Bowie dhole, Omelko & Fomichev, 2023

Omelko, Mikhail M. & Fomichev, Alexander A., 2023, A survey of Sumatran Ctenidae (Araneae). 2. Three new species of Bowie Jäger, 2022, Zootaxa 5353 (2), pp. 101-116 : 107-109

Bowie dhole sp. nov.

( Figs 19–36 , 55–57 )

Types. INDONESIA: Sumatra: North Sumatra Prov.: Holotype: ♁ ( ZMMU), Bukit Lawang Vil[lage]. [03°32′N, 98°7′E] , 200–250 m, 1988 (precise date unknown), unknown collector. Paratype: 1♀ ( ZMMU), together with the holotype .

Etymology. The specific name is derived from the local name of the red wolf [ Cuon alpinus (Pallas) ], a predatory beast that inhabits the mountainous regions of Sumatra Island.

Diagnosis. Males of Bowie dhole sp. nov. resembles B. argentipes , B. angigitanus , B. palembangensis , B. tonight and B. beruang sp. nov. by palp structures, such as embolus (Em), tegular apophysis (TO) and cymbial spur (CS). It can be differentiated from B. argentipes by long and thin cymbial spur (CS) (vs. shortened and thick; cf. Fig. 25 and Jäger 2022: fig. 518). The new species differs from B. angigitanus by 1) small cymbial retrolatero-proximal outgrowth (RO) (vs. large; cf. Fig. 24 and Jäger 2022: fig. 542), and 2) cymbial spur (CS) not reaching RTA in retrolateral view (vs. extending behind RTA; cf. Fig. 25 and Jäger 2022: fig. 543). The new species can be distinguished from B. palembangensis by the cymbial spur (CS) not reaching RTA in retrolateral view (vs. extending behind RTA; cf. Fig. 25 and Jäger 2012: fig. 172). Bowie dhole sp. nov. differs from B. tonight by the tegular apophysis (TA) with anterior width (AW) equal to posterior width (PW) (AW / PW ratio = 1) (vs. ratio = 1.14; cf. Fig. 28 and Jäger 2022: figs 545–546). For differences with B. beruang sp. nov. see diagnosis of this species above.

The epigyne of Bowie dhole sp. nov. is similar to that of B. tonight by the shape of its median plate (MP), but can be distinguished by the absence of transversal fold (vs. presence) and the distance between the lateral teeth (LT) being greater than the width of the medial plate (vs. distance is equal to plate width; cf. Fig. 33 and Jäger 2022: figs 552–553).

Description. Male ( Figs 19–20 ). Total length 14.4. Carapace 7.9 long, 6.3 wide. Opisthosoma 6.2 long, 4.1 wide. Carapace brown with broad silver median band, diamond-shaped in ocular area. Lateral bands absent. Fovea thin, black. Chelicerae dark brown, with three promarginal and four retromarginal teeth, denticles absent. Sternum yellow without pattern. Labium and endites yellow brown. Dorsal part of opisthosoma greenish gray with distinct yellowish band covered with white setae. Ventral part of opisthosoma greenish gray with light spots forming two V-marks. Spinnerets yellow proximally, dark gray distally.

Eye diameters: AME 0.36, ALE 0.24, PME 0.44, PLE 0.39; interdistances: AME–AME 0.17, AME–ALE 0.36, PME–PME 0.3, PME–PLE 0.41, AME–PME 0.07, ALE–PLE 0.26. Clypeus height at AME 0.29.

For palp and legs measurements see Table 5 . Legs brown.Tibiae I–IV with silver setae which is more pronounced on tibia I. For palp and leg spination see Table 6.

Palp as shown in Figs 23–32 . RTA large, hook-like, bifurcated in dorsal view. Cymbium with long, curved, sharply pointed retro-dorsal spur (CS), retrolatero-proximal outgrowth (RO) comparatively small. Tegular apophysis (TA) with large prolatero-proximad outgrowth (TO). Conductor (C) large, membranous. Embolus (Em) with sharp retrolateral (RP) and prolateral (PP) parts of its tip in ventral view and basal embolus hook (EH).

Female ( Figs 21–22 ). Total length 12.9. Carapace 6.7 long, 5.0 wide. Opisthosoma 6.1 long, 3.9 wide. Carapace dark brown (somewhat lighter than in males) with broad yellowish median band, diamond-shaped in ocular area. Lateral bands thin, divided into several irregular spots. Fovea thin, black. Chelicerae dark brown, almost black with 3 promarginal and 4 retromarginal teeth, denticles absent. Sternum yellow. Labium and endites dark brown. Dorsal part of opisthosoma brown gray with distinct yellowish cardiac mark. Ventral part of opisthosoma brown gray with light spots forming two V-marks. Spinnerets dark gray.

Eye diameters: AME 0.31, ALE 0.23, PME 0.39, PLE 0.41; interdistances: AME–AME 0.16, AME–ALE 0.39, PME–PME 0.26, PME–PLE 0.4, AME–PME 0.11, ALE–PLE 0.09. Clypeus height at AME 0.23.

For palp and legs measurements see Table 7 . Legs brown with gray annulations, which is more distinct in legs III–IV. For palp and leg spination see Table 8.

Epigyne as shown in Figs 33–36 . Epigyne as wide as long. Median plate (MP) with two rounded projections (Pr) medially. Lateral teeth (LT) small with sharp tips. Spermathecae (Sp) large, kidney-shaped.

Distribution. Type locality only ( Figs 55–57 ).

Figures

FIGURES 19–22. Bowie dhole sp. nov., male (19–20) and female (21–22) habitus. 19, 21—dorsal; 20, 22—ventral. Scale bars: 2 mm.

FIGURES 23–32. Bowie dhole sp. nov., palp (23–26), bulb (29–30), terminal part of embolus (31) and palpal tibia (32), male. 23, 27—prolateral; 24, 28, 31—ventral; 25, 29, 32—retrolateral; 26—dorsal; 30—anterior. Scale bars: 0.2 mm. Abbreviations:AW—anteriorwidth of TA, C—conductor,CS—cymbial spur,EH—embolus hook,Em—embolus,PW—posterior width of TA, PP—prolateral part of embolic tip, RO—retrolatero-proximal outgrowth, RP—retrolateral part of embolic tip, RTA—retrolateral tibial apophysis, TA—tegular apophysis, TO—tegular apophysis outgrowth.

FIGURES 33–36. Bowie dhole sp. nov. female genitalia, intact (33) and macerated (34–36). 33, 34—ventral, 35—dorsal, 36—posterior. Scale bars: 0.2 mm. Abbreviations: MP—median plate, FD—fertilization duct, LT—lateral tooth, Pr—median plate projection, Sp—spermatheca

FIGURES 55–57. Collecting localities of studied Bowie species. Circle—Bowie beruang sp. nov., triangle—B. dhole sp. nov., square—B. binturong sp. nov. The frame on Fig. 57 refers to the content of Fig. 56 and the frame on Fig. 56 refers to the content of Fig. 55.