Calepitrimerus cryptocaryaer, Xue & Liu, 2022

Xue, Xiao-Feng & Liu, Xin-Yu, 2022, Three new species of Calepitrimerus (Acari: Eriophyidae) from China, Zootaxa 5133 (2), pp. 279-292 : 283-286

Calepitrimerus cryptocaryaer sp. nov.

( Figs 3–4 )

Diagnosis (female). Body fusiform; prodorsal shield with an acuminate frontal lobe, median line short, present at anterior 1/8 and posterior 1/8, admedian lines formed two large cells by transverse lines at center, admedian and submedian lines formed four large cells at each side, and many elliptical granules; legs with 4-rayed simple tarsal empodium, and knobbed tarsal solenidion; opisthosoma dorsally with elliptical microtubercles on ridges, while ventrally with elliptical to linear microtubercles; female genital coverflap with many dashes at base and 14 striae.

Female (n = 8): Body fusiform ( Figure 4A ), 182 (182–205) long, 63 (63–72) wide; light yellow in colour. Gnathosoma 17 (16–20) long, projecting obliquely downwards, cheliceral stylets 14 (14–18), pedipalp coxal seta (ep) 3 (2–3), dorsal pedipalp genual setae (d) 11 (11–12), palp tarsal ventral setae (v) absent. Prodorsal shield ( Figures 3 AD, 4B) 53 (53–55), including the frontal lobe, 63 (63–75) wide, frontal lobe acuminate; median line short, present at anterior 1/8 and posterior 1/8, admedian lines formed two large cells by transverse lines at center, admedian and submedian lines formed four large cells at each side; many dashes present on prodorsal shield. Scapular tubercles ahead of rear shield margin, setae sc 5 (5–6), 21 (20–21) apart, projecting centrad. Coxigenital region with 6* semiannuli between coxae and genitalia, smooth; coxal plates ( Figures 3 CG, 4C) with granules, anterolateral setae on coxisternum І (1b) 7 (6–7), 14 (13–15) apart; proximal setae on coxisternum І (1a) 11 (10–11), 7 (7–8) apart; proximal setae on coxisternum ІІ (2a) 25 (23–25), 25 (25–27) apart. Prosternal apodeme absent. Leg І ( Figure 3L 1 ) 30 (30–33), femur 10 (9–10), basiventral femoral setae (bv) 12 (10–12); genu 5*, antaxial genual setae (l'') 29 (29–30); tibia 8 (7–8), paraxial tibial setae (l') 5 (5–6), located at center; tarsus 5*, paraxial fastigial tarsal setae ft’ 15 (15–19), antaxial fastigial tarsal setae ft’’ 22 (22–23), setae u' 4 (4–5); tarsal empodium (em) 6 (6–7), simple, 4-rayed, tarsal solenidion (ω) 7*, knobbed. Leg ІІ ( Figure 3L 2 ) 28 (28–30), femur 9 (8–9), basiventral femoral setae (bv) 10 (9–10); genu 4 (4–5), antaxial genual setae (l'') 5 (5–6); tibia 6*; tarsus 5*, paraxial fastigial tarsal setae ft’ 5 (5–6), antaxial fastigial tarsal setae ft’’ 21 (19–21), setae u' 4*; tarsal empodium (em) 6*, simple, 4-rayed, tarsal solenidion (ω) 6*, knobbed. Opisthosoma dorsally with 45 (43–45) semiannuli, with elliptical micotubercles on ridges, with three ridges, middorsal ridge ended on 26–27 annuli, in a broad furrow ( Figure 4A ); ventrally with 69 (69–71) semiannuli, with elliptical to linear microtubercles. Setae c2 19 (19–23), on ventral semiannulus 9*, 48 (48–50) apart; setae d 31 (28–31), on ventral semiannulus 24 (22–24), 25 (25–30) apart; setae e 24 (24–30), on ventral semiannulus 43 (43–44), 11 (11–13) apart; setae f 26 (22–26), 21 (21–24) apart, on 6th ventral semiannulus from rear; setae h1 5*, setae h2 50 (48–53). Female genitalia ( Figures 3 CG, 4C) 15 (15–16), 22* wide, coverflap with many dashes at base and 14 striae, setae 3a 15 (15–19), 13* apart. Internal genitalia ( Figures 3 IG, 4D): spermathecae ovoid, oriented posterolaterad; spermathecal tubes relatively short; transverse genital apodeme trapezoidal.

Male (n = 1, dorsal view): Body fusiform, 160; light yellow in colour. Gnathosoma 22 long, projecting obliquely downwards, cheliceral stylets 16, pedipalp coxal seta (ep) 3, dorsal pedipalp genual setae (d) 9, palp tarsal ventral setae (v) absent. Prodorsal shield 50, including the frontal lobe, 52 wide. Scapular tubercles ahead of rear shield margin, setae sc 4, 19 apart, projecting centrad. Coxigenital region with 8 semiannuli between coxae and genitalia, smooth; coxal plates with short lines, anterolateral setae on coxisternum І (1b) 8, 11 apart; proximal setae on coxisternum І (1a) 13, 7 apart; proximal setae on coxisternum ІІ (2a) 20, 22 apart. Prosternal apodeme absent. Leg І 26, femur 9, basiventral femoral setae (bv) 9; genu 4, antaxial genual setae (l'') 22; tibia 6, paraxial tibial setae (l') 4, located at center; tarsus 5, paraxial fastigial tarsal setae ft’ 18, antaxial fastigial tarsal setae ft’’ 20, setae u' 4; tarsal empodium (em) 6, simple, 4-rayed, tarsal solenidion (ω) 6*, knobbed. Leg ІІ 24, femur 8, basiventral femoral setae (bv) 8; genu 4, antaxial genual setae (l'') 4; tibia 5; tarsus 5, paraxial fastigial tarsal setae ft’ 5, antaxial fastigial tarsal setae ft’’ 17, setae u' 4; tarsal empodium (em) 6, simple, 4-rayed, tarsal solenidion (ω) 6*, knobbed. Opisthosoma dorsally with 43 semiannuli, with elliptical microtubercles on ridges, with three ridges, middorsal ridge ended on 23 annuli, in a broad furrow; ventrally with 64 semiannuli, with round to linear microtubercles. Setae c2 20, on ventral semiannulus 9, 41 apart; setae d 31, on ventral semiannulus 21, 23 apart; setae e 25, on ventral semiannulus 39, 10 apart; setae f 20, 18 apart, on 6th ventral semiannulus from rear; setae h1 5, setae h2 52. Male genitalia 10, 16 wide, setae 3a 15, 12 apart ( Figures 3 GM, 4E).

Type material. Holotype, female ( NJAUFJ24.1 ), found on Cryptocarya concinna Hance (Lauraceae) , Wuyi Mountain , Fujian province, China, 27°40′28″N, 118°02′37″E, elevation 251 m, 21 August 2017, coll. Yue Yin. Paratypes, 7 females and one male (NJAUFJ24.2–9), from Cryptocarya concinna Hance (Lauraceae) , same details as holotype.

Relation to the host plant. Vagrant on lower leaf surface with no apparent symptom to the host.

Etymology. The specific designation cryptocaryaer is derived from the generic name of host plant, Cryptocarya , adding a postfix - er; masculine in gender.

Deferential diagnosis. The new specie is similar to C. fopingi Xue, Song & Hong, 2006 by prodorsal shield design, from Lindera glauca (Lauraceae) , but can be differentiated by median line present at anterior and posterior 1/8 (median line continuous in C. fopingi ), dorsal annuli with microtubercles on ridges (dorsal annuli smooth in C. fopingi ), and empodium 4-rayed (empodium 6-rayed in C. fopingi ).

Figures

FIGURE 1. Calepitrimerus liuanense sp. nov. AD, prodorsal shield; CG, female coxigenital area; em, empodium; GM, male external genitalia; IG, female internal genitalia; L1, leg І; L2, leg II; DM, dorsal view of telosoma; VM, ventral view of telo- soma. Scale bar: 15 μm for AD, CG, DM, GM, IG, L1, L2, VM; 5 μm for em.

FIGURE 2. Calepitrimerus liuanense sp. nov. A, dorsal view of male; B, prodorsal shield; C, female coxigenital area; D, female internal genitalia; E, tarsus and empodium; F, male coxigenital area. Scale bar: 20 μm for A, D; 10 μm for B, C, F; 5 μm for D, E.

FIGURE 3. Calepitrimerus cryptocaryaer sp. nov. AD, prodorsal shield; AL, lateral view of anterior part of body; CG, female coxigenital area; em, empodium; GM, male external genitalia; IG, female internal genitalia; LO, lateral microtubercles; L1, leg І; L2, leg II; PM, lateral view of telosoma. Scale bar: 27 μm for AL, PM; 15 μm for AD, CG, GM, IG, L1, L2; 5 μm for em, LO.

FIGURE 4. Calepitrimerus cryptocaryaer sp. nov. A, dorsal view; B, prodorsal shield; C, female coxigenital area; D, female internal genitalia; E, male external genitalia. Scale bar: 20 μm for A; 10 μm for B, C, E; 5 μm for D.