Micariagagnoa, 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: 50-52

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.4681013

persistent identifier

http://treatment.plazi.org/id/03AC3314-9C03-FFF5-7CBD-F8DDFA5BFA95

treatment provided by

Plazi

scientific name

Micariagagnoa
status

sp. nov.

Micariagagnoa   sp. nov.

Figs 21 – 22 View FIGURES 18–26 , 137 – 140 View FIGURES 137–140

Type material. Holotype: ♀, CÔTE D’IVOIRE: Fromager Region : Gagnoa, upland rice, pitfalltraps, 06°34’N, 06°15’W, leg. A. Russell-Smith, 8.V.1995 (MRAC 227323). GoogleMaps  

Paratypes: CÔTE D’IVOIRE: Fromager Region: same data as holotype, 5 ♂ 1 ♀, (MRAC 227323). MOZAMBIQUE: GoogleMaps   Inhaca   Island: wetland, pitfalltraps, 26°01’S, 32°54’E, leg. T. Steyn, 30.IV–14.V.1994, 1 ♀ (MRAC 209908). TANZANIA GoogleMaps   : Kilimanjaro Region: Mkomazi National Park , Ibaya Camp, unburnt grassland, hand collecting, 04°00’S, 38°00’E, leg. A. Russell-Smith, 26.XI.1994, 26 ♂ 5 ♀ (MRAC 211337) GoogleMaps   .

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

Diagnosis. Micaria gagnoa   sp. nov. very closely resembles M. felix   sp. nov., but they can be distinguished by the females’ anterior epigynal hood that is larger (in this case a larger atrium and longer) in M. gagnoa   sp. nov. than in M. felix   sp. nov. Furthermore, the spermathecae of the former is horizontally flattened, whereas the latter’s is laterally flattened. The males are very difficult to distinguish due to the similarity of the palps and habitus, but M. gagnoa   sp. nov. does have a smaller MA than M. felix   sp. nov.

Description. Female (holotype from Gagnoa, MRAC 227323): Measurements: TL 2.35, CL 0.95, CW 0.60, CL:CW 1.58, CLH 0.06, CLH:AME 1.6. Eyes: ALE 0.06, AME 0.04, PLE 0.05, PME 0.04, AME–AME 0.01, PME–PME 0.03, MOQAW 0.10, MOQPW 0.13, MOQL 0.14. SL 0.52, SW 0.38, AL 1.30, AW 0.80. Leg measurements: Palpal segment lengths: 0.33, 0.19, 0.22, 0.30. Leg I: 0.60, 0.25, 0.46, 0.38, 0.48. II: 0.53, 0.22, 0.46, 0.40, 0.48. III: 0.48, 0.21, 0.43, 0.35, 0.37. IV: 0.81, 0.29, 0.67, 0.73, 0.56. TLoflegs (I–IV): 2.17, 2.09, 1.84, 3.06; leg formula: 4123.

Colouration: carapace dark brown; abdomen dark brown; legs Iand II with femora darkened on posterior half; other legs uniform in colour; endites, labium and chelicerae similar in colour to carapace ( Fig. 21 View FIGURES 18–26 ). Carapace: smooth in texture; transverse median depression present on posterior third; decorated with squamose setae; posterior half of carapace with dark triangular patches on lateral sides flanked by light brown radiating markings; dark brown stripes radiating outwards present on anterior half; posterior margin straight; fovea absent; anterior margin narrowing slightly from coxa I; PER recurved in dorsal view, AER recurved in anterior view. Chelicerae: decorated with short plumose setae. Labium: triangular in shape, truncating where chelicerae meet. Endites: broad; slanting inwards; constricted slightly just above halfway; flattened anterior margin with dark anterior ridge; cluster of setae present on inner–apical margin; posterior margin rounded. Sternum: shield-like; lighter incolour than carapace; broadest between coxa Iand II; posterior margin tapering between coxa IV. Legs: femora of all legs laterally flattened, highest at base, leg Imore pronounced in this fashion; rest of legs normal, thin. Leg macrosetae: Palps: 3plv, 1pl, 1pl, 1plv, 1pl, 2plv, 2rlv, 2vt. Leg I: 1do, 1pl, 2plv, 2rlv, 1plv, 1rlv. III: 1pl, 1vt, 1plv, 1rlv, 4vt. IV: 1vt, 2vt. 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 in holotype; venter similar in colour to dorsum; sigilla not visible. Epigyne: in ventral view, anterior hood continuous, strongly recurved; large atrium; posterior pockets present medially, straight with laterally curved apices; copulatory openings at bulbous apices of copulatory ducts. In dorsal view, copulatory ducts elongate, “C” shaped, wide apart; fertilisation ducts extending medially, curved at apices; spermathecae globular; horizontally elongate; anterior margin of spermathecae flattened and aligned with fertilisation ducts ( Figs 137, 138 View FIGURES 137–140 ).

Male (paratype from Gagnoa, Cote d’Ivoire, MRAC 227323): Measurements: TL 2.25, CL 1.05, CW 0.60, CL: CW 1.75, CLH 0.06, CLH:AME 1.6. Eyes : ALE 0.06, AME 0.04, PLE 0.06, PME 0.04, AME–AME 0.01, PME–PME 0.05, MOQAW 0.10, MOQPW 0.14, MOQL 0.16. SL 0.56, SW 0.41, AL 1.10, AW 0.60   . Leg measurements: Palpal segment lengths: 0.44, 0.22, 0.21, 0.30. Leg I: 0.65, 0.25, 0.48, 0.43, 0.46. II: 0.60, 0.22, 0.46, 0.44, 0.48. III: 0.52, 0.19, 0.40, 0.46, 0.37. IV: 0.68, 0.30, 0.68, 0.78, 0.56. TLoflegs (I–IV): 2.27, 2.20, 1.94, 3.00; leg formula: 4123   .

Colouration: carapace dark brown; abdomen dark brown; legs Iand II with femora darkened on basal half, other legs uniform in colour; endites, labium and chelicerae similar in colour to carapace ( Fig. 22 View FIGURES 18–26 ). Carapace: smooth in texture; transverse median depression present on posterior third; decorated with squamose setae; posterior half of carapace with dark triangular patches on lateral sides flanked by light brown radiating markings; dark brown stripes radiating outwards on anterior half; posterior margin straight; fovea absent; anterior margin narrowing slightly from coxa I; PER recurved in dorsal view, AER recurved in anterior view. Chelicerae: decorated with short plumose setae. Labium: triangular in shape, tuft of setae present on tip. Endites: broad; slanting inwards; constricted slightly just above halfway; flattened anterior margin with dark anterior ridge; cluster of setae present on inner–apical margin; posterior margin rounded. Sternum: shield-like; lighter in colour than carapace, with dark lateral margins; broadest between coxa Iand II; posterior margin tapering between coxa IV. Legs: femora laterally flattened, highest at base, leg Imore pronounced in this fashion; rest of legs normal, thin. Leg macrosetae: Palps: 3plv, 1pl, 1pl, 1plv, 1pl, 1plv, 2vt. Leg I: 1do, 1pl, 2plv, 2rlv, 1plv, 1rlv. III: 1pl, 1vt, 1plv, 1rlv, 4vt. IV: 2vt, 2vt. 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 light transverse median line connecting to scutum; anterior half of abdomen slightly lighter brown than posterior half; venter similar in colour to dorsum; sigilla not visible. Palp: retrolateral tibial apophysis present on retrolateral margin; median apophysis present next to embolus, curved retrolaterally; sperm duct present on retrolateral margin of tegulum, curved at base, kink just before base of embolus; embolus thin and very slightly curved retrolaterally; cymbium widest at posterior third, tapering roughly quarter of cymbium’s length in front of tegulum ( Figs 139, 140 View FIGURES 137–140 ).

Distribution. Micaria gagnoa   sp. nov. is known from isolated records in eastern and western Africa ( Map 5 View MAP 5 ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Gnaphosidae

Genus

Micaria