. Bulletin of the British Museum (Natural History) Zoology. THE BRITISH DERM AN YSSID AE (ACARI) 251 Chaetotaxy of legs differs from normal pattern in that genu IV has two postero- lateral setae and tibia IV has two antero- and two postero-dorsal setae. All leg setae simple. Coxae bear rows of small denticles ; distal margins of all segments except tarsi serrated ventrally. Length/width (in y) of leg segments : I II III IV genu 207/72 160/102 150/84 192/78 tibia 222/66 168/90 168/72 240/72 tarsus 306/60 240/66 330/66 456/66 Male: Chelicera with segment I, 84 /x; II, 200 /x ; movable digit with
. Bulletin of the British Museum (Natural History) Zoology. THE BRITISH DERM AN YSSID AE (ACARI) 251 Chaetotaxy of legs differs from normal pattern in that genu IV has two postero- lateral setae and tibia IV has two antero- and two postero-dorsal setae. All leg setae simple. Coxae bear rows of small denticles ; distal margins of all segments except tarsi serrated ventrally. Length/width (in y) of leg segments : I II III IV genu 207/72 160/102 150/84 192/78 tibia 222/66 168/90 168/72 240/72 tarsus 306/60 240/66 330/66 456/66 Male: Chelicera with segment I, 84 /x; II, 200 /x ; movable digit with sperma- dactyl, 150 tt; pilus dentilis short, setiform; dorsal seta as in female, but situated a considerable distance distal to the base of the fixed digit (Text-fig. 57D). Four pairs of simple gnathosomal setae with about 105 /x apart ; about 93 /x apart. Deutosternum with 14 transverse rows of denticles (1-3 per row) ; corniculi 57 /x long ; internal malae, tectum and pedipalps as in female. Dorsal shield (1,092 /x x 600 \x) as in female. Tritosternum with spine on each side of base ; with base 60 tx, laciniae 210 /x. Presternal area with small spines on the reticulations. Holoventral shield (876 /x x 192 /x) with the usual sternal and metasternal setae and three pairs of pores in the sternal region, and the usual three anal setae. Numerous accessory setae are distributed on the genito-ventral region. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Farn, Alexander E. London : Butterworths
Size: 1875px × 1332px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollection, bookpublisherlondonbutterworths
