Bourletiella meghalayensis, 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 : 114-116

publication ID	https://doi.org/ 10.26515/rzsi/v118/i2/2018/129066
persistent identifier	https://treatment.plazi.org/id/03B287EE-FFD5-CF32-FCD1-FA214235FB0F
treatment provided by	Felipe
scientific name	Bourletiella meghalayensis
status	sp. nov.

Treatment

Bourletiella meghalayensis View in CoL sp. nov.

(Plate 3, Figures – 1– 17, Table 5)

Type material: Holotype: Female on slide, INDIA, Meghalaya, Mylliem village, Umiew river , East Khasi Hills district , Altitude 1496 m., Latitude 25°07” & 25°41” N Lat. and 91°21” & 92°09” E Longitude. date 05.iii.2016, coll. E.E.Jehamalar (RegistrationNo. 2048/H14)depositedinthe National Zoological Collection, Zoological Survey of India , (Kolkata) . Paratypes: Female, 1 ex on slide, same data as Holotype (Registration No. 2049 /H14) ; Paratypes: Female, 1 ex on slide, same data as Holotype (Registration No. 2050/ H14) ; Paratypes: 3 examples on slide (dissected), same data as Holotype (Registration No. 2051-2053 / H14) and 4 exs in ethyl alcohol, same data as Holotype (Registration No. 2054/H14) deposited in the National Zoological Collection, Zoological Survey of India , (Kolkata) .

Description: Body length up to 1.36 mm.

Colour pattern: Main colour blue, marked with green and yellow spot on the thorax and large abdomen. Head dark blue, ocelli dark, lighter form in between two ocelli, Ant. I-IV with blue pigment, base of Ant. I pale, all legs are light blue and furcula blue. Thorax and large abdomen deep blue dorsally with green and yellow marking, a big yellow spot present dorsally on large abdomen ( Figure 1 View Figures 1-22 ).

Head: Length of antennae: head diagonal = 1:5. Head clothed with short, smooth, plain setae. All setae are uniform in size ( Figure 2 View Figures 1-22 ). Mouth parts shown as in Figure 3 View Figures 1-22 .

Antennae: Length ratio of antennal segments I: II: III: IV as 1: 1.7: 2.6:5.1. Ant. I with 3 smooth setae medially ( Figure 4 View Figures 1-22 ). Ant. II with 9-12 setae. Ant. III with two sensillum(s) basally and one micro-sensillum(ms) ( Figure 5 View Figures 1-22 ). Ant. IV with 7 sub segments ( Figure 6 View Figures 1-22 ).

Clothing: Head, Antennae, legs, thorax and abdomen clothed with plain, short, smooth setae.

Legs: Unguis with two inner teeth anterior and medially and one outer tooth medially ( Figure 7 View Figures 1-22 ). Unguiculus very thin without teeth ( Figure 8 View Figures 1-22 ). 3 long clavate tenent hair on each foot as long as unguis ( Figure 9 View Figures 1-22 ). Tita II row p: 3 setae ( Figure 10 View Figures 1-22 ). Length of longest setae of Tita III > diameter of Tita ( Figure 11 View Figures 1-22 ).

Furcula and genital plate: Tenaculum with 3 barbs each and without setae ( Figure 12 View Figures 1-22 ). Length ratio of mucro: dens: manubrium as 1: 2.9:1.5. Number of manubrium anterior setae is 5 ( Figure 13 View Figures 1-22 ). Formula of anterior setae of dens 2,1,1,1...1( Figure 14 View Figures 1-22 ). Mucro with very narrow anterior furrow, basal 2/3 with furrow, mucro with light serration ventrally ( Figure 15 View Figures 1-22 ). Abd. VI dorsally with

Colour pattern Main colour blackish blue. Head and Main colour blue, marked with green and yellow spot on the large abdomen dorsally more or less pale. thorax and large abdomen. Head dark blue, ocelli dark, lighter form in between two ocelli, Ant. I-IV with blue pigment, base of Ant. I lighter, all legs are light blue and furcula blue. Thorax and large abdomen deep blue dorsally with green and yellow marking, a big yellow spot present dorsally on large abdomen

Tita II and Tita III Tita II row p: 3 setae, length of longest Tita II row p: 3 setae, length of longest setae of Tita III > diamsetae of Tita III = diameter of Tita eter of Tita

Unguis and unguic- Unguis with one inner tooth and no outer Unguis with two inner teeth anterior and medially and one ulus tooth, Unguiculus lanceolate. outer tooth medially. Unguiculus very thin without teeth. Formula of anterior Formula of anterior setae of dens Formula of anterior setae of dens setae of dens

2+1,2,1,1...1. 2,1,1,1.....1.

Mucro Mucro with furrow only in basal 1/3. Mucro with furrow in basal 2/3.

App. an. App. an. thin, broad, fanlike, apically App. an. Narrow, not broad, spatulate, out edge pointed, withalmost smooth. out serration.

Body length 1.8 mm 1.36 mm

median crest, setae long ( Figure 16 View Figures 1-22 ). Appendices anales (App. an.) narrow, spatulate shape, out edge pointed, without serration ( Figure 17 View Figures 1-22 ). Ratio of App. An: mucro = 1:2.

Etymology: The new species is named after the type locality.

Biology: In Meghalaya, found on the Umiew river bed of East khasi Hill district .

Discussion: The new species from East khasi Hill district of Meghalaya, India can easily distinguished from other known species of Bourletiella by colour pattern, claw structure, Tita II row p:3 setae, and Annal appendages. It is close to Bourletiella hortensis ( Fitch, 1863) , in having similar type Tita II row p:3 and Ant. IV with 7 sub segments but strongly differ from Bourletiella hortensis in the characteristics given below in the Table 5.

Summary

A total of 3 species of Collembola belonging to 3 genera under 3 families Entomobryidae , Isotomidae and Bourletiellidae have been described as new to science from India. The detailed descriptions of each species of Collembola with discussion for difference between closely related species, total numbers of species in the world as well as from India, key to the Indian species and their distribution are also provided.