Torrenticola reduncarostra Fisher & Dowling

Fisher, J. Ray, Fisher, Danielle M., Skvarla, Michael J., Nelson, Whitney A. & Dowling, Ashley P. G., 2017, Revision of torrent mites (Parasitengona, Torrenticolidae, Torrenticola) of the United States and Canada: 90 descriptions, molecular phylogenetics, and a key to species, ZooKeys 701, pp. 1-496 : 1

Torrenticola reduncarostra Fisher & Dowling sp. n.

Material examined.

HOLOTYPE (♀): from USA, Virginia, Washington County, Damascus; beside Rt. 58 just inside boundary of Mount Rogers National Recreation Area, (36°38'38"N, 81°45'45"W), 10 July 1990, by IM Smith, IMS900085A.

PARATYPES (8 ♀; 7 ♂): Alabama, USA: 1 ♂ from Clay County, beside Forest Route 649, 0.8 km northeast of road from Campbell Springs to Forest Route 600, (33°22'22"N, 85°52'52"W), 3 July 1990, by IM Smith, IMS900075A • Maine, USA: 1 ♀ and 1 ♂ from Aroostook County, Ashland; beside Rt. 11 at bridge over Aroostook River, (46°38'38"N, 68°24'24"W), 4 July 1989, by IM Smith, IMS890067 • New Brunswick, Canada: 2 ♀ and 1 ♂ from York County, beside Hwy. 8, 1.7 km north of road to Durham Bridge, (46°7'7"N, 66°36'36"W), 2 July 1989, by IM Smith, IMS890058 • New York, USA: 1♀ and 1 ♂ from Schuyler County, beside Town Line Road off Route 228, 0.6 km south of Perry City, (42°29'29"N, 76°42'42"W), 21 July 1990, by IM Smith, IMS900112A • Tennessee, USA: 1 ♀ from Monroe County, beside Forest Route 35, 2.0 km northeast of road from Rt. 165 to Miller Chapel Baptist Church, (35°21'21"N, 84°9'9"W), 5 July 1990, by IM Smith, IMS900078 • 2 ♀ and 2 ♂ from Monroe County, beside Forest Route 210, 1.8 km east of bridge at Bald River Falls, (35°19'19"N, 84°10'10"W), 5 July 1990, by IM Smith, IMS900079 • Virginia, USA: 1 ♂ (ALLOTYPE) from Washington County, Damascus; beside Rt. 58 just inside boundary of Mount Rogers National Recreation Area, (36°38'38"N, 81°45'45"W), 10 July 1990, by IM Smith, IMS900085A • 1 ♀ from Washington County, Damascus; beside Rt. 58 just inside boundary of Mount Rogers National Recreation Area, (36°38'38"N, 81°45'45"W), 10 July 1990, by IM Smith, IMS900085A

Type deposition.

Holotype (♀), allotype (♂), and some paratypes (5 ♀; 3 ♂) deposited in the CNC; other paratypes (3 ♀; 3 ♂) deposited in the ACUA.

Diagnosis.

Torrenticola reduncarostra are similar to species with similar dorsal patterning, such as the Rusetria “4-Plate” group ( T. dunni , T. glomerabilis , T. kittatinniana , T. pollani , T. rufoalba and T. shubini ), Neoanomala Group ( T. interiorensis and T. neoanomala ), and T. bondi , T. gorti , T. elongata , T. erectirostra , T. robisoni , T. irapalpa , T. racupalpa , T. skvarlai , and T. arktonyx . T. reduncarostra can be differentiated from all Torrenticola , except Erectirostra Group, by having an upturned rostrum. T. reduncarostra can be differentiated from T. erectirostra , T. karambita , and T. robisoni by lacking dentation on the rostrum (others have strong dentation on the lateral edge of the rostrum).

Description.

Female (Figure 218) (n = 5) (holotype measurements in parentheses when available) with characters of the genus with following specifications.

Dorsum - (610-665 (625) long; 420-450 (420) wide) ovoid with faint purple coloration separated into anterior and posterior portions, occasionally colorless. Anterio-medial platelets (120-130 (120) long; 55-57.5 (55) wide). Anterio-lateral platelets (175-205 (185) long; 57.5-67.5 (60) wide) free from dorsal plate. Dgl-4 approximately half-way between the edge of the dorsum and the muscle scars (distance between Dgl-4 280-315 (290)). Dorsal plate proportions: dorsum length/width 1.45-1.5 (1.49); dorsal width/distance between Dgl-4 1.40-1.50 (1.45); anterio-medial platelet length/width 2.18-2.27 (2.18); anterio-lateral platelet length/width 2.59-3.42 (3.08); anterio-lateral/anterio-medial length 1.46-1.58 (1.54).

Gnathosoma - Subcapitulum (330-340 (330) long (ventral); 240-255 (240) long (dorsal); 110-120 (120) tall) colorless. Rostrum (130-140 (132.5) long; 35-37.5 (35) wide) elongate and upturned. Chelicerae (345-360 (350) long) with curved fangs (55-60 (55) long). Subcapitular proportions: ventral length/height 2.75-3.09 (2.75); rostrum length/width 3.71-4.00 (3.79). Pedipalps with tuberculate ventral extensions on femora and genua. Palpomeres: trochanter (45-50 (47.5) long); femur (115-120 (115) long); genu (62.5-65 (62.5) long); tibia (67.5-72.5 (70) long; 23.75-26.25 (26.25) wide); tarsus (16.25-20 (17.5) long). Palpomere proportions: femur/genu 1.81-1.85 (1.84); tibia/femur 0.58-0.62 (0.61); tibia length/width 2.67-2.85 (2.67).

Venter - (740-800 (740) long; 470-515 (500) wide) colorless. Gnathosomal bay (145-165 (155) long; 65-70 (67.5) wide). Cxgl-4 subapical. Medial suture (25-35 (25) long). Genital plates (170-192.5 (170) long; 150-157.5 (155) wide). Additional measurements: Cx-1 (290-320 (305) long (total); 150-165 (155) long (medial)); Cx-3 (325-350 (330) wide); anterior venter (190-210 (190) long). Ventral proportions: gnathosomal bay length/width 2.07-2.46 (2.30); anterior venter/genital field length 1.07-1.24 (1.12); anterior venter length/genital field width 1.23-1.40 (1.23); anterior venter/medial suture 6.00-8.10 (7.60).

Male (Figure 219) (n = 5) (allotypic measurements in parentheses when available) with characters of the genus with following specifications.

Dorsum - (480-580 (525) long; 295-360 (335) wide) ovoid with faint purple coloration separated into anterior and posterior portions, occasionally colorless. Anterio-medial platelets (95-115 (115) long; 42.5-52.5 (50) wide). Anterio-lateral platelets (165-195 (170) long; 52.5-55 (52.5) wide) free from dorsal plate. Dgl-4 approximately halfway between the edge of the dorsum and the muscle scars (distance between Dgl-4 215-255 (220)). Dorsal plate proportions: dorsum length/width 1.51-1.68 (1.57); dorsal width/distance between Dgl-4 1.37-1.52 (1.52); anterio-medial platelet length/width 2.19-2.30 (2.30); anterio-lateral platelet length/width 3.14-3.71 (3.24); anterio-lateral/anterio-medial length 1.48-1.79 (1.48).

Gnathosoma - Subcapitulum (255-300 (290) long (ventral); 195-220 (207.5) long (dorsal); 87.5-95 (95) tall) colorless. Rostrum (102.5-120 (110) long; 27.5-32.5 (30) wide) elongate and upturned. Chelicerae (250-300 (300) long) with curved fangs (45-55 (55) long). Subcapitular proportions: ventral length/height 2.91-3.16 (3.05); rostrum length/width 3.54-3.73 (3.67). Pedipalps with tuberculate ventral extensions on femora and genua. Palpomeres: trochanter (40-42.5 (42.5) long); femur (90-105 (102.5) long); genu (52.5-60 (58.75) long); tibia (62.5-72.5 (67.5) long; 22.5-25 (25) wide); tarsus (15-17.5 (17.5) long). Palpomere proportions: femur/genu 1.69-1.83 (1.74); tibia/femur 0.66-0.72 (0.66); tibia length/width 2.70-3.11 (2.70).

Venter - (595-710 (650) long; 345-410 (370) wide) colorless. Gnathosomal bay (122.5-145 (137.5) long; 57.5-67.5 (57.5) wide). Cxgl-4 subapical. Medial suture (75-105 (85) long). Genital plates (135-150 (140) long; 100-105 (102.5) wide). Additional measurements: Cx-1 (250-280 (270) long (total); 130-140 (135) long (medial)); Cx-3 (270-300 (295) wide); anterior venter (222.5-257.5 (245) long). Ventral proportions: gnathosomal bay length/width 1.96-2.39 (2.39); anterior venter/genital field length 1.53-1.81 (1.75); anterior venter length/genital field width 2.23-2.45 (2.39); anterior venter/medial suture 2.45-3.19 (2.88).

Immatures unknown.

Etymology.

Specific epithet ( reduncarostra ) refers to the rostrum, which is curved upwards anteriorly, a rare condition outside of the Erectirostra Group (reduncus, L. bent backward; rostrum, L. snout).

Distribution.

Appalachians (Figure 217).

Remarks.

Unfortunately, we were unable to acquire fresh material of Torrenticola reduncarostra and therefore this species is not included in our phylogenetic analyses. However, we were able to examine morphology with material preserved in GAW. The overall appearance, small size, and elongate, ovoid body shape are consistent with placing this species in the Raptor Complex and within the Elongata Identification Group.