Edoughnura rara
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Ordo: Collembola
Familia: Neanuridae
Genus: Edoughnura
Name
Edoughnura rara Deharveng, Louis, 2007 – Wikispecies link – Pensoft Profile
- Edoughnura rara Deharveng, Louis, 2007, Zootaxa 1652: 58-61.
Materials Examined
Type material. Holotype female in slide, Algeria, wilaya of Annaba, Serraidi, Edough massif, below Fontaine Romaine, 750 m, litter in Quercus canariensis forest (zen oak), 18.i. 2005, Hamra Kroua leg. (sample ALG-HK0501/EDlcz 6). Paratypes: two females in slide in the same sample; one male in slide, ibid, below Fontaine Romaine, 750 m, moss on soil in Quercus canariensis forest (zen oak), 18.i. 2005, Hamra Kroua leg. (sample ALG-HK0501/EDms); one female in slide, ibid, above Fontaine Romaine, 800 m, 22.i. 2001, Hamra Kroua leg. (sample ALG-HK01/ED03).
Cephalic chaetotaxy Tubercle Number of chaetae Type of chaetae Chaetae CL+Af yes17-18mes A, A', B, C, (C'), D, F, G, O, O' Oc yes3mes Oca,m,p Di yes2-(3)mes Di1, Di2De yes2mes De1, De2DL yes6mes DL1 to 6L+So yes15-17mes Homologies impossible
Vi 5
Ve 7 or 9
Labrum 2 / 2,4
Labium 9-10 chaetae,? no x Ant. I-II 7, 12
Ant. III 17 + 5S
Ant. IV or, 8 S, i, 12mou
Postcephalic chaetotaxy Holotype female, one paratype female and one paratype male deposited in the collection of the Museum national d’Histoire naturelle de Paris (France); two paratypes females deposited in the collection of the Laboratoire de Biosystématique et Ecologie des Arthropodes (Constantine, Algeria).
Description
Description. Body length: 0.7–0.9 mm. Habitus of a Deutonura, but more stout and with shorter antennae. Colour: very pale, mottled grey-blue. Ocelli 2 + 2, pigmented, subequal, hardly larger than surrounding secondary granules and often difficult to observe. All dorsal tubercles well developed (Fig. 1, Tab. 1), with tertiary granules made of 5–15 rounded secondary granules, but not underlined by well-marked reticulations. Abd.V slightly overlapping Abd.VI in dorsal view. Dorsal ordinary chaetae rather thin, bent, inconspicuously or weakly sheathed, pointed or finely blunt, smooth, sometimes bifurcate; some longer and thicker, laterally and on Abd.V-VI. On Abd.V, Di2 and Di3 three times shorter than Di1. S-chaetae very thin, shorter than the closest macrochaetae. Slight plurichaetosis on head, no plurichaetosis on tergites. S-chaetae formula on half tergites from Th.I to Abd.V: 0, 2 +ms, 2 / 1, 1, 1, 1, 1. Head. S-chaetae of Ant.IV of medium length, thick, slightly bent, with S 1 and S 2 slightly shorter and thinner than others; apical vesicle trilobed. Buccal cone short but not truncated (Fig. 2). Cardo strongly bent in its externo-distal part. Maxilla with two thin appressed lamellae, one distally bidentate and one unidentate, mandible as a long, rather thin, ciliated lamella, with two very thin, cilia-like basal teeth (Fig. 3), turned back into the head. Labium with 4 basal (E,F,G,f), 3 distal (A,C,D) and 2-3 lateral (c,d, and sometimes e) chaetae, with chaetae A as long as C and macrochaeta F shift antero-externally (Fig. 2); x-papillae not seen. Labrum truncated-rounded, with ventral sclerifications narrow; its 2 + 2 distal chaetae long and subequal; 1 + 1 lateral prelabral chaetae present, the two inner ones apparently absent (Fig. 4). Eleven tubercles on head (Fig. 1). Af fused to CL with an area devoid of tertiary granules between C and F. Chaeta E absent. Supernumerary chaetae on the tubercle (Af+CL): two at the level of A, two at the level of O, one uneven at the level of C (sometimes absent), and several on the tubercle (L+So) (Fig. 1). Chaetae Di1 about 1.5 times longer than Di2, and De1 about 2 times longer than De2. Body and appendages chaetotaxy and tubercles (as in Fig. 1 and Tab. 1). Di tubercles fused on Abd.V, Abd.IV and on Abd.III, separated on Abd.II (not always clearly) and forward. Di1, Di2 and Di3 subequal and arranged in an oblique line on Th.II–III. S-chaetae at level of De2 on Th.II–III and at level of De1 on Abd.I– III (Fig. 1). On Abd.V, Di2 and Di3 short, subequal, at same level, slightly posterior to the edge of the tubercle. Furcal rest as a weak integument swelling, with 6 chaetae and no distinct microchaetae. Anus as a more or less transversal furrow. Tibiotarsal chaetotaxy 18, 18, 17 (chaeta M absent). Claw untoothed.
Etymology
Etymology. The name of the species refers to its rarity compared to other Neanurinae of the Edough massif, and the uniqueness its morphological characteristics.
Taxon Treatment
- Deharveng, Louis; Kroua, Salah Hamra; Bedos, Anne; 2007: Edoughnura rara n. gen., n. sp., an enigmatic genus of Neanurinae Collembola from the Edough Massif (Algeria), Zootaxa 1652: 58-61. doi
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