Ischnocolus jickelii Koch, 1875

Guadanucci, José Paulo Leite & Wendt, Ingo, 2013, Revision of the spider genus Ischnocolus Ausserer, 1871 (Mygalomorphae: Theraphosidae: Ischnocolinae), Journal of Natural History (J. Nat. Hist.) 48 (7 - 8), pp. 387-402 : 395-396

Ischnocolus jickelii Koch, 1875

( Figure 4B )

Ischnocolus jickelii L. Koch 1875: 58 , pl. 6, f. 2 (Df); Guadanucci & Gallon 2008: 42 (S). Chaetopelma adenense Simon 1890: 83 (Df) .

Type material

Holotype female ( BMNH 19-9 - 18-5698 -99) from Ethiopia; not located, not examined.

Note

Smith (1990) stated that the specimen in the Koch collection is a juvenile and that the species should be suspended until more material has been discovered. As listed below, additional material was studied and, therefore, I. jickelii is here considered a valid species.

Additional material

DJIBOUTI: Obock: 1f ( MNHN 22250 ) ; 13j ( MNHN 19152 ) ; ETHIOPIA: Abyssinia : 1f ( MNHN 3284 ) ; Adayalla : 1f and 3j ( MNHN 22257 ) ; SOMALIA: Mogadishu : 2f ( MRAC 147156 ) , January 1945, P. Accigliaro leg.; YEMEN: Aden: 1f ( BMNH 95.5.22-16), 6 February 1995; 1f, type specimen of Chaetopelma adenense ( MNHN 9976 ) .

Diagnosis

Female representatives can be distinguished from congeners by the spermathecae formed by two receptacula with a wide base, bearing a large apical lobe with two small lateral lobes, and small lobes below the apical region ( Figure 4B ). Males unknown.

Description

Female (MNHN 3284). Total length 19.1. Carapace: length 7.4; width 6.3. Eye tubercle: length 0.9; width 1.3. Labium: length 0.8; width 1.3. Sternum: length 3.4; width 3. Cheliceral basal article with eight or nine teeth. Labium as wide as long bearing 11 cuspules. Maxillae with more than 60 cuspules. Sternum oval, posterior sigilla marginal. Thoracic furrow straight. Palp: femur 3.9 / patella 2.7 / tibia 2.8 / tarsus 2.6 / total 12. Legs I: femur 5.6 / patella 3.8 / tibia 4.5 / metatarsus 3.6 / tarsus 2.3 / total 19.8. II: 5.1 / 3.3 / 3.8 / 3.4 / 2.3 / 17.9. III: 4.6 / 2.6 / 3.3 / 3.9 / 2.3 / 16.7. IV: 6.2 / 3.3 / 5.3 / 5.7 / 2.9 / 23.4. Spines: Tarsi without spines. Palp: femur (d) 0-0-p1, tibia (v) 2-2-ap3, (p) 0-1-0. Legs: I: femur (d) 0-0-p1, tibia (v) 1-1-ap2, (p) 0-1-0, metatarsus (v) 1-0-ap1. II femur (d) 0-0-p1, tibia (p) 0-1-0, (v) 1-1-ap2, metatarsus (v) 0-1-ap1. III femur (d) 0-0-2, patella (p) 1, tibia (p) 1-1-0, (r) 1-1-0, (v) 2-2-ap3, metatarsus (p) 1-1-1, (r) 0-1-1, (v) 2-3-ap3. IV: femur (d) 0-0-2, tibia (v) 2-2-ap2, (r) 1-2-0, metatarsus (v) 2-3-ap3, (p) 2-1-1, (r) 0-1-1. Scopula on metatarsi: I and II totally occupied, III three-quarters occupied, IV half occupied. Scopula on tarsi: I–IV divided by a longitudinal band of setae. Superior tarsal claws without teeth. Eyes: anterior row procurved, posterior recurved, clypeus narrower than the diameter of anterior median eyes. Posterior lateral spinnerets three-segmented, apical article triangular.

Figures

Figure 4. (A) Ischnocolus hancocki, holotype female, BMNH 1990.10.15.2, spermathecae, dorsal view.(B) Ischnocolus jickelii, holotype female, BMNH 19-9-18-5698-99, spermathecae, dorsal view. Scales = 1 mm.