Australotomurus barbatus Mari-Mutt & Greenslade, 1985

Bellini, Bruno Cavalcante, Greenslade, Penelope, Baquero, Enrique, Jordana, Rafael & Souza, Paolla Gabryelle Cavalcante De, 2022, A synthesis of the current knowledge on the Australian Orchesellidae (Collembola, Entomobryoidea), Zootaxa 5115 (2), pp. 221-257 : 237

Australotomurus barbatus Mari-Mutt & Greenslade, 1985

Figs 8–9 , Tables 2 – 3

Diagnosis. Size of adult specimens about 2 mm, dorsal head mostly unpigmented, with dark pigments around the antennal bases and few small spots on the center head and behind the eyes, dorsal trunk with three longitudinal stripes of dark pigment. Ant. II basally subsegmented (antennae with six segments). Males’ Ant. Ib internally with about 45 modified short densely ciliate chaetae plus 12–13 minute smooth chaetae, Ant. IIb dimorphic chaetae less discernible. Males’ Ant. II straight (not angled). Antero-lateral head of males with a dense cluster of about 65 short ciliated chaetae. Labial basomedian field posteriorly with 4–7 ciliate chaetae internal to E. Dorsal head with A3, A4–4e, A6p, A7i, M1, M2–2p, M3i, S0’, S2, S4i, S4a, S4e, S5a, S5e, Ps 2, and Ps 5 mac, M0 and Ps 3 mac absent ( Fig. 9A ). Abd. II with a1a, a2a2, a3a, m3ep, and p4 mac, plus four mac on the m3ea complex, m4 mac absent ( Fig. 9B ); Abd. III with a2–2a2, a3, m3ea mac, m3eai and p3 mac present or absent, m 3ei and m3p mac absent ( Fig. 9C ); Abd. IV with A2–3, B3, B5, and xa mac, Ae5 present or absent, A5, xp, C4, T1 , and T6 mac absent ( Fig. 9D ). Trochanteral organ with about 25 spine-like chaetae. Unguis with three unpaired inner teeth. Tenaculum with 5 – 7 chaetae (adapted from Mari-Mutt & Greenslade 1985).

Figures

FIGURE 8. Distribution of Australian Orchesellidae.

FIGURE 9. Dorsal macrochaetotaxy of Australotomurus barbatus: A, head; B, Abd. II; C, Abd. III; D, Abd. IV.