Mistaria jumbo (Strand, 1913) Strand, 1913

Kioko, Grace M., Jaeger, Peter, Kioko, Esther N., Ji, Li-Qiang & Li, Shuqiang, 2019, On the species of the genus Mistaria Lehtinen, 1967 studied by Roewer (1955) from Africa (Araneae, Agelenidae), African Invertebrates 60 (1), pp. 109-132 : 109

Mistaria jumbo (Strand, 1913) comb. nov. Figs 2, 3, 12B, 13

Agelena jumbo Strand 1913: 407.

Agelena jumbo Roewer, 1955: 37.

Material examined.

Holotype ♀, Rwanda, 1907 (SMF 9907948); Palp, Democratic Republic of the Congo, Kessenji, 1 ♂, September 1907 (SMF 9907948: microscopic slide, left palp).

Diagnosis.

Mistaria jumbo comb. nov. can be distinguished from the type M. leucopyga by the shape of the anterior lobe of the epigyne which has an extended inward growth lacking in the former species (Fig. 2B). The male of this species can be distinguished from other Mistaria species by having two embolic outgrowths (Fig. 3A) whereas M. leucopyga and M. nairobii have a single embolic outgrowth while in M. nyeupenyeusi it is absent (see fig. 1 in Santos and van Harten 2007; figs 2B, 5E in Kioko et al. 2018).

Redescription.

Female. Total length 11.00. Carapace 3.90 long 3.53 wide. Abdomen 7.10 long 4.49 wide. Habitus as in Fig. 12B. Carapace as long as wide, brown-yellow, cephalic region dark brown. Long groove from PME to fovea. Fovea short. Eye sizes and interdistances: AME 0.26, ALE 0.26, PME 0.20, PLE 0.24, AME–AME 0.08, AME–PME 0.28, ALE–PLE 0.08, PME–PME 0.20, PME–PLE 0.24. Chelicerae brown. Labium and endites brown, apex white. Labium 2/3 length of endites. Sternum as long as wide, brown-yellow. Legs brownish-yellow. Leg measurements: II 13.23 (3.53, 4.49, 3.29, 1.92), III 12.80 (3.50, 4.17, 3.21, 1.92), IV 15.40 (4.5, 5.13, 3.85, 1.92). Leg I missing. Abdomen oval, creamish-yellow, three chevron marks dorsally, two black parallel stripes (Fig. 12B). Spinnerets cream yellow.

Epigyne as in Fig. 2A, B. Teeth wide posteriorly and narrow distally, about 1/2 the length of the lateral notch, central origin (Fig. 2A). Copulatory duct 0.1 apart, centrally projected, yellow (Fig. 2B). Size of spermathecal lobes decrease posteriorly, anterior lobe round with an extension inwards (Fig. 2B).

Male body not available for redescription. See Roewer, 1955: 37-38.

Palp as in Fig. 3A, B. Cymbium 1.7 long, short and thick, brown-yellow, tip 1/4 length of cymbium (Fig. 3A). Median apophysis non-sclerotized. Ratio of retrolateral tibial apophysis to lateral tibial apophysis 4:1. Patella twice the size of the tibia. Patella apophysis cone shaped, 1/2 length of tibia. Embolus originating centrally, two embolic outgrowths, sharp tip (Fig. 3A).

Distribution.

Democratic Republic of the Congo, Rwanda (Fig. 13).