A review of the genus Tycherobius (Acari: Camerobiidae), with descriptions of four new species from Australia Author Fan, Qing-Hai Author Walter, David E. text Zootaxa 2006 1121 1 52 journal article 50772 10.5281/zenodo.171702 1edf6823-9117-4b17-bf91-eb07b79403d4 1175­5326 171702 Tycherobius virginiensis (McGregor) Neophyllobius virginiensis McGregor, 1950 : 69 . Tycherobius virginiensis ; Bolland, 1986 : 208 (redescription). Diagnosis Adult female. Palptarsus with 1 + 1 eupathidium + 1; with a single pdx ; idiosomal setae pdx , c1 , d1 , e1 and one member of f1 minute (2–3), peg­like, no more than 1/10 of other setae; femora I–IV with 4, 3, 3, 2; tarsi I–II with 10 + 1, 8 + 1. TABLE 1. Comparative characters of adult females of Tycherobius . Species Peritremes Palpal setae Palpal eupathidia Idiosomal setae vi: ve? information needed.
acicula 2 loops 2 1 lanceolate, c 1 , d 1 and e 1 3.0 obviously longer than others
aotearoa 2 loops 2 1 thinly clavate, d 1 , e 1 and f 1 1.3 slightly longer than others
australis 1 loop 2 1 lanceolate, subeuqal in length 1.1
edaphon 2 loops 2 2 lanceolate, c 1 , d 1 and e 1 much 1.4–1.9 longer than others
hawaiiensis complex 2 1 lanceolate, c 1 and d 1 much 1.5–1.6 longer than others
lombardinii 1 loop 2 1 lanceolate, c 1 , d 1 and e 1 much 1.6–1.9 longer than others
polonicus 2 loops 2 1 lanceolate, c 1 and d 1 much 1.5 longer than others
rhytis ? 2 1 laceolate, vi , pdx , c 1 , c 2 and d 1 1.2 slightly longer than others
stipula 2 loops 2 1 broadly clavate, subeuqal in 1.4 length
stramenticola ? 1 1 lanceolate, c 1 , d 1 and e 1 much 2.3 longer than others
superbus ?? ? lanceolate, c 1 and d 1 much? longer than others
turcicus 3 loops 2 2 lanceolate, vi and c 1 slightly 1.5 longer than others
virginiensis ? 1 1 pdx , c 1 , d 1 and e 1 minute 1.4–1.6
(continued)
pdx c1: c2 d1: d2 e1: e2 f1: f2 c1: d1: e1: f1 Tarsus I, II Femur I–IV
a single 4.0 7.7 3.8 2.2 2.8: 2.8: 1.7: 1.0 10+1, 8+1 4, 3, 3, 2
a pair 0.8 1.6 1.4 1.7 1.0: 1.4: 1.4: 1.3 10+1, 8+1 4, 3, 3, 2
a pair 0.8 1.4 1.3 1.3 1.0: 1.2: 1.4: 1.3 10+1, 8+1 4, 3, 3, 2
a pair 1.9–2.4 4.0–4.9 3.2–3.4 2.3–2.5 2.0–2.3: 2.1–2.4: 1.6: 1.0 10+1, 10+1 4, 3, 3, 2
absent 2.4–2.6 3.4–4.7 1.7–2.0 2.0–2.1 2.0–2.4: 1.9–2.2: 1.0: 1.0 9+1, 9+1 4, 3, 3, 2
absent 2.6–3.1 4.3–5.5 2.5–2.8 1.1 3.8–4.1: 3.7–3.8: 2.2–3.4: 1.0 10+1, 10+1 4, 3, 3, 2
absent 3.4 3.4 1.7 2.8 2.8: 2.4: 1.2: 1.0 10+1, 10+1 4, 3, 3, 2
a pair 1.1 1.4 0.9 1.2 1.3: 1.2: 1.0: 1.0 ? 4, 4, 3, 2
a pair 0.9 1.4 1.2 1.0 1.0: 1.1: 1.2: 1.2 10+1, 8+1 4, 3, 3, 2
absent 3.0 3.9 1.8 2.0 2.6: 2.2: 1.0: 1.0 10+1, 10+1 4, 3, 3, 2
absent? ? ? ? 1.2: 1.0:?:? ? 3, 3, 2, 2
a pair 1.2 1.1 1.4 1.9 1.3: 1.0: 1.0: 1.2 10+1, 8+1 4, 3, 3, 2
a single 0.1 0.1 0.1 0.7–0.9 1.0: 1.0: 1.0: 8.3–10 10+1, 8+1 4, 3, 3, 2
TABLE 2. Comparative characters of adult males of Tycherobius . Species Peritremes Palpal setae Palpal eupathidia Idiosomal setae vi: ve australis 1 loop 2 1 lanceolate, h1 prominently reduced 1.2 Remarks
bollandi 2 loops 2 1 lanceolate, vi , c 1 and d 1 much longer 1.5 than others
elongata 2 loops 2 hawaiiensis complex 2 quercus 1 loop 1 1 1 1 lanceolate, c 1 much longer than others 1.9 lanceolate, c 1 much longer than others 1.8–2.1 lanceolate, c 1 much longer than others 1.6
stipula 2 loops 2 1 broadly clavate, h 1 reduced 1.2
turcicus 3 loops 2 2 lanceolate, d 1 , e 1 , f 1 and h 1 reduced 1.6
(continued)
pdx c1: c2 d1:d2 e1: e2 f1: f2 c1: d1: e1:f1 Tarsus I, II Tibia III Femur III, IV
a pair 1.1 1.1 1.1 1.2 1.2: 1.0: 1.3: 1.3 10+1, 8+1 7+1 3, 2
absent 1.6 3.5 0.7 0.9 3.9: 4.1: 1.0: 1.0 9+1, 8+1 7+1 3, 2
a pair 3.1 0.9 1.3 0.9 5.4: 1.4: 1.4: 1.0 9+1, 8+1 7+1 3, 2
absent 2.2–2.8 1.6–2.4 1.0 1.0 4.0–5.9: 1.6–2.4: 1.0: 1.0 9+1, 9+1 7+1 3, 2
absent 5.9–6.4 2.6–3.4 0.9 0.8–1.0 11.0: 2.5–3.3: 1.0: 1.0–1.3 10+1, 10+1 7+1 3/4, 2
a pair 0.7 1.1 0.9 0.8 1.2: 1.3: 1.1: 1.0 10+1, 8+1 7+1 3, 2
a pair 1.4 1.2 1 0.9 3.0: 1.7: 1.3: 1.0 8+1, 8+1 7+1 3, 2
TABLE 3. Described stages of Tycherobius .
Species Female Male Deutonymph Protonymph Larva Reference
acicula + ­ ­ ­ ­ This paper
aotearoa + ­ ­ ­ ­ Fan & Zhang, 2005
australis + + ­ + + This paper
bollandi ­ + ­ ­ ­ Ayy ₁ld₁z & Doğan, 2003
edaphon + ­ ­ ­ ­ Flechtmann, 2001
elongata ­ + ­ ­ ­ This paper
hawaiiensis + + ­ + + Bolland & Swift, 2000
lombardinii + ­ ­ ­ ­ Bolland, 1986
polonicus + ­ ­ ­ ­ Bolland, 1986
quercus ­ + ­ ­ ­ Bolland & Koç, 2001
rhytis + ­ ­ ­ ­ Chaudhri et al. , 1974
stipula + + ­ ­ ­ This paper
stramenticola + ­ ­ ­ ­ Bolland, 1986
superbus + ­ ­ ­ ­ Bolland, 1986
turcicus + + ­ + ­ Ayy ₁ld₁z & Doğan, 2003
virginiensis + ­ ­ ­ ­ Bolland, 1986
+, described; ­, not described.
Distribution and habitat
United States. Virginia: habitat unknown (McGregor 1950); sand­pine litter (Bolland
1986).
Adult females of this species are unique in setae pdx , c1 , d1 , e1 being minute.