Caramuruacarus carnavalesca Bassini-Silva and Jacinavicius, 2022

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, Journal of Natural History 56 (29 - 32), pp. 1297-1313 : 1302-1304

publication ID 10.1080/00222933.2022.2118087


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scientific name

Caramuruacarus carnavalesca Bassini-Silva and Jacinavicius

sp. nov.

Caramuruacarus carnavalesca Bassini-Silva and Jacinavicius sp. nov.

( Figures 2–5 View Figure 2 View Figure 3 View Figure 4 View Figure 5 and 10 View Figure 10 ; Tables 1–4 View Table 1 )


Larva (holotype). Gnathosoma – fPp = B/B/BNB/5Bω; odontus tetrafurcate; cheliceral blade with tricuspid cap and the ventral side with ventral row of large blunt of 8 to 10 teeth; gnathobase punctate, subcapitular (bs) and adoral (cs) setae branched ( Figure 2 View Figure 2 (a,b)). Idiosoma – eyes present, 2/2, set in ocular plate, anterior lens larger; prodorsal sclerite with sparse punctations ( Figures 3 View Figure 3 , 10 View Figure 10 (a)), anterior margin slightly sinuous with nasus, lateral and posterior margins concave; with pair of nude flagelliform trichobothria (si), and four slightly expanded setae [pair of ve (= AL) setae and pair of vi (= AM) setae] plus a pair of expanded and leaflike se (= PL) setae, with long and triangular setules; se> si> vi ≥ ve; tracheae and stigma absent; opisthosoma ( Figure 4 View Figure 4 (a,b)) with a total of 91 setae, dorsal opisthosoma with 46 setae, C row with 16 setae, D and E rows with eight setae each, F row with six setae and H row with eight setae irregularly placed, and 45 ventral opisthosomal setae (22 setae anterior to the anus and 23 posterior setae). Dorsal and lateral ventral opisthosomal setae expanded and modified, leaflike, like se setae ( Figure 10 View Figure 10 (b,c)); One pair of sternal setae (3a) between coxal fields III. Legs – femur of legs I–III not divided into basifemur and telofemur, each leg terminates with pair of claws and claw-like empodium without onychotriches, coxal fields punctate; Leg I – coxal field setae 1a and 1b branched (2B); trochanter 1B; femur 6B; genu 4B, 2 σ and Κ; tibia 8B, 2 φ and Κ; tarsus 23B with ω, ε, and subterminal eupathidium (ζ), base of famulus (ε) distal to solenidion (ω) ( Figure 5 View Figure 5 (a)). Leg II – coxal field seta 2b (1B); trochanter 1B; femur 5B; genu 4B, σ and Κ; tibia 6B, 2 φ; tarsus 16B with ω, ε and subterminal eupathidium (ζ), base of ε proximal to ω ( Figure 5 View Figure 5 (b)). Leg III – coxal field seta 3b (1B) in distal position; trochanter 1B; femur 4B; genu 4B, tibia 6B, φ; tarsus 15B ( Figure 5 View Figure 5 (c)).

Type material

Holotype. Larva, Cave CH-25 , Santa Rita de Ouro Preto, Minas Gerais State, Brazil, (20.552° S, 43.514°W); 28–30 April 2009; on the soil; F. Pellegatti et al. coll.; deposited as IBSP 15693 View Materials . GoogleMaps Etymology. The specific name ‘carnavalesca’ (adjective related to Carnaval) refers to the extravagance of the dorsal opisthosomal setae, se setae and some ventral setae that recall the costumes of the Carnaval – a traditional Brazilian festival.