Cormodesmus hirrutellus Chamberlin, 1923

Alvear, Santiago & Romero-Rincon, Juan, 2024, Contribution to the knowledge of the Colombian Batodesmini (Polydesmida: Chelodesmidae) with the description of a new genus and species, and taxonomic insights on the genus Cormodesmus Chamberlin, 1923, Zootaxa 5523 (5), pp. 553-563 : 559

Cormodesmus hirrutellus Chamberlin, 1923

Figs 6 , 7

Cormodesmus hirrutellus Chamberlin, 1923: 57 , plate 21: figs 145–148, plate 22: fig. 149, (male holotype from Colombia: San Lorenzo, 4500 ft., deposited in MCZ [MCZ:IZ:DIPL-5147]); Jeekel 1971: 255.

Cormodesmus hirsutellus [sic!]: Attems, 1938: 69, figs 80–81; Hoffman 1969: 280.

Diagnosis. As for the genus.

Material examined. COLOMBIA ● 1 ♂; Magdalena, Santa Marta, Cuchilla de San Lorenzo, Vía Minca—La Tagua . (11°05'04.40" N, 74°02'47.29" W), 7 December 2023, L. Reyes & S. Alvear leg., ( MHNUC-MD-0302 ) .

Remarks: C. hirrutellus is easily recognizable by its strongly modified tergites and paranota ( Fig. 6A, C, E ), as well as its highly setose and granulate sternites ( Fig. 6B, D, F ). Ca originates from the posterior rim of the Cx and connects with the telopodite above a basal extension of the Pfe ( Fig. 7A, B ). The PfP is large and rounded, and shields the S and t ( Fig. 7C, D ). The telopodite bears two macrosetae facing ventrad, that are diagnostic for the tribe ( Fig. 7 ). These morphological features strongly support the tribal position of C. hirrutellus within Batodesmini .

Figures

FIGURE 6. Cormodesmus hirrutellus Chamberlin, 1923 (MHNUC-MD-0302). A, C, E. Anterior, middle and posterior parts of body respectively, dorsal views. B, D, F. Anterior, middle and posterior parts of body respectively, ventral views. Scale bar: 2 mm.

FIGURE 7. Cormodesmus hirrutellus Chamberlin, 1923 (MHNUC-MD-0302). A, B. Left gonopod, mesal view. C, D. Lateral view. Abbreviations: ca: cannula, Cx: gonocoxa, Pfe: prefemoral region, PfP: prefemoral process, S: solenomere, t: tibiotarsal branch. Scale bar: 0.5 mm.