Micariakoingnaas, 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 : 52-53

Micariakoingnaas sp. nov.

Figs 23 , 61 , 68 , 141 – 142

Type material. Holotype: ♂, SOUTHAFRICA: Northern Cape: Koingnaas , hand collecting, 30°11.710’S, 17°17.461’E, leg. R. Booysen, Z. Mbo & R. Christiaan, 19.VII.2017 (NCA 2017/1247).

Paratypes: SOUTH AFRICA: Northern Cape: same data as holotype, 1 ♂ (NCA 2017/1247). Western Cape: Strandfontein , handcollecting, 31°45.308’S, 18°13.552’E, leg. R. Booysen, 22.VII.2017, 2 ♂ (NCA 2017/1315) .

Etymology. The species name is a noun in apposition of the type locality of this species.

Diagnosis. Males of this species can be distinguished from other Afrotropical species in having a long palpal tibia (as long as its tarsus) and a very sharp bend in the median apophysis. Female unknown.

Description. Male (holotype from Koingnaas, NCA 2017/1247): Measurements: TL 2.65, CL 1.18, CW 0.68, CL:CW 1.74, CLH 0.06, CLH:AME 1.33. Eyes: ALE 0.05, AME 0.05, PLE 0.05, PME 0.04, AME–AME 0.03, PME–PME 0.06, MOQAW 0.13, MOQPW 0.15, MOQL 0.18. SL 0.62, SW 0.41, AL 1.40, AW 0.65. Leg measurements: Palpal segment lengths: 0.33, 0.16, 0.18, 0.31. Leg I: 0.78, 0.33, 0.62, 0.56, 0.56. II: 0.78, 0.32, 0.56, 0.54, 0.57. III: 0.62, 0.30, 0.56, 0.54, 0.48. IV: 0.98, 0.37, 0.75, 0.79, 0.62. TLoflegs (I–IV): 2.85, 2.77, 2.50, 3.51; leg formula: 4123.

Colouration: carapace dark brown to black; femora darkened; sternum, chelicerae, endites and labium similar in colour to carapace ( Fig. 23 ). Carapace: smooth in texture; fovea absent; decorated with squamose setae; posterior margin truncating; anterior margin narrowing slightly from coxa I; PER procurved in dorsal view, AER recurved in anterior view. Chelicerae: decorated with plumose setae. Labium: triangular in shape; tuft of setae present at tip. Endites: oblique; cluster of setae present on inner–apical margin. Sternum: shield-like, broadest at coxa II; posterior margin tapered to point between coxa IV. Legs: femora laterally flattened, highest at base, leg I more pronounced in this fashion; rest of legs normal, thin; decorated with lanceolate setae ( Fig. 68 ). Leg macrosetae: Palps: 1do, 1pl, 1do, 1pl, 1pl, 1plv, 3vt. Leg I: 1do, 1pl. II: 1d. III: 1do, 1pl, 1rl, 1plv, 1vt, 1pl, 1rl, 1plv, 1rlv, 4vt. IV: 1do, 1pl, 1rl, 2plv, 2vt, 1plv, 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 not visible; venter similar in colour to dorsum; sigilla not visible. Palp: retrolateral tibial apophysis present subapically on dorsal margin, small; median apophysis present medially, elongate, curved at tip; sperm duct present on retrolateral surface of tegulum, curved at base of tegulum; embolus broadest at base, tip thin and elongate, skewed retrolaterally; cymbium widest at midline; tapering slightly towards apex and round at tip, two small spines present on tip of cymbium, three ventral terminal spines present in front of embolus ( Figs 142, 143 ).

Distribution. Micaria koingnaas sp. nov. is known from the western part of South Africa ( Map 5 ).

Figures

MAP 5. The distribution of 13 Micaria species in the Afrotropical Region .

FIGURES 18–26. Stereomicroscope photographs of the dorsal habitus of Afrotropical Micaria species: 18 M. durbana sp. nov. female and 19 male; 20 M. felix sp. nov. male; 21 M. gagnoa sp. nov. female and 22 male; 23 M. koingnaas sp. nov. male; 24 M. lata sp. nov. female; 25 M. laxa sp. nov. male; 26 M. mediospina sp. nov. male. Scale bars: 1.0 mm.

FIGURES 61–64. Scanning electron microscope images of the lyriform organs of Micaria: 61 M. koingnaas sp. nov. male, patella I; 62 M. scutellata sp. nov. male, patella IV; 63 M. plana sp. nov. male, patella I; 64 M. quadrata sp. nov. female, patella I.

FIGURES 65–71. Scanning electron microscope images of the lanceolate setae of Micaria: 65 M. basaliducta sp. nov. male, patella I; 66 M. beaufortia (Tucker, 1923) male, palpal tibia; 67 M. bispicula sp. nov. male, patella I; 68 M. koingnaas sp. nov. male, femur I; 69 M. parvotibialis sp. nov. male, tarsus IV; 70 M. plana sp. nov. male, patella I; 71 M. quadrata sp. nov. female, femur IV. Abbreviation: LS—lanceolate setae.

FIGURES 141–144. Genital morphology of Micaria koingnaas sp. nov. (141, 142) and M. lata sp. nov. (143, 144): 141 male palp, ventral view; 142 same, retrolateral view; 143 female epigyne, ventral view; 144 same, dorsal view. Scale bars: 0.1 mm.