Abrolophus hajiqanbari, Noei, 2022

Noei, Javad, 2022, A new species of larval Abrolophus (Trombidiformes: Erythraeidae) from Iran with a key to species without a comb-like seta on the palptarsus, Persian Journal of Acarology 11 (2), pp. 225-236 : 226-231

Abrolophus hajiqanbari sp. nov. ( Figs. 1–11 )

http://zoobank.org/ urn:lsid:zoobank.org:act:2320252F-D136-466C-844F-95D12F6FDD5B

Diagnosis

Without a comb-like seta on the palptarsus, palpal femur without projection, Palpal tibial claw trifurcate (without a deep incision); PL scutalae located in the middle of ISD; AP 31–40; Ti III 107– 120.

Description (n = 9)

Dorsum ( Figs. 1, 2 ) – Dorsum of idiosoma with 44–47 barbed setae of which three pairs are around the scutum (two pairs lateral to scutum and anterior to eyes, and one pair between eyes and scutum). Scutum elongate, punctate, with two pairs of sensilla (ASens and PSens) and two pairs of normal setae (AL and PL). PSens longer than ASens, both barbed at distal two-third. AL longer than PL, both barbed. PL scutalae located in the middle of ISD. One eye (diameter 17–23) on each side of scutum posterolaterally.

is an abnormality); 4. Ventral view of palpal tarsus; 5. Dorsal view (left) and ventral view of gnathosoma (right).

Venter ( Fig. 3 ) – Idiosoma ventrally with five pairs of sternal setae (1a, 2a 1, 2a 2, 3a 1, 3a 2) (1a arising from a punctate area attached to the coxae I) and four barbed setae between coxae I and II; 11–13 setae between coxae II and III (excluding 2a 1, 2a 2, 3a 1 and 3a 2), a punctate area is attached to the coxae II; 18–21 ventral setae behind coxae III, all barbed and pointed. Each leg coxa with one seta. A peg-like supracoxal seta (elc I) present on coxa I, 5 long. NDV = 76–80 ( Table 1).

Gnathosoma ( Figs. 4, 5 ) – Cheliceral bases punctate on dorsal surface, cheliceral base 87–97 long; cheliceral blade slightly curved, 15–17 long, without teeth. Subcapitulum with a barbed galealae (cs), two anterior hypostomalae, (as 1 and as 2, nude and barbed, respectively), and a barbed posterior hypostomalae (bs); palp femur 45–52 long, with one dorsal and one ventral seta, both barbed and palp genu 20–25 long, with two dorsal and one ventral seta, all barbed. Palp tibia 15–17 long, with three setae [two barbed, and one nude conical seta (i.e. thick accessory claw)]; palpal tibial claw trifurcate (without deeply incision) 17–19; palp tarsus 6–10 with six nude setae, one solenidion and one eupathidium; fPp = 0-BB-BBB-BBN 3 -6Nωζ. Palpal supracoxal setae (elc P) peg-like, 5 long.

Legs ( Figs. 6–11 ) – Leg segmentation formula 7-7-7. Leg setal formula: Leg I: Ta - 1ω, 1ɛ, 2 , 1 z, 25n (24n in one paratype, ARS-20210829-3b; 26n in one side of symmetry axis in one specimen, ARS-20210829-3f); Ti - 2φ (1φ in the left side in one specimen, ARS-20210829-3d, also in the right side one solenidion placed in proximal half of tibia), 1 , 13n; Ge - 1 , 1 , 11n; TFe - 8n; BFe - 4n; Tr - 2n; Cx - 1n (without setae in the holotype in the left side, ARS-20210829-3a) ( Figs. 2 , 6, 7 ). Leg II: Ta - 1ω, 2 , 1 z, 20n (21n in one side of symmetry axis in one specimen, ARS-20210829-3d; 19n in one side of symmetry axis in one specimen, ARS-20210829-3h; 18/19n in one specimen, ARS- 20210829-3i); Ti - 2φ, 13n; Ge - 1 , 1 , 9n (10n in one side of symmetry axis in one specimen, ARS- 20210829-3b); TFe - 5n (6n in one side of symmetry axis in one specimen, ARS-20210829-3c); BFe - 4n; Tr - 2n; Cx - 1n ( Figs. 2 , 8, 9 ). Leg III: Ta - 1 , 19–20n (21n in one side of symmetry axis in two specimens, ARS-20210829-3c, 3d); Ti - 1φ, 13n (12n in one side of symmetry axis in one specimen, ARS-20210829-3d); Ge - 1 , 9n; TFe - 5n (6n in one side of symmetry axis in one specimen, ARS-20210829-3b); BFe - 4n; Tr - 2n; Cx - 1n ( Figs. 2 , 10, 11 ). Each leg tarsus with lateral falciform claws and a claw-like empodium .

Metric data are given in Table 1.

Etymology

The species is named in memory of the Late Dr. Hamidreza Hajiqanbar (subject editor of Persian Journal of Acarology) for his great contributions to the taxonomy and systematics of Heterostigmatic mites.

Type material

The holotype (ARS-20210829-3a) and seven paratype larvae (ARS-20210829-3b, c, e, f, g, h, i) were collected from soil and litter, IRAN: South Khorasan province, Birjand city, Chahkand village , 32° 49.55′ N, 59° 09.37′ E, 1716 m a.s.l., 31 May 2019, and one paratype larva (ARS-20210829-3d) same data as holotype, except Chahardeh village , 32° 48.52′ N, 59° 14.16′ E, 1658 m a.s.l., 21 May

2019, coll. Javad Noei. Type deposition

The holotype larva (ARS-20210829-3a) and four paratype larvae (ARS-20210829-3b–3e) are deposited in the Acarological Collection , Jalal Afshar Zoological Museum , Department of Plant Protection , Faculty of Agriculture , University of Tehran, Karaj, Iran , and four paratype larvae (ARS- 20210829-3f–3i) are deposited in the Acarological Collection , Acarological Society of Iran , Department of Plant Protection , Faculty of Agriculture, University of Tehran, Karaj, Iran ,

Remarks

The new species belongs to the species group of Abrolophus without a comb-like seta on palptarsus. Abrolophus hajiqanbari sp. nov. is most similar to A. norvegicus and A. marianopolicus in this species group based on the identification keys. The new species differs from A. norvegicus in its shorter W (42–51 vs. 68–84), AW (36–41 vs. 42–57), PW (36–45 vs. 62–80), DS max (52–60 vs. 66), in the longer AL (41–55 vs. 25–40), DS min (30–40 vs. 28), Leg I (429–479 vs. 333–418), and palpal tibial claw (trifurcate vs. bifurcate) and from A. marianopolicus in the shorter W (42–51 vs. 60–69), PW (36–45 vs. 53–65), in the longer ISD (50–62 vs. 44–50), AP (31–40 vs. 20–29), AL (41– 55 vs. 21–33), PL (40–45 vs. 29–37), ASens (35–41 vs. 15–23), PSens (55–67 vs. 40–56), GL (120– 135 vs. 94–106), cs (35–40 vs. 14–19), IP (1297–1421 vs. 1047–1169), Palpal tibial claw (trifurcate vs. bifid), number of normal setae on Ta I (25 vs. 17), Ta II (20 vs. 17), Ta III (19–20 vs. 15).

Figures

Figures 1–2. Abrolophus hajiqanbari sp. nov. (larva) – 1. Dorsal view of idiosoma; 2. Scutum.

Figure 3–5. Abrolophus hajiqanbari sp. nov. (larva) – 3.Ventral view of idiosoma (without seta 1b in the left side, which

Figures 6–9. Abrolophus hajiqanbari sp. nov. (larva) – 6. Tr–Ge I; 7. Ti–Ta I; 8. Tr–Ge II; 9. Ti–Ta II.

Figures 10–11. Abrolophus hajiqanbari sp. nov. (larva) – 10. Tr–Ge III; 11. Ti–Ta III.