Micariadurbana, 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: 44-46

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.4681006

persistent identifier

http://treatment.plazi.org/id/03AC3314-9C19-FFEB-7CBD-FA5EFE32F90D

treatment provided by

Plazi

scientific name

Micariadurbana
status

sp. nov.

Micariadurbana   sp. nov.

Figs 18 – 19 View FIGURES 18–26 , 59 View FIGURES 55–60 , 80 View FIGURES 79–85 , 129 – 132 View FIGURES 129–132

Type material. Holotype: ♀, SOUTH AFRICA: KwaZulu–Natal: Durban, Musgrave , shrubs and grasses in garden, handcollecting, 55 ma.s.l., 29°51.085’S, 31°00.052’E, leg. C. Haddad, 27.XII.2016 (NCA 2019/414). GoogleMaps  

Paratypes: SOUTH AFRICA: KwaZulu–Natal: same data as holotype, 1 ♂ (NCA 2019/414); Tembe Elephant Park, Viewing Tower , base of grass tussocks, hand collecting, 27°02.225’S, 32°24.900’E, leg. C. Haddad, 13.II.2015, 1 ♂ (NCA 2020/82) GoogleMaps   . ZAMBIA: Southern Province: Livingstone, Livingstone Airport nr runway, leaf litter, 17°47.998’S, 25°46.588’E, leg. C. Haddad, J. Parau & F. Jordaan, 1.XII.2006, 2 ♀ (NCA 2007/621) GoogleMaps   .

Etymology. The species name refers to the type locality, Durban in South Africa.

Diagnosis. The genital structure of M. durbana   sp. nov. females closely resembles that of M. chrysis   , but the former species shows thicker copulatory ducts and a flattened anterior hood. The males can be recognised in having a large, tapered embolus, twice the size of the MA, and a bend in the sperm duct just below the embolus.

Description. Female (holotype from Musgrave, Durban, NCA 2019/414): Measurements: TL 2.35, CL 0.90, CW 0.55, CL:CW 1.63, CLH 0.05, CLH:AME 1.5. Eyes: ALE 0.04, AME 0.03, PLE 0.05, PME 0.05, AMEAME 0.01, PME–PME 0.03, MOQAW 0.09, MOQPW 0.13, MOQL 0.14. SL 0.54, SW 0.38, AL 1.20, AW 0.75.

Leg measurements: Palpal segment lengths: 0.30, 0.18, 0.21 0.27. Leg I: 0.60, 0.27, 0.46, 0.41, 0.41. II: 0.54, 0.24, 0.38, 0.44, 0.41. III: 0.44, 0.21, 0.32, 0.38, 0.30. IV: 0.70, 0.27, 0.62, 0.64, 0.46. TLoflegs (I–IV): 2.15, 2.01, 1.65, 2.69; leg formula: 4123.

Colouration: carapace dark brown and golden in colour, with anterior half slightly darker; abdomen dark brown to black with interrupting patterns; femur Idarkened on basal half, rest of legs uniform in colour; labium, endites and chelicerae similar in colour to carapace ( Fig. 18 View FIGURES 18–26 ). Carapace: smooth in texture; decorated with squamose setae; pattern visible medially, dark lines radiating towards eye region and carapace margins; fovea absent; posterior margin straight; anterior margin narrowed slightly from position of coxa I; PER recurved in dorsal view, AER recurved in anterior view. Chelicerae: decorated with plumose setae. Labium: triangular in shape, cluster of setae present on tip. Endites: oblique; constricted slightly just above halfway; cluster of setae present on inner–apical margin; posterior margin rounded. Sternum: shield-like; lighter in colour than carapace; broadest between coxa I and II; posterior margin truncated between coxa IV; dark patches on some of lateral margins. Legs: femora laterally flattened, highest at base, leg Imore pronounced in this fashion; rest of legs normal, thin. Leg macrosetae: Palps: 1pl, 2pl, 1pl, 2plv, 2rlv, 2vt. Leg I: 1do, 1pl, 2plv, 2rlv, 1plv, 1rlv. III: 2vt, 4vt. IV: 4vt. Legs I–IV with two rows of scopulate setae on metatarsi and four rows on tarsi. Abdomen: cylindrical in shape; decorated with squamose setae; dorsal pattern visible as transverse white band medially at constriction; longitudinal line is formed by scutum perpendicular to constriction (usually brown, but may appear lighter in older specimens) ( Fig. 18 View FIGURES 18–26 ); venter similar in colour to dorsum; sigilla not visible. Epigyne: in ventral view, anterior hood continuous, flattened; posterior pockets present medially, laterally curved apically; copulatory opening at curled apex. In dorsal view, copulatory ducts elongate, “C” shaped, curled at apex, close to each other; fertilisation ducts present medially, elongate, laterally curved; spermathecae bean–shaped; longer than broad ( Figs 129–130 View FIGURES 129–132 ).

Male (paratype from Tembe Elephant Park, NCA 2020/82): Measurements: TL 2.05, CL 1.05, CW 0.60, CL:CW 1.75, CLH 0.06, CLH:AME 1.6. Eyes: ALE 0.05, AME 0.04, PLE 0.05, PME 0.06, AME–AME 0.01, PME–PME 0.03, MOQAW 0.10, MOQPW 0.12, MOQL 0.16. SL 0.56, SW 0.37, AL 0.95, AW 0.50. Leg measurements: Palpal segment lengths: 0.40, 0.21, 0.19, 0.29. Leg I: 0.65, 0.25, 0.48, 0.40, 0.49. II: 0.57, 0.22, 0.44, 0.38, 0.46. III: 0.49, 0.19, 0.38, 0.57, 0.37. IV: 0.84, 0.27, 0.67, 0.76, 0.56. TLoflegs (I–IV): 2.27, 2.07, 2.00, 3.10; leg formula: 4123.

Colouration: carapace brown and golden in colour with anterior half slightly darker; abdomen dark brown or black with interrupting patterns; femora Idarkened on posterior half, leg III and IV uniform in colour; labium, endites and chelicerae similar incolour to carapace ( Fig. 19 View FIGURES 18–26 ). Carapace: smooth in texture; decorated with squamose setae; pattern visible medially, dark lines radiating towards eye region and carapace margins from central dark patch; fovea absent; posterior margin straight; anterior margin narrowing slightly from coxa I; PER recurved in dorsal view, AER recurved in anterior view. Chelicerae: decorated with setae. Labium: triangular in shape; tuft of setae present on tip. Endites: oblique; constricted slightly just above halfway; cluster of setae present on inner–apical margin; posterior margin rounded. Sternum: shield-like; lighter in colour than carapace; broadest between coxa Iand II; posterior margin truncating narrowly between coxa IV; dark patches on lateral margins. Legs: femora laterally flattened, highest at base, leg Imore pronounced in this fashion; rest of legs normal, thin; decorated with feathery setae. Leg macrosetae: Palps: 1pl, 2pl, 1pl, 2plv, 2vt. Leg I: 1do, 1pl, 2plv, 2rlv, 1plv, 1rlv. II: 2vt. III: 2vt, 4vt. IV: 4vt. Legs I–IV with two rows of scopulate setae on metatarsi and four rows on tarsi. Abdomen: cylindrical in shape; wrinkly in texture on anterior half; constricted medially and decorated with squamose setae; dorsal pattern forming transverse white band medially where constricted; longitudinal line scutum perpendicular to constriction ( Fig. 19 View FIGURES 18–26 ); venter similar in colour to dorsum; sigilla not visible. Palp: RTA present apically on retrolateral margin; median apophysis present next to embolus; median apophysis broad, curved and tapering; sperm duct present on retrolateral surface of tegulum; embolus broadest at base, tapered, elongate, tip slightly curved retrolaterally; cymbium pear-shaped, broadest at basal third; cymbial tip broadly tapered; two small spines present on apex of cymbium; one ventral terminal spine in front of embolus ( Figs 131, 132 View FIGURES 129–132 ).

Distribution. Micaria durbana   sp. nov. is distributed on the eastern coast of South Africa, with an isolated recorded from Zambia ( Map 3 View MAP 3 ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Gnaphosidae

Genus

Micaria