Otostigmini Kraepelin, 1903

Schileyko, Arkady A., Vahtera, Varpu & Edgecombe, Gregory D., 2020, An overview of the extant genera and subgenera of the order Scolopendromorpha (Chilopoda): a new identification key and updated diagnoses, Zootaxa 4825 (1), pp. 1-64 : 41-42

publication ID	https://doi.org/ 10.11646/zootaxa.4825.1.1
publication LSID	lsid:zoobank.org:pub:F230F199-1C94-4E2E-9CE4-5F56212C015F
DOI	https://doi.org/10.5281/zenodo.4455423
persistent identifier	https://treatment.plazi.org/id/03DE092D-FFDA-D723-FF13-F9432DA3DE9A
treatment provided by	Plazi
scientific name	Otostigmini Kraepelin, 1903
status

Treatment

Tribe Otostigmini Kraepelin, 1903

Synonyms. Arrhabdotini Attems, 1930

Diagnosis. Antenna relatively long (i.e. reaching at least to posterior margin of tergite 4 when reflexed), basal antennal articles cylindrical (not strongly flattened), definitely longer than wide. Median tooth of labrum ( Fig. 95 View FIGURES 89–96 ) well developed (except for Edentistoma , former tribe Arrhabdotini ; see below). Forcipular tooth-plates present (except for Edentistoma ), their basal sutures form a virtually straight line ( Fig. 96 View FIGURES 89–96 ), right angle ( Fig. 91 View FIGURES 89–96 ) or an obtuse angle ( Fig. 86 View FIGURES 84–88 , 100 View FIGURES 97–101 , 106 View FIGURES 102–107 ); trochantero-prefemoral process present in most genera. Tarsungula long in most of genera ( Fig. 96 View FIGURES 89–96 ), much elongated in Edentistoma and visibly shortened in Sterropristes (compare Fig. 114 View FIGURES 113–118 and Fig. 120); their inner surface rounded or with 1 or 2 sharp longitudinal ridges, rarely saw-like (in Sterropristes only). LBS 7 with or without spiracles. Pleuron ( Figs 82 View FIGURES 78–83 , 103 View FIGURES 102–107 ) with intersclerite membrane well visible, without set of longitudinal pleurites anteriorly. Coxopleuron with ( Fig. 104, 105 View FIGURES 102–107 ) or without (in Otostigmus (Parotostigmus) ( Fig. 99 View FIGURES 97–101 ) and Alipes ) well-developed process. Ultimate leg pretarsus claw-shaped, well-developed in most genera. Edgecombe & Bonato (2011: 400) also wrote: “ Border between labral and clypeal part of epipharynx strongly curved forwards... Testicular vesicles oriented oblique to central deferens duct”.

Number of subtaxa. 6 genera (3 subgenera in genus Otostigmus ). “Ca 200 species in six genera” sensu Edgecombe & Bonato (2011: 400).

Range. As for family.

Sexual dimorphism. Present in 3 taxa of genus-group.

Remarks. Treated as a tribe in Edgecombe & Bonato (2011: 400), Vahtera et al. (2012a: 7, 2012b: 235), Vahtera et al. (2013: 578), Vahtera & Edgecombe (2014: 2, 5, 7). In 2013 Vahtera et al. wrote (p. 578): “The generic classification of Otostigmini has a poor fit to phylogenetic relationships, although nodal support within this tribe is weak”.