Cecidophyes hirsutes, Xue & Song & Hong, 2011

Xue, Xiao-Feng, Song, Zi-Wei & Hong, Xiao-Yue, 2011, Three new species of Cecidophyinae (Acari: Eriophyidae) from China, Journal of Natural History 45 (19 - 20), pp. 1199-1211 : 1204-1207

Cecidophyes hirsutes sp. nov.

( Figures 4 , 5 )

Female

Body fusiform, 232 (207–240), 78 (76–80) wide, 79 (78–80) thick; light yellow. Gnathosoma 18 (17–18), projecting obliquely down, pedipalp coxal seta (ep) 3 (2–3), dorsal pedipalp genual seta (d) 6 (5–6), cheliceral stylets 15 (15–16). Prodorsal shield 44 (41–46), 62 (60–63) wide; anterior shield lobe small; median, admedian and submedian lines complete, median and admedian lines connected at anterior third, centre and basal third by transverse lines and forming four “cells”, admedian and submedian lines with granules. Scapular tubercles and setae (sc) absent. Coxal plates with short lines, anterolateral setae on coxisternum I (1b) 7 (7–8), 13 (13–14) apart, proximal setae on coxisternum I (1a) 16 (14–17), 15 (14–15) apart, proximal setae on coxisternum II (2a) 36 (33–38), 28 (27–28) apart. Prosternal apodeme 5 (5–6). Legs with usual series of setae. Leg I 33 (32–34), femur 8 (8–9), basiventral femoral seta (bv) 14 (13–15); genu 5 (5–6), antaxial genual seta (l ́́) 32 (27–35); tibia 7 (7–8), paraxial tibial seta (ĺ) 9 (8–10), located one-third from dorsal base; tarsus 6 (5–6), paraxial, fastigial, tarsal seta ft́ 17 (16–17), antaxial, fastigial, tarsal seta ft ́́ 22 (22–23), paraxial, unguinal, tarsal seta ú 5 (4–5); tarsal empodium (em) 6 (6–7), simple, four-rayed, tarsal solenidion (ω) 7 (7–8), knobbed. Leg II 30 (28–31), femur 7 (7–8), basiventral femoral seta (bv) 14 (13–16); genu 4 (4–5), antaxial genual seta (l ́́) 7 (7–8); tibia 6 (5–6); tarsus 6 (5–6), paraxial, fastigial, tarsal seta ft́ 5 (5–6), antaxial, fastigial, tarsal seta ft ́́ 21 (20–21), paraxial, unguinal, tarsal seta ú 4 (4–5); tarsal empodium (em) 6 (5–6), simple, four-rayed, tarsal solenidion (ω) 7 (6–7), knobbed. Opisthosoma dorsally with 43 (41–45) annuli, with elliptical microtubercles on rear annular margin, ventrally with 62 (59–65) annuli, with spiny microtubercles on rear annular margin. Setae c2 23 (21–26) on ventral annulus 9 (9–10), 75 (74–75) apart; setae d 58 (56–62) on ventral annulus 23 (23–24), 57 (57–60) apart; setae e 12 (12–13) on ventral annulus 38 (38–40), 37 (36–38) apart, setae f 23 (23–26) on seventh ventral annulus from rear, 25 (25–26) apart. Setae h1 absent, h2 70 (70–76). Female genitalia 17 (15–18), 26 (25–26) wide, with two rows of ridges, the upper one with 19–23 longitudinal ridges, the other one with 15–17 longitudinal ridges, proximal setae on coxisternum III (3a) 14 (13–15), 19 (18–20) apart.

Male

Unknown.

Type material

Holotype, female (slide number NJAUAcariEri219, marked Holotype), from Cardamine hirsute L. (Cruciferae), Louguantai , Zhouzhi County, Shaanxi Province, P. R. China, 34 ◦ 03́54 ́́ N, 108 ◦ 19́22́́ E, elevation 500 m, 31 August 2004, coll. Xiao-Feng Xue and Zi-Wei Song. Paratypes, seven females (slide number NJAUAcariEri343), with the same data as holotype.

Relation to host

Vagrant on leaf surface. No damage to the host was observed.

Etymology

The specific designation hirsutes is from the species name of host plant, hirsute .

Differential diagnosis

This species is similar to C. collegiatus Keifer, 1961 (from Acer platanoides ), but can be differentiated from the latter by median line on prodorsal shield present (median line absent in C. collegiatus ), empodium four-rayed (empodium five-rayed in C. collegiatus ).

Tribe COLOMERINI Newkirk and Keifer, 1975

Figures

Figure 4. Cecidophyes hirsutes sp. nov. D, dorsal view of female; LO, lateral microtubercles; L1, leg I; L2, leg II.

Figure 5. Cecidophyes hirsutes sp. nov. LM, lateral view of female; CG, coxae and female genitalia; em, empodium.