Aegyptobia Sayed, 1950

Alatawi, Fahad Jaber, Received, Muhammad Kamran & Online, Published, 2015, Two new flat mite species of Aegyptobia and Pentamerismus (Acari: Tenuipalpidae) from Saudi Arabia, Turkish Journal of Zoology 39 (2), pp. 244-250 : 245-247

publication ID	https://doi.org/ 10.3906/zoo-1311-12
persistent identifier	https://treatment.plazi.org/id/B95687C7-FFFD-FFE2-FFBB-FF674783FF31
treatment provided by	Felipe
scientific name	Aegyptobia Sayed
status

Treatment

Genus Aegyptobia Sayed View in CoL

Diagnosis of the genus is based on Seeman and Beard, 2011.

Aegyptobia arabica sp. nov.

Diagnosis. Adult female: Dorsal body setae broadly spatulate, smooth, anterior margin of prodorsum deeply notched, propodosoma entirely with elongate reticulate patterns, hysterosoma medially with elongate reticulate elements, laterally with polygonal and more even reticulations, a transverse line between hysterosomal setae d1 and e1; ventral idiosoma smooth between coxae I, coarse transverse striae between intercoxal setae 1a and 3a and posteriad 4a, area between setae 3a and 4a smooth, genital flap with few punctations. Setae on palp segments (from tarsus to trochanter): 3(1s + 2e) – 2 – 0 – 1 – 0, femora I–III and genua I–II with broad spatulate dorsal setae. Trochanters 1 – 1 – 2 – 1; femora 4 – 4 – 2 – 1; genua I – III 2 – 2 – 1 – 0 (setae l ′′ absent), tarsi 9(1) – 9(1) – 5 – 5 (setae tc ′′ present); tarsal claws uncinate.

Description ( Figures 1 – 7 View Figure 1 View Figures 2 and 3 View Figures 4–7 ):

Female (Holotype): Measurements of 5 paratypes in parentheses. Color in life red. Idiosoma oval in shape, body measured from v2 to h1 283 (274 – 285); (including gnathosoma) 346 (342 – 349); width 170 (169 – 176) near setae sc2; length of legs I – IV, 143 (138 – 144), leg II 126 (122 – 128), leg III 114 (110 – 114), leg IV 119 (118 – 123) .

Dorsum ( Figure 1 View Figure 1 ): Anterior margin of prodorsum deeply notched. Propodosomal shield entirely with elongate reticulate patterns, hysterosoma medially with elongate reticulate elements that become polygonal and more even laterally, a dorsal transverse line between setae d1 and e1 ( Figure 1 View Figure 1 ). Area of sejugal suture with transverse striations. Dorsal setae broadly spatulate, smooth. Opisthosomal pores present between setae d2 and d3. Prodorsal setae v2 0.38 as long as distance between their bases. Lengths of dorsal setae: v2 22 (21 – 22), sc1 24 (23 – 24), sc2 21 (20 – 22), c1 27 (26 – 28), c 2 22 (22 – 23), c3 20 (20), d1 20 (20), d2 28 (26 – 28), d3 23 (21 – 23), e1 20 (20 – 21), e2 21 (19 – 21), e3 23 (22 – 24), f2 21 (21 – 22), f3 20 (19 – 20), h1 20 (19 – 20), h2 20 (20); distances between dorsal setae: v2–v2 57 (55 – 59), v2–sc1 39 (38 – 42), sc1–sc1 108 (105 – 110), sc2–sc2 124 (120 – 125), sc1–sc2 26 (24 – 26), c1–c1 50 (48 – 53), c1–c2 31 (29 – 31), c2–c3 23 (22 – 23), c2– c2 112 (110 – 115), c3–c3 157 (150-160), c1–d1 37 (34-38), c2–d2 26 (25 – 27), c3–d3 47 (47 – 50), d1–d1 46 (43 – 47), d1–d2 28 (25 – 28), d2–d3 27 (27 – 29), d2–d2 99 (97 – 105), d3–d3 140 (135 – 140), d1– e1 53 (49 – 55), e1– e1 28 (25 – 28), e1– e2 43 (39 – 47), e2–e2 117 (115 – 120), e2– e3 22 (21 – 22), e3–e3 102 (100 – 105), e1– e3 43 (40 – 43), f2–f2 75 (72 – 75), f3–f3 93 (90 – 96), f3–f2 17 (16 – 17), f2– e1 22 (21 – 23), f2– e 3 23 (21 – 23), f3–h2 21 (20 – 21), h1–h1 30 (29 – 30), h1–h2 19 (18 – 20), h2–h2 69 (67 – 70), e1–h1 56 (55 – 57).

Venter ( Figure 2 View Figures 2 and 3 ): Intercoxal area anterior to setae 1a smooth, area between setae 1a and 3a with coarse transverse striations, between 3a and 4a with some longitudinal striations laterally, smooth medially, and area posteriad setae 4a with coarse transverse striations. Length of ventral setae 1a 82 (78 – 85), 3a 16 (15 – 17), 4a 21 (20 – 22), 1b 40 (38 – 40), 1c 14 (13 – 14), 2b 17 (16 – 17), 2c 21 (20 – 21), 3b 13 (11 – 13), 4b 13 (12 – 13). Pregenital area with few faint transverse striations, ag 16 (16 – 17), ag–ag 20 (19 – 21). Genital flap with few punctations, 2 pairs of genital setae, g 1 = g 2 = 14, distance between genital setae g1–g1 15 (14 – 15), g2–g2 25 (23 – 25), g1–g2 10 (9 – 10). Anal setae (ps 1–3) 3 pairs, all 10 – 11, distance between genital setae, ps 1 –ps 1 6 – 7, ps 2 –ps 2 8 – 9, ps 3 –ps 3 11 – 12. All ventral setae simple and smooth except genital and anal setae, which are simple and finely serrated ( Figure 2 View Figures 2 and 3 ).

Gnathosoma (Figure 3): Gnathosoma extending to anterior part of tibia I; palp-tarsus with 1 solenidion and 2 eupathidia, palp tibia with 2 setae, palp genu without seta and palp femur with 1 simple dorsal seta (Figure 3). Subcapitulum with setae m 11 (10 – 11), m–m 13 (12 – 13).

Legs ( Figures 4 – 7 View Figures 4–7 ): Leg setal counts as follows: coxae 2 – 2 – 1 – 1; trochanters 1 – 1 – 2 – 1; femora 4 – 4 – 2 – 1; genua 2 – 2 – 1 – 0; tibiae 4 – 4 – 3 – 3; tarsi 9(1) – 9(1) – 5 – 5. Solenidia on tarsi I and II 9 – 10 long, rod-like. Dorsal setae on femur

ALATAWI and KAMRAN / Turk J Zool

I, II, III and genua I, II spatulate, similar to dorsal body setae. Tarsal claws uncinate and empodium pad-like.

Male and immature stages. Unknown.

Type material. Holotype female and 5 female paratypes ex wild plant, Hammada sp. ( Amaranthaceae ), Saudi Arabia: Salbookh road, near Dariah, Riyadh, 24°50.57′N, 46°33.149′E, 21 September 2012, coll. M. Kamran.

Etymology: Name of new species is proposed on the name of the region, “Arab”.

Remarks: This new species belongs to the tragardhi species group and is similar to Aegyptobia abuzabiensis Meyer & Van Dis, 1993 in leg setation ( Seeman and Beard, 2011), the form of the dorsal setae, and general ornamentation. However, it differs from A. abuzabiensis by the presence of a deep notch on the anterior margin of the prodorsal shield (very shallowly emarginated in the latter species), the ventral shield (transverse vs. longitudinal striations), and the dorsal shield reticulation being compact in the new species versus large cells in A. abuzabiensis . The new species can be separated from other closely related species A. baptus ( Pritchard and Baker, 1952) and A. neobaptus Meyer, 1979 by differences in leg setation, and from A. haplopappus Baker and Tuttle, 1972 by the propodosoma with reticulate elements medially in the new species whereas striated in A. haplopappus , and also the difference in leg chaetotaxy.

Aegyptobia tragardhi Sayed

Aegyptobia tragardhi Sayed, 1950: 1018 View in CoL ; Pritchard and Baker, 1958: 181; Meyer, 1979: 123; Khanjani et al., 2012: 43 – 45 View Cited Treatment .

Pentamerismus tragardhi Baker and Pritchard, 1953: 355 .

Aegyptobia ueckermanni Khosrowshahi and Arbabi, 1997: 8 – 9 View in CoL .

New record.

Twelve females ex Thuja occidentalis L. ( Cupressaceae ), Baha, Saudi Arabia, 20°6.695′N, 41°26.745′E, 24 April 2013, coll. M. Kamran.

Genus Pentamerismus McGregor

Diagnosis of the genus is based on Beard et al., 2014.

ALATAWI and KAMRAN / Turk J Zool