Entomobrya loftyensis, 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: 47-49

publication ID

https://doi.org/10.11646/zootaxa.4770.1.1

publication LSID

lsid:zoobank.org:pub:39F2F040-E300-4065-9E8E-83A9D6286D1F

DOI

http://doi.org/10.5281/zenodo.3816011

persistent identifier

http://treatment.plazi.org/id/011B87E9-FFBF-6549-FF60-C4E8FC59BCDF

treatment provided by

Plazi

scientific name

Entomobrya loftyensis
status

sp. nov.

Entomobrya loftyensis   sp. nov.

( Figs 2F View FIGURE 2 , 5A View FIGURE 5 , 24 View FIGURE 24 A–F)

Holotype. Male SA, Belair NP, Nov. 2010, - 35.0079°S, 138.6339°E, 349m asl, PG leg., [ SAMA 22652–01 View Materials ]. GoogleMaps  

Paratypes. Three specimens, same locality and date, in ethyl alcohol, [ SAMA 22652–02 View Materials ] [ SAMA 22652–02 View Materials ]   .

Other material examined. Male SA, Belair NP, sweeping grasses, 10.viii.1974, PG leg., [ SAMA]; one male subadult, female and juvenile, SA, Engelbrook Reserve , Bridgewater, - 35.0167°S, 138.7664°E, 366m asl, sweeping, 18.iv.72, PG leg.; male, female, SA, Coorong, Coolatoo, - 32.433°S, 139.779°E, on road, 28.vii.74 and disturbance pitfall traps, 28.ix.1975, PG leg GoogleMaps   .

Description. Size. Length up to 1.861 mm excluding antennae (holotype).

Colour. Whitish. Head with an anterior black spot between antennae, ocular spot black. Antennae not pigment- ed, Abd III with two lateral medial blue triangles and a central posterior, more or less rectangular spot. Abd IV with two medio-lateral longitudinal bands and a central stripe sometimes extending from Th III.

Head. Eight eyes, G and H 50% smaller than E and F. Antennal length 1633 μm, 4.1 times length of the head. Ant IV with bilobed apical vesicle; 3.88 is the ratio Head/ length of Ant. Sensory organ of Ant III with small roundish rod-like sensillum in addition to 3 guard sensilla (as Fig. 24A View FIGURE 24 ); four round, smooth, labral papillae. Labial base with Mc MREL 1 L 2, all ciliated and R half-length of M. External process of papilla E reaching to the tip.

Body. Ratio lengths of Abd IV/III=5.8. Tibiotarsus without differentiated chaetae, with exception of smooth terminal chaetae on legs 3, characteristic for the genus. Unguis ( Fig. 24B View FIGURE 24 ) with 4 teeth: paired two at 50% from base and first unpaired tooth at 75 % from base, one longer than the other; lateral teeth below the level of paired ones. Unguiculus truncate, with an anteapical internal tooth and with tooth on external lamella. Tenent hair clavate, longer than unguis. Trochanteral organ with 25 chaetae. Manubrial plate with two internal chaetae, two pseudopores and 8 external chaetae, Mucro bidentate with anteapical tooth similar in size to apical one; mucronal basal spine reaching the tip of subapical tooth.

Macrochaetotaxy. Simplified Mc formula: 3,1,0,3,2/3,4/2,3/0,0,1/0,2,4,2,2. Head chaetotaxy ( Fig. 24C View FIGURE 24 ) An 2, An 3a1, An 3 and A 5 Mac. Only M 1, M 2 and M 4 present as Mc. In sutural row S 0, S 1, S 2, S 3, S 4i, S 4, S 5i and S 5. Ps 2 and Ps 5 present. Thoracic chaetotaxy of Th II ( Fig. 24D View FIGURE 24 ) Mc m 1, m 2 and m 2i on T1 area, on T2 area Mc a 5, m 4, m 4p and m 5 present (a 5 as mes absent). Abdominal chaetotaxy a 2 and a 3 present on A1 area at Abd II and sensillum before the line that unite the two bothriotricha, m 3, m 3ep and m 3e Mc present on A2 area of Abd II ( Fig. 24E View FIGURE 24 ), distribution of the chaetae on this segment on the posterior part of the tergite. On Abd III only m 3 Mc present on A5 area; Abd IV ( Fig. 24F View FIGURE 24 ) with Mc A 3 –A 6. A e4, and B 4 –B 6, C 2a and E 1. Sensillary formula usual for Entomobrya   .

Remarks. The antennae in this species are exceptionally long, being as long as the body minus the head. The unguiculus is truncate with internal and external teeth. Because of the chaetotaxy, the antennae, the unguiculus and the colour, E. loftyensis   sp. nov. is distinguished from all other Entomobrya   . Furthermore, the pattern of chaetotaxy of Abd II and III (2,3/0,0,1 Mc) is not present in any other Entomobrya   species.

Etymology. Named for the range of hills on which it was found.

SA

Museum national d'Histoire Naturelle, Laboratiore de Paleontologie

SAMA

South Australia Museum