Diamphidaxona

Smith, Ian M. & Cook, David R., 2006, North American species of Diamphidaxona (Acari: Hydrachnida: Hygrobatidae), Zootaxa 1279, pp. 1-44 : 5

Diamphidaxona (sensu stricto)

Diagnosis. Character states of Diamphidaxona . Gnathosoma with rostrum short and not extending beyond insertion of pedipalps ( Figs. 7 , arrow, 12, 22, 29, 41, 53, 58). Pedipalp with segments, especially tibia, relatively long and slender and with ventral spine­like seta on tarsus smooth or bearing one or more denticles ( Figs. 5 , 11 , 20 , 27 , 32 , 39 , 51 , 58 ).

Habitat. As for genus Diamphidaxona .

Distribution. As for genus Diamphidaxona .

Figures

FIGURES 1 – 7. Diamphidaxona (s. s.) cramerae sp. nov., adults. 1, dorsal shield, female; 2, distal segments of leg IV, male; 3, ventral shield and genital field, male; 4, leg I, female; 5, pedipalp, female; 6, ventral shield and genital field, female; 7, gnathosoma, lateral view, female.

FIGURES 8 – 15. Diamphidaxona (s. s.) imamurai Cook, adults. 8, dorsal shield, male; 9, leg I, male; 10, ventral shield and genital field, male; 11, pedipalp, male; 12, gnathosoma, lateral view, female; 13, dorsal shield, female; 14, distal segments of leg I, male; 15, ventral shield and genital field, female.

FIGURES 16 – 22. Diamphidaxona (s. s.) chihuahua sp. nov., adults. 16, dorsal shield, female; 17, distal segments of leg IV, male; 18, ventral shield and genital field, male; 19, leg I, female; 20, pedipalp, female; 21, ventral shield and genital field, female; 22, gnathosoma, lateral view, female.

FIGURES 23 – 29. Diamphidaxona (s. s.) dolichosoma Cook, adults. 23, dorsal shield, female; 24, leg I, female; 25, ventral shield and genital field, male; 26, distal segments of leg IV, male; 27, pedipalp, female; 28, ventral shield and genital field, female; 29, gnathosoma, lateral view, female.

FIGURES 30 – 34. Diamphidaxona (s. s.) sabinalensis sp. nov., adult male. 30, dorsal shield; 31, ventral shield and genital field; 32, pedipalp; 33, leg I; 34, distal segments of leg IV.

FIGURES 35 – 41. Diamphidaxona (s. s.) chiricahua sp. nov., adults. 35, dorsal shield, female; 36, distal segments of leg IV, female; 37, ventral shield and genital field, male; 38, leg I, female; 39, pedipalp, female; 40, ventral shield and genital field, female; 41, gnathosoma, lateral view, female.

FIGURES 47 – 53. Diamphidaxona (s. s.) parvacetabula sp. nov., adults. 47, dorsal shield, female; 48, distal segments of leg IV, female; 49, ventral shield and genital field, male; 50, leg I, male; 51, pedipalp, male; 52, ventral shield and genital field, female; 53, gnathosoma, lateral view, female.

FIGURES 54 – 61. Diamphidaxona (s. s.) pallida Cook. 54 – 60, adults: 54, dorsal shield, female; 55, leg I, female; 56, ventral shield and genital field, male; 57, pedipalp, male; 58, gnathosoma, lateral view, male; 59, ventral shield and genital field, female; 60, distal segments of leg IV, female; 61, deutonymph, venter of idiosoma with dorsal plates shown by dotted lines.