Petrobia (Tetranychina) cardi Chaudhri, W. M., 1972

Kamran, Muhammad & Alatawi, Fahad Jaber, 2025, A new species of the genus Petrobia Murray (Prostigmata, Tetranychidae) and complementary description of Petrobia cardi Chaudhri, Biodiversity Data Journal 13, pp. e 141566-e 141566 : e141566-

Petrobia (Tetranychina) cardi Chaudhri, W. M., 1972

Materials

Type status: Other material. Occurrence: catalogNumber: KSMAAS- 23 - Tet-Pet- 01 - Species record ; recordedBy: M. Kamran; individualCount: 1; sex: Female; lifeStage: adult; occurrenceID: B47E3CCE-28BE-57E4-B979-A83473BC0A25; Taxon: scientificName: Petrobia cardi; nameAccordingTo: Chaudhri, W., 1972. Mites of the genus Petrobia. I. Description of three new species of mites from Pakistan (Tetranychidae); kingdom: Animalia; phylum: Arthropoda; class: Arachnida; order: Prostigmata; family: Tetranychidae; genus: Petrobia; subgenus: Tetranychina; Location: country: Pakistan; stateProvince: Kashmir; verbatimCoordinates: 34 ° 34.030 ' N 73 ° 53.478 ' E; decimalLatitude: 34.56717; decimalLongitude: 73.8913; georeferenceProtocol: GPS; Identification: identifiedBy: Muhammad Kamran; dateIdentified: 2023; Event: samplingProtocol: shaking plant foliage; eventDate: 18 / 7 / 2023; habitat: wild grasses; Record Level: language: en; collectionCode: Mites; basisOfRecord: Slide Mounted Specimen

Type status: Other material. Occurrence: catalogNumber: KSMAAS- 23 - Tet-Pet- 02 - Species record ; recordedBy: M. Kamran; individualCount: 1; sex: Female; lifeStage: adult; occurrenceID: B9BE40B9-ADF8-5D3C-9F27-3E08117BA076; Taxon: scientificName: Petrobia cardi; nameAccordingTo: Chaudhri, W., 1972. Mites of the genus Petrobia. I. Description of three new species of mites from Pakistan (Tetranychidae); kingdom: Animalia; phylum: Arthropoda; class: Arachnida; order: Prostigmata; family: Tetranychidae; genus: Petrobia; subgenus: Tetranychina; Location: country: Pakistan; stateProvince: Kashmir; verbatimCoordinates: 34 ° 34.030 ' N 73 ° 53.478 ' E; decimalLatitude: 34.56717; decimalLongitude: 73.8913; georeferenceProtocol: GPS; Identification: identifiedBy: Muhammad Kamran; dateIdentified: 2023; Event: samplingProtocol: shaking plant foliage; eventDate: 18 / 7 / 2023; habitat: wild grasses; Record Level: language: en; collectionCode: Mites; basisOfRecord: Slide Mounted Specimen

Type status: Other material. Occurrence: catalogNumber: KSMAAS- 23 - Tet-Pet- 03 - Species record ; recordedBy: M. Kamran; individualCount: 1; sex: Male; lifeStage: adult; occurrenceID: 74034B49-36C1-5800-A65B-C2F672E60511; Taxon: scientificName: Petrobia cardi; nameAccordingTo: Chaudhri, W., 1972. Mites of the genus Petrobia. I. Description of three new species of mites from Pakistan (Tetranychidae); kingdom: Animalia; phylum: Arthropoda; class: Arachnida; order: Prostigmata; family: Tetranychidae; genus: Petrobia; subgenus: Tetranychina; Location: country: Pakistan; stateProvince: Kashmir; verbatimCoordinates: 34 ° 34.030 ' N 73 ° 53.478 ' E; decimalLatitude: 34.56717; decimalLongitude: 73.8913; georeferenceProtocol: GPS; Identification: identifiedBy: Muhammad Kamran; dateIdentified: 2023; Event: samplingProtocol: shaking plant foliage; eventDate: 18 / 7 / 2023; habitat: wild grasses; Record Level: language: en; collectionCode: Mites; basisOfRecord: Slide Mounted Specimen

Type status: Other material. Occurrence: catalogNumber: KSMAAS- 23 - Tet-Pet- 04 - Species record ; recordedBy: M. Kamran; individualCount: 1; sex: Female; lifeStage: adult; occurrenceID: 7657BEF8-5E9F-5D79-9B43-4E2C47188171; Taxon: scientificName: Petrobia cardi; nameAccordingTo: Chaudhri, W., 1972. Mites of the genus Petrobia. I. Description of three new species of mites from Pakistan (Tetranychidae); kingdom: Animalia; phylum: Arthropoda; class: Arachnida; order: Prostigmata; family: Tetranychidae; genus: Petrobia; subgenus: Tetranychina; Location: country: Pakistan; stateProvince: Kashmir; verbatimCoordinates: 34 ° 37.910 ' N 73 ° 55.146 ' E; decimalLatitude: 34.63183; decimalLongitude: 73.91911; georeferenceProtocol: GPS; Identification: identifiedBy: Muhammad Kamran; dateIdentified: 2023; Event: samplingProtocol: shaking plant foliage; eventDate: 18 / 7 / 2023; habitat: wild grasses; Record Level: language: en; collectionCode: Mites; basisOfRecord: Slide Mounted Specimen

Type status: Other material. Occurrence: catalogNumber: KSMAAS- 23 - Tet-Pet- 05 - Species record ; recordedBy: M. Kamran; individualCount: 1; sex: Female; lifeStage: adult; occurrenceID: 99EA115D-E88E-5B62-A1D7-55D10CEDD3DD; Taxon: scientificName: Petrobia cardi; nameAccordingTo: Chaudhri, W., 1972. Mites of the genus Petrobia. I. Description of three new species of mites from Pakistan (Tetranychidae); kingdom: Animalia; phylum: Arthropoda; class: Arachnida; order: Prostigmata; family: Tetranychidae; genus: Petrobia; subgenus: Tetranychina; Location: country: Pakistan; stateProvince: Kashmir; verbatimCoordinates: 34 ° 37.910 ' N 73 ° 55.146 ' E; decimalLatitude: 34.63183; decimalLongitude: 73.91911; georeferenceProtocol: GPS; Identification: identifiedBy: Muhammad Kamran; dateIdentified: 2023; Event: samplingProtocol: shaking plant foliage; eventDate: 18 / 7 / 2023; habitat: wild grasses; Record Level: language: en; collectionCode: Mites; basisOfRecord: Slide Mounted Specimen

Description

Female (n = 4) Body broadly oval, Length including gnathosoma 700 (690‒715); idiosoma (v 2 - h 1) 583 (575‒590) long, c 3 - c 3 507 (500‒515) wide; length of legs (from trochanter to distal end of tarsus): leg I 1298 (1275‒1305); leg II 570 (565‒578); leg III 664 (655‒670), leg IV 1040 (1033‒1050); leg I / v 2 - h 1: 2.22 (2.20–2.24).

Dorsum (Fig. 5 ). Propodosomal shield well defined, densely punctate, two pairs of eyes; lateral propodosoma with longitudinal to oblique granulated striations, setae sc 1 on prodorsal shield; opisthosomal striae transverse medially between setae c 1 - h 1, except sub-medially changing to inverted v-shaped striation pattern just posterior to setae d 1, laterally with longitudinal to oblique irregular striations, dorsal striae lobed and closely-spaced. All dorsal setae long robust, serrated and set on strong tubercles, tubercles of setae c 1, d 1 and e 1 well apart, while of setae f 1 contiguous; lengths of dorsal setae (without tubercles): v 2 95 (90‒98), sc 1 139 (130‒144), sc 2 88 (83‒90), c 1 183 (176‒185), c 2 164 (158‒169), c 3 82 (78‒88), d 1 188 (180‒193), d 2 172 (167‒179), e 1 183 (176‒188), e 2 175 (168‒177), f 1 180 (181‒190), f 2 131 (126‒138), h 1 90 (90‒97). Distances between dorsal setae v 2 - h 1 583 (575‒590), v 2 - v 2 82 (76‒85), sc 1 - sc 1 118 (115‒122), sc 2 - sc 2 355 (345‒360), c 1 - c 1 82 (80‒89), c 1 - c 2 66 (66‒69), d 1 - d 1 65 (60–68), d 1 - d 2 98 (94‒99), e 1 - e 1 114 (110–116), e 1 - e 2 28 (27‒30), f 1 - f 1 45 (42‒47), f 2 - f 2 155 (150‒158), h 1 - h 1 98 (90–98), c 1 - d 1 75 (73‒78), d 1 - e 1 98 (93‒99), e 1 - f 1 85 (82‒86), f 1 - f 2 106 (102‒109), f 1 - h 1 124 (120‒126).

Venter (Fig. 6 ). Integument between setae 1 a – 3 a with transverse dotted striae, between 3 a to 4 a with longitudinal striae, anterior of genito-anal area with longitudinal striae. Striae on venter lobed. Lengths of setae: 1 a 49 (45‒49), 1 b 65 (55–65), 1 c 48 (44‒48), 2 b 26 (25‒27), 2 c 28 (24‒28), 3 a 37 (35‒38), 4 a 36 (35‒38), 3 b 20 (19‒20), 4 b 20 (19‒20), one pair of aggenital setae (ag) 34 (32‒34), two pairs of genital setae, g 1 26 (26‒27), g 2 26 (25‒27) and three pairs of anal setae (ps 1‒3), ps 1 20 (20‒21), ps 2 19 (18‒19), ps 3 21 (18‒21), h 2 26 (24‒26), h 3 25 (23‒25). Spermatheca elongated thread-like.

Gnathosoma Stylophore (Fig. 5 b) anteriorly rounded, peritremes distally slightly anastomosed forming heart-shaped globular structure, 24 long, 12 wide; ventral infracapitulum with one pair of adoral setae or 10 (9‒10) and one pair of subcapitular setae m 31 (29‒31). Palp five-segmented (Fig. 8 ), palptarsus with one solenidion ω 6 (5‒8), three eupathia ul' ' ζ 8 (7‒9), ul' ζ 7 (6‒8), sul 9 (7‒9) and three setiform setae a 10 (9‒11), b 12 (11‒13), c 13 (10‒13); palp tibia with three setae d 28 (27‒30), l' 18 (15‒19), l' ' 18 (17‒20) and one claw bifid distally, palp genu with one simple seta l' ' 27 (25‒28) and palp femur with one serrated seta d 32 (29‒30) (similar to dorsal setae).

Legs (Fig. 7 ). Leg I (trochanter to distal end of tarsus) two times longer than the length of idiosoma. Length of leg I (trochanter to tip of tarsus) 1293 (1220‒1293), leg II 570 (560‒575), leg III 660 (520‒660, leg IV 1030 (981‒1032); length of leg segments, Leg I (trochanter 40‒45, femur 490‒513, genu 55‒60, tibia 470‒495, tarsus 165‒180; leg IV trochanter 50 (46‒50), femur 352 (340‒355), genu 72 (65‒75), tibia 400 (385‒400), tarsus 155 (145‒155). Leg segment setal formula as follows: coxae 2-2 - 1 - 1; trochanters 1-1 - 1 - 1; femora 9-7 - 5 - 5; genua 4-5 - 5 - 5; tibiae 24 + 1 φ- 11-11 - 11; tarsi 26 + 1 ω + 2 dup- 15 + 1 dup- 14 + 1 dup- 14 + 1 dup; solenidia on leg I Iω ” 50 (48‒50), IIω ” 53 (50‒53), IIIω’ 30 (29‒30), IV ω’ 31 (30‒31). Empodia I – IV with true claws pad-like, empodial claws bearing two rows of ventrally directed hairs.

Male (n = 1). Body oval elongate, much shorter than female, including gnathosoma (adoral setae to h 2) 376 long, excluding gnathosoma (v 2 - h 1) 251 long, c 3 - c 3 222 wide; length of legs (from trochanter to distal end of tarsus): leg I 1164; leg II 508; leg III 556, leg IV 820.

Dorsum (Fig. 9 ). Propodosomal shield well defined, densely punctate, two pairs of eyes; lateral propodosoma with longitudinal to oblique granulated (dotted) striations, setae sc 1 on prodorsal shield; opisthosomal striae transverse medially between setae c 1 - f 1, except sub-medially changing to longitudinal to oblique between setae f 1 - h 1, transverse posterior to h 1, laterally with longitudinal to oblique irregular striations, all dorsal striae closely-spaced and lobed. Dorsal setae sub spautulate, serrtaed, short, not reaching to the setae next in line and not set on strong tubercles; Lengths of dorsal setae (without tubercles): v 2 27, sc 1 39, sc 2 31, c 1 32, c 2 37, c 3 23, d 1 22, d 2 35, e 1 21, e 2 26, f 1 16, f 2 22, h 1 34. Distances between dorsal setae v 2 - h 1 251, v 2 - v 2 41, sc 1 - sc 1 75, c 1 - c 1 67, c 1 - c 2 54, d 1 - d 1 32, d 1 - d 2 48, e 1 - e 1 36, e 1 - e 2 28, f 1 - f 1 17, f 2 - f 2 69, f 1 - f 2 28, h 1 - h 1 24.

Venter (Fig. 10 ). Integument between setae 1 a- 3 a with transverse lobed striae, between 3 a to 4 a with irregular oblique striae. Lengths of setae: 1 a 27, 1 b 24, 1 c 23, 2 b 23, 2 c 21, 3 a 21, 3 b 20, 4 a 18, 4 b 19, one pair of aggenital setae (ag) 11, two pairs of genital setae, g 1 11, g 2 12 and three pairs of anal setae (ps 1‒3), ps 1 = ps 2 = ps 3 = 9–10, h 2 = h 3 11–12.

Gnathosoma. Ventral infracapitulum with one pair of adoral setae 8 and one pair of subcapitular setae m 16. Palp five-segmented (Fig. 12 ), palptarsus with one solenidion ω 7 (7‒8), three eupathia ul' ' ζ 8 (6‒8), ul' ζ 10 (9‒11), sul 9 (8‒10) and three setiform setae a 11 (9‒11), b 12 (12‒13), c 11 (10‒12); palp tibia with three setae d 19 (18‒22), l' 11 (11‒14), l' ' 13 (12‒15) and one claw bifid distally, palp genu with one simple seta l' ' 21 (19‒22) and palp femur with one serrated seta d 22 (20‒24) (similar to dorsal setae).

Legs (Fig. 11 ). Length of leg I (trochanter to tip of tarsus) 1164, leg II 508; leg III 556; leg IV 820; length of leg segments, Leg I (trochanter 32, femur 461, genu 47, tibia 455, tarsus 169; leg IV trochanter 40, femur 270, genu 53, tibia 335, tarsus 122. Leg segment setal formula as follows: coxae 2-2 - 1 - 1; trochanters 1-1 - 1 - 1; femora 9-7 - 5 - 5; genua 4-5 - 5 - 5; tibiae 30 + 13 φ + b (trichobothium-like seta) - 11-11 - 11; tarsi 20 + 5 ω + 3 dup- 14 + 1 ω + 1 dup- 13 + 1 dup- 13 + 1 dup; solenidia on leg I Iω ” 40, IIω ” 41, IIω ” 37, IIIω’ 15, IV ω’ 30, Empodia I – IV with true claws pad-like, empodial claws bearing two rows of ventrally directed hairs.

Aedeagus — Slightly directed ventrad, needle-like gradually tapering towards end.

Distribution

Abbottabad, Pakistan.

Remarks

The morphological characters of Petrobia (Tetranychina) cardi Chaudhri collected in the present study are almost similar to the original description ( Chaudhri 1972) by leg chaetotaxy, shape of dorsal setae and peritremes, except some variations in the length of leg I 1220 ‒1293 vs. 1192 and leg IV 981‒1032 vs. 938 in the latter and length of dorsal setae.

Figures

Figure 5. Petrobia (Tetranychina) cardi Chaudhri. Female, 5 a dorsum. Scale bar 100 μm; 5 b Stylophore. Scale bar 20 μm.

Figure 6. Petrobia (Tetranychina) cardi Chaudhri. Female, 6 a venter. Scale bar 100 μm.

Figure 7. Petrobia (Tetranychina) cardi Chaudhri. Female. f Leg I, 7 f trochanter, femur genu; 7 f 1 tibia, tarsus; 7 g Leg II; h Leg III; i Leg IV, 7 i trochanter, femur, genu, 7 i 1 tibia, tarsus. Scale bar 100 μm. 7 i Empodium IV. Scale bar 10 μm.

Figure 8. Petrobia (Tetranychina) cardi Chaudhri. Female, palp. Scale bar 25 μm.

Figure 9. Petrobia (Tetranychina) cardi Chaudhri. Male, dorsum. Scale bar 100 μm; 9 a Stylophore. Scale bar 20 μm.

Figure 10. Petrobia (Tetranychina) cardi Chaudhri. Male, venter. Scale bar 100 μm.

Figure 11. Petrobia (Tetranychina) cardi Chaudhri. Male. k Leg I; 11 k trochanter, femur; genu, 11 k 1 tibia, tarsus; 11 l Leg II; m Leg III 11 m trochanter, femur, genu; 11 m 1 tibia, tarsus; n Leg IV. 11 n trochanter, femur, genu. 11 n 1 tibia, tarsus. Scale bar 100 um. 11 o Empodium III. Scale bar 10 μm.

Figure 12. Petrobia (Tetranychina) cardi Chaudhri Male, Palp. Scale bar 25 μm.