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Fig. 2 | BMC Evolutionary Biology

Fig. 2

From: The thorax of the cave cricket Troglophilus neglectus: anatomical adaptations in an ancient wingless insect lineage (Orthoptera: Rhaphidophoridae)

Fig. 2

Interior view of the thoracic skeleton of T. neglectus. (a)–(c) Photographs, (d)–(e) Three-dimensional reconstruction of skeletal elements of right half of thorax based on SRμCT-sections. a Lateral view of right body half. White asterisks mark the strongly sclerotized edge between episternum est and its anterior margin amest. b Detail of prothoracic sternopleural region. The blue asterisk marks the tendon of muscle 11 (Idvm19). c Detail of metathoracic sternopleural region. d Inner posterolateral view, terga removed. e Inner posterolateral view, showing sternal and pleural skeletal elements, only. absti1, first abdominal stigma; abt1, first abdominal tergum; afup, anterior furcal process; amest2/3, anterior margin of mes-/metepisternum; cpl, cryptopleura; cx1/2/3, pro-/meso-/metacoxa; cxr3, metacoxal rim; dcv, dorsal cervical sclerite; em3, metepimeron; est1/2/3, pro-/mes-/metepisternum; fu1/2/3, pro-/meso-/metafurca; he, head; lcv, lateral cervical sclerite; lfup, lateral furcal process; ms, median sclerite; nt1/2/3, pro-/meso-/metanotum; ocr, occipital rim; pcj1/2/3, pleurocoxal joint of pro-/meso-/metathorax; pla2/3, meso-/metathoracic pleural arm; plfup, posterolateral furcal process; plr1/2/3, pro-/meso-/metathoracic pleural ridge; psb, pleurosternal bridge; sp1/2, pro-/mesospina; st1/2/3, pro-/meso-/metasternum; sti2/3, meso-/metathoracal stigma; ti1 /2/3, pro-/meso-/metatrochantin. Scale bars: 1 mm

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