Hapalotremus chespiritoi, Ferretti & Cavallo & Chaparro & Ríos-Tamayo & Seimon & West, 2018

Ferretti, Nelson, Cavallo, Patricio, Chaparro, Juan C., Ríos-Tamayo, Duniesky, Seimon, Tracie A. & West, Rick, 2018, The Neotropical genus Hapalotremus Simon, 1903 (Araneae: Theraphosidae), with the description of seven new species and the highest altitude record for the family, Journal of Natural History (J. Nat. Hist.) 52 (29 - 30), pp. 1927-1984 : 1968-1970

Hapalotremus chespiritoi sp. nov.

( Figures 23–26 , 37 )

Type material

Male holotype ( MUBI) from Peru, Canchis, Cusco, Sicuani , between Usicayos and Quetapalo (near Patambuco , 34 km northeast of Sicuani ) (- 14.1225 S, - 70.9517 W), 3773 m a .s .l., 5 February 2007, Juan C . Chaparro col .; paratype female ( MUBI), same data as holotype .

Etymology

The specific name is in honour of Roberto Gómez Bolaños (1929–2014), commonly known by his pseudonym ‘Chespirito’. He was a Mexican screenwriter, actor, comedian, film and television director, widely regarded as one of the most important Spanishlanguage humorists of the twentieth century. Curiously, the shape of the spermatheca of female of H. chespiritoi sp. nov. resembles the small vinyl antennae of ‘Chapulín Colorado’, a comical and bungling superhero created by R.G. Bolaños.

Diagnosis

Males of H. chespiritoi sp. nov. can be distinguished from those of the other species by the palpal bulb with a slightly curved and very thick embolus and a well-developed basal digitiform apophysis ( Figure 24a–d ). Females can be distinguished from those of all other species by the shape of the spermathecae with a basal portion much wider than apical; rounded apical median region and apical lateral projections very well developed ( Figure 26e ).

Description

Holotype male (MUBI): Total length (not including chelicerae and spinnerets) 34.6, carapace length 16.4, width 15.0, abdomen 17.5 long. Fovea transverse, straight, width 2.0.

Colour pattern (in alcohol): carapace pale brown with white long setae on margins, legs black with white setae on coxae, abdomen black with white setae on distal dorsal region and light yellow setae on urticating patch ( Figure 23a–c ).

Eyes: anterior eye row procurved, posterior recurved ( Figure 23d ). Eyes sizes and interdistances: AME 0.17, ALE 0.22, PME 0.20, PLE 0.18, AME–AME 0.32, AME–ALE 0.19, PME–PME 0.66, PME–PLE 0.13, ALE–PLE 0.10, Ocular tubercle length 1.6, width 2.0, clypeus 0.25. Labium length 2.0, width 2.5 with 14 cuspules ( Figure 23e ). Maxillae: right with 99 cuspules, left with 119 cuspules. Sternum length 6.3, width 6.2. Three pairs of sternal oval sigillae, first pair hardly visible, second and third pairs visible, third pair less than half its length from the margin ( Figure 23b ). Chelicerae with 12 welldeveloped teeth on promargin of furrow and 26 small teeth on retromargin.

Leg formula: IV> I> II> III. Length of legs and palpal segments (femur, patella, tibia, metatarsus, tarsus, total): I: 12.5, 8.0, 9.2, 10.2, 7.3, 47.2; II: 12.2, 6.8, 9.2, 9.3, 7.5, 45.0; III: 11.5, 6.6, 8.9, 10.9, 6.4, 44.3; IV: 13.8, 7.6, 11.5, 16.3, 7.2, 56.4; palp: 9.7, 6.0, 7.6, –, 4.2, 27.5. Field of spiniform setae on basal retrolateral coxal face of palp and legs I–IV. Spinnerets: PMS, 1.1 long; PLS, three-segmented, 6.6 long.

Scopulae: All tarsi densely scopulate and divided by conical long setae increasing in number from tarsus I to IV. Metatarsi I 2/3 scopulate and entire, II 3/4 scopulate and entire, III 1/4 scopulate and entire, IV with no scopulae. Dorsal face of all tarsi and cymbium with two parallel rows of non-plumose clavate trichobothria interspersed with filiform, separated by a row of long, thin setae.

Chaetotaxy (left side): Femora of palp and legs I–IV, 0; patellae; palp 0; I 1-1-2v; II 1v; III 1v; IV 1v, 1p, 1r; tibiae: palp 0; I 2-1-2-1v, 1-1r; II 2-1-1-1-2v, 1-1-1r; III 1-1d, 2-1-1-2v, 1-1-3- 1-2-1p, 2-1-1-2r; IV 2-1-1-2v, 1-1-1-1-1p, 1-1-2-1-1-2-1r; metatarsi I 1v; II 1-1-2v, 1-1p, 2-2- 1r; III 2d, 1-1-2v, 1-1-2p, 1-1-1-1-1r; IV 3-3-1-3v, 1-2-1-1p, 1-3-2-1r; tarsi I–IV, 0. Metatarsus I very curved at middle area ( Figure 23f ). Tibia I about 10% shorter than metatarsus I. Tibia I with two apophyses, which originated from a common base and branches are of almost equal size. The retrolateral branch conical bearing a short and strong spine on inner side; the prolateral branch digitiform bearing a short and strong spine on retrolateral side ( Figure 23g ). Flexion of metatarsus I between the two branches.

Palp: palpal tibia with a small retrolateral rounded process ( Figure 23h, i ). Palpal bulb base with a well-developed digitiform apophysis ( Figure 24a–d ); embolus very thick curved to the retrolateral face and prolateral keels strong and well-developed; PI welldeveloped beginning at basal ventral portion of embolus bearing a ventral medial crest pointed distally; PS less developed than PI ( Figure 24a, b, e ). Apical keel small, located below the apex of embolus ( Figure 24a ).

Urticating setae: Type III present and arranged in one dorsal posterior patch on the abdomen ( Figure 23c ).

Paratype female (MUBI): Total length (not including chelicerae and spinnerets), 34.8, carapace length, 15.6, width 13.0, abdomen 18.8 long. Fovea slightly procurved, width 2.1.

Colour pattern (in alcohol): carapace pale brown with white short setae on margins, legs black with white setae on coxae, abdomen light brown lacking most of setae and with light yellow setae on urticating patch ( Figure 25a–e ).

Eyes: anterior eye row procurved, posterior recurved ( Figure 26b ). Eyes sizes and interdistances: AME 0.20, ALE 0.32, PME 0.20, PLE 0.27, AME–AME 0.30, AME–ALE 0.25, PME–PME 0.68, PME–PLE 0.05, ALE–PLE 0.09. Ocular tubercle length 1.5, width 1.75, clypeus 0.25. Labium length 3.05, width 2.75 with 12 cuspules ( Figure 26a ). Maxillae: right with 116 cuspules, left with 111 cuspules. Sternum length 5.3, width 6.0. Three pairs of sternal oval sigillae, first pair hardly visible, second and third pairs visible, third pair almost next to the margin ( Figure 25b ). Chelicerae with 12 well-developed teeth on promargin of furrow and 23 small teeth on the retromargin.

Leg formula: IV> I> III> II. Length of legs and palpal segments (femur, patella, tibia, metatarsus, tarsus, total): I: 10.1, 7.0, 8.0, 7.5, 5.2, 37.8; II: 8.6, 6.1, 6.9, 7.3, 5.4, 34.3; III: 8.4, 5.8, 6.7, 8.9, 5.4, 35.2; IV: 9.8, 6.5, 9.5, 13.0, 7.1, 45.9; palp: 7.4, 4.5, 5.5, –, 6.6, 35.9. Field of spiniform setae on basal retrolateral coxal face of palp and legs I–IV. Spinnerets: PMS, 1.25 long; PLS, three-segmented, 4.0 long.

Scopulae: All tarsi densely scopulate and divided by conical long setae increasing in number from tarsus I to IV. Metatarsi I 1/2 scopulate divided by three lines of setae, II 1/2 scopulate divided by four lines of setae, III 1/4 scopulate divided by four lines of setae, IV with no scopulae. Dorsal face of all tarsi with two parallel rows of non-plumose clavate trichobothria interspersed with filiform, separated by a row of long, thin setae.

Chaetotaxy (left side): Femora; palp 0; I 0; II 0; III 1-1d; IV 1d, 1-1p; patellae; palp 0; I 0; II 0; III 0; IV 1p; tibiae: palp 1-2v, 1r; I 0; II 1v; III 1-1-2v, 2-2p, 1-1r; IV 1-1-1-2v, 1-1-1p, 1-1- 1r; metatarsi: I 1v; II 1-2v; III 1-1-1-2v, 1-1-1-1p, 1-1-1r; IV 1d, 1-1-3v, 1-1p, 1-1-2-1r; tarsi I– IV, 0.

Genitalia: Single spermathecal receptaculum with basal portion wider than apical; rounded apical median region and apical lateral projections well developed ( Figure 26e ).

Urticating setae: Type III present and arranged in one dorsal posterior patch on the abdomen ( Figure 25c ).

Distribution and habitat

Know only from the type locality at about 3700 m a.s.l. ( Figure 37 ).

Figures

Figure 23. (a–i) Hapalotremus chespiritoi sp. nov., male holotype (MUBI). (a) Carapace, dorsal view. (b) Sternum, ventral view. (c) Abdomen, dorsal view. (d) Eyes, dorsal view. (e) Labium and maxillae, ventral view. (f) Leg I, lateral view. (g) Tibial apophysis, ventral view. (h) Palpal tibia, ventral view. (i) Palpal tibia, retrolateral view. Arrows indicate the rounded process. Scale bar: a–c, g: 5 mm. d–f, h–i: 1 mm. Photos: Nelson Ferretti.

Figure 24. (a–e) Hapalotremus chespiritoi sp. nov., male holotype left palpal bulb (MUBI). (a) Prolateral view. (b) Retrolateral view. (c) Dorsal view. (d) Ventral view. (e) Embolus showing keels. A, apical keel; DA, digitiform apophysis; PI, prolateral inferior keel; PS, prolateral superior keel. Scale bar: 1 mm. Photos: Nelson Ferretti.

Figure 25. (a–e) Hapalotremus chespiritoi sp. nov., female paratype (MUBI). (a) Carapace, dorsal view. (b) Sternum, ventral view. (c) Abdomen, dorsal view. (d) Abdomen, ventral view. (e) Abdomen, lateral view. Scale bar: 5 mm. Photos: Nelson Ferretti.

Figure 26. (a–e) Hapalotremus chespiritoi sp. nov., female paratype (MUBI). (a) Labium, ventral view. (b) Eyes, dorsal view. (c) Tarsus IV, prolateral view. (d) Tarsus IV, ventral view. (e) Spermathecae, dorsal view. Scale bar: 1 mm. Photos: Nelson Ferretti.

Figure 37. Distribution map of Hapalotremus species from Peru.