Calx kailashi, Mandal, 2018

Mandal, G. P., 2018, Three new species of Collembola from India, Records of the Zoological Survey of India 118 (2), pp. 107-127 : 108-109

publication ID	https://doi.org/ 10.26515/rzsi/v118/i2/2018/129066
persistent identifier	https://treatment.plazi.org/id/03B287EE-FFD3-CF39-FF10-FAA044EEF8F1
treatment provided by	Felipe
scientific name	Calx kailashi
status	sp. nov.

Treatment

Calx kailashi View in CoL sp. nov

(Plate 1, Figures– 1–22, Table 1 and 2)

Type material: Holotype: male on slide, INDIA, Jharkhand, Panvasba Nallah, East side of Koderma Wild Life Sanctuary , district Koderma , Altitude 389 meters, Latitude 24°29’23.2”North and 85°36’41.3” East, date GoogleMaps

01.xii.2012, coll. G. P. Mandal (Registration No. 1931 / H14) deposited in the National Zoological Collection, Zoological Survey of India, (Kolkata). Paratypes: 1 example on slide (dissected), same data as Holotype (Registration No. 1932 / H14) and 30 examples in ethyl alcohol, same data as Holotype (Registration No. 1933 / H14) deposited in the National Zoological Collection, Zoological Survey of India, (Kolkata) GoogleMaps .

Description: Body length up to 1.32 mm (excluding appendages).

Colour-pattern: Back ground colour yellow-orange, dark violet pigment present in fresh specimens ( Figure 1 View Figures 1-22 ) but in preserved specimens pigments are dark blue ( Figure 2 View Figures 1-22 ). Antennae moderately and uniformly dark except base of each segment. Eye patches dark, an irregular patches below eye to mid-dorsal margin of head; prothorax with anterior portion with small patches, meso and metathorax with dark pigmented patches and spots, posterior margin darker than anterior ( Figure 3 View Figures 1-22 ). Ventrally yellowish in colour, fifth and sixth abdominal segments laterally with pigmented patches ( Figure 4 View Figures 1-22 ). Furcula without pigment. Thorax II to Abd. IV laterally dark pigmented, Th. II to Abd.IV forming an irregular median transverse band and patches ( Figures 1–3 View Figures 1-22 ). Legs base yellow and mid-dorsal and lateral edges dark. Abd. V with dark blue band in midline. Abd. VI totally dark blue.

Antennae: The antennae approximately 2.32 times as long as cephalic diagonal; the ratio of antennal segments I: II: III: IV= 1: 1.8: 1.5: 2.5 ( Figure 5 View Figures 1-22 ). Antennal segments sub cylindrical in shape and sub equal in diameter. Apex of Ant. IV with two apical bulb in two different sizes, distinctly not sub apical, and one distinct pin setae, two small smooth setae ( Figure 6 View Figures 1-22 ). Apical sense organ of third segment of four small rod shaped sensillae ( Figure 7 View Figures 1-22 ).

Head: Head more or less oval, 1.19 times as long as broad, outer labral papillae rounded and five smooth ciliate setae present ( Figure 8 View Figures 1-22 ). Labial appendages with clearly differentiated external setae of normal size present ( Figure 9 View Figures 1-22 ). Eyes 8+8, H smaller than G, 2 large multilaterally ciliate setae arise from eye patch ( Figure 10 View Figures 1-22 ). Cephalic macrochaetae and anterior type 5 setae as shown in Figure 11 View Figures 1-22 .

Clothing: Normal five types of setae present, type 1 setae very broad, long, sharpely expended basally and apex truncate type, predominant on head, Thorax II, III and Abd. I to III. All tergal macrchaetae truncate. Setae of type 5 acuminate for apical two thirds of length, slightly expended medially. Coarsely multilaterally ciliate setae present on head, thorax and abdomen. Bothriotrichia present on head, thorax and abdomen ( Figure 12 View Figures 1-22 ) .

Thorax and Abdomen: Relative length index of thoracic segments II: III = 1.6: 1. Relative length index abdominal segments I: II: III: IV: V: VI = 1: 1.2: 1.1: 5.6: 1.3: 0.6. Chaetotaxy of Th. II – III and Abd. I– III are shown in Figure 13 View Figures 1-22 and Figure 14 View Figures 1-22 . Rami of retinaculum with quadridentate; corpus with one long, broad, inner serrated, truncate seta ( Figure 15 View Figures 1-22 ).

Legs: Trochanteral organ with 12–15 smooth triangular setae ( Figure 16 View Figures 1-22 ). Metatibiotarsi proximally with 5 long multilaterally ciliate setae ( Figure 17 View Figures 1-22 ). Unguis with four inner teeth, inner ungual paired teeth two-third distal of the claw ( Figure 18 View Figures 1-22 ). Unguiculus lanceolate. Unguis and unguiculus without internal ciliation. Tenent hair as long as unguiculus, slender and acuminate.

Furcula and genital plate: Ratio of Manubrium: Dens: Mucro = 1: 1.69:0.02. Furcula with great number of multilaterally ciliate setae present on manubrium and both sides of dens. Manubrium with 38–40 multilaterally ciliate setae present on the dorsal side ( Figure 19 View Figures 1-22 ). Dens deeply crenulated. Mucro very small and short ( Figure 20 View Figures 1-22 ). Male genital plate with 10 papillae, 10 angular setae, 6 pegs and 6 normal setae ( Figure 21 View Figures 1-22 ).

Biology: In Jharkhand, found in dry habitats near Panvasba Nallah where the big rock covered with semi decomposed leaf litters, at an altitude 389 meters of elevation and coordinates between 24°29’23.2”N latitude and longitude 85°36’41.3” E. Soil is micacious type (containing particles of mica) and sandy in texture. The forest is tropical dry deciduous type and dominated by tall trees like – Terminalia arjuna , Shorea robusta , Tectona grandis and different types of herbs and shrubs like – Digitaria marginata , D. royleana, Euphorbia hirta and Lantena camera etc. ( Figure 22 View Figures 1-22 ).

Etymology: The new species is named after Dr. Kailash Chandra, Director of the Zoological Survey of India for his keen interest and encouragement in my study.

Discussion: Among the species of New world scale less Entomobryinae with falcate mucro only Calx neryi is yellow and orange with Th. 3 and Abd. 3 uniformly black (Soto-Adames, 2002). Calx luthuli is prussian blue coloration throughout the body, head, antennae, legs and manubrium (Rapoport and Rubio, 1968). Calx cubensis is white, rather scantily marked with blue ( Folsom, 1927). Calx sabulicola is dark blue to purple pigment & background yellow to dull gray ( Christiansen, 1958). The new species Calx kailashi n. sp. is also yellow-orange background and dark blue pigment patches throughout the body in preserved specimens, but in fresh specimens dark violet in colour. The dorsal macrochaetotaxy of the trunk of Calx kailashi n. sp. is more (26, 27, 14, 14, 12, on Th. 2– Abd. 3) setae and differs markedly from the chaetotaxy of C. sabulicola and C. neryi . The unguis of Calx kailashi n. sp. resembles that of C. neryi but differs in the position of the dorsal tooth, which is inserted on the two third distal of the claw. The sensillae of third antennal segment are small rods shaped without blunt, but are short blunt rods in C. neryi . The shape of the apical bulb of Ant. 4 is differs from C. neryi and C. sabulicola . Male genital plate of Calx kailashi n.sp. is having 10 papillae, 10 angulur setae, 6 pegs and 6 normal smooth setae and differs markedly from C. neryi and C. sabulicola . The new species could be easily distinguished from all the known species of the genus by the presence of outer labral papillae rounded and five smooth ciliate setae, labial appendages with clearly differentiated external seta, male genital plate, and other characters shown in Table 1.

Remarks: The colour pattern and pigment structure of Calx kailashi n. sp. is nearer to Calx sabulicola but strongly differs with presence of an external differentiated seta on the labial appendages, labral papillae with five smooth ciliate setae, male genital plate having different types of setae, pegs and papillae, number of dorsal macro chaetae of Th. II – Abd. III is more and unguis and unguiculus without internal ciliations and other characters shown in Table 2. The female is larger than male.