Copidognathus brachyostomus Viets, 1940

Durucan, Furkan, 2024, Three new records and some juveniles of the genus Copidognathus (Acari, Halacaridae) from Türkiye, Persian Journal of Acarology 13, pp. 771-796 : 772-773

Copidognathus brachyostomus Viets, 1940 ( Figs. 11A–C , Table 4)

Morphology and notes

Idiosomal lengths 275–280. Porose areolae and a pair of costae of dorsal plates with rosette pores. AD with three porose areolae and glp-1 on lateral margin of the plate. OC longer than wide, with two cornea. PD anteriorly ovate. Ds-1 on anterior edge of porose areaolae on AD. Pairs of ds-2 and ds-3 on striated integument. Glp lateral to costae of PD at the level of insertion of leg IV. Ds-4 and ds-5 on PD ( Fig. 11A ). AE with three setae and pair of epimeral pore. PE with one dorsal and two ventral setae. GP large almost rectangular, with a pair of genital acetabula and pair of setae ( Fig. 11B ). Gnathosoma longer than wide (1:0.6) with four segments ( Fig. 11C ). Leg chaetotaxy from trochanter to tarsus (bipectinated setae between parentheses, parambulacral setae and solenidia excluded): leg I: 1, 2, 3, 4, 5(1), 6; leg II: 1, 2, 3, 4, 4(1), 3; leg III: 1, 1, 2, 3, 5(1), 4; leg IV: 0, 1+2 (basifemur + telofemur), 3, 5(1), 3. Each of tibiae I to IV with one bipectinate setae ventromedially and one normal ventral setae. All legs with two lateral claws with accessory process but large pectines (oil immersion) and a small bidentate median claw.

Remarks

Bartsch (2001) reported C. brachyostomus from the Black Sea off the coast of Sinop, Türkiye . Later, Durucan (2019) recorded this species from Antalya ( Finike ) among macroalgae, and from Izmir ( Urla ) among oysters (Pinctata radiata). In the present study, the protonymph stage of the species is reported for the first time from Antalya . The external morphological characteristics of the specimens match those previously described from Sinop, Türkiye .

Figures

Figure 11. Line art illustrations of juveniles and larva of Copidognathus species (A–C. C. brachyostomus, PN; D–G. C. cribosoma, PN; H–K. C. humerosus, PN; L–M, C. humerosus, L) – A. Idiosoma, dorsal view; B. Idiosoma, ventral view; C. Gnathosoma, ventral view; D. Idiosoma, dorsal view; E. Idiosoma, ventral view; F. Gnathosoma, ventral view; G. Leg I, medial view; H. Idiosoma, dorsal view; I. Idiosoma, ventral view; J. Gnathosoma, ventral view; K. Tarsus I, medial view; L. Idiosoma, dorsal view; M. Leg III, medial view. Scale bars: 50 µm.