Aculus lalithi, Xue & Zhang, 2008

Xue, Xiao-Feng & Zhang, Zhi-Qiang, 2008, New Zealand Eriophyoidea (Acari: Prostigmata): an update with descriptions of one new genus and six new species, Zootaxa 1962 (1), pp. 1-32 : 23-24

publication ID

https://doi.org/ 10.11646/zootaxa.1962.1.1

publication LSID

lsid:zoobank.org:pub:76EF3676-95EE-44EA-B95C-F6DA335B069E

DOI

https://doi.org/10.5281/zenodo.5242583

persistent identifier

https://treatment.plazi.org/id/AC65FA28-0A4F-483F-A05E-FD10C65268E7

taxon LSID

lsid:zoobank.org:act:AC65FA28-0A4F-483F-A05E-FD10C65268E7

treatment provided by

Felipe

scientific name

Aculus lalithi
status

sp. nov.

Aculus lalithi sp. nov.

( Figs 12 View FIGURE 12 & 13 View FIGURE 13 )

Description. FEMALE: (n = 10) Body fusiform, 191 (180–192), 65 (63–66) wide, 55 (53–56) thick; light yellow. Gnathosoma 23 (21–24), projecting obliquely down, pedipalp coxal seta (ep) 3 (3–4), dorsal pedipalp genual seta (d) 5 (5–6), cheliceral stylets 21 (20–21). Prodorsal shield subtriangular, 36 (35–36), 58 (55–58) wide, smooth; anterior shield lobe broad. Median, admedian and submedian lines absent. Scapular tubercles on rear margin, 29 (28–29) apart, scapular setae (sc) 17 (15–18) projecting posterior. Coxal plates smooth; anterolateral setae on coxisternum І (1b) 5 (5–6), 11 (11–12) apart, proximal setae on coxisternum І (1a) 15 (14–16), 10 (10–11) apart, proximal setae on coxisternum І (2a) 25 (22–27), 22 (21–22) apart. Prosternal apodeme 7 (7–8). Legs with usual series of setae. Legs І 28 (26–29), femur 7 (7–8), basiventral femoral seta (bv) 8 (6–8); genu 5 (4–5), antaxial genual seta (l'') 21 (20–23); tibia 7 (6–7), paraxial tibial seta (l') 5 (5–6), seta located 1/3 from proximal tibial margin; tarsus 6 (5–6), seta ft'' as long as seta ft', seta u' short; tarsal empodium (em) 4 (4–5), simple, 4-rayed, tarsal solenidion (ω) 5 (4–5), knobbed. Legs І 26 (24–27), femur 7 (6–7), basiventral femoral seta (bv) 6 (5–6); genu 4 (3–4), antaxial genual seta (l'') 5 (5–6); tibia 5 (4–5); tarsus 6 (5–6), seta ft'' as long as seta ft', seta u' short; tarsal empodium (em) 4 (4–5), simple, 4-rayed, tarsal solenidion (ω) 5 (4–5), knobbed. Opisthosoma: opisthosoma dorsally with 26 (25–28) annuli, smooth, ventrally with 49 (45–56) annuli, with round microtubercles. Setae c2 26 (24–27) on ventral annulus 9 (7–9), 46 (44–46) apart; setae d 31 (30–33) on ventral annulus 21 (19–21), 29 (27–29) apart; setae e 17 (15–19) on ventral annulus 32 (28–32), 15 (14–15) apart, setae f 16 (14–17) on 7th ventral annulus from rear, 17 (16–17) apart. Setae h1 absent. Female genitalia 12 (12–13), 20 (19–21) wide, coverflap with 12 longitudinal ridges, proximal setae on coxisternum ІІ (3a) 16 (15–16), 15 (15–16) apart.

MALE: (n = 3) Body fusiform, 158–163, 54–55 wide, 47–48 thick; light yellow. Gnathosoma 19–20, projecting obliquely down, pedipalp coxal setae (ep) 3–4, dorsal pedipalp genual seta (d) 4–5, cheliceral stylets 17–18. Prodorsal shield subtriangular, 30–32, 50–53 wide; smooth; anterior shield lobe broad. Scapular tubercles on rear margin, 22–23 apart, scapular setae (sc) 16–17 projecting posterior. Coxal plates smooth; anterolateral setae on coxisternum І (1b) 5–6, 7–8 apart, proximal setae on coxisternum І (1a) 12–13, 7–8 apart, proximal setae on coxisternum І (2a) 20–21, 16–18 apart. Prosternal apodeme 7–8. Legs with usual series of setae. Legs І 22–25, femur 5–6, basiventral femoral seta (bv) 5–6; genu 3–4, antaxial genual seta (l'') 15–17; tibia 5–6, paraxial tibial seta (l') 4–5, seta located 1/3 from proximal tibial margin; tarsus 4–5, seta ft'' as long as seta ft', seta u' short; tarsal empodium (em) 4–5, simple, 4-rayed, tarsal solenidion (ω) 4–5, knobbed. Legs І 20–21, femur 5–6, basiventral femoral seta (bv) 5–6; genu 3–4, antaxial genual seta (l'') 4–5; tibia 4–5; tarsus 4–5, seta ft'' as long as seta ft', seta u' short; tarsal empodium (em) 4–5, simple, 4-rayed, tarsal solenidion (ω) 4–5, knobbed. Opisthosoma: opisthosoma dorsally with 23–25 annuli, smooth, ventrally with 45–46 annuli, with round microtubercles. Setae c2 21–22 on ventral annulus 7–8, 38–39 apart; setae d 26–28 on ventral annulus 15–16, 24–25 apart; setae e 12–13 on ventral annulus 23–25, 10–11 apart, setae f 11–13 on 6th ventral annulus from rear, 12–13 apart. Setae h1 absent. Male genitalia 15–16 wide, proximal setae on coxisternum ІІ (3a) 8–10, 13–14 apart.

Type material. Holotype, female (marked H), from Melicope ternata (Rutaceae) , Waitakere Ranges, Auckland, New Zealand, 6 November 1999, coll. N.A. Martin. Paratypes, 9 females and 3 males, with the same data as holotype. Specimens deposited in NZAC.

Relation to host. Associated with, but probably not causing white leaf erineum.

Etymology. This species is named after Dr Lalith Kumarasinghe (Plant Health & Environment Laboratory, Investigation and Diagnostic Centre, MAF Biosecurity, Auckland, New Zealand)

Differential diagnosis. This species is similar to Aculus rumexis Xue, Song & Hong, 2008 , but can be differentiated from the latter by the following: 1) prodorsal shield smooth (median, admedian and submedian lines present in A. rumexis ), 2) coxal area with smooth (coxal area with granules in A. rumexis ), and 3) setae h1 absent (setae h1 present in A. rumexis ).

NZAC

New Zealand Arthropod Collection

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Trombidiformes

Family

Eriophyidae

Genus

Aculus

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