The megisthanid mites (Mesostigmata: Megisthanidae) of Australia Author Seeman, Owen D. text Zootaxa 2019 2019-02-28 4563 1 1 40 journal article 28158 10.11646/zootaxa.4563.1.1 3e3068c1-c158-4d97-9aec-31fc80551edb 1175-5326 2600858 A44D4C11-ADA1-48A8-9F00-B46BDF7B2A49 Megisthanus thorelli Womersley, 1937 Megisthanus thorelli Womersley, 1937 : 177 . Material examined. In addition to material listed in Seeman (2017) , the following non-type material was examined from non-type localities in Queensland , Australia . Main Range NP, ex Mastachilus quaestionis . 3 females , 1 major male, Box Forest Track, Cunningham’s Gap, 28°02′S , 152°23′E , 18.iv.2012 , H. Urbina, J. Bartlett & O. Seeman, beetle BG- 12-4-18-11 -1-1 (QMS 109455–8). 2 females , 1 major male, Mt Mitchell track, O. Seeman , 11.ii.1996 , beetle #175 (log 1, passalid 1) ( QMS 109459–61 ) . Lamington NP, ex M . quaestionis . 2 females , Box Forest Circuit, 13.ii.1996 , O. Seeman , beetle #321 (log 1, passalid 1) ( QMS 109464–5 ) ; 2 females , same data except beetle #322 (log 2, passalid 2) ( QMS 109462–3 ) ; 1 major male, same data except beetle #332 (log 3, passalid 3) ( QMS 109466 ) . Goomburra State Forest , ex M . australasicus (southern form). 1 female , 1 major male, 27°58′S 153°30′E , 18.iv.2012 , H. Urbina , J. Bartlett & O. Seeman , beetle BG 12-4-18-14-6-1 ( QMS 109474– 5 ) . Jimna State Forest , ex Pharochilus dilatatus . 4 females , 1 major male, 1 minor male, Peter’s Rd , Sunday Ck , 17.iii.1996 , O. Seeman , beetle #201 ( QMS 109467–72 ) . 1 female , 2 km E Sunday Ck , 17.iii.1996 , O. Seeman , beetle #197 ( QMS 109473 ) . All in QM . Imbil , ex passalid. 1 major male, 11.ix.1946 , F.J. Gay (on several slides: J17337 –43, J17356 ). 1 female , same data (on several slides: J17345 –17352). 1 female , same data (two slides: J17317 , J17344 ). Lamington NP, ex passalid. 1 female , 1 major male, H. Womersley , 1949 ( J17329 , J17313 ). All in SAM . Diagnosis. As per Seeman (2017) . Remarks. This common species from southeast Queensland is often found on Mastachilus quaestionis , Australia’s largest passalid beetle, but was also recorded from M . australasicus (the southern form only) and P . dilatatus . Mastachilus quaestionis is found only in rainforests, while M . australasicus tends to be found in sclerophyllous forests; the widespread species P . dilatatus tends to be found in wet sclerophyll to rainforest.