Ummidia zebrina (F.O. Pickard-Cambridge, 1897)

Godwin, Rebecca L. & Bond, Jason E., 2021, Taxonomic revision of the New World members of the trapdoor spider genus Ummidia Thorell (Araneae, Mygalomorphae, Halonoproctidae), ZooKeys 1027, pp. 1-165 : 1

Ummidia zebrina (F.O. Pickard-Cambridge, 1897) Fig. 47 , Map 5

Pachylomerus zebrinus F. O. Pickard-Cambridge, 1897: 9; male holotype (NHMUK1249) from Guatemala, 15.2812 -90.3420 9, 1836 m a.s.l., coll. FD Godman 1898, deposited in NHMUK, examined.

Ummidia zebrina Ibarra-Núñez et al., 2011: 1186.

Diagnosis.

Ummidia zebrina can be distinguished from all other species by the presence of pale horizontal bands on the abdomen. Males can be differentiated from all geographically proximate species by having a single spine on tibia I located on the retroventral face of the article and no spines on metatarsus or tarsus I. Males can be further distinguished from all other species by having the embolus distinctly sigmoid, having a strong S shape.

Description of male holotype.

Specimen preparation and condition. Specimen preserved in 80% EtOH. Right leg II Ti-Tr removed, in vial with specimen. General coloration. Carapace and chelicerae very dusky red 10R 2.5/2, legs yellowish red 5YR 4/6. Abdomen very dark brown 7.5YR 2.5/3. Cephalothorax. Carapace 4.34 long, 4.35 wide. Pars cephalica 2.9 long. Foveal groove procurved, 0.37 long, 0.91 wide. Tubercle moderate. AER procurved. PER straight. Eye group 0.69 long, 1.17 wide, AME 0.29, PME 0.25, ALE 0.41, PLE 0.31. Sternum moderately setose, STRl 2.74, STRw 2.44. Chelicerae with anterior tooth row comprising four teeth, posterior margin with six teeth. Palpal endites with eleven cuspules spread over proximal half of endite face, lacking distal endite cuspules, ENDw 0.97, ENDl 1.86. Labium with six cuspules, LBw 1, LBl 0.65. Rastellum with many spines. Abdomen setose. Legs. F1 3.88; F1w 0.95; P1 2.04; Ti1 2.54; Mt1 1.74; Tr1 1.04; F3 3.01; F3w 1.15; P3 1.54; Ti3 1.59; Sd3 1.07; Mt3 1.59; Tr3 1.25; F4 3.9; F4w 1.17; P4 1.94; Ti4 2.46; Mt4 2.56; Tr4 1.42. Retrolateral face of tarsus IV with defined comb over length of tarsus. Leg I spination pattern: TSp 0, TSpv 0, TSrd 0, TSr 0, TSrv 1, MtSp 0, MtSr 0, TrSp 0, TrSr 0. Pedipalps. PTl 2.75, PTw 0.82, Bl 2.2. Embolus long, strongly sinuous, bulb relatively small.

Variation, males

(n = 2). CL 4.3-4.34, 4.32 ± 0.02; CW 3.87-4.35, 4.11 ± 0.24; Cap 2.83-2.9, 2.86 ± 0.04; ENDl 0.53-1.86, 1.19 ± 0.67; ENDw 0.95-0.97, 0.96 ± 0.01; STRl 2.71-2.74, 2.72 ± 0.01; STRw 2.09-2.44, 2.27 ± 0.17; LBl 0.51-0.65, 0.58 ± 0.07; LBw 0.8-1, 0.9 ± 0.1; F1 3.65-3.88, 3.76 ± 0.11; F1w 0.95-0.99, 0.97 ± 0.02; P1 1.78-2.04, 1.91 ± 0.13; Ti1 2.17-2.54, 2.35 ± 0.18; Mt1 1.41-1.74, 1.57 ± 0.16; Tr1 0.86-1.04, 0.95 ± 0.09; F3 2.68-3.01, 2.84 ± 0.16; F3w 1.06-1.15, 1.1 ± 0.05; P3 1.38-1.54, 1.46 ± 0.08; Ti3 1.42-1.59, 1.5 ± 0.09; Mt3 1.31-1.59, 1.45 ± 0.14; Tr3 1.12-1.25, 1.19 ± 0.07; F4 3.39-3.9, 3.64 ± 0.25; F4w 1.1-1.17, 1.14 ± 0.04; P4 1.62-1.94, 1.78 ± 0.16; Ti4 2.21-2.46, 2.33 ± 0.13; Mt4 2.02-2.56, 2.29 ± 0.27; Tr4 1.12-1.42, 1.27 ± 0.15; TSp 0-0, 0 ± 0; TSpv 0-0, 0 ± 0; TSr 0-0, 0 ± 0; TSrv 1-1, 1 ± 0; PTl 1.98-2.75, 2.36 ± 0.39; PTw 0.79-0.82, 0.8 ± 0.01; BL 1.98-2.2, 2.09 ± 0.11.

Females.

Unknown.

Material examined.

Guatemala: 15.2812 -90.3420 9, 1836m (NHMUK1249, 1898, 1♂, FD Godman, NHMUK); Jalapa: Mataquescuintla, El Carrizal, 14.6665 -90.0998 4, 1741m (UMM0516, 1.x.1982, 1imm, Fend-Renkes, AMNH) ; Mexico: Chiapas: Canon del Sumidero National Park , 16.859 -93.0921 7, 1000m (UMM0686, 1.vi.1990, 1♂, H Howden, A Howden, AMNH) .

Figures

Map 5. Locality records for southern Mexico and Central American species.

Figure 47. Ummidia zebrina (F. O. Pickard-Cambridge, 1897) male holotype (NHMUK 1249) from Guatemala. A retrolateral aspect, leg I B prolateral aspect, leg I C line drawings, leg I retrolateral and prolateral aspects D retrolateral aspect, pedipalp E habitus illustration. Scale bars: 1.0 mm (A-B), 4.0 mm (E).