Crossipalpus Smiley, Frost and Gerson 1996

Crossipalpus Smiley, Frost and Gerson, 1996 Type species. Crossipalpus verticillatae Smiley, Frost and Gerson, 1996, by original designation. Diagnosis. All life stages: dorsal opisthosoma with 12 pairs of thinly to broadly lanceolate setae; c 2, d 2, and e 2 present; setae f 2 absent; setae e 2 close to marginal position; setae h 2 similar in size and form to other dorsal setae; palps 5 -segmented, setal formula 0, 0, 0, 1, 3 (1); anterior margin of prodorsum smoothly rounded, without projections/notches; ventral plate absent; 2 pairs of pseudanal setae (ps 1���2) on weakly developed anal plates. Adult female: anterior margin of prodorsum without projections, smoothly rounded, completely concealing the gnathosoma; genital plate membranous, weakly developed; metapodal plates not developed; coxae I without 1 c; trochanters I���IV 1 - 1 -2- 1; femora I���IV 3 - 3 - 2 - 1; genua I���IV 1 - 1 -0-0 (ge I���II with either l������ or d present); tibiae I���IV 4 - 4 - 3 - 3; tarsi I���IV with or without tc������. Setae v ��� added to tr IV in adult; v ��� added to tr I���III in deutonymph; l ��� added in protonymph. Solenidia of male much thicker and longer than those of female. Species. Four species: Cr. gersoni, Cr. muellerianae, Cr. raveni, Cr. verticillatae. Hosts and distribution. Casuarinaceae, Australia. Remarks. All known Crossipalpus species have the setal formula for genua I���IV 1 - 1 -0-0. In Cr. muellerianae and Cr. verticillatae, the seta present on ge I���II is l������, but in the two new species, Cr. gersoni and Cr. raveni, the seta is d. This difference is an example of how setal counts alone can conceal useful information that only chaetotaxy can present.
Published as part of Beard, Jennifer J., Seeman, Owen D. & Bauchan, Gary R., 2014, Tenuipalpidae (Acari: Trombidiformes) from Casuarinaceae (Fagales), pp. 1-157 in Zootaxa 3778 (1) on page 22, DOI: 10.11646/zootaxa.3778.1.1, http://zenodo.org/record/251337
{"references":["Smiley, R. L., Frost, W. E. & Gerson, U. (1996) A revision of the subfamily Tegopalpinae, with the description of two new genera and five new species (Acari: Tenuipalpidae). International Journal of Acarology, 22 (3), 167 - 180. http: // dx. doi. org / 10.1080 / 01647959608684092"]}