Charletonia bahaensis, Kamran, Muhammad & Alatawi, Fahad J., 2014

Kamran, Muhammad & Alatawi, Fahad J., 2014, Erythraeid mites (Prostigmata, Erythraeidae) from Saudi Arabia, description of three new species and a new record, ZooKeys 445, pp. 77-95 : 79-82

Taxon classification Animalia Prostigmata Erythraeidae

Charletonia bahaensis sp. n. Figs 14-23

Diagnosis

(n=7). fnTi 18-18-18, fD 121-123, fV 60-61, with two hypostomalae, posterior hypostomalae barbed, galeala nude, GL 157-164, fnGe 12-12-12, four setae between coxae II & III, solenidion on genu I located distally.

Description of holotype larva.

(Metric data of holotype followed by as a range of six paratypes in parenthesis).

Dorsum: Prodorsal scutum punctate entirely, with two pairs of sensillae (ASE, PSE) and three pairs of normal setae (AL, PL, PL). Posterior sensilla (PSE) longer than anterior ones (ASE), both finely barbed at distal halves. All three scutalae AL, ML and PL densely barbed and blunt ended, (Fig. 16). Dorsum with 123 (121-123) barbed setae (fD = 123 (121-123) with blunt tips, ranging in lengths from 45 (42-56). A pair of eyes located laterally on idiosoma posterolateral to scutum, 21 (21-23) across (Fig. 14).

Venter: Venter with intercoxal setae (1a) between coxae I, one pair of intercoxal setae (2a) between coxae II, four setae in the area between coxae II & III, 57 (56-57) setae present on opisthogaster behind the coxae III (fV = 61 (60-61). All ventral setae barbed with pointed tips except postero-marginal setae on venter which are blunt-ended (Fig. 15).

Gnathosoma: Subcapitulum with one pair of nude, spiniform galealae (Ga) 33 (30-34), two pairs of hypostomalae, anterior pair (aHy) nude, 16 (15-17), posterior pair (pHy) with long barbs, 45 (42-47). Chelicerae 114 (113-116), cheliceral blade 19 (18-19). Supracoxalae present, very small, peg- like. Palpfemur and genu each with one barbed seta, palptibia with three barbed setae and bifurcated claw (Fig. 17), palptarsus with one eupathidium, one solenidion, one nude and four barbed setae including long basal seta (Fig. 17A), eupathidium 25 (23-25), solenidion 7 (6-7) and long basal seta, 39 (35-40) long. Palp setal formula: 0-B-B-BBB2-4BNωζ.

Legs: Legs seven segmented with divided femora, all longer than body length. Tarsi I–III terminate in two lateral claws and claw like empodium.

Leg setal formula: Cx: 1-2-2; Tr: 1-1-1; Bfe: 4-4-2; Tfe: 5-5-5; Ge: 12+1σ+1κ - 12+ 1κ - 12; Ti: 18+2φ + 1Cp+ 1κ - 18+ 2φ -18 + 1φ; Ta: 27+ 1ω + 1ε + 1Cp + 2ζ - 26 + 1ω + 1ζ - 27 + 1ζ (Figs 18-23).

Etymology.

The specific epithet is derived from the city name “Baha” (in Saudi Arabia) where it was collected.

Type material.

Holotype and 6 paratype larvae, from blue alfalfa aphid, Acyrthosiphon kondoi Shinji ( Hemiptera : Aphididae ), infesting alfalfa plants, Medicago sativa L., Baha, Saudi Arabia, 19°59.807'N, 41°25.715'E, on 25 April, 2013, coll. M. Kamran. Holotype and 5 paratypes (P2, P3, P4, P5, P6) are deposited in the King Saud University Museum of Arthropods (KSMA) and Acarology Laboratory, Department of Plant Protection, College of Food and Agriculture Sciences, King Saud University. One paratype (P1- accession no. Acy: 14/46) has been deposited at the Agriculture Research Council, Plant Protection Research Institute, Biosystematics Division, Pretoria (ARC-PPRI), South Africa.

Remarks.

Charletonia bahaensis sp. n. belongs to the species group of genus Charletonia with four setae between coxae II & III, solenidion placed distally on genu I, fn Ge 12 –12– 12, Ti III 200-260 and two hypostomalae. This group includes 11 species: Charletonia areolata ( Trägårdh, 1908); Charletonia froggatti Oudemans, 1910; Charletonia feideri Southcott, 1966; Charletonia rageaui Southcott, 1966; Charletonia paolii Southcott, 1966; Charletonia banksi Southcott, 1966; Charletonia enghoffi Southcott, 1991; Charletonia hunanensis Zheng, 1996; Charletonia lombokensis Haitlinger, 2006; Charletonia grandpopensis Haitlinger, 2007 and Charletonia salazari Mayoral & Barranco, 2011 ( Southcott 1966, Southcott 1991, Zheng 1996, Haitlinger 2006b, 2007, Mayoral and Barranco 2011). The new species differs from Charletonia areolata by fD (121-123 vs. 97), fV (60-61 vs. 42), setae on Ti III (18 vs. 19), Ti III (231-242 vs. 259), Ti I (175-183 vs. 199), Ge I (127-135 vs. 157), Galealae (nude vs. ciliated); from Charletonia froggatti by fD (123 vs. 64), fV (60-61 vs. 37), fnTi (18 –18– 18 vs. 14 –14– 18); from Charletonia feideri by fD (121-123 vs. 86), fV (61 vs. 44), setae on Ti III (18 vs. 19), Ti I (173-184 vs. 138-159), Ge III (140-148 vs. 121), Ge I (127-135 vs. 112-125), Ta I (158-166 vs. 129-140); from Charletonia rageaui by fD (121-123 vs. 94), fV (61 vs. 54), fnTi (18 –18– 18 vs. 18 –18– 19), Ta I (158-166 vs. 142-149); from Charletonia paolii by fD (121-123 vs. 98), setae on Ti III 18 vs. 19), posterior hypostomalae (barbed vs. nude), W (114-118 vs. 98), PL (49-55 vs. 36-43), Ta I (158-166 vs. 137), galealae (nude vs. barbed), Ta III (165-177 vs. 133); from Charletonia banksi by fD (121-123 vs. 97), fV (60-61 vs. 46), setae on Ti III (18 vs. 19), Ge III (140-148 vs. 125), galealae (nude vs. barbed), leg I (741-781 vs. 725), leg II (694-716 vs. 660), leg III (869-911 vs. 790); from Charletonia enghoffi by fD (121-123 vs. 52), fV (60-61 vs. 40), setae on Ti I (18 vs. 17), posterior hypostomalae (barbed vs. nude), PSE (87-95 vs. 116-129), ASE (48-51 vs. 70-75); Charletonia hunanensis by fD (121-123 vs. 73), fV (60-61 vs. 47), setae on Ti II (18 vs. 21), Ge III (140-148 vs. 125), setae on Tfe (5 vs. 6); from Charletonia lombokensis by fD (121-123 vs. 74), fV (60-61 vs. 40), setae on Ti II (18 vs. 17), fnBfe (4 –4– 2 vs. 3 –3– 2), PW (106-113 vs. 50), ASE (48-54 vs. 22), PSE (87-95 vs. 36); from Charletonia grandpopensis by fD (121-123 vs. 60), fV (60-61 vs. 43), setae on Ti II (18 vs. 17), setae on Ti III (18 vs. 17), ASE (ciliated vs. nude), DS (42-56 vs. 68-72), Ta I (158-166 vs. 130-134), GL (155-164 vs. 96-108), galealae (nude vs. barbed); from Charletonia salazari by fD (121-123 vs. 76), fV (60-61 vs. 28), fnTi (18 –18– 18 vs. 15 –16– 16), ISD (71-78 vs. 54-63), AL (50-56 vs. 67-72), AP (48-52 vs. 68-72). In brief the new species can be differentiated from all other species of this group by having fD 123, fV 61 and fn Ti 18 –18– 18. All other species of this group have dorsal setae less than 100.