Fujianacarus wisterianis Song, Xue & Hong, 2008

Ruan, Hong-Yan, Shou, Ru-Fang, Lian, Ran-Ran & Tan, Meng-Chao, 2023, Two new species of eriophyoid mites (Acari: Prostigmata: Eriophyoidea) associated with Callerya Endl. and supplementary descriptions of Fujianacarus wisterianis from China, Zootaxa 5369 (3), pp. 413-426 : 421-425

Fujianacarus wisterianis Song, Xue & Hong, 2008 ( Figures 5–7 )

Fujianacarus wisterianis ; Song et al., 2008: 42–52 .

Supplementary description. Female (n=10). Body fusiform, 170 (139–170) including gnathothoma, 76 (70–78) wide, 42 (40–45) thick, whitish in color. Gnathosoma 30 (28–30) curved downwards, cheliceral stylets 25 (25–26), setae ep 2 (2–3), setae d 7 (7–8) unbranched, setae v 2 (2–3). Prodorsal shield 54 (50–54) including the frontal lobe, 78 (73–78) wide. Frontal lobe 9 (8–11), with numerous granules. Prodorsal shield pattern ornamented with several and dense short dashes, median line complete and slightly diverging close to rear shield margin, admedian lines complete, submedian lines interrupted and arched, numerous granules on lateral sides of prodorsal shield. Scapular tubercles ahead of rear shield margin, setae sc 5 (5–6), 18 (16–20) apart. Coxal plates smooth; setae 1b 8 (7–8), 15 (15–16) apart; setae 1a 14 (13–14), 10 (9–11) apart, setae 2a 27 (25–31), 22 (19–22) apart. Coxigenital region with 6 (4–6) semiannuli between coxae and genitalia, smooth. Leg I 34 (31–35); trochanter 3 (2–3), femur 12 (11–12), setae bv 12 (11–12); genu 5 (4–5), setae l ″ 32 (28–32); tibia 8 (7–8), setae l ′ 5 (5–6), located at basal 1/4; tarsus 6 (6–7), setae ft ′ 25 (25–27), setae ft ″ 23 (23–25), setae u’ 3 (2–3); tarsal solenidion ω 6 (6–7), curved down, knobbed; tarsal empodium 5 (5–6), simple, 4-rayed. Leg II 33 (29–33); trochanter 2 (2–3), femur 12 (11–12), setae bv 12 (10–12); genu 5 (4–5), setae l ″ 5 (5–7); tibia 6 (6–7); tarsus 7 (6–7), setae ft ′ 5 (4–5), setae ft ″ 20 (17–20), setae u’ 3 (2–3); tarsal solenidion ω 6 (6–7), curved down, knobbed; tarsal empodium 5 (4–5), simple, 4-rayed. Opisthosoma dorsally with a median ridge, 29 (29–30) broad dorsal semiannuli, with elliptical microtubercles, first annulus broad, equal to 2 or 3 annuli, with numbers of irregular vertical lines; 58 (57–59) ventral semiannuli, with elongated microtubercles close to the rear margins of annuli. Setae c2 12 (10–12), 50 (48–53) apart, on ventral semiannulus 8 (8–9); setae d absent; setae e 8 (8–10), 11 (11–13) apart, on ventral semiannulus 35 (35–36); setae f 20 (18–20), 20 (19–20) apart, on 6 th ventral annulus from rear; setae h1 absent, seta h2 47 (40–47), 8 (7–8) apart. Female genitalia 17 (16–18), 24 (24–25) wide, coverflap with 14 (13–15) longitudinal striae and with granules at base; setae 3a 8 (6–11), 18 (15–18) apart. Internal genitalia: both spermathecae globose and are equal in size, oriented laterad and slightly posteriad; spermathecal tubes relatively short; transverse genital apodeme trapezoidal, distally folded.

Male (n=3). Body, similar in shape and prodorsal shield arrangement to female. 143–153 including gnathothoma, 56–58 wide, whitish in color. Gnathosoma 26–28 curved down, cheliceral stylets 22–23. Prodorsal shield 56–58, 63–67 wide. Scapular tubercles ahead of rear shield margin, setae sc 5–6, 15–18 apart. Coxae, setae 1b 6–8, 14–15 apart; setae 1a 11–13, 9–10 apart; setae 2a 25–27, 20–21 apart. Leg I 30–31; femur 10–11, setae bv 11–12; genu 4–5, setae l ″ 26–29, tibia 6–7, setae l ′ 5–6; tarsus 6–7, setae ft ′ 21–24, setae ft ″ 20–25; tarsal solenidion ω 5–6, tarsal empodium 5–6, simple, 4-rayed. Leg II 29–31; femur 11–12, setae bv 10–12; genu 4–5, setae l ″ 5–6, tibia 5–6; tarsus 6–7; setae ft ′ 5–7, setae ft ″ 18–20; tarsal solenidion ω 5–6, tarsal empodium 4–5, simple, 4-rayed. Opisthosoma dorsally with a median ridge, 29–30 dorsal semiannuli; 56–58 ventral semiannuli. Setae c2 9–11, 44–46 apart, on ventral semiannulus 8–9; setae d absent; setae e 7–8, 10–12 apart, on ventral semiannulus 35–37; setae f 18–20, 19–20 apart, on 6 th ventral annulus from rear; setae h1 absent, setae h2 42–45, 8–9 apart. Male genitalia 16–18 wide; setae 3a 7–8, 9–10 apart.

Material. Ten females and three males (slide numbers EPF2-1.1~1.13), found on Derris trifoliata Lour. ( Fabaceae ), Diaoluoshan National Natural Reserve, lingshui County, Hainan Province, 18°46′46′′N, 109°53′27′′E, 15 Apr. 2011, coll. Guoquan Wang; eight females and two males (slide numbers EPF2-1.14~1.24), found on Callerya sp. (Leguminosae), Jiulongshan National Natural Reserve, Lishui city, Zhejiang Province, 28°20′12″N, 118°53′43″E, elevation 780 m, 25 Jun 2019, coll. Mengchao Tan; 12 females (slide numbers EPF2-1.25~1.37), found on Callerya nitida (Bentham) R. Geesink (Leguminosae) , Jinzhongshan National Nature Reserve, Baise City, Guangxi Zhuang Autonomous Region, 24°37′19″N, 104°54′40″E, elevation 1460 m, 2 July 2020, coll. Mengchao Tan.

Host plant. Wisteria sinensis (Sims) Sweet (Leguminosae) ; Derris trifoliata Lour. , Callerya nitida (Bentham) R. Geesink (Leguminosae) .

Relation to the host. Vagrant on the underside of the leaves. No apparent damage to the host plant was observed.

Distribution. Fujian, Guangxi, Zhejiang, Hainan

Remark. The holotype female was described by Song et al. on Wisteria sinensis (Sims) Sweet (Leguminosae) from China (Fujian). However, we also found this species from Derris trifoliata Lour. and Callerya nitida (Bentham) R. Geesink (Leguminosae) . The morphometry of the female appears to match the original description by Song et al., 2008. The principal differences between this species and the descriptions given by Song are the ornamentation of the prodorsal shield (the prodorsal shield without dense short dashes in Song’s specimens versus the prodorsal shield with several short lines and dense short dashes in present specimens), frontal lobe (smooth in Song’s specimens versus with numerous spiny protuberances in present species), setae h1 (present in Song’s specimens versus absent in present species). In addition, we also described the female’s internal genitalia and males of this species for the first time.

Figures

FIGURE 5. Line drawings of Fujianacarus wisterianis Song, Xue & Hong, 2008: CGF. Coxigenital region of female; D. Dorsal view of female; em. Empodium; GM. Male genital region; IG. Female internal genitalia; L. Lateral view of female; L1. Leg I; L2. Leg II. Scale bar: 40 μm for D, L; 25 μm for CGF, L1, L2; 10 μm for GM, IG; 5 μm for em.

FIGURE 6. Images of Fujianacarus wisterianis Song, Xue & Hong, 2008: A. Dorsal view of female; B. Ventral view of male. Scale bar: 50 μm for A, B.

FIGURE 7. Images of Fujianacarus wisterianis Song, Xue & Hong, 2008: A and B. Prodorsal shield of female; C. Coxigenital region of female; D. Female internal genitalia; E. Empodium; F. External genitalia of male. Scale bar: 20 μm for A, B; 10 μm for C, D; 5 μm for E, F.