Typical papular urticaria. In this case, in response to flea bites.
Third instar larva of Dermatobia hominis (the human botfly). Note the rows of backward‐pointing spines.
Ctenocephalides felis , the cat flea.
Pediculus capitis , the head louse.
Pthirus pubis , the crab louse.
The life cycle of the bedbug. (From Bernadeschi et al . 2013 [ ]. Source and copyright holder: BMJ Publishing Group Ltd.)
Lytta vesicatoria on an ash tree, the best known of the blister beetles. (Courtesy of Dr M. Cornet, Nice, France.)
Ixodidae: hard tick. The term ‘hard’ refers to the dorsal chitinous shield or scutum. The mouthparts (capitulum) of ixodid ticks project forwards and ...
Ixodes ricinus , the sheep tick (engorged female). (a) Dorsal view. (b) Ventral view.
Scabies: clinical variants. (a) Scabies in an infant. Localization on the sole is not atypical in this form of scabies, nor is involvement of the face...
(a, b) Abdominal lesions in cheyletiellosis.
Scolopendra cingulata Latreille 1829, the most common scolopendromorph species in the Mediterranean area. (Courtesy of Dr Botterman and Dr Melhem, N...
Bullous lesions in response to arthropod bites. (Courtesy of Dr F.A. Ive, Durham, UK.)
Furuncle‐like lesion produced by Dermatobia hominis . The tail of the larva is visible in the centre of the lesion.
Tungiasis, showing a characteristic lesion on the sole of the foot. (Courtesy of Dr N.H. Cox, Cumberland Infirmary, Carlisle, UK.)
(a) Head louse eggs cemented to a hair shaft. (b) Scanning electron micrograph of the operculum on a head louse egg.
Crab louse clinging to hairs on the abdomen.
Bedbug adult (5–7 mm): Cimex lectularius .
Thaumetopoea pityocampa. (Courtesy of Dr M. Dutheil, Nice, France.)
Argasid: soft tick. The term soft refers to the absence of scutum. The mouthparts (capitulum) can only be seen from below. (Adapted from Rodhain and P...
Morphology of capitulum and genera of Ixodidae hard tick. Within the large family of ixodid ticks, there are several genera of medical importance, inc...
Crusted (Norwegian) scabies of the hand (a) and foot (b, c). (d) Grossly dystrophic nails in crusted scabies. (e) Severe scalp involvement in crusted ...
Cheyletiella yasguri .
Typical heavy scale in the coat of a dog suffering from Cheyletiella infestation.
Scanning electron micrograph of the spines of a Dermatobia hominis larva.
Numerous head louse eggs and empty egg cases.
Crab louse eggs attached to abdominal hair.
Clinical manifestations of bedbug bites: (a) three or four skin lesions are often seen in a ‘breakfast (1), lunch (2), dinner (3)’ distribution or (b)...
Latrodectus tredecimguttatus the female, with the small male on her abdomen. (Courtesy of Dr J.J. Peres, Peillon, France.)
Mouthparts of Ixodes ricinus nymph to show the toothed hypostome (interference contrast microscopy).
Sarcoptes scabiei , the scabies mites. Female with eggs.
Dermanyssus gallinae : comparison in size with the head of a match.
Typical ‘pepper and salt’ appearance of flea eggs and faeces in the debris from a cat's bedding.
Typical distribution of cat or dog flea bites on the legs.
Scanning electron micrograph of a crab louse showing: (a) haustellum with buccal teeth; (b) everted buccal teeth; and (c) the protruded stylet bundle....
Clothing lice and eggs.
Crab louse eggs on the eyelashes.
To educate patients to the ‘search and destroy’ strategy, general practitioners should show them pictures of (a) bedbugs and their typical hideouts (e...
Buthus occitanus. (Courtesy of Dr J.J. Peres, Peillon, France.)
Scanning electron micrograph of tick mouthparts.
(a) Typical scabies in the finger webs. (b) Pruritic papules and nodules on the penis in scabies infestation. The genitalia should be examined in all ...
The ‘comet sign’.
Demodex folliculorum , the follicle mite.