Aculus medicager
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Ordo: Trombidiformes
Familia: Eriophyidae
Genus: Aculus
Name
Aculus medicager Xue & Sadeghi & Hong & Sinaie, 2011 sp. n. – Wikispecies link – ZooBank link – Pensoft Profile
Description
Female (n = 14, dorsal view): Body fusiform, 218 (218–233), 72 (69–72) wide; light yellow. Gnathosoma 24 (24–25), projecting obliquely downwards, pedipalp coxal seta (ep) 3 (2–3), dorsal pedipalp genual seta (d) 7 (6–7), cheliceral stylets 22 (22–23). Prodorsal shield 42 (42–43), 52 (50–52) wide, median and admedian lines absent, submedian lines incomplete, prodorsal shield with many granules at lateral; anterior shield lobe broad. Scapular tubercles near rear shield margin, 37 (37–40) apart, scapular setae (sc) 17 (17–18), projecting posteriorly. Coxigenital region with 7 (6–7) microtuberclated annuli. Coxisternal plates with few short lines, anterolateral setae on coxisternum І (1b) 4 (4–7), 14 (13–14) apart, proximal setae on coxisternum І (1a) 23 (23–28), 7 (7–8) apart, proximal setae on coxisternum ІІ (2a) 47 (45–47), 27 (25–27) apart, tubercles 1b and 1a apart 6 (5–6), tubercles 1a and 2a 11 (10–11) apart. Prosternal apodeme 6 (6–7). Legs with usual series of setae. Leg І 37 (37–40), femur 9 (9–10), basiventral femoral seta (bv) 14 (14–15); genu 5 (5–6), antaxial genual seta (l’’) 24 (24–25); tibia 8 (7–8), paraxial tibial seta (l’) 4 (4–5), located at 1/3 from dorsal base; tarsus 7 (7–8), seta ft’ 22 (22–23), seta ft’’ 27 (27–30), seta u’ 5 (5–6); tarsal empodium (em) 7 (6–7), simple, 4-rayed, tarsal solenidion (ω) 8 (8–9), slightly knobbed. Leg ІІ 34 (34–37), femur 9 (8–9), basiventral femoral seta (bv) 13 (12–13); genu 4 (3–4), antaxial genual seta (l’’) 10 (10–11); tibia 6 (5–6); tarsus 7 (7–8), seta ft’ 7 (6–7), seta ft’’ 28 (28–30), seta u’ 6 (5–6); tarsal empodium (em) 7 (6–7), simple, 4-rayed, tarsal solenidion (ω) 8 (8–10), slightly knobbed. Opisthosoma: opisthosoma dorsally with 35 (35–38) annuli, with round microtubercles at lateral, ventrally with 64 (64–68) annuli, with round microtubercles on rear annular margins. Setae c2 23 (23–24) on ventral annulus 12 (12–13), 77 (75–77) apart; setae d 45 (45–48) on ventral annulus 25 (24–25), 56 (56–58) apart; setae e 23 (20–23) on ventral annulus 39 (39–40), 25 (25–26) apart; setae f 25 (24–25) on 5th ventral annulus from rear, 21 (21–22) apart. Setae h1 3 (3–4), h2 53 (53–65). Female genitalia 14 (14–15), 23 (22–23) wide, coverflap with three short lines at base and 12 longitudinal ridges, setae 3a 17 (17–18), 17 (17–18) apart.
Male: Unknown.
Type material
Holotype, female (slide number IRAN204, marked Holotype), from Medicago sativa L. (Leguminosae), Ferdowsi University campus, Mashhad, Razavi Khorasan Province, Iran, 36.3000°N, 59.5167°E, elavation 915m, 10-VIII-2010, coll. Samira Sinaie, deposited as slide mounted specimens in the Arthropod/Mite Collection of the Department of Entomology, NJAU, Jiangsu Province, China. Paratypes, 2 females (slide number IRAN204), with the same data as holotype; 11females (slide number 204), from Medicago sativa (Leguminosae), Ferdowsi University campus, Mashhad, Razavi Khorasan Province, Iran, 36.3000°N, 59.5167°E, elavation 915m, 10-VIII-2010, coll. Samira Sinaie, deposited in the Department of Plant Protection, FUM, Iran.
Relation to host
Vagrant.
Etymology
The specific designation medicager is from the generic name of host plant, Medicago.
Differential diagnosis
This species is similar to Aculus alfalfae (Roivainen, 1950), (from Medicago sativa), but can be differentiated from the latter by prodorsal shield with submedian lines and granules (prodorsal shield smooth in Aculus alfalfae), dorsal annuli with granules at lateral (dorsal annuli smooth in Aculus alfalfae), empodium 4-rayed (empodium 6-rayed in Aculus alfalfae).
Remarks
Alfalfa (Medicago sativa L.) is native to Asia Minor. The wild types in the Caucasus and in the mountainous regions of Afghanistan, Iran and adjacent regions. Now, alfalfa is widely cultivated throughout the world as fodder plant for cattle. The new species were described from the local/native plant from Iran.
Genus Tetra Keifer, 1944
Original Description
- Xue, X; Sadeghi, H; Hong, X; Sinaie, S; 2011: Nine eriophyoid mite species from Iran (Acari, Eriophyidae) ZooKeys, 143: 23-45. doi
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