Benlomondia mateo Shear & Marek, 2025

Shear, William A. & Marek, Paul E., 2025, Additions to the family Caseyidae Verhoeff, 1909. V. The new genus Benlomondia and two new species (Diplopoda, Chordeumatida, Striariidea, Caseyoidea), Zootaxa 5659 (3), pp. 400-406 : 404

Benlomondia mateo Shear & Marek , sp. nov.

Figs 9, 10 , 12

Type: Male holotype from La Honda , San Mateo Co., California, 37.320°N, - 122.274°W, elev. ca. 400 ft asl, collected 18 April 1981 by D. Chandler. Parts of the holotype are mounted on SEM stub WS39-2. Holotype deposited in Field Museum of Natural History, Chicago, Illinois ( FMNH).

Etymology. The species name, a noun in apposition, refers to the type locality.

Diagnosis. Distinct from Benlomondia benlomondensis , sp. nov., in the characters given in the description of that species. In addition, the colpocoxites of B. mateo are narrower, and because of the curvature of the coxal processes of legpair 9, the rather more pedunculate telopodites exceed the coxal processes (see Fig. 9 ).

Description. Male holotype. About 4.0 mm long, 0.49 mm wide. Linear eyepatch with three (four?) black ommatidia. Unpigmented. With the characters of the genus; pregonopodal leg modifications and coxae of legpair 10 essentially as described and illustrated for B. benlomondensis , sp. nov., above (legpair 3 in Fig. 10 ). Gonopods in anterior view ( Fig. 12 ) with broad base, margins of angiocoxite (ac, Fig. 12 ) stem irregularly serrate. In posterior view ( Fig. 9 ), tips of angiocoxites flaring, with bifid lateral process, small acute process at base of lateral process. Flaring portion of angiocoxite tips with few fine, unsocketed cuticular filaments (ac, Fig. 9 ). Colpocoxites (cc, Fig. 9 ) weakly sclerotized, long, narrow, pointed. Legpair nine ( Fig. 9 ) with broad coxae (cx9, Fig. 9 ) bearing bladelike, laterally curved processes (cp, Fig. 9 ); gland openings (g, Fig. 9 ) at bases of coxal processes. Telopodites laterally flattened, with distinct peduncle (t9, Fig. 9 ).

Females unknown.

Notes. As with the preceding species, the label simply gives the town of La Honda as the locality, so the coordinates we provide are for the city center, though the specimen was likely collected elsewhere.

Figures

FIGURES 7–10. 7, 8. Benlomondia benlomondensis, sp. nov., paratype male. 7. Legpair 9, posterior view. 8. Right legpair 10, anterior view. 9, 10. Benlomondia mateo, sp. nov., male holotype. 9. Gonopods and legpair 9, posterior view. 10. Legpair 3, anterior view. Abbreviations: ac, angiocoxite; cc, colpocoxite; cl, coxal lobe of leg 3; cp, coxal process; cx3, coxa of leg 3; cx9, coxa of leg 9; cx10, coxa of leg 10; g, gland opening; t3, telopodite of leg 3; t9, telopodite of leg 9; t10, telopodite of leg 10.

FIGURES 11–12. 11. Gonopods of paratype Benlomondia benlomondensis, sp. nov., posterior view. 12. Gonopods of holotype Benlomondia mateo, sp. nov., anterior view.