Dicranocentrus Schött, 1893

Bellini, Bruno Cavalcante, Greenslade, Penelope, Baquero, Enrique, Jordana, Rafael & Souza, Paolla Gabryelle Cavalcante De, 2022, A synthesis of the current knowledge on the Australian Orchesellidae (Collembola, Entomobryoidea), Zootaxa 5115 (2), pp. 221-257 : 224

Genus Dicranocentrus Schött, 1893

Diagnosis. Specimens usually pigmented, colour patterns variable, eyepatches black. Apically rounded or truncate scales present, as in other Heteromurini . Antennae usually six-segmented with Ant. I and II basally subdivided, proximal subarticles smaller than the distal ones, Ant. III usually longer than Ant. IV, rarely subequal or shorter; apical bulb of Ant. IV absent; Ant. III–IV annulated, devoid of scales. Postantennal organ absent. Eyes 8+8. Prelabral chaetae smooth and not bifurcate. Labial chaetae e smooth; post-labial quadrangle (anterior chaetae surrounding the cephalic groove) chaetae smooth or rough, never ciliate. Th. II not projected over head, Abd. I with mac, Abd. V with four or seven sens (atypical). Unguis (claw) with a single outer tooth. Dental base with or without macrochaetae, if present, erect and blunt or plumose (not sinuous). Dental spines simple, if present. Mucronal spine generally present (adapted from Mari-Mutt 1979; Mari-Mutt & Bhattacharjee 1980; Bellini et al. 2020, 2021).

Remarks. The updated diagnosis mostly agrees with Bellini et al. (2020), but it was modified to exclude Falcomurus litoreus (Mari-Mutt, 1985) and F. halophilus (Mari-Mutt, 1985) , previously assigned as Dicranocentrus species ( Bellini et al. 2021). Also, as noted by Mari-Mutt (1979) and Mari-Mutt & Bhattacharjee (1980), Dicranocentrus taxa can have the Ant. I and/or II undivided. While this may be the result of regenerating antennae (Mari-Mutt 1979), at least in D. pilosus Mari-Mutt & Bhattacharjee (1980) the subdivision of the Ant. II was apparently lost. The same occurs with the mucronal spine, which is universally seen in Dicranocentrus species but is missing in some specimens of D. indicus Bonet, 1930 sensu Yosii (1966) .