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Common names: Bamboo spider mite
Probability of Encounter: Very high
Quarantine importance: High. About 140 species of Schizotetranychus have been described and many of these feed on grasses, especially bamboos, and other monocots. Figs, a variety of trees, and some herbs are also host to species of the genus.
Schizotetranychus andropogoni (Hirst) attacks rice, sorghum, sugarcane and other grasses. It is not currently reported from the USA, but is in Mexico, Pakistan, India, Thailand, and some countries of the former Soviet Union.
Schizotetranychus aspargai (Oudemans) is a pest of asparagus, pineapple, and some acacias in Australia, Europe, the Middle East, South Africa, and the USA including Hawaii and Puerto Rico.
Schizotetranychus baltazari Rimando attacks citrus, some ornamental shrubs, and yams and is currently known only from India, Southeast Asia, and the Philippines.
Schizotetranychus celarius (Banks) attacks several genera of bamboo, rice, sugarcane, other grasses, and figs. It is present in the USA including Hawaii and also found in Australia, Asia including Japan, and Europe.
With 2 pair of paranal setae (h2-3) and 2 pairs of anal setae.
Empodium split distally into 2 claws.
Tarsus I with 2 pairs of closely associated duplex setae.
Opisthosoma with 10 pairs of 'dorsal' setae (c1-3, d1-2, e1-2, f1-2, h1).
Similar taxa. Several generic-level taxa similar to Schizotetranychus in having split claw-like empodia have been recently described from bamboos (e.g. Yunonychus, Yezonychus) based on the absence of an opisthosomal setal pair (i.e. 9 vs 10 pairs in Schizotetranychus); however, the identity of these setae is difficult to determine. Trilobonychus from Nothofagus in New Zealand has 3-pronged claw-like empodia and 9 pairs of opisthonotal setae (f2 absent). Other Tetranychinae lack the split empodial claw.
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