Pseudachorutes kurdistanicus, Shayanmehr & Kaprus’ & Ghobari & Yahyapour & Samani & Lafooraki & Sepanlou, 2022

Shayanmehr, Masoumeh, Kaprus’, Ihor J., Ghobari, Hamed, Yahyapour, Eliye, Samani, Kiumars Mohammadi, Lafooraki, Elhamyoosefi & Sepanlou, Mehdi Ghajar, 2022, New Pseudachorutes species Tullberg, 1871 (Collembola, Neanuridae) with a key to Iranian species of the genus, Zootaxa 5150 (3), pp. 443-450 : 446-449

Pseudachorutes kurdistanicus Kaprus’, Shayanmehr & Ghobari sp. nov.

Figs 12–19

Type material. Holotype: female (on slide), Iran, Kurdistan Province, Marivan-Pirsafa , oak forest, soil and leaf litter under oak trees, 1335 m alt., 15.V.2019, leg. Hamed Ghobari ). Paratypes: 2 females (on slide), the same data as holotype. The material is preserved in the collection of SNHML .

Description. Body length without antennae 2.2–2.6 mm. Colour in alcohol bluish-grey, ocular plate bluishblack. Tegumental granulation strong. Antennae as long as head. Ant. I with 7 chaetae, Ant. II with 11 chaetae and Ant. III with 18 ordinary chaetae. Ant. III and IV fused dorsally, ventral separation well marked. Sensory organ of Ant. III consisting of two small, globular internal sensilla, two subcylindrical guard sensilla (ventral sensillum is 1.3 times as long as dorsal one) and two guard chaetae between them; ventral microsensillum present. Ant. IV with about 40 ordinary chaetae, 7–8 short and truncate chaetae in ventro-apical part and 6 distinct subcylindrical sensilla; dorsoexternal microsensillum and subapical organite present; apical vesicle trilobed ( Figs 13, 14 ).

PAO round with 11–12 vesicles, ca. as long as ocellus B ( Fig. 16 ). 8+8 eyes. Buccal cone relatively short as 1.2 Ant. I lengths. Mandibles invisible. Styliform maxilla with two lamellae, one of them with tiny apical hook (as on Fig. 9 ). Labral formula: 4/2,3,4 (as on Fig. 5a ). Labium without organites x and papillate chaetae L, with 11+11 ordinary chaetae ( Fig. 15 ). Perilabial area with 4+4 subequal chaetae.

Dorsal chaetotaxy as in Fig. 12 with very short chaetae and with short sensory S-chaetae. Formula per half tergum as: 022/11111. Microsensilla ms on Tht. II and III present. Head with unpaired chaeta d 1 and without chaeta a 0. Tht. I with 3+3 chaetae. Tht. II and III with 10+10 chaetae (a 1, a 4, a 6, m 5, m 6, p 1, p 2, p 4, p 5 and p 6 chaetae present), S-chaeta = p 4 and m 6. Abdt. I–III with 8+8 chaetae (a 1, a 4, a 6, p 1, p 2, p 4, p 5 and p 6 present), S-chaeta = p 5. Abdt. IV with 9(10)+9 chaetae (a 1, a 3, a 5, a 6, [m 6±], p 1, p 2, p 4, p 5 and p 6 present), S-chaeta = p 5. Abdt. V with 5+5 chaetae (a 1, a 3, p 1, p 3, and p 4 chaetae present), S-chaeta s = p 3.

Ventral chaetotaxy on Abds. I–VI as in Fig. 19 . Thoracic sterna without chaetae, VT with 3+3 chaetae. Abds. I without chaetae, Abds. II with 4+4 chaetae, Abds. III with 6+6 chaetae.

* 1—simple, 2s—slightly bilobed, 3—trilobed. ** Tht. II and III with 10+10 chaetae each.

Dens with six chaetae ( Fig. 18 ). Mucro boat-shaped, with curved ventral edge and one broad lateral lamella. Manubrium with 12+12 chaetae. Tenaculum with 3+3 teeth. Each anal valve with two chaetae hr ( Fig. 19 ).

Tibiotarsi of legs I, II and III with 18, 18 and 17 chaetae, respectively, chaetae M and B7 absent on tibiotarsus III ( Fig. 17 ). Femora I, II and III with 13, 12 and 11 chaetae, trochanters I, II and III with 6, 6 and 6 chaetae, coxae I, II and III with 3, 6 and 7 chaetae, subcoxae 2 of legs I, II and III with 0, 2 and 2 chaetae, subcoxae 1 of legs I, II and III with 1, 2 and 2 chaetae, respectively. Claw with a strong tooth near middle of inner edge and without lateral teeth in basal part ( Fig. 17 ). Empodial appendage absent.

Etymology. The name of the new species refers to the Kurdistan Province ( Iran), the place where the type specimens were collected.

Discussion. The same type of chaetotaxy of head (present unpaired chaeta d 1 and absent a 0 chaeta), Tht. I (3+3 chaetae), Tht. II-III (10+10 chaetae each, a 2 chaeta absent), Abdt. I-III (8+8 chaetae each, m row chaetae absent), Abdt. IV (9+9(10) chaetae, [m 6±]), Abdt. V (5+5 chaetae, a 2 and p 2 chaetae absent) and furca (six chaetae), the absence of lateral teeth on claws indicate a close relationship between P. kurdistanicus sp. nov., P. vasylii Kaprus’ & Weiner, 2009 and P. laricis Arbea & Jordana, 1989 . These species differ distinctly in number of vesicles in PAO, shape of apical vesicle on Ant. IV, details of labium chaetotaxy, labral formula of chaetae, number of chaetae on VT and tibiotarsi of legs I-III ( Table 1 ).

Figures

FIGURES 12–19. Pseudachorutes kurdistanicus sp. nov. 12, dorsal chaetotaxy of body; 13, Ant. III and IV dorsally; 14, Ant. III and IV ventrally; 15, labial chaetotaxy; 16, PAO and eyes; 17, distal part of leg III; 18, furca; 19, chaetotaxy of Abds. I–VI.

FIGURES 1–11. Pseudachorutes hyrcanicus sp. nov. 1, dorsal chaetotaxy of body; 2, central area of head between d3 and d5 chaetae; 3, Ant. III and IV ventrally; 4, Ant. III and IV dorsally; 5a, chaetotaxy of labrum; 5b, labial chaetotaxy; 6, PAO and eyes; 7, distal part of leg III; 8, mandible; 9, maxilla; 10, furca; 11, chaetotaxy of Abds. II–VI.

Tables

TABLE 1. Main diagnostic characters of related Pseudachorutes species

Species	Characters Vesicles number in PAO	Labral formula chaetae	Organites x / papillate setae L on labium	Teeth number at mandible	Apical vesicle *	Inner / lateral teeth on claw	Tht. I	Abdt. I – III Chaetae Abdt. IV number**			VT	Abds. II	Abds. III		a2 / p 2 chaetae on Abdt. V	Chaetae number on tibiotarsi of legs, II, III
P. dubius Krausbauer, 1898		14–20	4/2,3,4	– / –	2	3	+ / +	4+4	8+8	11+11		3+3	3+3	6–7+6–7		– / +	18,18,17
P. hyrcanicus sp. nov.		15–19	4/2,3,4	– / –	4	3	+ / –	3+3	9+9	11+11		3+3	4+4	7–8+7–8		+ / +	18,18,17
P. kurdistanicus sp. nov.		11–12	4/2,3,4	– / –	?	3	+ / –	3+3	8+8	9+9 (10)		3+3	4+4	6+6		–/ –	18,18,17
P. laricis Arbea & Jordana,1989 P. vasylii Kaprus’ & Weiner, 2009		7–9 4–6	2/2,3,3,4 2/3,3,4	– / – + / +	2 4	1 1, 2s	– / – + / –	3+3 3+3	8+8 8+8	9+9 9+9		4+4 4+4	? 4+4	? 6–7+6–7		–/ – –/ –	19,19,18 19,19,18
P. vitalii Kaprus’ & Weiner, 2009		17–22	4/2,3,4	– / –	2	3	+ / +	3+3	9+9	14 (15)+14		3+3	3+3	6–7+6–7		+ / +	18,18,17