Lepidocyrtus bilobatus
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Ordo: Collembola
Familia: Entomobryidae
Genus: Lepidocyrtus
Name
Lepidocyrtus bilobatus Mateos, Eduardo, 2008 – Wikispecies link – Pensoft Profile
- Lepidocyrtus bilobatus Mateos, Eduardo, 2008, Zootaxa 1917: 39-44.
Materials Examined
Type material.Spain, Salamanca (LOC 139, see Tab. 1 and Fig. 1), on herbaceous vegetation along the Alayón river, 2.viii. 2007, E.Mateos coll. Holotype: female (CRBA1272) on 1 slide, paratypes: lot LP 175 (unpigmented specimens) composed by 11 specimens prepared on slides and 80 specimens in alcohol, lot LP 176 (pigmented and unpigmented specimes) composed by 4 specimens mounted on slides and 16 specimens in alcohol. Holotype and 7paratypes mounted on slides deposited at the Centre de Recursos de Biodiversitat Animal, Faculty of Biology, University of Barcelona (http://www.crba.ub.edu): Slide CRBA1341 with one pigmented specimen, slides CRBA1342 and CRBA1343 with one unpigmented specimen each, slide CRBA1344 with two pigmented and two unpigmented specimens. Other paratypes deposited in the E. Mateos collection.
Etymology
Etymology. The species name refers to the bilobed morphology of the ant. IV apical bulb, which is a diagnostic character for the new species within the European Lepidocyrtus fauna.
Description
Description.Holotype body length (without head nor furca) 1 mm, paratypes0.7 –1.0 mm. Holotype body unpigmented; paratypes body color highly variable with yellow-white (form A) and purple (form B) specimens present in the same population (Figs 2–3); all specimens with purple pigment on anterior region of the head and ant. II–IV. Ocular areas densely black pigmented. Antenna, legs, and dorsal side of manubrium without scales. Body dorsoventrally compressed; mesothorax not projecting over the head. Ratio antenna:cephalic diagonal = 1.5 for holotype, for paratypes1.4–1.7; ant. I:II:III:IV = 1: 1.9: 2.1: 3.6. Basis of ant. I dorsally with three microchaetae arranged in triangle. Ant. III organ as in Fig. 4. With bilobed nonretractile ant. IV apical bulb (Fig. 5). 8 + 8 eyes of equal size. Smooth prelabral and labral setae in typical number 4 / 554; prelabral setae ciliated; the four labral setae of the third row are shorter, more curved, and with more developed insertion than setae of the other two rows; inverted U-shaped labral apical intrusion; with four rounded labral papillae (Fig. 6). Subapical seta of outer maxillary palp smooth and slightly longer than or subequal to apical seta, with three smooth setae on sublobular plate (Fig. 7). Outer differentiated seta of labial appendage curved, tip almost reaching the apex of the papilla (Fig. 8). Labium anterior row (a 1 –a 5) formed by smooth setae; posterior row formed by ciliated setae (M 2 R*EL 1 L 2), with R half in length on seta M 2 (marked as R*) (Fig. 9). Ventral cephalic groove with 3 + 3 ciliated macrochaetae and 2 + 2 scales. The dorsal macrochaetae formula is R0R 1 R 2 STSo/ 10 /0301+ 3, with a pair of supplementary macrochaetae R 1 s between R0 and R 1 (Fig. 10). Maximum number of macrochaetae A on the head 9 + 9 (Fig. 11). Interocular chaetotaxy with s, t, r, q, p ciliated setae, without scales (Fig. 12). The th. II dorsal macrochaeta correspond to p 3 (Fig. 13). Abd. II–III chaetotaxy as in Figs 14–15; abd. II setae a 2, m 3 and m 3 e ciliated macrochaetae, seta a 2 p absent; abd. III seta m 7 a acuminate thin ciliated macrochaeta. Abd. IV chaetotaxy as in Fig. 16 -A; trichobothrium T 2 without accessory seta s; seta D 1 p ciliated and double in length than other setae of the trichobothrial complex (Fig. 17); seta Fe 4 can be thin ciliated macrochaeta or smooth mesochaeta depending on the specimens (Fig. 16 -B). Bilateral asymmetries can be observed in some specimens in which Fe 4 is thin ciliated macrochaeta on one side and smooth mesochaeta on the other; without correlation between the morphology of seta Fe 4 and other characters like size, color pattern nor locality. Three posterior smooth mesochaetae on abd. IV present. All setae associated with the trichobothria on abd. II–IV are acuminate and strongly ciliate, except pi and pe on abd. IV which are fan-shaped.
ref code locality province country lat long elev date method species a LOC137 Bandeira Coimbra Portugal40.2016-8.8798 241 29-07-07v1, 5b LOC126 Arrimal Leiria Portugal39.4995-8.8712 320 12-07-07v4c LOC129 Pragais Leiria Portugal39.5785-8.8221 308 18-07-07v1d LOC125 Mira Coimbra Portugal40.4457-8.7988 13 08-07-07v5e LOC131 San Jacinto Aveiro Portugal40.6706-8.7252 9 21-07-07v1, 2f LOC134 Arzila Coimbra Portugal40.1830-8.5462 120 26-07-07v1, 2g LOC133 Taveiro Coimbra Portugal40.2013-8.5376 4 26-07-07v3h LOC124 Curia Coimbra Portugal40.4260-8.4655 42 08-07-07v2i LOC132 Coimbra Coimbra Portugal40.2231-8.4458 34 25-07-07v1, 5, 3j LOC123 Buçaco Coimbra Portugal40.3796-8.3763 243 08-07-07v1, 2k LOC135 Coimbra Coimbra Portugal40.2227-8.3349 9 28-07-07v1, 3l LOC136 Casal de Santo Amaro Coimbra Portugal40.2845-8.3046 165 28-07-07v2m LOC127 Gerês Braga Portugal41.7371-8.1579 465 14-07-07v1n LOC128 Gerês Braga Portugal41.7507-8.1528 720 14-07-07v1o LOC052 Pardieiros Coimbra Portugal40.2168-7.9096 600 22-07-07v1p LOC138 El Casarito Salamanca Spain40.5218-6.1382 1065 02-08-07v1, 4q LOC139 Sotoserrano Salamanca Spain40.4110-6.0535 364 02-08-07v7r LOC120 Pina de Ebro Zaragoza Spain41.4793-0.2415 400 31-05-07s3s LOC091 Vall d'Aran Lleida Spain42.7755 0.7851 1450 17-07-06v1t LOC097 Taull Lleida Spain42.5102 0.8779 1800 20-07-06s1u LOC108 Montsant Tarragona Spain41.2370 0.8843 385 17-02-07v3v LOC156 Vila-seca Lleida Spain41.6850 0.9434 230 29-05-08v3w LOC102 Prades Tarragona Spain41.3594 1.0804 990 03-01-07v1x LOC101 Viladecavalls Barcelona Spain41.5469 1.9601 200 25-10-06v6y LOC144 Blanes Girona Spain41.6867 2.8165 2 28-02-08v6z LOC143 Tossa de Mar Girona Spain41.7190 2.9028 2 21-02-08v6
V-shaped trochanteral organ formed by 6–8 smooth straight setae (Fig. 18). Unguis with basal pair teeth at 46 % of the inner edge, and with two inner teeth at 66 % (the bigger) and 83 % of the inner edge respectively; unguiculus lanceolate with finely serrated outer margin; spatulate tibiotarsal tenent hair (Fig. 19).
Ratio manubrium: dens: mucro = 23: 21: 1. Manubrial plate with 2 inner setae and 4–5 external setae (Fig. 20).
Ecology and distribution. All the individuals were obtained beating the herbaceous vegetation along the Alayón river.
Discussion
Discussion. The bilobed antennal apical bulb is a diagnostic character that separates L. bilobatus sp. nov. from all other European species. The new species is very close to L. lusitanicus and L. selvaticus, from which it can be differentiated by abd. IV chaetotaxy: In L. bilobatus sp. nov. setae E 1, De1 and E 4 p are ciliated macrochaetae (Fig. 16), whereas in the other two species are smooth mesochaetae (Fig. 27). The new species also differs from L. selvaticus by the presence of labial seta R (absent in L. selvaticus) and by having 3 + 3 ciliated setae along ventral cephalic groove (2 + 2 ciliated and 1 + 1 smooth in L. selvaticus, see: Fig. 29). As L. lusitanicus, the new species has high color pattern variability, with white (L. bilobatus form A) and purple pigmented specimens (L. bilobatus form B) living in the same population. The fact that specimens with different color pattern live together in the same population, suggests that body pigment distribution cannot be considered a good subspecific character in L. bilobatus sp. nov.; for this reason L. bilobatus form A and form B have been described as color forms and not as subspecies.
Taxon Treatment
- Mateos, Eduardo; 2008: Definition of Lepidocyrtus lusitanicus Gama, 1964 species-complex (Collembola, Entomobryidae), with description of new species and color forms from the Iberian Peninsula, Zootaxa 1917: 39-44. doi
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