Anansus debakkeri Huber, 2007, n. sp.
Creators: name: Huber, Bernhard A.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Pholcidae
Anansus
Anansus debakkeri

description: Anansus debakkeri, n. sp.
(Figs. 57–61)
Type material. Male holotype from Congo Democratic Republic, Bas-Congo, Mayombe, Luki Forest Reserve, primary rain forest, “fogging 4”, November 12, 2006 (D. De Bakker, J. P. Michiels), in MRAC (separated from 219.854).
Etymology. Named for Domir De Bakker (Musée royal de l’Afrique Centrale, Tervuren), collector of the present material.
Diagnosis. Distinguished from the two known congeners by the morphology of the procursus (Figs. 58, 59) and by details of internal female genitalia (Fig. 61). Otherwise very similar (including male chelicerae).
Male (holotype). Total length 1.20, carapace width 0.50. Leg 1: 4.30 (1.10 + 0.20 + 1.13 + 1.30 + 0.57), tibia 2: 0.77, tibia 3: 0.57, tibia 4: 0.90. Tibia 1 L/d: 21. Habitus as in A. ewe (cf. Figs. 6–8); carapace ochregray, mottled with black, sternum with distinctive pattern of black lines on each side (cf. Fig. 8), legs ochreyellow, abdomen gray with distinct black line dorsally reaching the spinnerets; distance PME–PME 20 µm; diameter PME ~80 µm (slightly oval shape); distance PME–ALE 15 µm; AME missing. Sternum wider than long (0.38/0.34), unmodified. Clypeus with tiny median projection on ventral rim (cf. Fig. 43); chelicerae with pair of simple frontal apophyses similar to A. aowin (cf. Fig. 34), with proximal apophyses directed backwards, without stridulatory ridges. Palps as in Figs. 57, 58; coxa unmodified, trochanter with distinct ventral apophysis, femur small, with prominent prolateral projection, tibia very large, procursus (Fig. 59) consisting of proximal part with ventral pointed projection and distinctive sclerite set with brush of hairs, and large distal part, the latter complex and hinged towards proximal part; bulb simple, consisting of globular part and weakly sclerotized curved embolus (Fig. 57); palpal tarsal organ capsulate. Legs without spines and curved hairs, few vertical hairs; retrolateral trichobothrium of tibia 1 at 25%, prolateral trichobothrium absent on tibia 1, present on other legs; tarsus 1 with about 10 pseudosegments, only distally fairly distinct.
Variation. Tibia 1 in 7 other males: 0.93–1.13 (mean: 1.07). No other variation seen.
Female. In general similar to male but clypeus unmodified. Tibia 1 in 8 females: 0.93–1.10 (mean: 1.03). Epigynum a simple dark frontal plate with pair of small pockets close together near posterior rim, and narrow posterior plate (Fig. 60); externally similar to A. ewe (cf. Fig. 9); internally with conspicuous dark structures of unknown significance and pair of small pore plates (Fig. 61).
Distribution. Known from type locality in Congo DR only (Fig. 74).
Material examined. CONGO DR: Bas-Congo, Mayombe, Luki Forest Reserve: type above, together with 2ɗ2Ψ; same data but Nov. 4–10, 2006, 6ɗ6Ψ in MRAC (4 vials, separated from 219.850–3).
description: Published as part of Huber, Bernhard A., 2007, Two new genera of small, six-eyed pholcid spiders from West Africa, and first record of Spermophorides for mainland Africa (Araneae: Pholcidae), pp. 23-43 in Zootaxa 1635 on page 36, DOI: 10.5281/zenodo.179534