Stigmaeus

Dorsal (left) and ventral views of Stigmaeus alvandis, from Khanjani & Ueckermann (2002).

Belongs within: Raphignathoidea.

Stigmaeus is a genus of predatory mites with ten to sixteen dorsal shields on the idiosoma, and four pairs of setae on the prodorsal shield (Khanjani & Ueckermann 2002).

Characters (from Khanjani & Ueckermann 2002): Idiosoma with 10–16 dorsal shields, dimpled or reticulated in most species; prodorsum with four pairs of setae on single large or on a large median and a pair of lateral shields; opisthosomal shielding consisting of an unpaired median shield bearing two or three pairs of setae and unpaired or paired suranal shield and three or six pairs of smaller shields (humerals, marginal, median zonals, lateral zonals and intercalaries) surrounding median shield. Median shield distinct, indistinct or absent. Dorsum with 13–14 pairs of setae.

<==Stigmaeus Koch 1836 KU02
    |--*S. cruentus Koch 1836 KU02
    |--S. africanus E-KO07
    |--S. alvandis Khanjani & Ueckermann 2002 KU02
    |--S. antrodes Berlese 1910 SB63 [incl. S. antrodes var. reticulatus Halb. 1923 G44]
    |--S. bdelloides SS55
    |--S. bicolor Canestrini & Fanzago 1876 CF77
    |--S. elongatus Berlese 1886 [incl. S. luteus Summers 1962] KU02
    |--S. eutrichus Berlese 1910 SB63
    |--S. fissuricola Halbert 1920 [=S. rhodomelas var. fissuricola] S76
    |--S. raynei WHE88
    |--S. rhodomelas Berl. 1910 G44
    |--S. sinai WL09
    |--S. spagneti WHE88
    |--S. unicus Kuznetzov 1977 KU02
    `--S. zaheri E-KO07

*Type species of generic name indicated

REFERENCES

[CF77] Canestrini, G., & F. Fanzago. 1877. Intorno agli Acari Italiani. Atti del Reale Istituto Veneto di Scienze, Lettere ed Arti, Serie 5, 4: 69–208, pls 2–7.

[E-KO07] El-Kammah, K. M., & L. M. I. Oyoun. 2007. Taxonomic records of mite species associated with animal and poultry farms in the Nile delta, vally and N. Sinai Egypt. In: Morales-Malacara, J. B., V. M. Behan-Pelletier, E. Ueckermann, T. M. Pérez, E. G. Estrada-Venegas & M. Badii (eds) Acarology XI: Proceedings of the International Congress pp. 223–232. Instituto de Biología and Faculdad de Ciencias, Universidad Nacional Autónoma de México, Sociedad Latinoamericana de Acarología: México.

[G44] Grandjean, F. 1944. Observations sur les acariens de la famille des Stigmaeidae. Archives des Sciences Physiques et Naturelles, 5me Période 26: 103–131.

[KU02] Khanjani, M., & E. A. Ueckermann. 2002. The stigmaeid mites of Iran (Acari: Stigmaeidae). International Journal of Acarology 28 (4): 317–339.

[SB63] Schweizer, J., & C. Bader. 1963. Die Landmilben der Schweiz (Mittelland, Jura und Alpen): Trombidiformes Reuter, mit 217 Arten und Unterarten und 193 Originalzeichnungen. Denkschriften der Schweizerischen Naturforschenden Gesellschaft [Mémoires de la Société Helvétique des Sciences Naturelles] 84 (2): i–vi, 209–378.

[SS55] Summers, F. M., & E. I. Schlinger. 1955. Mites of the family Caligonellidae (Acarina). Hilgardia 23 (12): 539–561.

[WHE88] Walter, D. E., H. W. Hunt & E. T. Elliott. 1988. Guilds or functional groups? An analysis of predatory arthropods from a shortgrass steppe soil. Pedobiologia 31: 247–260.

[WL09] Walter, D. E., E. E. Lindquist, I. M. Smith, D. R. Cook & G. W. Krantz. 2009. Order Trombidiformes. In: Krantz, G. W., & D. E. Walter (eds) A Manual of Acarology 3^rd ed. pp. 233–420. Texas Tech University Press.