Ericotrombidium cosmetopode ( Vercammen-Grandjean & Langston, 1971 )

K, Sirikamon Koosakulnirand, RajasegaranK, Praveena, Alkathiry K, Hadil A., ChaisiriK, Kittipong, RoundK, Philip D., Eiamampai, Krairat, Ahmad KhusainiK, Mohd K. S., RamjiK, Mohamad Fizl Sidq, AbubakarK, Sazaly, Ya’cobK, Zubaidah, Stekolnikov K, Alexandr A. & Makepeace K, Benjamin L., 2023, On the taxonomy of chigger mites (Acariformes: Trombiculidae) parasitizing birds in Thailand and Malaysia, with the description of a new species, Acarologia 63 (4), pp. 1109-1138 : 1129

Ericotrombidium cosmetopode ( Vercammen-Grandjean & Langston, 1971)

( Fig. 6 )

Diagnosis — SIF = 7BS-B-3-2111.0000; fPp = B/B/NNB; fCx = 1.1.1; fSt = 2.2; PL> AL

> AM (PL> AM ≥ AL); fD = 2H-8-6-6-4-2 (8-6-6-4-4-2); DS = 28 – 32; V = 27 – 28; NDV

= 55 – 60; Ip = 666 – 770; dorsal idiosomal setae tetrapectinate, with thin barbs; scutum with large puncta, with bilobate posterior margin; SB at level of PL; sensilla with cilia in medial part and ca. 13 branches in distal third; 1 fdistal to S 1, f 2 distal to S 2 ; S 2 thin, pointed. Standard measurements are given in Table 8.

Distribution and hosts — This species was described from free larvae found in a ground hole, Malaysia, Selangor State, Ulu Langat Forest Reserve. Pellorneum ruficeps is the first known host of this species.

Material examined — One larva ( ZIN 17937) ex Pellorneum ruficeps , MALAYSIA, Pahang State, Fraser’s Hill, 3.725630°N, 101.716365°E, 22 October 2021, coll. P. Rajasegaran.

Remarks — As compared with the original description, our specimen has longer legs and a slightly reduced number of idiosomal setae ( Table 8).

Figures

Figure 6 Ericotrombidium cosmetopode(Vercammen-Grandjean & Langston, 1971), specimen ZIN 17937: A –anterior dorsal aspect of idiosoma; B – scutum. Scale bars: 50 μm.