Combined description (morphology with DNA barcode data) of a new quill mite Torotrogla paenae n. sp. (Acariformes: Syringophilidae) parasitising the Kalahari scrub-robin Cercotrichas paena (Smith) (Passeriformes: Muscicapidae) in Namibia

A new quill mite species Torotrogla paenae n. sp. (Acariformes: Syringophilidae) parasitising the Kalahari scrub-robin Cercotrichas paena (Smith) (Passeriformes: Muscicapidae) in Namibia is described based on the external morphology and DNA barcode data (the mitochondrial cytochrome c oxidase subunit 1 sequences, cox1). Females of T. paenae n. sp. morphologically differ from the most similar species T. lusciniae Skoracki, 2004 by the total body length (780–830 vs 645–715 µm in T. lusciniae) and the presence of hysteronotal shields (vs absence), apunctate propodonotal and pygidial shields (vs punctate), apunctate coxal fields (vs punctate), the fan-like setae p’ and p” of legs III–IV provided with c.10 tines (vs 14–15) and the length of setae si (140–180 vs 190–210 µm) and se (160–185 vs 210–225 µm). The male of T. paenae n. sp. morphologically differs from T. lusciniae by the lateral branch of peritremes composed of 4 chambers (vs 7–8 chambers) and lengths of setae ve (45 vs 70–75 µm) and se (120 vs 165 µm).