Micariascutellata, Booysen & Haddad, 2021

Booysen, Ruan & Haddad, Charles R., 2021, Revision and molecular phylogeny of the spider genus Micaria Westring, 1851 (Araneae: Gnaphosidae) in the Afrotropical Region, Zootaxa 4940 (1), pp. 1-82: 65-67

publication ID

https://doi.org/10.11646/zootaxa.4940.1.1

publication LSID

lsid:zoobank.org:pub:5F073867-F6EA-4222-A190-77F68076BE9C

DOI

http://doi.org/10.5281/zenodo.4580686

persistent identifier

http://treatment.plazi.org/id/03AC3314-9C72-FF84-7CBD-FC0BFE89F947

treatment provided by

Plazi

scientific name

Micariascutellata
status

sp. nov.

Micariascutellata   sp. nov.

Figs 35 View FIGURES 27–36 , 62 View FIGURES 61–64 , 82 View FIGURES 79–85 , 94 View FIGURES 92–95 , 108 View FIGURES 102–108 , 165 – 166 View FIGURES 165–168

Type material. Holotype: ♂, SOUTHAFRICA: KwaZulu–Natal: Ndumo Game Reserve, Nyamiti Pan , base of trees, under logs, hand collecting, 26°53.767’S, 32°16.557’E, leg. C. Haddad & R. Booysen, 7.XII.2018 (NCA 2020/83). GoogleMaps  

Paratypes: SOUTH AFRICA: KwaZulu–Natal: iSimangaliso Wetlands Park, Mission Rocks picnic site, base of grass tussocks, coastal forest, hand collecting, 28°15.879’S, 32°28.922’E, 90 m a.s.l., leg. C. Haddad, 29.XI.2015, 1 ♂ (NCA 2020/84); same data as holotype, 1 ♂ (NCA 2020/83) GoogleMaps   .

Etymology. The species name is combination of the derived Latin adjective latus (broad) and the Latin substantive scutum (shield), referring to the broad scutum of the male that covers most of the anterior half of the abdomen.

Diagnosis. The males of this species are easily recognized by their enlarged scutum. Furthermore, the anterior margin of the carapace of M. scutellata   sp. nov. is rounded ( Fig. 27 View FIGURES 27–36 ), whereas that of M. felix   sp. nov. is truncated ( Fig. 12 View FIGURES 9–17 ). The palpal structures of the two species are very similar, but the distal retrolateral spine’s position in M. scutellata   sp. nov. is closer to the cymbial tip. These features, coupled with the longer basal retrolateral dorsal spine on the palp, would justify M. scutellata   sp. nov. being a separate species. The females are still unknown.

Description. Male (holotype from Nyamiti Pan, Ndumo Game Reserve, South Africa, NCA 2020/83) Measurements: TL 2.13, CL 1.13, CW 0.88, CL:CW 1.28, CLH 0.06, CLH:AME 1.5. Eye diameters and interdistances: ALE 0.48, AME 0.04, PLE 0.04, PME 0.03, AME–AME 0.02, PME–PME 0.04, MOQAW 0.10, MOQPW 0.13, MOQL 0.18. SL 0.57, SW 0.30, AL 0.87, AW 0.44. Leg measurements: Palpal segment lengths: 0.40, 0.22, 0.21, 0.30. Leg I: 0.65, 0.24, 0.56, 0.46, 0.51. II: 0.73, 0.24, 0.49, 0.49, 0.52. III: 0.56, 0.22, 0.43, 0.51, 0.44. IV: 0.98, 0.30, 0.81, 0.84, 0.56. TLoflegs (I–IV): 2.42, 2.47, 2.16, 3.49; leg formula: 4213.

Colouration: carapace dark brown; abdomen dark brown on posterior half and light brown on anterior half; leg Iand II with femora darkened on basal half, legs III–IV uniform in colour; endites, labium and chelicerae similar in colour to carapace ( Fig. 35 View FIGURES 27–36 ). Carapace: smooth in texture; decorated with squamose setae; radiating dark lines present medially; posterior margin straight; fovea absent; anterior margin narrowing slightly from first coxa; PER slightly recurved in dorsal view, AER recurved in anterior view. Chelicerae: decorated with plumose setae. Labium: triangular in shape, rounded at tip, accompanied by cluster of setae. Endites: oblique; anterior margin rounded; cluster of setae present on inner–apical margin; anterior margin darkened. Sternum: shield-like; lighter than carapace; dark patches on lateral edges; broadest between coxa Iand II; posterior margin tapered behind coxa IV; decorated with scattered long aculeate setae. Legs: femora laterally flattened, highest at base, leg Imore pronounced in this fashion; rest of legs normal, thin; decorated with feathery setae ( Fig. 82 View FIGURES 79–85 ). Abdomen: cylindrical in shape; decorated with squamose setae; large scutum present, very broad, covering three–quarters of abdomen width; faint white median line just below scutum; lateral white stripes present on anterior half of abdomen; venter lighter than dorsum, with no markings visible; sigilla not visible. Leg macrosetae: Palps: 1pl, 1pl, 1plv, 1pl, 2plv, 2vt. Leg I: 1pl, 2plv, 2rlv, 1plv, 1rlv. II: 1d. IV: 2vt, 2vt. Scopulate setae on tarsi and metatarsi of legs I–II, and only on tarsi of legs III–IV. Palp: retrolateral tibial apophysis present on retrolateral surface; median apophysis present next to embolus, thin, elongate, curved prolaterally; sperm duct present on retrolateral surface of tegulum, curved close to basal margin of tegulum; embolus broad at base, tip tapered and slightly curved; cymbium pear-shaped, broadest at basal third; two small spines present on tip of cymbium; two large ventral terminal spines distally near tip ( Figs 165, 166 View FIGURES 165–168 ).

Distribution. Micaria scutellata   sp. nov. is only known from two localities in northern KwaZulu-Natal, South Africa ( Map 5 View MAP 5 ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Gnaphosidae

Genus

Micaria