Chapulobunus poblano, Cruz-López & Francke, 2015

Cruz-López, Jesús A. & Francke, Oscar F., 2015, Cladistic analysis and taxonomic revision of the genus Karos Goodnight & Goodnight, 1944 (Opiliones, Laniatores, Stygnopsidae), Zoological Journal of the Linnean Society 175 (4), pp. 827-891 : 860-862

CHAPULOBUNUS POBLANO SP. NOV.

( FIGS 32–34 , 58 , 60H , 61G , 63A, J, K , 64K )

Type material: MEXICO: Puebla: ♂ holotype, and 1 ♂ and 3 ♀ paratypes [ CNAN-T0795 and CNAN- T0796 (1.ix.2009; O. Francke and A. Valdez)] (19°51′56.80″N, 97°33′05.58″W). Municipio Zacapoaxtla, Estación de microondas Tomaquillo .

Material examined: MEXICO: Puebla: 1 ♀ [ CNAN (30.ix.2006; O. Francke, A. Valdez, and H. Montaño)] (19°48′46.80″N, 97°25′0.37″W). Municipio Atempan, 1 km SE of Tacopan. Hidalgo: 6 ♂ and 6 ♀ [ CNAN (23.ix.2006; O. Francke, A. Valdez, and H. Montaño)], (20°8′30.01″N, 98°10′44.4″W). Municipio Acaxochitlán , 2 km E of Acaxochitlán.

Etymology: The specific epithet is a noun in apposition, derived from the Spanish word poblano , which means originating from the state of Puebla, Mexico. Diagnosis: Dark brown species. Ocularium spiniform, with long median spine ( Fig. 32 ). Ventral ornamentation of leg IV in males consists of big spiniform tubercles, two mesal on femur and five to six along tibia ( Fig. 33A ). Males with bulge on anal plate ( Fig. 63A ). Male genitalia: with six to nine pairs of lateral setae, three laterobasal pairs of parastylar setae. Lateral projection of follis thin, pointed distally ( Fig. 34 ).

Description

Male holotype: Measurements: scutum length 4.4, maximum scutum width 4.2. Legs. I 1.90/0.65/1.40/ 1.65, II 2.90 /1.00/2.20/2.35, III 2.70 /1.00/2.00/2.25, IV 3.45 /1.25/3.25/3.45. Dorsum. Scutum covered by nu- merous rounded tubercles ( Fig. 32 ). Ocularium with a acute median spine ( Fig. 32C ). Extra row of pegs composed of six to seven pegs, sometimes bifid ( Fig. 32B ). Spine on area II lower than the ocularium, spine on area III with similar height to ocularium, noticeably bent backwards ( Fig. 33C ). Sulcus between areas III and IV almost absent, vestigial. Lateral clear areas on scutum projected in semi-teardrop shape, project- ed in apices of area V and free tergites I and II, teardrop-shaped, absent in free tergite III. Free tergites with median row of tubercles. Venter. Finely covered by small, rounded tubercles. Stigmatic area inverse ‘Y’ shaped ( Fig. 33B ). Coxa IV with one dorsoectal spiniform tooth. Ornamentation of the anal plate heterogeneous ,

862 J. A. CRUZ-LÓPEZ AND O. F. FRANCKE

with median bulge rounded ( Fig. 63A ). Pedipalps. Patella with two mesal spiniform tubercles. Legs. I and II noticeably thinner and less ornate than the posterior legs. Femora III and IV curved, with ventral ornamentation increasing in size distally. Femur with two spiniform tubercles on ventromesal side, tibia with six or seven spiniform tubercles along the ventral side. Femur and tibia IV swollen ( Fig. 33A ). Tarsal count 4(2):5(2):6:6. Male genitalia. Pars distalis swollen in the middle, apical margin convex, rounded. Six to nine pairs of lateral setae. Three pairs of parastylar setae laterobasal to follis. Spiniform projections noticeably exposed. Four to five pairs of ventral microsetae, forming an irregular row along ventrolateral margin of pars distalis. Lateral projection of follis lobular, pointed distally ( Fig. 34 ). Female: Measurements: scutum length 4.3, maximum scutum width 4.1. Similar to male, with the following differences: ventral armature and thickness of femur and tibia IV reduced ( Fig. 33A ). Tarsal count 4(2):5/6(3):5/6:6.

Natural history: Similar to Chapulobunus unispinosus .

Figures

Figure 32. Chapulobunus poblano sp. nov. A, habitus, dorsal view. B, scutum, dorsal view. C, ocularium, frontal view. Scale bars: A = 5 mm, B = 2.5 mm, C = 1 mm.

Figure 33. Chapulobunus poblano sp. nov. A, legs IV, mesal view. B, habitus, ventral view. C, habitus, lateral view. Scale bars: A = 3.3 mm, B = 2.5 mm, C = 2 mm. The dark lines on (B) indicate the stigmatic area.

Figure 34. Chapulobunus poblano sp. nov., male genitalia. A, dorsal view. B, ventral view. C, lateral view. White arrows indicate ventral microsetae in (B) and parastylar setae in (C).

Figure 58. Distribution map of the species of the Karos genus-group, continued. Black circle, Montabunus foliorum; black square, Karos hexasetosus sp. nov.; white square with black outline, Karos monjarazi sp. nov.; black triangles, Potosa dybasi; white triangle with black outline, Potosa reddelli sp. nov.; black crosses, Chapulobunus poblano sp. nov.

Figure 60. A, ventral view of metatarsus I in male of Potosa dybasi; arrow indicates glandular opening. B, ventral view of metatarsus I in male of Potosa reddelli sp. nov.; arrow indicates glandular opening. C, swollen apical portion on femur II in male of Huasteca gratiosa. D, ventral view of pars distalis of Karos barbarikos; arrows indicate ventral microsetae. E, detail of ventral microsetae of pars distalis of Karos projectus. F, ventral view of pars distalis of Karos singularis sp. nov.; arrows indicate ventral microsetae. G, detail of apical portion of follis of Montabunus foliorum; arrow indicates the lateral projection of follis. H, detail of apical portion of follis of Chapulobunus poblano sp. nov.; arrow indicates the lateral projection of follis. I, apical portion of follis of Chapulobunus unispinosus; arrow indicates the lateral projection of follis.

Figure 61. A, detail of one of the lateral clear areas forming tubercles on scutum of Crettaros santibanezi sp. nov. B, detail of one of the lateral clear areas projected in tubercles on scutum of Karos singularis sp. nov. C, detail of one of the lateral clear areas projected in tubercles on scutum of Karos tersum sp. nov. D, detail of one of the lateral clear areas projected in tubercles on scutum of Huasteca silhavyi sp. nov. E, detail of one of the lateral clear areas projected in tubercles on scutum of Montabunus foliorum. F, detail of one of the lateral clear areas projected in tubercles on scutum of Monterella tuberculata. G, extra row of pegs in Chapulobunus poblano sp. nov., indicated by arrows. H, dorsal apophyses on trochanter II in male of Karos singularis sp. nov. I, detail of mesotergal areas III and IV in Montabunus foliorum; dotted lines indicate the sulcus between these areas. J, detail of mesotergal areas III and IV on Chapulobunus unispinosus; dotted lines indicate the sulcus between these areas. These images are not at the same scale.

Figure 63. A, dorsal view of the anal bulge on Chapulobunus poblano sp. nov.; arrow indicates the bulge. B, lateral view of Huasteca silhavyi sp. nov., line indicates the very high lateral channel area. C, laterodorsal view of scutum of Crettaros valdezi sp. nov., showing the median humps on areas II and III indicated by dotted circles. D, posterodorsal view of scutum of Crettaros santibanezi sp. nov., showing the median humps on areas II and III indicated by dotted circles. E, dorsal view of trochanter IV of Karos barbarikos; arrow indicates the tridentate apophysis. F, anterodorsal view of scutum of Karos barbarikos, the black points mark the tubercles forming a ‘V’. G, dorsal ornamentation of Karos tersum sp. nov. showing the transversal row of tubercles on mesotergal areas; transversal row II indicated by black dots. H, detail of the ventral ornamentation on femur IV of Karos barbarikos. I, detail of the ectal ornamentation on tibia IV of Karos barbarikos; arrows indicate the spiniform tubercles. J, detail of the ventral ornamentation on leg IV in Chapulobunus poblano sp. nov. K, detail of the two apical spines on femur IV in Chapulobunus poblano sp. nov. These images are not at the same scale.

Figure 64. A, mesodorsal view of pedipalp femur and patella of Huasteca silhavyi sp. nov.; arrows indicate the setiferous tubercles on mesal side of these segments. B, dorsal view of pedipalp femur of Karos barbarikos; arrow indicates the mesodistal setiferous tubercle. C, apical portion of metatarsus IV of Karos singularis sp. nov., the circle indicates the swollen area. D, dorsal view of pars distalis of Karos barbarikos; line indicates the exposed base of the follis. E, dorsal view of pars distalis of Philora tuxtlae; line indicates the base of the follis in apical depression. F, dorsal view of pars distalis of Paramitraceras granulatum; arrows indicate the pars distalis width/follis width ratio. G, dorsal view of pars distalis of Crettaros valdezi sp. nov.; arrows indicate the pars distalis width/follis width ratio. H, ventral view of pars distalis of Chapulobunus unispinosus; arrow indicates the width at the middle of the ventral plate. I, ventral view of pars distalis of Mictlana inops the white arrow indicates the slight width in the middle of ventral plate, the black dotted line indicates the apical end of ventral plate. J, ventral view of pars distalis of Karos barbarikos, the white dotted line indicates the apical end of ventral plate. K, ventral view of pars distalis of Chapulobunus poblano sp. nov., the white dotted line indicates the apical end of ventral plate. L, dorsal view of pars distalis of Potosa dybasi; arrows indi-