Hypogastrura exigua Gisin 1958

• Main Author: Skarżyński, Dariusz
• Format: Other/Unknown Material
• Language: unknown
• Published: 2011
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Entognatha; Collembola; Hypogastruridae; Hypogastrura; Hypogastrura exigua; Seta; Poa alpina; Ranunculus glacialis; Saxifraga oppositifolia
• Online Access: https://zenodo.org/record/6192148; https://doi.org/10.5281/zenodo.6192148

Hypogastrura exigua Gisin, 1958 Figs 2–8 Material examined. Holotype, female on slide, Ma 3 a, Italy, Dolomites, Padon, N Marmolada, 2,300–2,500m a.s.l., leg. Marcuzzi. Paratypes: 1 male, 8 juveniles, same data as holotype (MNHG). Other material. Italy (Dolomites, Marmolada): 1 female, Ma 9 c, 2,200m a.s.l., alpine grassland, leg. Marcuzzi (MNHG); 1 female and 1 male, Ma 19 a, 2,600m a.s.l., pioneer saxifrages and Arabis sp., leg. Marcuzzi (MNHG); 53 ex., mosses on rocks below pass Forcella de la Marmolada, 2,500–2,800m a.s.l., viii. 2009, collector unknown (DBET); Austria (other material of H. parvula from Hohe Tauern, Glockner group cited in Haybach (1972): 11 ex., G 606 (nr. 1), Wasserfallwinkel, foreground of Wasserfallkeeses, 2,640m a.s.l., zone of Saxifraga oppositifolia, tussock of Saxifraga with Bryum cf. pallescens, 7.vii. 1967, leg. H. Franz (NHMV); 6 ex., Gl 9 (nr. 22), east slope of Gamsgrube, tussock of Salix serpyllifolia, Ranunculus glacialis, Sesleria sp., Poa alpina vivipara, 2,780m a.s.l., leg. G. Haybach (MNHG). Redescription. Body length up to 0.8 mm. Colour spotted grey-brown. Granulation fine and uniform, 6–8 granules between setae p 1 on abd. V. Chaetotaxy of head typical of the genus. Setae short and smooth. Body sensilla (s) 2–3 times longer than ordinary setae, fine and smooth. Dorsal chaetotaxy of th. II and abd. III–VI as in Figs. 2–3. Th. I with 3 + 3 setae. Th. II with setae m 2, m 3 and m 4. Th. III with setae m 4 and sometimes m 3. Setae p 3 and p 7 on abd. IV present. Abd. V with setae a 2 in backward position, setae p 2 present and m-setae absent. Subcoxae I, II, III with 1, 2, 3 setae respectively. Microsensillum on thoracic tergum II present. Ant. IV with simple apical vesicle, subapical organite (or), microsensillum (ms), 4 (1 dorsal and 3 lateral) curved, short, cylindrical sensilla (Fig. 5). Ant. III-organ with two long (outer) and two short (internal) sensilla. Microsensillum on ant. III present (Fig. 5). Ant. I with 7 setae (seta p’ absent). Ocelli 8 + 8. Postantennal ...