Hypogastrura unguiculata

Fig. 24 – 26, Tab. 1

Redescription. Size. Lectotype of 0.825 mm. Tegument. Tegumentary granulation coarse, 5 – 6 granules between p 1 chaetae on Abd V. Weak differentiation between microchaetae and macrochaetae; macrochaetae slightly long, ciliated (Fig. 25). Head. Tubercles and spines absent. Eyes 8 + 8. PAO shorter than nearest eye in diameter, composed of 4 lobes, without accessory tubercle, ratio PAO: nearest eye = 0.4 – 0.5. Labral margin without papillae. Thorax. Th II with 3 rows of chaetae, 6 + 6 in a row, as a 1 – 6; 5 + 5 chaetae in m row, as m 1, m 3 – 5, m 7 as s, m 2 and m 6 absent; 6 + 6 chaetae in p row, as p 1 – 6, p 4 as s (Fig. 24). Empodial appendage lance-shaped, with narrow basal lamella. Tibiotarsi with one tenent hair weakly knobbed. Abdomen. Dorsal chaetotaxy of Abd IV-VI as in Fig. 25. Abd IV with 4 + 4 chaetae in a row, as a 1 – 4; 5 + 5 chaetae in m row, as m 1, m 3 and m 5 - 7; 7 + 7 chaetae in p row, as p 1 – 7, p 5 as s; Abd V with three rows of chaetae, 3 + 3 chaetae in a row, as a 1,2 / 3,4; 3 + 3 chaetae in m row, as m 1,2,4; 4 + 4 chaetae in p row, as p 1 – 3 and p 5, p 3 as s. Abd VI with three rows of chaetae, 2 + 2 chaetae in a row, 2 + 2 chaetae in m row and 2 + 2 + 1 chaetae in p row (unpaired p 0 and p 1 – 2). Ventral tube with 4 + 4 chaetae. Retinaculum with 4 + 4 teeth, no chaetae on corpus. Dens posteriorly with coarse granules and 7 chaetae. Mucro with apex straight, broad outer lamella long, straight, without inner lamella, with a small subapical tooth (Fig. 26). Length ratio of mucro to dens = 1: 2.6 - 2.8. Two short, straight anal spines on Abd VI, slightly bigger than their basal papillae.

Type material. Lectotype of unknown sex on separate slide, here designated, labelled: “ INDIA: Uttar Pradesh, Loc: Kansrao Forest, Dehradun dist., Dt: 5. II. 1965, Coll: S. K. Mitra, PARATYPE, Hypogastrura unguiculata Mitra, 1966 ” (Slide Nº 499 / H- 14 / ZSI / KOL, kept in the Apterygota Section, Zoological Survey of India), the only known specimen; the holotype is lost