Three feather mites (Acari: Sarcoptiformes: Astigmata) isolated from Tringa glareola in South Korea Author Min, Yeong-Deok Han and Gi-Sik mingisik@inha.ac.kr text Journal of Species Research 2019 8 2 215 224 journal article 10.12651/JSR.2019.8.2.215 2713-8615 13163412 3. Ingrassia veligera ( Oudemans, 1904 ) ỄDÜHƞḡūűΞή(ṳÿ) ( Figs. 5 , 6 ) Synonyms. Megninia veligera : Oudemans, 1904 , p. 194; Ingrassia veligera : Vasjukova and Mironov, 1991, p. 69-72, fig. 49; Dabert, 2000 , p. 310, fig. 3. Material examined. Korea : 3♂♂ , 2$$, Gyeolseongmyeon , Hongseong-gun , Chungcheongnam-do , 36°31 ʹ 36 ʺ N , 126°33 ʹ 41 ʺ E , May 11, 2016 , collected using vacuum machine from tail feathers of wood sandpiper Tringa glareola by Han Y.-D . Diagnosis. Male : Length 380-395 of idiosoma from anterior end to ends of terminal membranes, width 150-155 at level of humeral shields ( Fig. 5A ). Prodorsal shield ( Fig. 5B ): Narrow longitudinal plate with rounded posterior margin, posterior part extending beyond the level of setae si , length 85-92 along midline, width 17-23. Setae se situated on small sclerites. Scapular shield narrow with broad and blunt posterior part. Hysteronotal shield ( Fig. 5C ): Anterior margin sinuous, with incisions of long and soft tegument at level of setae d2 , length 212-220 from anterior part to base of setae h3 . Sternum ( Fig. 5D ): Epimerites I fused. Inner ends of epimerites IIIa sparated from each other. Genital papillae located in front of the pregential apodeme. Pregential apodeme bow-shaped, width 20-25. Adanal shields small L-shaped, between levels of setae g and ps3 . Female : Length 340-350 of idiosoma from anterior end to bases of setae h3 , width 120-135 at level of setae c2 ( Fig. 6A ). Prodorsal shield ( Fig. 6B ): Shaped as in male, Length 77-80, width 22. Hysteronotal shield ( Fig. 6B, 6D ): Anterior margin rounded, lateral margins slightly sinuous, posterior margin slightly concave, extending beyond the level of setae e2 , length 122-125, width 42-45. Setae d1 and e1 located on the hysteronotal shield, and setae d2 on lateral margins. Epigynum shaped as transverse sclerite, almost straight and thin, width 20 ( Fig. 6C ). Posterior ends of oviporus apodemes not extending to the level of setae 4a . Remarks. Ingrassia veligera was originally described without illustration by Oudemans (1904) based on specimens collected from the lesser yellowlegs ( Tringa flavi­ pes ) in Guyana , then was redescribed by Vasjukova and Mironov (1991) with partial illustrations from several sandpipers of the genus Tringa ( T. glareola , T. nebularia and T. ochropus ). Thereafter, the dorsum part of this species was re-illustrated by Dabert (2000) from T. stagnatilis in Poland . Fig. 5. Ingrassia veligera , male. A, dorsal veiw; B, dorsal view of prodorsal shield; C, dorsal view of hysterosoma; D, ventral viewe of hysterosoma. Scale bars: A, 0.2 mm; B-D, 0.1 mm. Ingrassia veligera can be clearly distinguished from I. slonskiana by the following characteristics: (1) posterior margins of scapular shields are widened and blunted; (2) hysteronotal shield has long desclerotized incisions from anterior margin to level of setae d 2 in males; (3) lengths of setae d2 and e2 are similar in females ( Dabert, 2000 ). The Korean specimens were consistent with the descriptions and illustrations provided by previous mite taxonomists ( Oudemans, 1904 ; Vasjukova and Mironov, 1991; Dabert, 2000 ). Host. Specimens were collected from down feathers of wood sandpiper Tringa glareola . Distribution. Guyana ( Oudemans, 1904 ), Russia (Vasjukova and Mironov, 1991), Poland ( Dabert, 2000 ), Korea (this study). Deposition. NIBR No. NIBRIV0000820675-820679. Molecular characteristics. The COI sequence was obtained from single individual and deposited in GenBank with accession number of MK031706.