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[See also Catalogue of Salticidae: Menemerus ]

Descriptions of New Taxa

A Supplement to Salticidae Diagnostic Drawings Library

by Jerzy Proszynski 1997

Descriptions of new species, in print now, or in preparation for print, made provisionally available for the Users of the Diagnostic Drawings Library because of long delay in publication. Attention: the International Code for Zoological Nomenclature does not recognize taxonomic names unles description is printed on paper.

Arachnologists using these descriptions and drawings are kindly requested to acknowledge that in their publications.

Menemerus davidi Proszynski et Wesolowska in Wesolowska 1999

See Drawings by Proszynski ... and by Wesolowska

Material: Wesolowska's holotype and paratypes - see: Wesolowska W. 1999. A revision of the spider genus Menemerus in Africa (Araneae: Salticidae). Genus, Wroclaw, 10(2): 279-281, figs 78-89.

Paratypes by J. Proszynski: Israeli specimens male - Menemerus sp. cf. animatus (sp. n. ?) En Fawwar 26. III. 1975. No. 14303. Coll. M. Tintpulver. Paratypes: 1) 1 male Menemerus sp. cf. animatus (sp. n. ?). Bet Shemesh, 15. VI. 1957, Y. Werner. No. 14304 (distinctly larger specimen). 2) 1 male "Menemerus animatus Palestine, Bottle 1833, tube 39" Coll. O. P.-Cambridge, Hope Entomological Collections, Oxford. 3) 2 female, 1 juv. "Menemerus semilimbatus" A. 2411 [no data]. 4) 1 female, 1 juv. "Menemerus semilimbatus" A.3204 [no data]. 5) 1 male "Menemerus semilimbatus det. Shulov Paris 1947".

Diagnosis. Similar to M. animatus in external appearance, general plan of palpal organ and epigyne, which are different from any other Menemerus I have seen. The differences with M. animatus are: lack of white ventral margin on carapace, much less distinct light triangle in the foveal area, different abdominal pattern, brown surfaces of femur I (prolateral darker, in M. animatus these surfaces are light yellow), remaining segments and legs light yellow, presence of two spots of short white setae on edge of clypeus (in M. animatus dense white line of setae, continuous with marginal white streak but interrupted medially by a small bald dark spot); ventral ramus of tibial apophysis directed diagonally back, long, tapering and pointed apically, the dorsal ramus three-lobed plate. female epigyne differs by anterior connecting groove, arrangements of channels and spermathecae.

Male

Cephalothorax almost uniformly dark brown, covered by inconspicuous adpressed setae, colorless, or dark, except white setae on the posterior half of eye field and~ whitish triangle patch in the lighter pigmented foveal area which extends narrowing onto posterior slope of thorax; lower sides dark without ventral margin of white setae. Anterior slope of the eye field is gently inclined, flat surface of the cephalothorax limited to the space between eyes II and III, lowering of height by eyes diameter just behind eyes III, after short flattening the posterior slope begins at 81 % of length of cepha~lo~tho~r~ax.

Abdomen: tegument of median area transparent with silver white spots of internal guanine cells, bisected along anterior 1/3rd by a thin, darker median streak, corresponding to heart location; marginal broad, dark greyish, zigzagging bands with four triangular apexes pointed me~dially and four light triangular spots at the margin of lateral sur~faces.

Frontal aspect: face dark brown with a thin row of short setae ventrally along edge of clypeus, consisting of two spots of short white setae beneath AME, separated in the middle and limited laterally by indistinct brown setae; eyes I surrounded sparsely by indistinct whitish setae, yellowish along late~ral rims of ALE. Che~li~cerae dark brown; cymbium light brown, dorsal surface of remaining segments of pedipalps dark yellow with white setae, more prominent triangle of white setae apically on femur, however larger specimen from Bet Shemesh devoid of white setae; no triangular apophysis on patella; leg I with prolateral surface of femur dark brown, all remai~ning segments light yellow.

Ventral aspect: external angle of maxilla~ry plate prominently expanded triangularly; mouth parts brown; sternum brown to light brown, anterior coxae light brown, re~maining yellowish; abdomen light with slightly more greyish streak between two lines of dot like depressions. Legs I-IV light yellow, (except mentioned above brown lateral surfaces of femur I). Larger specimen from Bet Shemesh has legs distinctly darker: legs I are light brown with darker brown lateral surfaces of femur I, also darkened lateral surfaces of femur II, femur III-IV with two lateral brown annuli, less distinct lateral annuli on tibia and metatarsus III-IV.

Palpal organ: ventral ramus of tibial apophysis directed diagonally back, long, tapering and pointed apically; dorsal ramus developed into prominent plate, thin with edge divided into three small lobes. Menemerus soldani has similar ventral ramus, but differs by well developed dorsal ramus, narrow, long, directed anteriorly and slightly bent terminally.

Female

Epigyne resembles M. animatus by general shape of epigyne, transverse oval with prominent sclerotized pockets at the posterior edge, and copulatory opening located in near marginal grooves at the mid length of epigyne; it differs by less delimited and not separated grooves, connected by semicircular depression. Broad copulatory opening leads to transverse channel, located at mid-length of epigyne, across mid length of spermatheca; short narrower channel running posteriorly joins elongate medial spermatheca, with prominent scent pore at the posterior end, and fertilisation channel at the anterior end. In M. animatus transverse anterior channel has comparable location, but the short, narrower, "S" bent channel runs anteriorly, spermatheca is spherical and located anteriorly. External appearance of epigyne in M. soldani shows some similarity with both M. animatus and M. davidi, its internal structure, however, was not studied.

Measurements (mm): Male Length of cephalothorax 2.28-2.96; length of abdomen 2.38-2.89; length of 5 segments of leg I 5.93-7.48, lenght oflegs order I, IV, II, III. Female. Length of cephalothorax 2.96; length of abdomen 4.76; length of 5 segments of leg 5.84, lenght oflegs order IV, III, I, II.

Distribution: Israel: En Fawwar, Bet Shemesh, "A.3204", "A.2411". Seasonal appearance: males - III, VI.