Caramuruacarus Bassini-Silva and Jacinavicius 2022, gen. nov.
Creators: name: Bassini-Silva, R.
name: Zampaulo, R. A.
name: Welbourn, C.
name: Ochoa, R.
name: Brescovit, A. D.
name: Barros-Battesti, D. M.
name: Jacinavicius, F. C.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Trombidiformes
Leeuwenhoekiidae
Caramuruacarus

description: Caramuruacarus Bassini-Silva and Jacinavicius gen. nov.
Type species.
Caramuruacarus carnavalesca Bassini-Silva and Jacinavicius sp. nov.
Diagnosis.
Larva. Palptarsus with five-branched setae and solenidion (ω) (Figure 2 (a,b)); odontus tetrafurcate (Figure 2 (a)); cheliceral blade with tricuspid cap and the dorsal side with row of teeth (Figure 2 (a)); eyes present, 2/2 (Figure 3); tracheae and stigma absent; prodorsal sclerite with nasus (Figures 3, 10 (a)); pair of flagelliform trichobothria (si) (Figure 3); se setae on prodorsal sclerite (Figures 3, 10 (a)); Fe legs I–III each entire (Figure 5); Cx I bisetose (Figure 5 (a)); Cx II and III each unisetose (Figure 5 (b,c)); pretarsus legs I–III each with claws and claw-like empodium without onychotriches (Figure 5); Ge I with two solenidia (σ) (Figure 5 (a)); Ge II with one solenidion (σ) (Figure 5 (b)); Ge III without solenidia (Figure 5 (c)); Ta I and II each with subterminal eupathidium (ζ) (Figure 5 (a,b)). Deutonymph and adult are unknown.
Abbreviations: AW = distance between the bases of the ve setae; PW = distance between the bases of the se setae; SB = distance between the trichobothria (si) bases; ASB = distance from trichobothria (si) bases to extreme anterior margin of the prodorsal sclerite; PSB = distance from trichobothria (si) bases to extreme posterior margin of the prodorsal sclerite; SD = ASB + PSB; AP = distance between the bases of ve and se; ve = external vertical setae; se = external scapular setae; vi = internal vertical setae; si = internal scapular setae (trichobothria); 1a = anterior sternal setae inside the coxal field I; 3a = posterior sternal setae; DMIN = minimum length of dorsal opisthosomal setae; DMAX = maximum length of dorsal opisthosomal setae; VMIN = minimum length of ventral idiosomal setae; VMAX = maximum length of ventral idiosomal setae.
Abbreviations: Cx I = length of coxal field I; Tr I = length of trochanter leg I; Fe I = length of femur leg I; Ge I = length of genu leg I; Ti I = length of tibia leg I; Ta I (L) = length of tarsus leg I; Ta I (W) = width of tarsus leg I; Cx II = length of coxal field II; Tr II = length of trochanter leg II; Fe II = length of femur leg II; Ge II = length of genu leg II; Ti II = length of tibia leg II; Ta II (L) = length of tarsus leg II; Ta II (W) = width of tarsus leg II.
Abbreviations: Cx III = length of coxal field III; Tr III = length of trochanter leg III; Fe III = length of femur leg III; Ge III = length of genu leg III; Ti III = length of tibia leg III; Ta III (L) = length of tarsus leg III; Ta III (W) = width of tarsus leg III.
Abbreviations: I = σ I, σ II, σ III = length of the solenidia on Genu I–III; Κ I, Κ II = length of microseta on Genu I, Tibia I and Genu II; φ’ I, φ” I = length of the solenidia on Tibia I; ω I = length of solenidion on Tarsus I; Ε I = length of famulus on Tarsus I; ζ’ I = length of dorsal eupathidium on Tarsus I; ζ I = length of subterminal eupathidium on Tarsus I; φ’ II, φ” II = length of the solenidia on Tibia II; ω II = length of solenidion on Tarsus II; Ε II = length of famulus on Tarsus II; ζ II = length of subterminal eupathidium on Tarsus II; φ III = length of the solenidia on Tibia III; ω III = length of solenidion on Tarsus III.
Etymology. The new genus is named in honour of the epic poem ‘Caramuru’ that exalts Brazilian lands, combined with the word ‘acarus’, which means ‘mite’ in Latin. Gender masculine.
Differential diagnosis. Caramuruacarus Bassini-Silva and Jacinavicius gen. nov. is similar to Akodonacarus Goff and Webb, 1989, Hannemania Oudemans, 1911, Leeuwenhoekia Oudemans, 1911, Mastalacarus Goff and Lukoschus, 1983, Morelacarus VercammenGrandjean, 1973 and Xenodontacarus Loomis and Goff, 1973 in having five-branched setae on the palptarsus. The new genus differs from Akodonacarus, Hannemania, Leeuwenhoekia, Morelacarus and Xenodontacarus by having only one side of the cheliceral blade with a row of teeth (Figure 1 (a)), and four-pronged odontus (Figure 2 (a)), while the other genera mentioned above differ by having dorsal and ventral rows of teeth and two or three prongs on the odontus. Furthermore, Caramuruacarus Bassini-Silva and Jacinavicius gen. nov. differs from Akodonacarus by the absence of dorsal eupathidium on Ta I and σ on Ge III – Figure 5 (a,b) (vs present); from Hannemania by having two σ on Ge I – Figure 5 (a) (vs multiples) and absence of σ on Ge III – Figure 5 (c) (vs multiples); from Leeuwenhoekia by the absence of the ζ on the palptarsus – Figure 2 (b) (vs present); from Mastalacarus by having two σ on Ge I – Figure 5 (a) (vs one σ), and the absence of σ on Ge III – Figure 5 (c) (vs present); from Morelacarus by having two σ on Ge I – Figure 5 (a) (vs one σ), and the presence of σ on Ge II – Figure 5 (b) (vs absent); and from Xenodontacarus by having the σ on Ge II – Figure 4 (b) (vs absent) and claws and claw-like empodium without onychotriches – Figure 5 (vs with onychotriches).
description: Published as part of Bassini-Silva, R., Zampaulo, R. A., Welbourn, C., Ochoa, R., Brescovit, A. D., Barros-Battesti, D. M. & Jacinavicius, F. C., 2022, A new genus and two new species of chigger mites (Trombidiformes: Leeuwenhoekiidae) from Brazilian caves with notes about the genus Whartonia Ewing, 1944, pp. 1297-1313 in Journal of Natural History 56 (29 - 32) on pages 1299-1301, DOI: 10.1080/00222933.2022.2118087, http://zenodo.org/record/7156386