Drassodella trilineata, Mbo & Haddad, 2019

Mbo, Zingisile & Haddad, Charles R., 2019, A revision of the endemic South African long-jawed ground spider genus Drassodella Hewitt, 1916 (Araneae: Gallieniellidae), Zootaxa 4582 (1), pp. 1-62 : 53-54

publication ID

https://doi.org/10.11646/zootaxa.4582.1.1

publication LSID

lsid:zoobank.org:pub:9DC61794-4BD7-4F6D-BB8C-84D9855C8151

persistent identifier

http://treatment.plazi.org/id/B74F87AB-9E55-4014-53B3-CB1A61299EF7

treatment provided by

Plazi

scientific name

Drassodella trilineata
status

sp. nov.

Drassodella trilineata   sp. nov.

Figs 76 View FIGURES 60–77 , 169 View FIGURES 157–171 , 197–202 View FIGURES 197–202

Etymology. A combination of the Latin words tri (three) and lineatus (striped), referring to the narrow white median carapace stripe and pair of narrow white dorsolateral abdominal stripes.

Diagnosis. Females of D. trilineata   sp. nov. are similar to those of D. septemmaculata   , but can be recognised by anterior hood that has a broadly rounded anterior apex and the posterior half of the median septum that is almost parallel-sided ( Figs 76 View FIGURES 60–77 , 197 View FIGURES 197–202 ), while in D. septemmaculata   the anterior hood takes the form of an equilateral triangle and the posterior half of the median septum is heart-shaped ( Figs 75 View FIGURES 60–77 , 193 View FIGURES 193–196 ). Male unknown.

Description. Female (Holotype, Baviaanskloof, NCA 2010 /111). Measurements: CL 3.64, CW 2.88, AL 5.56, AW 2.94, TL 8.90 (8.10–8.90), FL 1.08, SL 1.90, SW 3.48, CH 0.14, AME-AME 0.09, AME-ALE 0.05, ALE-ALE 0.35, PME-PME 0.13, PME-PLE 0.14, PLE-PLE 0.62, PERW 0.71, MOQAW 0.12, MOQPW 0.33, MOQL 0.38.

Length of leg segments: I 2.60 + 1.40 + 2.00 + 1.92 + 1.40 = 9.32, II 2.44 + 1.32 + 1.76 + 1.80 + 1.44 = 8.76, III 2.28 + 1.18 + 1.64 + 2.08 + 1.24 = 8.42, IV 3.32 + 1.28 + 2.44 + 3.44 + 1.62 = 12.10.

General appearance as in Fig. 169 View FIGURES 157–171 . Carapace dark brown, with dense black mottling; upsilon marking of white feathery setae from carapace anterior margin, running to fovea, diverging behind it, branches not quite reaching posterior margin. Clypeus height equal to 1.40 AME diameter; AME smaller than ALE; AME separated by distance slightly less than their diameter, AME separated from ALE by distance half AME diameter; PME smaller

than PLE; PME separated by distance equal to 1.30 their diameter, PME separated from PLE by distance equal to 1.40 PME diameter. Chelicerae dark-brown anteriorly, orange at base of fang; promargin with three teeth, median tooth largest, proximal and distal teeth subequal; retromargin with two teeth, distal tooth larger. Endites yellow orange-brown, with brown line along margins, cream anteriorly at maxillar hair tuft. Labium dark brown, anterior margin orange, broader than long. Sternum orange-brown, setae spread evenly across surface. Legs with proximal segments dark orange-brown, with dense black mottling, distal segments uniformly deep orange-brown. Leg spination: femora: I do 2 rl 1, II do 2 rl 1, III do 4, IV do 4 rl 1; patellae: spineless; tibiae: I plv 2 rlv 2, II plv 2, III pl 2 do 1 rl 2 plv 2 rlv 2 vt 2, IV pl 2 do 1 rl 2 plv 2 rlv 2 vt 2; metatarsi: I spineless, II plv 1 rlv 1, III pl 4 do 1 rl 4 plv 2 rlv 2 vt 2, IV pl 3 do 1 rl 3 plv 2 rlv 2 vt 2; palpal spination: femora do 4; patellae do 1 rl 1; tibiae do 2 rl 3; tarsi pl 1 do 2 rl 2 plv 1 rlv 1. Abdomen black, with white feathery setae forming two narrow white dorsolateral stripes from anterior margin to just above spinnerets, white spot of feathery setae above spinnerets ( Fig. 169 View FIGURES 157–171 ); venter yellow, covered by fine feathery setae; elongate sclerite on lateral sides above booklungs; two paired rows of tiny sclerites from epigastric fold to spinnerets. Spinnerets pale. Epigyne with shallow anterior hood, broad arch with rounded median apex, lateral ends forming start of median septum; lateral margins of median septum initially directed mesally, curving in sharp C-shape, midsection parallel-sided, posterior quarter converging at epigastric furrow; ST I and ST II pale orange-brown, connecting ducts dark orange-brown; ST II teardrop-shaped, separated by slightly more than their width, nearly three times as large as oval ST I ( Figs 76 View FIGURES 60–77 , 197, 198 View FIGURES 197–202 ).

Type material. Holotype ♀: SOUTH AFRICA: Eastern Cape Province: Keurkloof, Farm Ferndale, Baviaanskloof , 33°45’S, 24°48’E, 21–24.III.2008, leg. A.S. Honiball & S. Hohowsky (pitfalls, river bank) ( NCA 2016 /2821). GoogleMaps  

Paratypes: Same data as holotype, 2♀ ( NCA 2010/111).

Distribution. Known only from the type locality ( Fig. 203 View FIGURE 203 ).