Key to species of Sorghothrips (excluding sakagamii, *based on literature) 1. Antennae 8-segmented........................................................................ jonnaphilus -. Antennae 7-segmented (Figs 5, 7), often 6-segmented in male.................................................. 2 2. Abdominal sternites III and IV each with a small pore plate (Fig 8).................................... meishanensis -. Abdominal sternites without pore plate.................................................................... 3 3. Mesosternum without spinula; postocular setae all subequal length and shorter than interocellar setae; male antenna 7-segmented, segment VI not elongate as in female.......................................................... fuscus * -. Mesosternum with spinula; postocular S4 setae longer than remaining setae and subequal length to interocellar setae; male antenna 6-segmented, segment VI elongate, much longer than that of female............................. longistylus *

Published as part of Masumoto, Masami & Okajima, Shûji, 2021, Contributions to the knowledge of Thysanoptera (Insecta) from Japan, pp. 593-596 in Zootaxa 4970 (3) on page 594, DOI: 10.11646/zootaxa.4970.3.11, http://zenodo.org/record/4766676