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. 2017 Nov 14;5:e4023. doi: 10.7717/peerj.4023

Figure 7. Intrinsic muscles in centipede ultimate legs (modified after Verhoeff, 1903).

Figure 7

(A) Ultimate leg of Cryptops hortensis (Scolopendromorpha). According to Verhoeff (1903), only the tarsus is devoid of intrinsic musculature. Consequently, Verhoeff proposed the podomere ‘pretibia’ between femur and tibia. (B) Ultimate leg of Geophilus carpophagus (Geophilomorpha). In this species, Verhoeff (1903) also detected intrinsic muscles in the penultimate podomere. Consequently, he proposed a ‘pretibia’ between femur and tibia. For details see discussion on modifications of ultimate leg podomeres. Abbreviations: bm, indirect muscle (Brückenmuskel); cx, coxa; fe, femur; km, muscles associated with the tendon (Krallenmuskeln); km3, tendon muscle of tibia; kmt, tendon muscle of trochanter; mf, and ms, dorsal and ventral direct muscles; pfe, prefemur; prbm, indirect muscle of prefemur and trochanter; pti, pretibia; ta, tarsus; ten, tendon; ti, tibia; tr, trochanter.