Description of two new species of Stigmaeopsis, Banks 1917 (Acari, Tetranychidae) inhabiting Miscanthus grasses (Poaceae) Author Saito, Y. Research Faculty of Agriculture, Hokkaido University, Sapporo 060 - 8589, Japan. & Research Center of Engineer and Technology of Natural Enemy Resource of Crop Pest in Fujian, Author Sato, Y. Sugadaira Research Station, Mountain Science Center, University of Tsukuba, Ueda, Nagano 386 - 2204, Japan. Author Chittenden, A. R. Research Faculty of Fisheries Sciences, Hokkaido University, Hakodate, 041 - 8611, Japan. Author Lin, J. - Z. Research Center of Engineer and Technology of Natural Enemy Resource of Crop Pest in Fujian, Author Zhang, Y. - X. Research Center of Engineer and Technology of Natural Enemy Resource of Crop Pest in Fujian, & Research Faculty of Agriculture, Hokkaido University, Sapporo 060 - 8589, Japan. text Acarologia 2018 2018-03-15 1917 2 414 429 http://dx.doi.org/10.24349/acarologia/20184250 journal article 10.24349/acarologia/20184250 2107-7207 5391824 B2740172-4F3F-4FB0-8682-FB3E2E92A9B3 Genus Stigmaeopsis Banks Diagnosis — Palp tarsus with six phaneres (projections): conical spinneret, two eupathidia, one solenidion and two tactile setae ( n.b. seta b absent). Propodosoma well demarcated from hysterosoma; opisthonotum with 12 pairs of setae ( c 1-3, d 1-2, e 1-2, f 1-2, h 1-3; n.b. setae h 1 are present, h 3 placed ventrally); setae c 1 widely spaced, in sublateral position close to setae c 2 and c 3; dorsal body setae slender with fine splits, length variable; opisthonotum with distinctive region of dorsocentral longitudinal striae between setae c 1- c 1 and d 1- d 1; two pairs of genital setae ( g 1-2); two pairs of pseudanal setae ( ps 1-2); tarsus I with two pairs of distal, adjacent duplex setae; tarsus II with one pair of duplex setae; empodium split into two claws, male tarsus I with empodium same as female empodium; male aedeagus weakly sigmoid, bending dorsally, without head. Leg setation typically reduced (e.g., genua 5-4-3-2). Remarks — Stigmaeopsis is similar to some species of Schizotetranychus but is distinguished by its distinctive region of mid-dorsal longitudinal striae (though S. meghalayensis shows transverse striae), the loss of the palpal tactile seta b, and conical shape of spinneret.