| abstract | The present paper gives descriptons of three new species of chigger mites parasitic on rodents and insectivores from Yunnan, China. All type materials are deposited in the Control and Research Institute of Epidemic Diseases of Yunnan Province.
Herpetacarus (Herpetacarus) tengchongensis, sp. nov. (figs. 1-4)
Idiosoma elongated oval, measuring 447-643µ in length and 272—454µ in greatest width. Galeala branched, formula of palpal setation B-B-BBB+7B.S, palpal claw 3-forked. Scutum with anterior margin bisinuate, posterior margin rounded. Sensillae racket in shape. AL>PL>AM. Eyes 2+2. Dorsal setae 52-56 in number, arranged 2-8-8(9)-3(4)-10-9(10)-6-4(5)-2. Sternal setae 2 pairs. Ventral setae 84—87 in number. Legs with solenidons as figured. Measurements of holotype: AW=67,PW=83, SB=29, ASB=40, PSB=25, SD=65, AP=40, AM=65, AL=90, PL=85, Sn=35×17, HS=80, Ip=971.
Leptotrombidium (Leptotrombidium) yunnanensis, sp. nov. (figs. 5-9)
Body oval, length 284—584µ, width 208—441µ. Galeala branched, formula of palpal setation N-N-NNN+7B, palpal claw 3-forked. Scutum with biconcave anterior margin and biconvex posterior margin. SB behind line of PLs. Sensillae with fine barbs along distal 2/3 and sparse serrations on proximal 1/3 of stem. Eyes 2+2. Dorsal setae 56-67 in number, irregularly arranged: 4-13(14,16,15)......, in holotype 4-13-13-4-15-10-2=61. Ventral setae 52-66 in number. Sternal setae 2 pairs. Legs with solenidions as figured. Measurements: AW=84, PW=102, SB=44, ASB=27, PSB=18, SD=45, AP=22, AM=75, AL=50, PL=67, Sn=82, HS=67, Ip=763.
Gahrliepia (Gahrliepia) meridionalis, sp. nov. (figs. 10—13)
Body oval, measuring 284—584µ in length and 208-441µ in greatest width. Formula of palpal setation B-B-NNb+4B, palpal claw 3-forked. Galeala branched, Scutum elongate hexagonal in shape, with micropunctations and 6-7 PPL. Sensillae fusiform. Dorsal setae 36—47 in number, irregularly arranged: 2-4(5,6,7)......, in holotype 2-4-7-8-6-4-4-2-2=39. Ventral setae 50-56 in number. Sternal setae 2 pairs. Legs with solenidions as figured. Measurements: AW=44, PW=75, SB=46, ASB=25, PSB=125, SD=150, AP=44, AL=46, PL=50, Sn=43×14, HS=48, IP=733. |