Mallinella birostrata, Dankittipakul & Jocqué & Singtripop, 2012

Dankittipakul, Pakawin, Jocqué, Rudy & Singtripop, Tippawan, 2012, Systematics and biogeography of the spider genus Mallinella Strand, 1906, with descriptions of new species and new genera from Southeast Asia (Araneae, Zodariidae) 3369, Zootaxa 3369 (1), pp. 1-327 : 191-193

publication ID	https://doi.org/ 10.11646/zootaxa.3369.1.1
DOI	https://doi.org/10.5281/zenodo.5254279
persistent identifier	https://treatment.plazi.org/id/933EDA4C-B99B-FF5D-CBC2-FA6EFCB438A4
treatment provided by	Felipe
scientific name	Mallinella birostrata
status	sp. nov.

Treatment

Mallinella birostrata View in CoL sp. nov.

( Figs 840–841 View FIGURES 836–843. 836 , 857 View FIGURES 856–865. 856 , 883–890 View FIGURES 883–890. 883–886 )

Material examined. Holotype: ♂, MALAYSIA, Borneo, Sabah State: West Coast Residency, Mt. Kinabalu , Poring Hot Springs , 495 m, sifting fermented fruits of Ficus sp. , 21 August 1988, leg. A. Smetana ( MHNG, B–136) . Paratypes: 1♀, same data as holotype ( MHNG, B–136). MALAYSIA, Borneo, Sabah State : 1♂, 600 env., audessous de Bat on Kipugit cave , tamisage de débris vegétaux dans le ravin, à proximité de la rivière, 10 May 1987, leg. D. Burckhardt & I. Löbl ( MHNG, 19a) . 1♂, ibidem, 485 m, sifting deer droppings, 27 August 1988, leg. A. Smetana ( MHNG, B–155) . 1♂, ibidem, 500 env., forêt de Dipterocarpacae relativement sèche, tamisage de bois pourri avec champignons à la lisiere de la forêt et de feuillies mortes au pied des arbres dans la forêt, 6 May 1987, leg. D. Burckhardt et I. Löbl ( MHNG, 14a) .

Diagnosis. Males of this new species can be recognized by the broad embolus which is gradually tapered towards the bifurcated apex, in combination with the large triangular apico-prolateral flange on the TA of the palp ( Fig. 883 View FIGURES 883–890. 883–886 ). Females are recognized by the rather simple internal genitalia with subspherical spermathecae ( Fig. 887 View FIGURES 883–890. 883–886 ).

Etymology. The specific epithet is derived from Latin (bi = two; rostratus = with a beak) and refers to the shape of the TA which bears two beak-shaped extensions.

Description. Male (holotype). Total length 7.44; prosoma 4.40 long, 3.40 wide. Eye sizes and interdistances: AME 0.30, ALE 0.22, PME 0.20, PLE 0.22, AME–AME 0.14, AME–ALE 0.32, PME–PME 0.24, PME–PLE 0.46; MOQ: 0.62 long, 0.52 anterior width, 0.48 posterior width. Leg measurements: I 18.02 (4.32, 5.64, 4.52, 3.50), II 14.94 (3.76, 4.70, 3.74, 2.70), III 15.02 (3.94, 4.52, 4.04, 2.50), IV 20.76 (5.02, 6.12, 6.48, 3.12).

Coloration ( Fig. 840 View FIGURES 836–843. 836 ). Carapace orange-brown. Chelicerae brown. Sternum yellowish brown. Legs yellowish, except for coxae whitish. Dorsum of opisthosoma dark brown. Dorsal pattern: anterior pairs reduced, followed by two pairs of pale spots and transverse chevron.

Palp ( Figs 883–886 View FIGURES 883–890. 883–886 ). Retrolateral margin of palpal tibia triangular, strongly pronounced. RTA digitiform, margins parallel in ventral view, apex bluntly pointed. TA provided with triangular apico-prolateral fold; apico-prolateral process broad; baso-retrolateral tooth blunt, slightly elevated. Embolic base ovoid, aligned in longitudinal direction, membranous area narrowed, almost indistinct. Embolus originating at 270°, widened at base, bifurcated, branching subterminally; lateral ramus semi-transparent, forming subterminal fold; mesal ramus tapered towards apex.

Female (paratype). Total length 7.64; prosoma 4.25 long, 3.30 wide. Eye sizes and interdistances: AME 0.30, ALE 0.20, PME 0.18, PLE 0.20, AME–AME 0.12, AME–ALE 0.28, PME–PME 0.24, PME–PLE 0.38; MOQ: 0.60 long, 0.52 anterior width, 0.50 posterior width. Leg measurements: I 17.06 (4.08, 5.34, 4.28, 3.32), II 14.14 (3.56, 4.44, 3.54, 2.56), III 14.24 (3.74, 4.28, 3.82, 2.38), IV 19.66 (4.74, 5.78, 6.14, 2.98).

Coloration ( Fig. 841 View FIGURES 836–843. 836 ). Carapace orange-brown. Chelicerae brown. Sternum yellowish brown. Legs yellowish, except for coxae whitish. Dorsum of opisthosoma brown. Dorsal pattern: first pair of spots greatly reduced; second and third pairs represented by large pale spots obliquely arranged, distinctly larger than fourth and fifth pairs.

Genitalia ( Figs 857 View FIGURES 856–865. 856 , 887–890 View FIGURES 883–890. 883–886 ). Epigynal plate trapezoidal, slightly wider posteriorly, posterior margin strongly rebordered. Lateral borders digitiform, apically blunt, projecting inwards. Spermathecae subspherical.

Natural history. Mallinella birostrata sp. nov. were collected by means of sifting humus and decomposing organic debris at approximately 500–600 m asl.

Distribution. Known only from the type locality in Sabah.