Entomobrya bioblitzi, Jordana & Greenslade, 2020

Jordana, Rafael & Greenslade, Penelope, 2020, Biogeographical and ecological insights from Australasian faunas: the megadiverse collembolan genus, Entomobrya (Entomobryidae), Zootaxa 4770 (1), pp. 1-104 : 22-24

Entomobrya bioblitzi sp. nov.

( Figs 1D , 9 A–E)

Holotype. Male, NSW, Thredbo NP, alpine meadow, - 36.504722°S, 148.305556°E, 2037m asl, pitfall, January 2012, PG leg., [ SAMA 22640 ].

Description. Size. Length 1.512 mm.

Colour. As indicated on label in having an orange head, as well as Abd V, VI ( Fig. 1D ).

Head. Eight eyes, G and H smaller than E–F. Antennae unknown. Labral papillae spinulate with three spines on each papilla ( Fig. 9A ). Labral chaetae with 4 prelabral and 5,5,4 chaetae, all smooth. Labial chaetae with MREL 1 L 2 ciliated, R smaller than M. External process of papilla E not reaching the papilla tip.

Thorax and abdomen. Length ratio of Abd IV/III=5.5. Tibiotarsus without differentiated chaetae, with exception of the presence of the smooth terminal chaetae on legs 3, characteristic for the genus. Trochanteral organ with 16-20 chaetae. Unguis with 4 teeth: paired at 50% of the basis, first unpaired at 75 % from the basis, dorsal and lateral teeth a little below the internal paired. Unguiculus acuminated, narrow, external lamella of leg 3 serrate. Tenent hair clavate, longer than unguis. Manubrial plate with 4 chaetae and 2 pseudopores. Mucro bidentate both teeth of similar size with mucronal basal spine. Mucro 15 micrometers and distal smooth portion of dens 2.5 times the mucro length.

Macrochaetotaxy. Simplified Mc formula: 4,1,0,1(2),1a/2,3/0,2/0,0,1/0,2,2,0,2. Head chaetotaxy ( Fig. 9B ) An 2, An 3a2, An 3a1, An 3 and A 5. M 2 and M 4 present as Mc. In sutural row present S 0, S 2, S 3, S 4i (present or absent), S 5i, S 5 and Ps 5 present. Thorax chaetotaxy: Th II chaetotaxy ( Fig. 9C ) T1 area with Mac m 1 and m 2, T2 area with Mc a 5, m 4, m 4i. Abdominal chaetotaxy ( Fig. 9D ): Abd II with m 3ep and m 3e, on Abd III m 3 Mc present; Abd IV ( Fig. 9E ) with Mc A 2, A 4, A 6, B 4, B 6, and E 1. Sensillary formula usual of Entomobrya . The bothriotricha on Abd IV in position T 2 and T 4 (0110).

Remarks. One specimen only was available. The colour of the fresh specimen was described on the slide. Taking into account only the chaetotaxy of the abdominal segments II and III 0,2 / 0,0,1, the only species with the same chaetotaxy of world Entomobrya are: E. assuta , E. boreensis sp. nov., E. clarki , E durrasensis sp. nov. and E. stirlingensis sp. nov. In the attached Table 4 , the characters listed for E. bioblitzi easily separate it from the five species above. Table 4

Etymology. The species is named after the Bioblitz field expedition organised by NSW National Parks Officer, Ken Green in 2012.

Figures

FIGURE 1. Habitus and colour of: A, Entomobrya additae sp. nov.; B, Entomobrya albocincta; C, E. assuta; D, Entomobrya bioblitzi, sp. nov.; E. Entomobrya boreensis, sp. nov.; F, Entomobrya caputovisensis sp. nov.; G–H, Entomobrya charlotteensis sp. nov. 7, male, H, female; I, E. clarki; J–K, Entomobrya darelis sp. nov.; L, Entomobrya driesseni sp. nov.; M, Entomobrya durrasensis sp. nov.; N, Entomobrya grisacea sp. nov.; O, Entomobrya herbacea sp. nov. Bar=0.5 mm.

FIGURE 9. Entomobrya bioblitzi sp. nov. Line drawings A–E: A, labral papillae (bar=0.02 mm); B, head chaetotaxy (bar=0.4 mm); C, Th II chaetotaxy; D, Abd II–III chaetotaxy; E, Abd IV chaetotaxy. Bar C–E=0.125 mm.

Tables

TABLE 4. Table comparative among E. bioblitzi sp. nov. similar species. LP=Labral Papilla: Without =0 smooth =1 Multispinte =2 seta like =3 Pointed not seta like =4. External unguiculus=EU: 0=smooth, 1=serrate. Diff = differences. bio/sti meaning the comparison between the species E. bioblitzi versus E. stirlingensis. The same abbreviations (first three letters) for the remaining species. * means differences.

	Head				LP	Th II II
species/characters	An3a1	S4i	P s2	P s3		m1	m2	m2i	m2i2	m4	m4i	m4p	m5
E. assuta sp. nov.	1	0	1	1	2	0	0	0	0	0	0	0	0
E. boreensis sp. nov.	0	0	1	0	3	0	1	0(1)	0	1	1	0	1
E. clarki sp. nov.	0	0	0	0	2	1	0	0	0	1	1	0	1
E. durrasensis sp. nov.	0	0	1	0	4	1	1	1	1	1	1	1	1
E. stirlingensis sp. nov.	0	1	0	0	4	1	1	0(1)	0	1	1	0	1
E. bioblitzi sp. nov.	1	0	0	0	2	1	1	0	0	1	1	0	0
bio/sti	*	*			*								*
bio/dur	*		*		*			*	*			*	*
bio/ass			*	*		*	*			*	*
bio/cla	*						*						*
bio/bor	*		*		*	*							*