Diptacus luanchuanensis, Xue & Song & Hong, 2006

Xue, Xiao-Feng, Song, Zi-Wei & Hong, Xiao-Yue, 2006, Four new species of Diptilomiopinae from China (Acari: Eriophyoidea: Diptilomiopidae), Zootaxa 1160, pp. 57-68 : 60-62

Diptacus luanchuanensis sp. nov. ( Fig. 2 )

Description

FEMALE (n = 5). Body fusiform, 308 (305–310) long, 93 (91–95) wide, 101 (98–102) thick; light yellow in color. Gnathosoma 65 (64–65) long, projecting downwards. Prodorsal shield 40 (39–41) long, 75 (73–77) wide; median, admedian and submedian lines present and connected by a transverse line at basal 2/3. Dorsal tubercles ahead of rear margin, 22 (21–23) apart, scapular setae (sc) 4 (4–5) long, projecting centered. Sternal line present. Coxal area with short lines; anterolateral setae on coxisternum I (1b) 16 (15–18) long, proximal setae on coxisternum I (1a) 30 (28–33) long, proximal setae on coxisternum II (2a) 55 (51–59) long. Legs I 51 (50–53) long, femur 14 (13–15) long, basiventral femoral setae (bv) absent; genu 7 (7–8) long, antaxial genual setae (l’’) 50 (48–51) long; tibia 17 (16–17) long, paraxial tibial setae (l’) 10 (8–11) long, setae located 2/3 from dorsal base; tarsus 9 (9–10) long; tarsal empodium divided, each 3­rayed, tarsal solenidion knobbed. Legs II 48 (47–49) long, femur 15 (13–16) long, basiventral femoral setae (bv) absent; genu 6 (5–6) long, antaxial genual setae (l’’) 14 (13–15) long; tibia 15 (15–16) long; tarsus 9 (8–9) long; tarsal empodium divided, each 3­rayed, tarsal solenidion knobbed. Dorsal opisthosoma with 49 (48–51) annuli, with short­striped microtubercles on rear annular margins, ventrally with 75 (72–78) microtuberculate annuli. Setae c2 38 (35–40) long, on ventral annulus 18 (17–18); setae d 65 (58–69) long, on ventral annulus 33 (32–35); setae e 58 (55–61) long, on ventral annulus 52 (51–54), setae f 47 (45–49) long, on 10th ventral annulus from rear. Setae h1 minute. Female genitalia 22 (21–22) long, 30 (29–31) wide, coverflap smooth, proximal setae on coxisternum III (3a) 10 (8–11) long.

MALE (n = 3). 290 (287–293) long, 95 (93–96) wide; genitalia 7 (7–8) long, 25 (24–26) wide, proximal setae on coxisternum III (3a) 7 (6–9) long.

Types

Holotype, female, north China: Henan Province, Luanchuan county, Longyuwan , 33°42.53’ N, 111°45.62’E. July 21, 2004, from Carpinus turczaninowii Hance ( Betulaceae) , coll. Xue , Xiao­Feng . Paratypes, 4 females and 3 males, with the same data as holotype.

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

Etymology Derived from the locality Luanchuan county, where the mite was collected.

Remarks

This species is similar to Diptacus pseudocerasis Kuang & Hong, 1990a , but can be differentiated by coxal area with short lines (smooth in D. pseudocerasis ), tarsal empodium divided, each 3­rayed (5­rayed in D. pseudocerasis ), setae h1 present (absent in D. pseudocerasis ).

Figures

FIGURE 2. Diptacus luanchuanensis sp. nov. A, dorsal view of female; B, coxae and female genitalia; C, legs I and II; D, lateral microtubercles; E, empodium; F, male genitalia.