Entomobrya promontorium, Jordana & Greenslade, 2020
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publication ID |
https://doi.org/ 10.11646/zootaxa.4770.1.1 |
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publication LSID |
lsid:zoobank.org:pub:39F2F040-E300-4065-9E8E-83A9D6286D1F |
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DOI |
https://doi.org/10.5281/zenodo.3816041 |
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persistent identifier |
https://treatment.plazi.org/id/011B87E9-FFAD-6545-FF60-C244FB51BACB |
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treatment provided by |
Plazi |
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scientific name |
Entomobrya promontorium |
| status |
sp. nov. |
Entomobrya promontorium sp. nov.
( Figs 3A View FIGURE 3 , 32 View FIGURE 32 A–F)
Holotype. Female (marked under slide), New Zealand, Rock and Pillar Range, - 45.3833°S, 170.1167°E, 1450m asl, pitfall, 12–15.v.1999, B. J. Sinclair leg. [ SAMA 22656 About SAMA ]. GoogleMaps
Paratypes. Three specimens: two females and subadult, same data as holotype.
Description. Size. Length 1.342 mm (n= 4).
Colour. Greenish from note on slide label.
Head. Eight eyes, G and H smaller than E and F. Antennal length 661 μm, 2.09 times the length of the head. Ant IV with bilobed apical vesicle; relative length of Ant segments: 1/2.3/2,5.6/2.9. Sensory organ Ant III as figure 32B. Four prelabral ciliated chaetae, 5,5,4, labral smooth chaetae. Labium with MREL 1 L 2 ciliated chaetae, R 1/2 than M in length. Labral papillae with a protrusion in each papilla ( Fig. 32A View FIGURE 32 ). Labial papilla E with external process reaching the papilla tip.
Thorax and abdomen. Ratio of lengths Abd IV/III=3.75 (n=4). Tibiotarsus without differentiated chaetae, with exception presence of smooth terminal chaetae on legs 3, characteristic for the genus. Unguis with 4 teeth, paired two at 50% from base, first unpaired tooth at 75 % from the base, dorsal tooth basal. Unguiculus acuminated, narrow, external lamella of leg 3 smooth. Tenent hair clavate, longer than unguis. Trochanteral organ with around 22 chaetae. Manubrial plate with 4 chaetae and 2 pseudopores. Mucro bidentate, both teeth of similar size with mucronal basal spine; Mucronal length15 micrometers; smooth apical part of dens twice length of mucro.
Macrochaetotaxy. Simplified Mc formula: 3,1,0,3,2/4,4/2,3/1,0,1/0,3,4,2,2. Head chaetotaxy ( Fig. 32C View FIGURE 32 ) Mac An 2, 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 4p, S 4i, S 4, S 5i and S 5. Ps 2 and Ps 5 present. Thoracic chaetotaxy: Th II chaetotaxy ( Fig. 32D View FIGURE 32 ) T1 area with Mac m 1, m 2, m 2i and m 2e, T2 area with Mc a 5, m 4, m 4p and m 5. Abdominal chaetotaxy ( Fig. 32E View FIGURE 32 ): Abd II with a 2, a 3, m 3ep, m 3e and m 3ea, on Abd III a 1 and m 3 Mc present; Abd IV ( Fig. 32F View FIGURE 32 ) with Mc A 2, A 4 –A 6, A e4, B 2, B 4 –B 6, C 2a and E 1. Sensillary formula usual of Entomobrya . The bothriotricha on Abd IV in position T 2 and T 4 (0110).
Remarks. Four specimens were available, three adults and one subadult, with unique chaetotaxy for Entomobrya . The chaetotaxy of Th II, Abd II and III is similar to E. leonensis Jordana & Baquero, 2005 and E. nivalis ( Linnaeus, 1758) but differs in the labral papillae being conical in this species and multispinate in the other two. The pattern of Mc on Abd IV is also different (0,3,2,2,2) for E. leonensis and (0,3,0,2,2) for E. nivalis .
Salmon (1964) recorded 37 species of Entomobrya from New Zealand, with five exotics although two were Australian species. None of these species have ever been revised but none have the same colour pattern as E. promontorium sp. nov. On current evidence it appears that this species is a short-range montane endemic.
Etymology. Named for the prominent rock formation on which the species was found.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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