercle De of Abd IV	Tubercle Di of Abd V fused	(De+DL) of Abd V
araucariae (Yosii, 1960)	?	–	–	–,–,–	–	1+S	333	1+S	–	3–4+S
judithae Deharveng & Bedos, 2002	8	–	–	+,–,–	–	2+S	333	1–2+S	–	4+S
koumac Deharveng & Bedos, 2002	7	–	–	–,+,+	+	1+S	222	1+S	+	2+S
lata Deharveng, Weiner & Najt, 1997	7	–	–	–,–,–	–	2+S	333	2+S	–	5+S
longirostris Deharveng, Weiner & Najt, 1997 minima Deharveng, Weiner & Najt, 1997	8 7	– –	– –	–,–,– –,–,–	– –	2+S 1+S	333 333	2+S S	– –	3+S 3+S
paralata Deharveng, Weiner & Najt, 1997	8	–	–	–,–,–	–	2+S	333	2+S	–	4+S
proxima Deharveng, Weiner & Najt, 1997	8	–	–	–,–,–	–	2+S	333	1+S	–	4+S
pulchra Deharveng, Weiner & Najt, 1997	7	–	–	–,–,–	–	2+S	333	2+S	+	5+S
sensillata Deharveng & Bedos, 2002	9	–	–	–,–,–	–º	3+S	333	3+S	–	5+S
sylvatica Deharveng, Weiner & Najt, 1997	8	–	–	–,–,–	–	2+S	211	2+S	–	3+S
South Africa
barrai Janion, Bedos & Deharveng, 2011	7	+	–	–,–,–	–	2+S	333–4	ª	–	4+S
coatesi Barra, 1994	6	–	+	+,+,+	+	2+S	333	1+S	+	5+S
monochaeta Janion, Bedos & Deharveng, 2011 natalensis (Womersley, 1934) oribiensis (Coates, 1968)	7??	– + –	+ + +	–,+,+ +,+,+ +,+,+	+ + +	1+S 2+S 2+S	222 333 333	1+S 1+S 1+S	– + +	* 4+S 4+S
Brazil (MG)
snowdeni sp. nov.	7	–	–	–,–,–	–	2+S	222	2+S	+	3+S

* De fused to DL = 4+S. *=** Tubercles of Abd V fused, forming a single tubercle (Di+De+DL) with 1+1+S+1. º=*** Tubercle Di of Abd IV present.