Chinattus mikhailovi, Logunov, 2021

Logunov, Dmitri V., 2021, Notes on the genus Chinattus Logunov, 1999 from India, Pakistan and Nepal (Arachnida: Araneae: Salticidae), Zootaxa 5006 (1), pp. 110-120 : 112-115

Chinattus mikhailovi sp. nov.

Figs 6–22 , Map

Etymology. The species is named in honour of my colleague and friend, Dr Kirill G. Mikhailov (Moscow, Russia), for his life-long dedication to spiders and on the occasion of his 60th birthday.

Diagnosis. The male of C. mikhailovi sp. nov. is most similar to those of the Chinese-Japanese C. dactyloides Xie, Peng & Kim, 1993 (cf. figs 1–7 in Peng & Xie 1995 and figs 15–18 in Suguro 2014) and the Himalayan- Chinese C. validus ( Xie, Peng et Kim, 1993) (cf. Figs 6–12 ), from which it can be easily distinguished by the straight RTA directed apicad ( Fig. 7 ; directed apico-ventrad in C. dactyloides and bent mediad in C. validus ) and the sperm duct clearly visible through the integument in the apical division ( Fig. 6 ; not visible in both related species). The female of new species differs from all Chinattus species described to date (see Metzner 2021 for comparative figures) in having the shortest insemination ducts and tube-shaped receptacles making one revolution ( Figs 11, 12 ). By the long glandular duct (two times longer than the insemination ducts; arrowed in Fig. 12 ), C. mikhailovi sp. nov. is similar to C. caucasicus Logunov, 1999 (cf. figs 46, 47 in Logunov 1999a), but the latter differs in having the triangle posterior extension of the epigyne overhanging the epigastric furrow, which is absent from the new species. Finally, a unique feature of the new species is the shallow epigynal pocket, seen as a transverse fold situated close to the epigastric furrow ( Figs 10, 12 ); of the described Chinattus species , only C. dactyloides has a properly developed, deep internal epigynal pocket (see figs 5, 6 in Peng & Xie 1995).

Description. Male (paratype from MMUE, Figs 6–9 , 13–16, 18 ). Measurements. Carapace: 1.50 long, 1.16 wide, 0.75 high. Abdomen: 1.15 long, 0.90 wide. Ocular area: 0.68 long, 1.05 wide anteriorly, 1.06 wide posteriorly. Cheliceral length 0.43. Clypeal height 0.08. Diameter of AME 0.33. Length of leg segments: I 0.73 + 0.41 + 0.45 + 0.38 + 0.31 (2.28); II 0.61 + 0.40 + 0.38 + 0.33 + 0.33 (2.00); III 0.93 + 0.41 + 0.50 + 0.53 + 0.25 (2.62); IV 0.78 + 0.38 + 0.45 + 0.55 + 0.30 (2.46). Leg spination: I: Fm 1ap; Tb pr 0-1, v 1-2-2ap; Mt v 2-2ap. II: Fm d 3ap; Pt pr 0-1-0; Tb pr 0-1, v 1-2-2ap; Mt v 2-2ap. III: Fm d 0-1-3; Pt rt 0-1-0; Tb pr and rt 1-1, v 2ap; Mt pr and rt 1-0-2ap, v 2-0-2ap. IV: Fm d 1-0-1; Pt rt 0-1-0; Tb rt 1-1, v 2ap; Mt pr and rt 1-0-2ap, v 2ap. Colouration (in alcohol; Figs 13–16 ). Carapace dark brown, shiny, without covering scales or hairs; clypeus narrows, brown, without hairs or scales. Chelicerae dark brown, promargin with two and retromargin with one small teeth ( Fig. 9 ). Sternum yellow, tinged with brown. Labium and endites dark brown, with yellow apexes; distal ectal projections poorly marked ( Fig. 18 ). Abdomen: dorsum yellow, with wide transverse brown bands and white lines ( Fig. 14 ); sides yellow in anterior half and brownish in posterior half; venter yellow. Book-lung covers yellow. Spinnerets yellow, with brown lateral sides. Leg I: Fm dark brown, with yellow dorsal stripe; Pt and Tb brownish yellow, with dark brown anterior sides; Mt and Tr yellow. Legs II–IV: yellow, with dark brown rings and spots. Palps brown, with yellowish cymbium and bulb. Palpal structure as in Figs 6–8 : tibia relatively short, 3.5 times shorter than cymbium; RTA triangle, directed apicad, with wide base and pointed at its tip; cymbium simple, oval (1.5 times as long as wide), without extensions or ridges; bulb triangle, consisting of 2 parts: basal one, which seems to be the true tegulum (not the functional tegulum, sensu Logunov 1999a), and apical division lying apico-median of tegulum, with sperm duct clearly visibly through integument; embolus short and pointed (blade-shaped).

Female (paratype from MMUE, Figs 10–12 , 17, 19–22 ). Measurements. Carapace: 1.73 long, 1.34 wide, 0.75 high.Abdomen: 1.78 long, 1.48 wide. Ocular area: 0.85 long, 1.15 wide anteriorly, 1.15 wide posteriorly. Cheliceral length 0.45. Clypeal height 0.05. Diameter of AME 0.35. Length of leg segments: I 0.78 + 0.50 + 0.48 + 0.40 + 0.31 (2.47); II 0.75 + 0.41 + 0.43 + 0.33 + 0.30 (2.22); III 1.05 + 0.53 + 0.55 + 0.53 + 0.30 (2.96); IV 0.95 + 0.35 + 0.55 + 0.63 + 0.38 (2.86). Leg spination: I: Tb v 2-2-2ap; Mt v 2-2ap. II: Fm d 0-0-1-1; Tb v 1-2-2ap; Mt v 2-2ap. III: Fm d 0-0-1-2; Pt pr and rt 0-1-0; Tb pr and rt 1-1, v 2ap; Mt pr and rt 1-0-2ap, v 2-0-2ap. IV: Fm d 1-1; Pt rt 0-1-0; Tb pr 0-1, rt 1-1, v 2ap; Mt pr and rt 1-0-2ap, v 2ap. Colouration (in alcohol; Figs 17, 20–22 ). Carapace brown, with dark brown eye field, covered with white recumbent scales; clypeus narrow, brown, without hairs or scales. Chelicerae yellow brownish. Sternum, labium and endites yellow, tinged with brown. Abdomen: dorsum light brown, with three pairs of white spots; sides yellow, with brown speckles; venter yellow. Book-lung covers yellow. Spinnerets yellow, with brown lateral sides. All legs yellow, with brown rings and patches at segment joints. Palps yellow. Epigyne and vulva as in Figs 10–12 : epigyne flat and transparent, with 2 poorly-marked and facing backwards copulatory openings situated in its centre; copulatory openings separated by 2 diameters; shallow epigynal pocket present, seen as a transverse fold situated close to epigastric furrow; insemination ducts short wide and straight, with very long, straight glandular ducts; receptacles tubular, making one revolution and directed apicad; fertilization ducts prominent, situated at apical ends of receptacles.

Type material. Holotype ♂, PAKISTAN: Khyber Pakhtunkhwa: Peshawar, Forestry campus of Agricultural University , c. 34°01’N 71°29’E, leg. S. V. Ovtchinnikov , 11–26.VIII.2005, ( ZMMU, Ta-8154).

Paratypes: together with the holotype, 4♂ 1♀ ( ZMMU, Ta-8155), 3♂ 1♀ ( MMUE, G7656.1 ); same locality as for the holotype, leg. S. V . Ovtchinnikov, 26–29.VIII.2005, 5♂ ( ISEA, 001.8646) .

Distribution. Only the type locality (Map).

Map. Collecting localities of three Chinattus species.

Figures

FIGURES 6–12. Chinattus mikhailovi sp. nov. from Pakistan (Khyber Pakhtunkhwa), paratypes from MMUE. 6–8 palp of ♂ (6 ventral, 7 retro-lateral, 8 dorsal view); 9 right chelicera of ♂, ventral view; 10 epigyne of ♀, ventral view; 11 diagrammatic course of insemination duct; 12 vulva, dorsal view. Scales: 0.1 mm.

FIGURES 13–22. Chinattus mikhailovi sp. nov. from Pakistan (Khyber Pakhtunkhwa), paratypes from MMUE. 13–16 body of ♂ (13 frontal, 14 dorsal, 15 lateral, 16 ventral view); 17 body of ♀, frontal view; 18 left endite of ♂; 19 same of ♀; 20–22 body of ♀ (19 dorsal, 20 lateral, 21 ventral). Scale: 13–17, 20–22, 1 mm, 18, 19, 0.1 mm.