Ummidia richmond, Godwin & Bond, 2021

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 richmond sp. nov. Fig. 15 , Map 3

Type material.

HOLOTYPE: 1 ♂ (UMM159) from 6 mi SSW of Perrine, Miami-Dade County, Florida, United States, 25.605 -80.3566 6, 4 m a.s.l., 16.v.1958, coll. HF Strohecker, AMNH.

Etymology.

The specific epithet is a noun taken in apposition and refers to Richmond, originally a small sawmill camp, then the Richmond Naval Air Base, and now known as the Richmond Tract. It contains the most diverse and second largest remaining fragment of critically endangered pine rockland habitat (the largest is in Everglades National Park but is threatened by rising sea levels and will likely lose the title by the end of the century), the habitat in which the spiders were found.

Diagnosis.

Ummidia richmond can be differentiated from U. audouini by the presence of a comb on the retrolateral face of tarsus IV which is more defined than the comb in U. neilgaimani . Males can further be distinguished from U. gingoteague and U. carabivora by lacking spines on the prolateral aspect of tibia I and from U. rongodwini by lacking a pale dorsal heart patch. It can be differentiated from U. rongodwini by having eyes relatively smaller and more removed from the anterior margin of the carapace. Males disperse from May to June.

Description of male holotype.

Specimen preparation and condition. Specimen preserved in 80% EtOH. Left palp, leg I removed, in vial with specimen. General coloration. Carapace and chelicerae reddish black 2.5YR 2.5/1, legs dark reddish brown 5YR 3/4. Abdomen dark brown 7.5YR 3/2. Cephalothorax. Carapace 7.9 long, 7.63 wide. Pars cephalica 5.32 long. Foveal groove procurved, 0.43 long, 1.36 wide. All eyes on defined moderate tubercle. AER procurved. PER slightly procurved. Eye group 0.87 long, 1.82 wide, AME 0.38, PME 0.2, ALE 0.4, PLE 0.21. Sternum sparsely setose anteriorly with posterior fringe, STRl 4.35, STRw 4.07. Chelicerae with anterior tooth row comprising five teeth, posterior margin with five teeth. Palpal endites with 21 small, non-hastate cuspules over proximal half of endite face, and seven small non-hastate cuspules distally, ENDw 1.73, ENDl 3.0. Labium with six small, non-hastate cuspules, LBw 1.44, LBl 1.16. Rastellum with many small teeth on process. Abdomen setose with dorsal opalescence. Legs. F1 5.58; F1w 1.69; P1 3.11; Ti1 4.02; Mt1 2.66; Tr1 1.45; F3 4.59; F3w 2.07; P3 2.56; Ti3 2.66; Sd3 1.4; Mt3 2.6; Tr3 2.11; F4 5.69; F4w 2.07; P4 2.78; Ti4 3.84; Mt4 3.7; Tr4 1.94. 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 8, MtSp 1, MtSr 7, TrSp 2, TrSr 6. Pedipalps. PTl 3.14, PTw 1.33, Bl 2.69. Embolus evenly curved.

Variation, males

(n = 8). CL 6.15-8.36, 7.29 ± 0.28; CW 5.87-8.39, 7.19 ± 0.33; Cap 4.22-6.16, 5.16 ± 0.25; ENDl 0.66-0.96, 0.81 ± 0.04; ENDw 1.42-1.86, 1.68 ± 0.06; STRl 3.16-4.58, 3.96 ± 0.2; STRw 3.01-4.35, 3.75 ± 0.19; LBl 0.87-1.29, 1.12 ± 0.06; LBw 1.19-1.87, 1.51 ± 0.08; F1 4.65-6.39, 5.46 ± 0.22; F1w 1.42-2.69, 1.75 ± 0.14; P1 2.42-3.26, 2.97 ± 0.12; Ti1 3.28-4.35, 3.78 ± 0.14; Mt1 2.11-2.97, 2.6 ± 0.12; Tr1 1.12-1.51, 1.34 ± 0.05; F3 3.48-4.92, 4.3 ± 0.2; F3w 1.5-2.17, 1.86 ± 0.09; P3 2.08-2.7, 2.46 ± 0.09; Ti3 2.09-2.9, 2.51 ± 0.11; Mt3 1.94-2.84, 2.46 ± 0.12; Tr3 1.5-2.2, 1.87 ± 0.1; F4 4.37-6.29, 5.35 ± 0.26; F4w 1.44-2.07, 1.78 ± 0.09; P4 2.23-3.12, 2.69 ± 0.11; Ti4 3.07-4.27, 3.64 ± 0.15; Mt4 2.82-4.04, 3.52 ± 0.17; Tr4 1.56-2.19, 1.86 ± 0.08; TSp 0-5, 0.88 ± 0.64; TSpv 0-4, 0.5 ± 0.5; TSr 0-0, 0 ± 0; TSrv 2-17, 8.38 ± 1.95; PTl 2.56-3.74, 3.11 ± 0.14; PTw 1.13-1.42, 1.28 ± 0.04; BL 2.27-2.9, 2.62 ± 0.08.

Females.

Unknown.

Material examined.

United States: Florida: Collier Co: Fort Myers , 26.6405 -81.8717 6, 3 m a.s.l. (UMM0160, 3.vi.1958, 1♂, N Causey, AMNH) ; Miami-Dade Co: Everglades National Park, Long Pine Key , 25.4088 -80.6861 5, 1 m a.s.l. (UMM0288, 28.v-8.vi.1986, 1♂, S Peck, J Peck, AMNH); (UMM0429, 8.vi.1926, 1♂, AMNH); Perrine, 25.605 -80.3566 6, 4 m a.s.l. (UMM0159, 16.v.1958, 1♂, HF Strohecker, AMNH); Zoo Miami, 25.602 -80.3983 1, 2 m a.s.l. (AUMS016784, 18.v.2016, 1♂, F Ridgely, BME); (AUMS016785, 1♂, BME) ; Monroe Co: Big Pine Key, Key Deer Refuge, Palm Avenue , 24.699 -81.3761 4, 1 m a.s.l. (UMM0654, 1♂, AMNH) .

Figures

Map 3. Locality records for eastern United States species.

Figure 15. Ummidia richmond sp. nov. male holotype (UMM 159) from Perrine, Florida 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-D), 4.0 mm (E).