Calyptomastix Hoffman & Howell, 2012

Enghoff, Henrik, 2022, Mountains of millipedes. The family Odontopygidae in the Eastern Arc Mountains of Tanzania (Diplopoda, Spirostreptida), European Journal of Taxonomy 803, pp. 1-136 : 25

Genus Calyptomastix Hoffman & Howell, 2012

Type species

Odontopyge kakandae Kraus, 1958 (D.R. Congo) , by original designation.

Other included species

Seven, including four new species described here, see Hoffman & Howell (2012).

Diagnosis

Differs from other genera of Prionopetalini by the combination of the elongated basal whorl of the gonopodal torsion (torsotope) and the resultant wide separation of the coxal regions, plus the nearly complete concealment of the solenomere within laminae of the telomere.

Remarks

The four previously known species are distributed in D.R. Congo and Tanzania. One of these, C. kakandae ( Kraus, 1958a) , originally described from D.R. Congo, occurs close to the Eastern Arcs, west of the Tanzanian southern Highlands (Rukwa Region, Sumbawanga District) ( Hoffman & Howell 2012).

The new species here assigned to Calyptomastix share “the elongated basal whorl of the gonopod torsion” (torsotope) and the “nearly complete concealment of the solenomere with laminae of the apical “calyx” (= tarsus [= telomere])”. Hoffman & Howell (2012) did not comment on the limbus of Calyptomastix species; however, the limbuses seen in three of the new species ( Figs 15F , 17D , 21D ) with their triangular marginal lobes are similar to that seen in in type species, C. kakandae (Kraus, 1958) , as well as in two of the three other species assigned to the genus: C. leviceps (Attems, 1909) and C. pardalis ( Gerstäcker, 1873) ( Attems 1909a: fig. 34, 1914: fig. 223; Kraus 1958a: 61). The limbus of C. dorsalis (Carl, 1909) has not been described, and that of C. xystopygoides sp. nov. ( Fig. 19D–E ) escapes comparison because of wear.

Figures

Fig. 15. Calyptomastix ingemanni sp. nov., holotype, ♂ (NHMD 621715). A–E. Right gonopod coxa. A. Anterior view. B. Mesal view. C. Posterior view. D. Lateral view. E. Cucullus. F. Midbody dorsal imbus.Abbreviations:CU = cucullus;fp = fingerlike process; MP=metaplica; mtp =metaplical triangular process; PP =proplica; PPL =proplical lobe. Scale bars: A–D=0.2 mm; E =0.02 mm; F =0.01 mm.

Fig. 17. Calyptomastix vuasu sp. nov., holotype, ♂ (NHMD 621717). A–C. Left gonopod coxa. A. Anterior view. B. Mesal view. C. Posterior view. D. Midbody dorsal limbus. Abbreviations: CU =cucullus; LCS = lateral coxal process; MP=metaplica; mtp = metaplical triangular process; PP= proplica; PPL =proplical lobe. Scale bars: A–C =0.2 mm; D =0.01 mm.

Fig. 21. Calyptomastix zoltani sp. nov., holotype, ♂ (NHMD 621719). A–C. First pair of legs. A.Anterior view. B. Sublateral view. C. Ventral view.D. Midbody dorsal limbus.E–I. Left gonopod coxa. E. Anterior view. F. Posterior view. G. Mesal view. H. Lateral view. I. Subventral view. Abbreviations: APS=mesapical prefemoral setae; CU =cucullus; CXS = coxosternal setae; LPS = lateral prefemoral setae; mpp= mesal proplical process; msp =metaplical spinelike process; si =mesal sinus;ti = transverse impression. Scale bars: A–C, E–I =0.1 mm; D =0.01 mm.

Fig. 19. Calyptomastix xystopygoides sp. nov., holotype, ♂ (NHMD 621718). A–C. First pair of legs. A. Sublateral view. B. Anterior view. C. Ventral view. D. Midbody dorsal limbus (worn). E. Midbody ventrolateral limbus. F–I. Left gonopod coxa. F. Anterior view. G. Anterior-lateral view. H. Posteriormesal view. I. lateral view. Abbreviations: APS =mesapical prefemoral setae; CU = cucullus; cus = cucullar spine; CXS =coxosternal setae; hh =hemisphaerical hump; LCS= lateral coxal spine; LPS =lateral prefemoral setae; MP=metaplica; ms =metazonital striae; PP =proplica, Scale bars: A–C, F–I =0.1 mm; D–E=0.02 mm.