Calepitrimerus clematisis, Song, Zi-Wei, Xue, Xiao-Feng & Hong, Xiao-Yue, 2008

Song, Zi-Wei, Xue, Xiao-Feng & Hong, Xiao-Yue, 2008, Eriophyoid mite fauna (Acari: Eriophyoidea) of Gansu Province, northwestern China with descriptions of twelve new species, Zootaxa 1756, pp. 1-48 : 19-21

Calepitrimerus clematisis sp. nov.

( Fig. 5 )

Description. FEMALE: (n = 11) Body fusiform, 215 (210–235), 70 (70–72) wide, 77 (75–78) thick; light yellow. Gnathosoma 22 (20–22), projecting obliquely down, pedipalp coxal setae (ep) 3 (2–3), dorsal pedipalp genual setae (d) 7 (5–7), chelicerae 20 (19–20). Prodorsal shield 51 (49–52), 61 (60–61) wide; with broad and round frontal lobe; prodorsal shield design with incomplete median line, complete admedian and submedian lines, median line connected with sinuous admedian lines by “V” shape line at 2/3 median line from anterior, admedian lines connected with sinuous submedian lines by two transverse lines forming network, and submedian lines ending with the scapular tubercles. Scapular tubercles ahead of rear margin, 22 (20–22) apart, scapular setae (sc) 13 (13–14) projecting ahead and centrad. Coxal area with short and thick lines; anterolateral setae on coxisternum I (1b) 9 (8–10), proximal setae on coxisternum I (1a) 28 (25–30), proximal setae on coxisternum II (2a) 52 (50–52). Prosternal apodeme present. Legs: Leg I 42 (41–42), femur 11 (10–11), basiventral femoral seta (bv) 13 (11–13); genu 5 (5–6), antaxial genual seta (l'') 25 (23–26); tibia 9 (9–10), paraxial tibial seta (l') 6 (5–6), seta located 1/3 from dorsal base; tarsus 7 (6–7), tarsal seta (u') 5 (4–5), tarsal empodium simple, 4-rayed, tarsal solenidion knobbed. Leg II 39 (38–39), femur 11 (10–11), basiventral femoral seta (bv) 10 (10–12); genu 5 (4–5), antaxial genual seta (l'') 9 (8–10); tibia 6 (6–7); tarsus 7 (6–7), tarsal seta (u') 5 (4–5), tarsal empodium simple, 4-rayed, tarsal solenidion knobbed. Opisthosoma: dorsal opisthosoma with 37 (37–42) annuli, smooth except with elliptical microtubercles on a middorsal ridge and two lateral ridges, middorsal ridge ending with a furrow; ventrally with 70 (66–71) microtuberculate annuli. Setae c2 20 (15–20) on ventral annulus 11 (10–11); setae d 32 (27–32) on ventral annulus 23 (23–25); setae e 15 (14– 15) on ventral annulus 41 (38–41); setae f 26 (25–26) on 5th ventral annulus from rear. Setae h1 5 (4–5). Female genitalia 12 (12–13), 21 (21–22) wide, coverflap with 8–10 longitudinal ridges, proximal setae on coxisternum III (3a) 18 (17–18).

MALE: (n = 10) Body fusiform, 183 (175–185), 65 (61–70) wide, 70 (68–72) thick; light yellow. Gnathosoma 20 (18–20), projecting obliquely down, pedipalp coxal setae (ep) 3 (3–4), dorsal pedipalp genual setae (d) 10 (8–10), chelicerae 18 (16–19). Prodorsal shield 47 (45–50), 57 (55–58) wide; with broad frontal lobe. Scapular tubercles ahead of rear margin, 19 (18–21) apart, scapular setae (sc) 10 (10–12) projecting ahead and centrad. Coxal area with short lines and granules; anterolateral setae on coxisternum I (1b) 10 (9–10), proximal setae on coxisternum I (1a) 25 (25–28), proximal setae on coxisternum II (2a) 50 (50–51). Prosternal apodeme present. Legs: Leg I 40 (40–42), femur 10 (10–11), basiventral femoral seta (bv) 14 (12–15); genu 5 (5–6), antaxial genual seta (l'') 25 (25–28); tibia 9 (9–10), paraxial tibial seta (l') 7 (5–7), seta located 1/3 from dorsal base; tarsus 6 (6–7), tarsal seta (u') 4 (4–5), tarsal empodium simple, 4-rayed, tarsal solenidion knobbed. Leg II 37 (36–39), femur 10 (9–10), basiventral femoral seta (bv) 12 (10–12); genu 5 (4–5), antaxial genual seta (l'') 10 (9–10); tibia 7 (6–7); tarsus 6 (6–7), tarsal seta (u') 4 (4–5), tarsal empodium simple, 4- rayed, tarsal solenidion knobbed. Opisthosoma: dorsal opisthosoma with 38 (35–40) annuli, with elliptical microtubercles, ventrally with 63 (60–65) microtuberculate annuli. Setae c2 18 (18–20) on ventral annulus 8 (8–10); setae d 30 (29–32) on ventral annulus 20 (18–20); setae e 15 (15–17) on ventral annulus 38 (35–38); setae f 30 (38–30) on 5th ventral annulus from rear. Setae h1 3 (3–4). Male genitalia 4 (3–4), 22 (21–22) wide, proximal setae on coxisternum III (3a) 14 (12–15).

Types. Holotype, female, from Clematis sp. ( Ranunculaceae ), Guan’e Gou, Dangchang County, Gansu Province, China, 33°57'39N, 104°19'45E, September 12, 2005, collected by Zi-Wei Song and Xiao-Feng Xue. Paratypes, 10 females and 10 males, with the same date as holotype.

Relation to host. Mites are vagrant on the undersurface of leaves, causing no apparent damage.

Etymology. The specific designation clematisis is from the generic name of the host plant, Clematis .

Remarks. This species is similar to Calepitrimerus rosarum Lin & Kuang, 2001 b, but can be differentiated by dorsal annuli with elliptical microtubercles on dorsal ridges (dorsal annuli smooth in C. rosarum ), empodium 4-rayed, tarsal solenidion knobbed (empodium 5-rayed, tarsal solenidion tapered in C. rosarum ), middorsal ridges long (middorsal ridges short in C. rosarum ).

Figures

FIGURE 5. Calepitrimerus clematisis sp. nov. A, dorsal view of female; B, coxae and female genitalia; C, legs I and II; D, lateral aspect of female; E, tarsal empodium; F, male genitalia.