Atacoseius Berlese 1905

Klompen, Hans & Gerdeman, Beverly S., 2023, Genus-level revision of the Heterozerconoidea (Parasitiformes: Mesostigmata), Zootaxa 5322 (1), pp. 1-66 : 61

Atacoseius Berlese 1905

Atacoseius Berlese 1905: 162 [type species: Atacoseius pellucens Berlese 1905 , by monotypy].

Atacoseius .— Baker & Wharton 1952: 56; Domrow 1956: 195; Hallan 2017.

Locality: Bogor (as Buitenzorg), Java, Indonesia.

Remarks. The description of this monotypic genus is based entirely on the dorsum and the pattern of long setae on the legs, as the venter in both available specimens was not visible ( Berlese 1905). Berlese (1905) noted some resemblance with Heterozerconidae , and this species has occasionally been grouped in Heterozerconidae . However, the combination of relatively short cheliceral digits, presence of an added pair of long setae on the prodorsum (in addition to the setae referred to as j 1 in this study), six pairs of long postero-lateral and posterior setae, the insertion pattern of the long filiform setae on legs I (multiple long setae on the genua, tibiae, and tarsi; shorter ones on the femora), and the absence of any indication of long spine-like setae on femora I, make it unlikely that this species belongs in Heterozerconidae . A more likely option would be in Trigynaspida, possibly Paramegistidae .