Simonachorutes romeroi Simón, 1986,

Skarżyński, Dariusz, Arbea, Javier I. & Piwnik, Agata, 2016, Simonachorutes, a new genus of Pseudachorutinae (Collembola, Neanuridae) from Europe, Zootaxa 4205 (2), pp. 171-179 : 172-175

Simonachorutes romeroi Simón, 1986 comb. nov.

Figs 1–9 , Tab. 1

Pseudachorutes romeroi Simón 1986: 300

Material examined. Holotype male, Juniperus thurifera leaf-litter, 1060 m a.s.l. Macizo de Ayllón , Tamajón, Guadalajara ( Spain), 24.iv.1980, leg. J.C. Simón Benito ( MNCN, sample C119, Ent N ° Cat. 78438) ; paratype, 1 ex. ( MNCN, Ent N ° Cat. 78435), same data as holotype; 1 juv., Echinospartum horridum, Genista scorpius and Buxus sempervirens scrub, 138 m a.s.l., Chía near Sahún, Huesca ( Spain), 27.vii.1995 . leg. J.C. Simón Benito ( MNCN, sample C2354, Ent N ° Cat. 33207); 1 female, Juniperus thurifera leaf-litter, 1140 m a.s.l., Abejar near Soria, Sierra de Cabrejas ( Spain), 28.iv.2005 . leg. A. Signoret Moreno (MNCN, sample S1P14, Ent N° Cat. 57540).

Redescription. Body length without antennae 0.56–0.66 mm. Colour in alcohol bluish-grey, ocular plate bluish-black. Granulation fine.

Antennae shorter than head ( Fig. 1 ). Ant. I with 7, Ant. II with 11 and Ant. III with 22 ordinary setae. Ant. III and IV fused dorsally and separated ventrally. Sensory organ of Ant. III consisting of two small internal sensilla and two equal in size subcylindrical guard sensilla; two guard setae between them, ventral microsensillum present. Ant. IV with simple or slightly trilobed apical vesicle, 5 subcylindrical sensilla (S2 absent), dorsoexternal microsensillum and subapical organite ( Fig. 5 ).

8 + 8 ocelli. PAO oval, 1.4–1.7 times larger than neighbor ocellus, with 9–10 vesicles ( Fig. 6 ). Buccal cone very long ( Fig. 2 ). Mandibles absent, maxilla styliform. Labrum long pointed at apex, with 2, 4, 2 setae ( Fig. 4 ); prelabral setae not visible. Labium without organites x and papillate setae L, with 12 + 12 ordinary setae ( Fig. 3 ). Perilabial area with 5 + 5 subequal setae ( Fig. 3 ).

Dorsal chaetotaxy as in Fig. 1 . Setae and sensory setae (s) short. Microsensilla on Th. II present. Head with unpaired seta d1 present and seta a0 absent. Th. I with 3 + 3 setae. Th. II with 11 + 11 setae (a2 present, a5 and m4 absent) and Th. III with 10 + 10 setae (a2, a5 and m4 absent). Abd. I–III with 8 + 8 setae (a3, m3 and m4 absent), Abd. IV with 9 + 9 setae (m-row setae absent). Abd. V with setae a2 absent and p2 present ( Fig. 9 ). Ventral chaetotaxy as in Fig. 2 . Thoracic sterna without setae, ventral tube with 4 + 4 setae.

Dens with six setae, mucro curved, with inner lamella ( Fig. 8 ). Mucro/dens ratio: 3. Mucro + dens/claws III ratio: 2.5. Manubrium with 12 + 12 posterior setae. Retinaculum with 3 + 3 teeth. Each anal valve with two setae hr.

Tibiotarsi I, II and III with 15, 15 and 14 setae, respectively ( Fig. 7 ). Femora I, II and III with 11, 10 and 9 setae, trochanters I, II and III with 5, 5 and 4–5 setae, coxae I, II and III with 3, 7 and 7 setae, subcoxae 2 of legs I, II and III with 0, 2 and 2 setae, subcoxae 1 of legs I, II and III with 1, 2 and 2 setae, respectively. Claw without inner tooth and lateral teeth. Empodial appendage absent ( Fig. 7 ).

Remarks. S. romeroi comb. nov., S. agrensis comb. nov. and S. weinerae sp. nov. clearly differ in characters summarized in Tab. 1 .

Figures

FIGURES 1 – 2. Simonachorutes romeroi: 1, dorsal chaetotaxy; 2, ventral chaetotaxy.

FIGURES 3 – 9. Simonachorutes romeroi: 3, labium; 4, labrum; 5, chaetotaxy of Ant. III – IV; 6, postantennal organ and ocelli; 7, chaetotaxy of tibiotarsus III; 8, dens and mucro; 9, chaetotaxy of Th. V – VI.