Tetebius latibunus Roewer, 1949

Tetebius latibunus Roewer, 1949 View in CoL

urn:lsid:zoobank.org:act:B8D24F87-16C6-40C1-B7F6-3486C4EF5741

( Figs 1 View FIGURE 1 ; 3–10 View FIGURE 3 View FIGURE 4 View FIGURE 5 View FIGURE 6 View FIGURE 7 View FIGURE 8 View FIGURE 9 View FIGURE 10 , Table 1)

Tetebius latibunus Roewer 1949: 288 View in CoL , Taf. 12, fig. 98 a–e; Staręga 1992: 330; Kury & Pérez-González 2015: 7, fig. 3. Malgaceros boviceps Lawrence 1959: 80–82 View in CoL , fig. 27; Staręga 1992: 330; Kury & Pérez-González 2015: 6–7. New synonymy

Type material. Tetebius latibunus , ♂ holotype ( SMF 9909102 About SMF , previously cataloged as RII/1902/230, examined), MOZAMBIQUE, Teté ( Fig. 2 View FIGURE 2 ) (spurious locality see further considerations) .

Malgaceros boviceps , 3 ♂, 1 ♀ syntypes ( MNHN, destroyed), MADAGASCAR, Sambirano , Nosy Be, Lokobe, Oct. 1947, J. Millot, under stones .

Remark: the syntypes of Malgaceros boviceps were destroyed in the tragic fire that occurred in the MNRJ in 2018 (A.B. Kury pers. comm.).

Other material examined. 2 major ♂ (1 photo voucher), 3 minor ♂ (1 photo voucher) (CASENT 9069465), MADAGASCAR, Antsiranana, Nosy Be, Réserve Naturelle Intégrale de Lokobe, 6.3 km 112° ESE Hellville, - 13.41944°; 48.33111°, 30 m a.s.l., rainforest, EC19 sifted Litter, 19–24 Mar 2001, coll. B. L. Fisher et al., collection code: BLF3422. 1 major ♂, 1 minor ♂ (MACN-Ar 45417) with the same data as for preceding. 1 major ♂ ( SEM voucher) (MACN-Ar 45346) with the same data as for preceding. 2 minor ♂, 9 ♀ (1 photo voucher) ( CASENT 9069463 ), MADAGASCAR, Antsiranana, Nosy Be, Réserve Naturelle Intégrale de Lokobe , 6.3 km 112° ESE Hellville, -13.41944°; 48.33111°, 30 m a.s.l., rainforest, EC19 sifted Litter, 19–24 Mar 2001, coll. B. L. Fisher et al., collection code: BLF3422. 1 ♀ (MACN-Ar 45361) with the same data as for preceding. 1 minor ♂ ( CASENT 9069464 ), MADAGASCAR, Antsiranana, Nosy Be, Réserve Naturelle Intégrale de Lokobe , 6.3 km 112° ESE Hellville, -13.41944°; 48.33111°, 30 m a.s.l., rainforest, EC27 pitfall trap, 19–24 Mar 2001, coll. B. L. Fisher et al., collection code: BLF3418 .

Redescription. Minor male holotype (SMF 9909102, formerly RII/1902/230). Body measurements: Total body length 1.46, carapace length 0.50, scutum magnum length 1.15, carapace maximum width 0.86, abdominal scutum maximum width 0.99. Appendage measurements in Table 1.

Dorsum: Outline hourglass-shaped with Eta (η) shape, with a slightly accentuated constriction posterior to eye level ( Figs 1A View FIGURE 1 ; 3A View FIGURE 3 ). Carapace coarsely granulated, wider than long ( Figs 1A View FIGURE 1 ; 3A View FIGURE 3 ), with a marked and rounded frontal hump ( Fig. 1C View FIGURE 1 ); anterior border of carapace with three granules on each side ( Fig. 3A View FIGURE 3 ). Cheliceral sockets not marked ( Figs 1A View FIGURE 1 ; 3A View FIGURE 3 ). Eyes separated and located on the sides of a wide and low ocularium ( Figs 1A, C View FIGURE 1 ; 3A View FIGURE 3 ); ocularium shorter than the height of the abdominal scutum and occupies the posterior region of the carapace up to the frontal hump ( Fig. 1C View FIGURE 1 ). Sulcus I deep and well-marked, in dorsal view curved to anterior body region ( Figs 1A View FIGURE 1 ; 3A View FIGURE 3 ). Mesotergal areas I–IV granulated and not completely defined; sulci II–IV shallow and limited to the medial region ( Figs 1A View FIGURE 1 ; 3A View FIGURE 3 ). Mesotergal area I with larger medial granules ( Figs 1A View FIGURE 1 ; 3A View FIGURE 3 ); mesotergal area II with a medial row of larger granules and one medial tubercle; mesotergal areas III–IV with two medial tubercles; tubercles of mesotergal area IV more separated from each other than tubercles of mesotergal area III ( Figs 1A View FIGURE 1 ; 3A View FIGURE 3 ). Mesotergal area V granulated with one medial tubercle ( Figs 1A View FIGURE 1 ; 3A View FIGURE 3 ). Lateral margins of scutum magnum with rows of granules ( Fig. 3A View FIGURE 3 ). Free tergites granulated; free tergites I–III with a posterior row of larger granules and three medial setiferous tubercles ( Fig. 3A View FIGURE 3 ).

Venter: Without any conspicuous armature ( Fig. 1B View FIGURE 1 ); coxa I with setiferous granules; anteroposterior borders of coxa III with a row of strong granules connecting with coxae II and IV, respectively ( Fig. 1B View FIGURE 1 ); coxa IV with lateral margin granulated ( Fig. 1B View FIGURE 1 ); anal operculum with several conspicuous granules ( Fig. 1B View FIGURE 1 ). Spiracles concealed by a bridge-like projection from distal coxa IV connecting to the posterior margin of the stigmatic area ( Fig. 1B View FIGURE 1 ).

Chelicerae: Basichelicerite with a marked bulla and two dorsal setiferous granules on the proximal margin ( Fig. 3A, E View FIGURE 3 ). Cheliceral hand with an ectal concavity, sparse setae and three frontal rounded setiferous tubercles ( Fig. 3E–F View FIGURE 3 ). Fixed finger proximally with one large triangular tooth followed by smaller teeth ( Fig. 3F View FIGURE 3 ).

Pedipalps: Coxa proximally with two dorsomesal granules and one dorsoectal granule ( Fig. 3A View FIGURE 3 ). Femur curved; ventral surface with two large proximal spines, medially with one small mesal spine and one small ectal setiferous tubercle ( Fig. 3B–D View FIGURE 3 ). Patella distally with a small mesal spine ( Fig. 3B View FIGURE 3 ). Tibia ventrally with two short mesal spines and three large ectal spines ( Fig. 3B–C View FIGURE 3 ). Tarsus shorter than tibia; ventral surface with two ectal spines and two mesal spines ( Fig. 3B–C View FIGURE 3 ).

Legs: Tarsi III and IV with a dense scopula. Tarsal formula: 3(2):4(3):5:5.

Color (specimen preserved in 80% ethanol): Body completely light yellow ( Fig. 1A–C View FIGURE 1 ).

Genitalia: Penis with distinguishable limits between pars basalis and pars distalis ( Fig. 4A View FIGURE 4 ). Pars basalis tubular, pars distalis slightly swollen at the glans penis level ( Fig. 4A View FIGURE 4 ). Apical edge laminar (i.e., dorsoventrally flat) with a well-defined basal constriction and a broadened, rounded, and ventrally concave edge forming a lamina apicalis ( Fig. 4A–D View FIGURE 4 ). Pars distalis with 17 spatula-shaped macrosetae: basally with a lateral row of five (right) and six (left) macrosetae ( Fig. 4A, C View FIGURE 4 ), lamina apicalis with one basal pair of macrosetae and two distal pairs of macrosetae ( Fig. 4B–D View FIGURE 4 ). Capsula externa in the everted state inflated with two elongated and curl apically titillators covered by digitiform projections on the inner surface ( Fig. 4B–C View FIGURE 4 ). Capsula interna formed by two laminar conductors broadened ventrally and apically pointed, and one laminar style apically with a pointed ventral projection ( Fig. 4C View FIGURE 4 ).

Major male (CASENT 9069465). Body measurements: Total body length 1.57, carapace length 0.62, scutum magnum length 1.31, carapace maximum width 1.00, abdominal scutum maximum width 1.11. Appendage measurements in Table 1.

Dorsum: Outline hourglass-shaped with Eta (η) shape, with a slightly accentuated constriction posterior to eye level ( Figs 5A View FIGURE 5 ; 6A View FIGURE 6 ). Carapace coarsely granulated, wider than long; frontal hump well-marked, rounded, and granulated; anterior border straight with two granules on each lateral margin ( Fig. 6A View FIGURE 6 ). Cheliceral sockets not marked ( Figs 5A View FIGURE 5 ; 6A View FIGURE 6 ). Eyes separated, located at the base of a wide and high ocularium, which exceeds the height of the abdominal scutum ( Figs 5C View FIGURE 5 ; 6D View FIGURE 6 ); ocularium occupies the posterior region of the carapace up to the area behind the frontal hump ( Figs 5A, C View FIGURE 5 ; 6A, D View FIGURE 6 ). Mesotergal areas coarsely granulated ( Fig. 6A, D View FIGURE 6 ). Mesotergal areas I–IV not well defined; sulci II–IV shallow and limited to the medial region ( Figs 5A, C View FIGURE 5 ; 6A, D View FIGURE 6 ). Mesotergal area I with two medial setiferous granules; mesotergal area II with a medial row of setiferous granules and one medial setiferous tubercle; mesotergal areas III–IV with a row of setiferous granules and two medial setiferous tubercles; tubercles in area IV more separated and slightly larger than those in area III ( Figs 5A View FIGURE 5 ; 6A, D View FIGURE 6 ). Mesotergal area V with a posterior row of setiferous granules and a medial setiferous tubercle ( Fig. 6A, D View FIGURE 6 ). Lateral margins of abdominal scutum with irregular longitudinal rows of granules ( Fig. 6A, D View FIGURE 6 ). Ozopore with an oval and narrow orifice with a descending channel that extends toward the posterior region ( Fig. 6D–E View FIGURE 6 ). Free tergites granulated, with a posterior row of setiferous granules and three medial setiferous tubercles ( Fig. 6A, D View FIGURE 6 ).

Venter: Coxae I–II with setiferous granules ( Figs 5B View FIGURE 5 ; 6B–C View FIGURE 6 ); anteroposterior borders of coxa III with a row of strong granules connecting with coxae II and IV, respectively; posterior border of the spiracular area and free sternites I–V with a row of setiferous granules; anal operculum with conspicuous setiferous granules ( Fig. 6B, D View FIGURE 6 ). Spiracles concealed by a bridge-like projection from distal coxa IV connecting to the posterior margin of the stigmatic area ( Fig. 6B–C View FIGURE 6 ).

Chelicerae: Basichelicerite with an elongated bulla and three dorsal setiferous granules on the proximal margin ( Figs 6A View FIGURE 6 ; 7E–F View FIGURE 7 ). Cheliceral hand with an ectal concavity, sparse frontal setae, prominent proximal rounded setiferous granules, and three distal setiferous tubercles: two large frontal and one smaller ectal ( Fig. 7E–G View FIGURE 7 ). Fixed finger with a protuberance; movable finger with two prominent teeth continued by small teeth ( Fig. 7F–G View FIGURE 7 ).

Pedipalps: Coxa dorsoproximally with one ectal and two mesal tubercles; ventral surface with three small tubercles ( Fig. 6A–B View FIGURE 6 ). Trochanter with one dorsal tubercle and one ventral setiferous granule ( Fig. 7A View FIGURE 7 ). Femur strongly curved; ventrally with two large proximal spines: proximal spine with a rectangular socket and long seta; distal spine with a curved and pointed socket and short seta ( Fig. 7A–B View FIGURE 7 ); ventromedially with one small and rounded mesal spine and one ectal rounded granule ( Fig. 7A–B View FIGURE 7 ). Patella distally with a small spine ( Fig. 7A View FIGURE 7 ). Tibia ventrally with two short mesal spines: medial with conical socket and long subapical seta, distal with short socket and apical seta ( Fig. 7A View FIGURE 7 ); three large ectal spines: proximal with thickened and short socket; medial and distal with a narrow and elongated socket and long subapical seta ( Fig. 7B View FIGURE 7 ). Tarsus shorter than tibia, ventrally with two ectal and mesal spines, proximal spines with longer sockets ( Fig. 7A–B View FIGURE 7 ). Spines distally with sparse microtrichia ( Fig. 7C–D View FIGURE 7 ).

Legs: unarmed ( Fig. 8A–D View FIGURE 8 ). Tarsi III–IV with a dense scopula ( Fig. 8E–F View FIGURE 8 ). Tarsal formula: 3(2):4(3):5:5. Color (specimen preserved in 80% ethanol): Body yellowish-brown, with dark brown reticulations on pedipalps, chelicerae, legs, and carapace ( Fig. 5A–B View FIGURE 5 ). Mesotergal areas, free tergites, and free sternites dark brown ( Fig. 5 A–C View FIGURE 5 ).

Genitalia: Penis with distinguishable limits between pars basalis and pars distalis ( Fig. 9A View FIGURE 9 ). Pars basalis tubular; pars distalis slightly swollen ( Fig. 9A–B, D, F, H View FIGURE 9 ). Apical edge laminar (i.e., flattened dorsoventrally) with a well-defined basal constriction and a broadened, rounded, and ventrally concave edge forming a lamina apicalis ( Fig. 9A–D, F–H View FIGURE 9 ). Pars distalis with 18 spatula-shaped macrosetae: basally with a lateral row of six macrosetae ( Fig. 9B, D, F, H View FIGURE 9 ), lamina apicalis with one basal pair of macrosetae and two subapical pairs of macrosetae ( Fig. 9B–H View FIGURE 9 ). Capsula externa with two titillators covered by digitiform projections on the inner surface ( Fig. 9A–B, E–H View FIGURE 9 ). Capsula interna formed by two laminar conductors broadened ventrally and apically pointed and one laminar style apically with a pointed ventral projection ( Fig. 9B, E, F View FIGURE 9 ).

Female (CASENT 9069463). Body measurements: Total body length 1.55, carapace length 0.51, scutum magnum length 1.15, maximum carapace width 0.83, maximum abdominal scutum width 1.03. Appendage measurements in Table 1. Female resembles both minor and major males in the armature of the scutum magnum but with lower tubercles on the abdominal scutum and free tergites. Female differs from males by having less development chelicerae ( Fig. 10A View FIGURE 10 vs. Fig. 10B–D View FIGURE 10 ), and smaller ocularium ( Fig. 10E View FIGURE 10 vs. Fig. 10F–H View FIGURE 10 ). Additionally, female differs by having thinner pedipalps with a less pronounced curvature in the femur ( Fig. 10E View FIGURE 10 vs. Fig. 10F–H View FIGURE 10 ). Tarsal formula 3(2):4(3):5:5.

Distribution: Lokobe Strict Nature Reserve, Nosy Be, Diana, Madagascar ( Fig. 11 View FIGURE 11 ). Spurious record in Mozambique, Tete (see further considerations).