Monterella, GOODNIGHT & GOODNIGHT, 1944

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 : 854-856

publication ID

https://doi.org/ 10.1111/zoj.12299

persistent identifier

https://treatment.plazi.org/id/03CA87F9-A24E-FFB1-FF73-FB57C3AFFAE6

treatment provided by

Felipe

scientific name

Monterella
status

 

MONTERELLA GOODNIGHT & GOODNIGHT, 1944

STAT. REV.

Monterella Goodnight & Goodnight, 1944: 5 .

Karos: Goodnight & Goodnight, 1953: 20 (in part. generic synonymy transfer by implication).

Distribution: Central part of the state of Nuevo León, Mexico.

Type species: Monterella tuberculata Goodnight & Goodnight, 1944 , by original designation.

Included species: Monotypic.

Diagnosis: Scutum subrectangular ( Fig. 24B View Figure 24 ). Ocularium in the middle of prosoma, very low, unarmed ( Figs 24C View Figure 24 , 25C View Figure 25 ). Femur IV in males slightly thicker than in females ( Fig. 25A View Figure 25 ). Stigmatic area longer in males ( Fig. 25B View Figure 25 ). Male genitalia: pars distalis not swollen in the middle portion, apical margin with a median notch. With more than ten pairs of lateral setae, small, more than seven pairs of ventral microsetae along lateral margins of pars distalis. Two pairs of parastylar setae. Follis barely longer than wide. Spiniform projections small, not clearly visible ( Fig. 26 View Figure 26 ).

Comparisons: The male genitalia are and quite different from those of the Karos genus-group. The pars distalis is the most ornate, with high number of lateral and ventral microsetae. Also, the general morphological aspect in addition to the male genitalia make it easily recognizable.

MONTERELLA TUBERCULATA GOODNIGHT & GOODNIGHT, 1944 COMB. REST.

( FIGS 24–26 View Figure 24 View Figure 25 View Figure 26 , 57 View Figure 57 , 61F View Figure 61 )

Monterella tuberculata Goodnight & Goodnight, 1944: 5 , figs 1–3 (description of male).

CLADISTIC ANALYSIS OF KAROS 855

Karos tuberculatus: Goodnight & Goodnight, 1953: 20 (by implication); Kury & Cokendolpher, 2000: 155; Kury, 2003: 239.

Type locality: MEXICO: Nuevo León: Municipio Garza García, Chipinque (25°33′N, 100°18′W) GoogleMaps .

Material examined: MEXICO: Nuevo León: 1 ♂ [ TMM (26.v.1980; W. Elliot)] (25°15′45″N, 100°09′38.98″W). Municipio Santiago, Cave without name, Potrero Redondo GoogleMaps . 2 ♀ [ TMM (17.ii.1973; R. Mitchell and S. Wiley)] (25°26′48.98″N, 100°05′56.97″W). Municipio Santiago, Cueva de La Boca, 6 km SE from Villa Santiago GoogleMaps . 2 ♀ and 4 juveniles [ TMM (2.vii.2000; P. Sprouse)] (25°33′N, 100°18′W). Municipio Garza García, Cueva de San Francisco de Asis, Chipinque GoogleMaps . 1 ♂ [ TTU (??. ix.1971; D. Honca)] (25°15′45″N, 100°09′38.98″W). Municipio Santiago, Redondo Pit Cave , 40 km S of Monterrey. GoogleMaps

Other material: MEXICO: Nuevo León: ♂ holotype [ AMNH (15.vii.1942; D. Peláez, C. Bolívar, F. Bonet and B. Osorio)], Chipinque, Monterrey, not examined .

Diagnosis: See generic diagnosis.

Redescription: Male: Measurements: scutum length 4.0, maximum scutum width 3.4. Legs. I 2.45/0.45/1.75/ 2.30, II 3.80/1.35/2.70/3.10, III 3.25/1.10/2.35/3.20, IV 4.05/1.50/3.30/4.10. Dorsum. Scutum subrectangular, prosoma slightly narrower than opisthosoma ( Fig. 24B View Figure 24 ). Dorsum covered densely by rounded tubercles, without armature on all mesotergal areas ( Fig. 24A, B View Figure 24 ). Ocularium in the middle of prosoma, low ( Figs 24C View Figure 24 , 25C View Figure 25 ). Anterior portion of prosoma slightly elevated. Lateral clear areas projected in teardrop-shape ( Fig. 61F View Figure 61 ), lateral clear areas of apices of area V displaced from vertices, small. Clear areas present on free tergites I and II, small, teardrop-shaped. Venter. Covered by rounded tubercles, similar in size. Stigmatic area elongated, with the lateral margins straight. Coxa IV with small dorsoectal spine. Pedipalps. Patella with three mesal spiniform tubercles. Legs. All legs similar in size, thickness, and ornamentation, covered by rounded tubercles, similar to those on dorsum. Tibiae, metatarsi, and tarsi with numerous small setae. Trochanter III globular. Femur IV slightly curved ( Fig. 25A View Figure 25 ). Metatarsus II without clear annuli. Tarsal count 4(2):6(3):6:6. Male genitalia. Pars distalis not differentiated of the pars basalis, ventral plate not dorsoventrally compressed. Apical margin with a median notch. Eleven to 12 pairs of lateral setae, cylindrical, very small. Three pairs of parastylar setae, laterobasal to follis ( Fig. 26C View Figure 26 ). Spiniform projections visible. Nine to ten pairs of ventral microsetae, along lateral margins of pars distalis. Lateral projection of follis inconspicuous ( Fig. 26 View Figure 26 ). Female: Measurements: scutum length 4.0, maximum scutum width 3.4. Very similar to male, with the following differences: sternum shorter, legs IV thinner ( Fig. 25B View Figure 25 ), tarsal count 4(2):6(3):6:6.

Taxonomic accounts: Goodnight & Goodnight (1944) mentioned that dorsal area IV in the middle portion is divided into two parts. In the material examined, some specimens have no median ornamentation in this area, others have an inconspicuous sulcus, and finally, others have complete ornamentation, but never area IV divided into two parts.

TMM

Texas Memorial Museum

R

Departamento de Geologia, Universidad de Chile

TTU

Texas Tech University, Museum

AMNH

American Museum of Natural History

V

Royal British Columbia Museum - Herbarium

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Opiliones

Family

Stygnopsidae

Loc

Monterella

Cruz-López, Jesús A. & Francke, Oscar F. 2015
2015
Loc

Karos: Goodnight & Goodnight, 1953: 20

Goodnight CJ & Goodnight ML 1953: 20
1953
Loc

Karos tuberculatus:

Kury AB 2003: 239
Kury AB & Cokendolpher JC 2000: 155
Goodnight CJ & Goodnight ML 1953: 20
1953
Loc

Monterella

Goodnight CJ & Goodnight ML 1944: 5
1944
Loc

Monterella tuberculata

Goodnight CJ & Goodnight ML 1944: 5
1944