Ummidia zilchi Kraus, 1955

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 zilchi Kraus, 1955 Fig. 50 , Map 5

Ummidia zilchi Kraus, 1955b: 7; Type Material. HOLOTYPE 1♂ (8569_1) from San Salvador, El Salvador, 13.6921 -89.219 6, 700 m a.s.l., A. Zilch, 5.viii.1957, deposited in Senckenberg Museum, examined. Three paratypes (8568, 8570, 8571) associated with specimen. Specimens 8570 and 8571 are immatures and 8568 is misidentified (see Ummidia hondurena sp. nov.)

Ummidia zilchi Bücherl, 1957: 382.

Diagnosis.

Ummidia zilchi males can be distinguished from all geographically proximate species except U. huascazaloya by the palpal tibia being elongate (3.5 ×long as wide) and a relatively short embolus (half the length of the palpal tibia) with an even curve. Males can be differentiated from all geographically proximate species except U. zebrina and U. carlosviquezi by having a defined comb of spinules on the retrolateral face of tarsus IV. Males can be further differentiated from U. huascazaloya , U. anaya , U. cuicatec , U. brandicarlileae , U. zebrina , U. yojoa , and U. varablanca by having relatively more spines on the prolateral (19 vs 0-11) and retrolateral (36 vs 1-17) faces of tibia I.

Description of male holotype.

Specimen preparation and condition. Specimen preserved in 80% EtOH. Left palp in vial. Right leg IV Mt-Tr missing. General coloration. Carapace and checlicerae dark reddish brown 2.5YR 2.5/4, legs dark yellowish brown 10YR 4/6. Abdomen dark reddish gray 5YR 5/2. Cephalothorax. Carapace 5.47 long, 5.04 wide. Pars cephalica 3.55 long. Foveal groove procurved, 0.38 long, 0.83 wide. Tubercle high and well defined. AER procurved. PER straight. Eye group 0.68 long, 1.26 wide, AME 0.35, PME 0.22, ALE 0.44, PLE 0.24. Sternum moderately setose, STRl 3.25, STRw 2.93. Chelicerae with anterior tooth row comprising eight teeth, posterior margin with five teeth. Palpal endites with 23 relatively small cuspules over proximal half of endite face, lacking distal endite cuspules, ENDw 1.34, ENDl 2.29. Labium with three relatively small cuspules, LBw 1.19, LBl 0.64. Rastellum with many spines. Abdomen setose with pale speckles. Legs. F1 5.13; F1w 1.1; P1 2.64; Ti1 3.26; Mt1 2.27; Tr1 1.33; F3 3.41; F3w 3.41; P3 1.95; Ti3 2.06; Sd3 1.43; Mt3 2.05; Tr3 1.8; F4 4.61; F4w 1.27; P4 2.08; Ti4 3.01; Mt4 3.34; Tr4 1.68. Retrolateral face of tarsus IV with defined comb over length of tarsus. Leg I spination pattern: TSp 0, TSpv 11, TSrd 0, TSr 2, TSrv 36, MtSp 9, MtSr 17, TrSp 7, TrSr 10. Pedipalps. PTl 3.58, PTw 1.06, Bl 1.8. Embolus very short with even curve.

Variation, males

(n = 3). CL 5.47-7.19, 6.22 ± 0.51; CW 5.04-6.88, 5.84 ± 0.55; Cap 3.55-4.64, 3.99 ± 0.33; ENDl 0.68-0.89, 0.77 ± 0.06; ENDw 1.26-1.63, 1.4 ± 0.12; STRl 3.25-3.96, 3.49 ± 0.24; STRw 2.93-3.97, 3.37 ± 0.31; LBl 0.64-0.97, 0.78 ± 0.1; LBw 0.94-1.65, 1.26 ± 0.21; F1 5.13-6.45, 5.69 ± 0.39; F1w 1.1-1.57, 1.29 ± 0.14; P1 2.63-3.23, 2.83 ± 0.2; Ti1 3.26-4.3, 3.78 ± 0.3; Mt1 2.26-2.63, 2.38 ± 0.12; Tr1 1.17-1.33, 1.27 ± 0.05; F3 3.41-4.53, 3.87 ± 0.34; F3w 1.36-1.83, 1.59 ± 0.14; P3 1.95-2.56, 2.23 ± 0.18; Ti3 2.06-2.56, 2.28 ± 0.15; Mt3 2.04-2.62, 2.24 ± 0.19; Tr3 1.59-1.8, 1.72 ± 0.07; F4 4.61-6.16, 5.25 ± 0.46; F4w 1.27-1.76, 1.45 ± 0.16; P4 2.08-2.71, 2.37 ± 0.18; Ti4 3.01-3.99, 3.47 ± 0.28; Mt4 3.34-4.15, 3.75 ± 0.23; Tr4 1.68-2.15, 1.92 ± 0.14; TSp 9-11, 10 ± 0.58; TSpv 6-11, 8.33 ± 1.45; TSr 0-2, 1.33 ± 0.67; TSrv 22-36, 29 ± 4.04; PTl 3.46-4.16, 3.73 ± 0.22; PTw 1.06-1.3, 1.15 ± 0.07; BL 1.8-2.13, 1.92 ± 0.11.

Females.

Unknown.

Material examined.

Belize: La Democracia: Tropical Education Center , 17.36 -88.537 1, 30 m a.s.l. (BMEA101782, 22-25.vi.2019, 1♂, JE Bond, BME) Mexico: Oaxaca: Palomares , 17.1392 -95.0606 6, 113 m a.s.l. (UMM0167, vii.1909, 1♂, AMNH) ; El Salvador: San Salvador: San Salvador 13.6921 -89.219 6, 700 m a.s.l. (8569/1, 5.viii.1957, 1♂, A Zilch, SMF) .

Figures

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

Figure 50. Ummidia zilchi (Kraus, 1955) male holotype (SENCK 8569 _ 1) from San Salvador, El Salvador. 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).