Tonalteca adelaida Cruz-López, 2025

Tonalteca adelaida Cruz-López sp. n.

(Figures 1–4)

Etymology

The name Adelaida, of Germanic origin, means ‘of noble appearance’ or ‘noble lineage’. It is used a feminine noun in apposition, honouring Adelaida López García, the mother of the author.

Type data

Male holotype (CARCIB-Op-H-0002), MEXICO: Puebla, Cuetzalan del Progreso, Atepolihui cave ( 20.014706 97.54527 °W, alt. 1144 m), 23 September 2016, Cols GoogleMaps . A. Valdez, J. Arreguín, M. Cortez, A. Juárez and J.

One male paratype and one immature paratype (CARCIB-Op-Pa-0002), MEXICO: Puebla, Cuetzalan Progreso, El Laberinto cave ( 20.197°N, 97.5422°W, alt. 1040 m), 8 May 2016, Cols GoogleMaps . A. Valdez, J. E. Briones and M. Cortez.

Diagnosis

Tonalteca adelaida is readily distinguished from T. spinooculorum by the following combination characters: eyeless, spine of the ocularium bifid, dorsal armature on mesotergal area V, free

I and II, all of them with a central acute spine. Margin of the flimsy lamina is bilobed, with the dentate.

Description

Male holotype CARCIB-Op-H-0002

Measurements. Scutum length: 4.0 mm, scutum width: 2.64 mm, femur I: 4.67 mm, femur II: 8.22 mm

III: 6.51 mm, femur IV: 9.10 mm.

Dorsum. Scutum type zeta (ζ) according to the terminology proposed by Kury and Medrano Mid-bulge softly rounded, covering mesotergal areas I, II and III; constrictions 1 and 2 shallow softly rounded and slightly divergent . Ocularium at the frontal margin of prosoma, covered several small spines; conical, very high and with apical spine bifid, with no eyes. Dorsum with a transversal row of small disperse spines on each mesotergal area, on the posterior scutum (scutal area V), with a median large spine, pointing forward. Mesotergal sulci wide,

HISTORY view; (c) chelicerae, frontal view; (d) pedipalp, ectal view; (e) same, ventral view. Scale bars: a, b = 2 mm; c–e Arrows in (b) indicate dorsal armature; T1–T 3 in (d) and (e) indicate major spiniform setiferous tubercles on tibia

Venter . Coxae I, II and III with a transversal row of very large setiferous tubercles, each tubercle with apical seta. Coxa IV covered with small spiniform tubercles. All coxae of similar width, coxae IV larger others. Genital operculum semicircular, located between coxae IV.

Chelicerae. Basichelicerite elongated, bulla poorly marked; whole dorsal surface of this segment is with many small spiniform tubercles. Cheliceral hand swollen, dorsally elevated and rounded, covered with a few wide spiniform tubercles. Fixed finger with a small basal tooth, after this towards apex, with a rounded concavity that fits with the basal blunt tooth of the movable finger; four teeth in the middle of the finger. Movable finger with a large basal blunt tooth, with five teeth covering Pedipalps. Armate, all segments elongate, femur slightly compressed laterally. Trochanter with a long spiniform setiferous tubercle. Femur dorsally covered with many small spiniform tubercles; with a basalmost large setiferous tubercle, similar in size to the one on trochanter, with two ventral spiniform tubercles, tubercles of the ectal row of median size, larger than the others on the mesal row with a mesal setiferous tubercle. Tibia with the typical spiniform setiferous tubercles T1–T3 on both between the T1 and T2, there is an additional small setiferous tubercle; T2 and T3 on both sides near other. Tarsus with three large setiferous tubercles. Tarsal claw slightly shorter than the tarsus.

Legs. All segments elongated, covered with small spiniform tubercles throughout, not forming

HISTORY

Genitalia. Pars distalis of penis slightly compressed laterally, flimsy lamina short and slim, forming of 90° with respect to the rest of par distalis. Margin of the flimsy lamina with two apical central external apices dentate. Follis short, with dorsal rounded lobe. Penis setal Stygnopsis pattern, with three of macrosetae C on sides of pars distalis, below of the base of follis. One pair of macrosetae A in the penis, located laterodorsally. With two or three pairs of macrosetae B, just at the base of pars distalis, either dorsally or ventrally, but never laterally. Two pairs of small macrosetae D lateral to base of

Female. Unknown.