Table 1 List of thoracic muscles of the cave cricket Troglophilus neglectus, specifying origin and insertion of each muscle including noteworthy characteristics and corresponding figure in the article. Furthermore, homologization (Hom*) according to the nomenclature after [36] is provided
Present study | Hom* | Origin | Insertion | Remarks | Figure |
|---|---|---|---|---|---|
Prothorax | |||||
dorsal longitudinal muscles | |||||
m1 | Idlm1 | median region of prophragma | dorsal area of occipital rim (close to m2) | Â | 3B |
m2 | Idlm3 | prophragma (between m1 and m3) | cervical membrane | Â | 3B |
m3 | Idlm5 | anterior dorsomedial pronotal region | lateral region of prophragma | flattened, broad | 3C |
dorsoventral muscles | |||||
m4 | Idvm1 | anterior process of lateral cervical sclerite | dorsolateral area of occipital rim (ventrad of m5) | short, thin | 3B |
m5 | Idvm2+3 | posterior on inner face of lateral cervical sclerite | dorsolateral area of occipital rim | long, slim | 3C |
m6 | Idvm5 | anterior part of pronotum (near m8) | posterior part of lateral cervical sclerites near cervicopleural articulation point | fan-shaped, long thin tendon | 3D |
m7 | Idvm10 | laterodorsal face of profural arm | ventrolateral area of prophragma | Â | 3C |
m8 | Idvm13 | dorsolateral area of pronotum (above cryptopleura) | trochantin | long thin tendon | 3C |
m9 | Idvm16? | lateral region of pronotum (posterior to cryptopleura) | posterolateral procoxal rim (close to m26) | strongly developed | 3D |
m10 | Idvm18 | posterolateral region of pronotum | posterolateral procoxal rim (close to pleurocoxal joint) | Â | 3F |
m11 | Idvm19 | lateral area of pronotum (posterior to cryptopleura, beneath m9) | trochanter (with m16) | strongly developed | 3E |
sternopleural muscles | |||||
m12 | Ispm5? | distal on ventral surface of profurcal arm | ventral part of anterior margin of mesepisternum | slender | 3F |
pleurocoxal muscles | |||||
m13 | Ipcm2 | anterior procoxal rim | posterior face of anterior process of lateral cervical sclerite of opposite site (near cervicooccipital articulation point) | slender | 3C |
m14 | Ipcm4 | anterior margin of cryptopleura | anterior procoxal rim (close to m15) | Â | 3E |
m15 | Ipcm5 | anterodorsal area of cryptopleura | anterior procoxal rim (close to pleurocoxal joint) | Â | 3E |
m16 | Ipcm8 | anterolateral and anterodorsal area of cryptopleura | trochanter (with m11) | largest muscle in prothorax, strongly developed, 2 bundles | 3D |
ventral longitudinal muscles | |||||
m17 | Ivlm3 | dorsal surface of profurcal arm | ventral area of occipital rim | strongly developed | 3B |
m18 | Ivlm4 | posterior margin of profurcal arm | anterolateral process of prospina | Â | 3B |
m19 | Ivlm6 | posterior margin of profurcal arm (beneath m18) | anterior face of dorsolateral process of mesospina | Â | 3C |
m20 | Ivlm7 | proximal at posterior margin of profurcal arm | anterior margin of mesofurcal arm | Â | 3E |
m21 | Ivlm8 | posterior margin of posterolateral process of prospina | dorsal face of mesospina | Â | 3B |
m22 | Ivlm9 | posterolateral process of prospina | anterior margin of mesofurcal arm (proximad of m20 & m37) | Â | 3D |
sternocoxal muscles | |||||
m23 | Iscm1–1 | lateral face of profurcal stem | anteromediad procoxal rim (mediad of m24) |  | 3E, 4A, 4B |
m24 | Iscm1–2 | anterolateral face of profurcal stem | anterior procoxal rim (close to trochantinocoxal articulation point) |  | 3D, 4A, 4B |
m25 | Iscm1–3 | medial face of profurcal stem and adjacent prosternum | anterior procoxal rim (laterad of m24) |  | 3C, 4A, 4B |
m26 | Iscm2 | ventral face of profurcal arm | posterolateral procoxal rim | Â | 4A, 4B |
m27 | Iscm3 | distal on ventral face of profurcal arm | posterior procoxal rim on inner median process | slender | 3E, 4B |
m28 | Iscm5 | tip of anterolateral prospinal process | posterior procoxal rim on inner lateral process | Â | 3F, 4A, 4B |
m29 | Iscm7 | lateral processi of prospina | anterior mesocoxal rim | Â | 3F, 4A, 4B |
Mesothorax | |||||
dorsal longitudinal muscles | |||||
m30 | IIdlm1 | median region of prophragma | median region of mesophragma | several indistinct bundles as thin muscle layer | 3B |
dorsoventral muscles | |||||
m31 | IIdvm4+5 | central region of mesonotum | posterior mesocoxal rim | two independent muscles sharing one insertion point | 3E |
m32 | IIdvm6 | dorsal edge of mesepimeron (ventrad of m31) | posterior mesocoxal rim (close to pleurocoxal joint) | Â | 3F |
m33 | IIdvm7 | anterior region of mesonotum | trochanter (with m41 & m49) | largest muscle in mesothorax | 3C |
tergopleural muscles | |||||
m34 | IItpm10 | epimeral face of mesopleural ridge | lateral region of mesonotum (ventrad of m32) | flattened | 3F |
sternopleural muscles | |||||
m35 | IIspm2 | dorsal surface of mesofurca | ventral surface of mesopleural arm | poorly developed | 3E |
m36 | IIspm6 | posterior mesofurcal process | anterodorsal margin of metepisternum | Â | 3D |
m37 | IIspm? | anterior margin of mesofurcal arm (close to m20) | epimeral face of propleural ridge on cryptopleura | long thin tendon | 3D |
pleurocoxal muscles | |||||
m38 | IIpcm1 | anterior margin of mesepisternum (close to m39) | trochantin | Â | 3F |
m39 | IIpcm2 | inner anterodorsal part of anterior margin of mesepisternum | anterior mesocoxal rim | Â | 3F |
m40 | IIpcm3+4 | episternal face of mesopleural ridge, few fibers from mesopleural arm | anterolateral mesocoxal rim | long, slender | 3F |
m41 | IIpcm5 | episternal face of mesopleural ridge and mesopleural arm | trochanter (with m33 & m49) | Â | 3E |
ventral longitudinal muscles | |||||
m42 | IIvlm3 | posterolateral process of mesofurcal arm | tip of anterior metafurcal process | Â | 3E |
m43 | IIvlm5 | lateral face of posterior mesospinal process | medial face of anterior metafurcal process | Â | 3B |
sternocoxal muscles | |||||
m44 | IIscm1–1 | lateral at mesofurcal stem | anterior mesocoxal rim (close to trochantinocoxal articulation point) |  | 3F, 4A |
m45 | IIscm1–2 | anterior to mesofurcal stem at mesosternum | anterior mesocoxal rim (close to m44) |  | 3E, 4A, 4B |
m46 | IIscm3 | ventral face of mesofurcal arm | mesal mesocoxal rim | Â | 4B |
m47 | IIscm4 | ventral face of mesofurcal arm (posterior to m46 & m49) | lateral mesocoxal rim (close to pleurocoxal joint) | Â | 3F, 4A, 4B |
m48 | IIscm5 | ventrolateral and dorsolateral process of mesospina | posterior mesocoxal rim | Â | 3F, 4A, 4B |
m49 | IIscm6 | ventral face of mesofurcal arm (anterior to m46 & m47) | trochanter (with m33 & m41) | Â | 4B |
m50 | IIscm7 | posterior face of lateral processi of mesospina | anterior metacoxal rim | Â | 3F, 4A, 4B |
Metathorax | |||||
dorsal longitudinal muscles | |||||
m51 | IIIdlm1 | median region of mesophragma | median region of metaphragma | several indistinct bundles as thin musle layer | 3B |
dorsoventral muscles | Â | Â | Â | Â | |
m52 | IIIdvm2 | mesophragme and anterior part of metanotum | trochantin | runs partly behind m56 | 3C |
m53 | IIIdvm4 | anterolateral region of metanotum | posterior metacoxal rim | Â | 3B |
m54 | IIIdvm5 | anterolateral region of metanotum (dorsad of m53) | posterolateral metacoxal rim (close to m65) | Â | 3B |
m55 | IIIdvm6 | osterolateral metacoxal rim (close to pleurocoxal joint) | dorsal epimeral face of metapleura (close to m57) | Â | 3C |
m56 | IIIdvm7 | anterolateral region of metanotum (anterior to m54) | trochanter (with m63 & m68) | largest muscle in metathorax | 3B |
tergopleural muscles | |||||
m57 | IIItpm10 | epimeral face of metapleura (dorsad of m55) | lateral region of metanotum | flattened | 3C |
sternopleural muscles | |||||
m58 | IIIspm2 | dorsal surface of lateral metafurcal process | ventral surface of metapleural arm | strongly developed | 3D |
m59 | IIIspm5 | posterior face of metafurcal stem | intersegmental membrane between metathorax and abdominal pleura | Â | 3B |
pleurocoxal muscles | |||||
m60 | IIIpcm1 | anterior margin of metepisternum | trochantin | Â | 3D |
m61 | IIIpcm2 | inner anterodorsal part of anterior margin of metepisternum (lateral to m60) | anterior metacoxal rim | Â | 3D |
m62 | IIIpcm3+4 | dorsal metepisternum and dorsal episternal face of metapleural ridge, few fibers from metapleural arm | anterior metacoxal rim | well developed | 3D |
m63 | IIIpcm5 | dorsal part of metepisternum (dorsad of m62) | trochanter (with m56 & m68) | Â | 3C |
sternocoxal muscles | |||||
m64 | IIIscm1 | along lateral margin of metasternum | anterior metacoxal rim (close to trochantinocoxal joint) | broad origin | 3D, 4A, 4B |
m65 | IIIscm2 | posteroventral face of metafurcal stem | along inner posterior metacoxal rim | strongly developed, broad insertion | 3C, 4A, 4B |
m66 | IIIscm3 | ventral face of anterior and lateral metafurcal process | inner mesal metacoxal rim | Â | 3E, 4A |
m67 | IIIscm4 | tip of posterolateral metafurcal process | lateral mesocoxal rim (close to pleurocoxal joint) | very thin and short | 3C, 4A, 4B |
m68 | IIIscm6 | distal at lateral metafurcal process | trochanter (with m56 & m63) | Â | 3F, 4B |