Helobdella octatestisaca Lai and Chang, 2009

Tessler, Michael, Siddall, Mark E. & Oceguera-Figueroa, Alejandro, 2018, Leeches from Chiapas, Mexico, with a new species of Erpobdella (Hirudinida: Erpobdellidae), American Museum Novitates 2018 (3895), pp. 1-1 : 1-

Helobdella octatestisaca Lai and Chang, 2009

Figures 14–15

The presence of a chitinous nuchal scute; dorsal and ventral surfaces with inconspicuous papillae; no metameric pigmentation patterns; eyespots in one pair, each shaped somewhat triangularly, almost touching each other is consistent with the description of Helobdella octatestisaca (see Salas-Montiel et al., 2014). Found on the underside of submerged rocks and plants. Nonblood-feeding (liquidosomatophagous). New state record; new locality records: Bosque Azul, Lagunas de Montebello (16°07′37.83″N, 91°43′53.68″W; 1462 m) 30 specimens collected January 25, 2016, by M. Tessler, J. Arroyave, S. Contreras, and A. Oceguera-Figueroa ( CNI 27 ); Osumacinta Dam (16°57′47.5″N, 93°06′21.82″W; 207 m) 16 specimens collected January 24, 2016, by M. Tessler, J. Arroyave, S. Contreras, and A. Oceguera-Figueroa ( CNI 28 ). GenBank cox1 barcode sequence accessions: MG 821611 , MG 821612 , MG 821613 , and MG 821614 .

Figures

FIGURES 12–15. Rhynchobdellida from Chiapas, Mexico. Helobdella elongata: 12. dorsal view, 13. ventral view. Helobdella octatestisaca: 14. dorsal view, 15. ventral view.