Friesea shaanxiensis Gao & Yin, 2006, sp. nov.
Creators: name: Gao, Yan
name: Yin, Wenying
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Entognatha
Collembola
Neanuridae
Friesea
Friesea shaanxiensis

description: Friesea shaanxiensis sp. nov.
(Fig. 1–9)
Material examined. Holotype 1 female, north­west China, Shaanxi Province, Guangtou Mountain, 2800 km, litter­rich soil in forest of Larix chinensis, 20 /7 /2003, Huan Yin.
Description. Colour: pale. Length: 600 µm. Cuticle with fine granulation.
Head (Figs. 1–4): 8+8 ocelli. Eye patches with scattered black pigment. Cephalic diagonal length 158 µm. Antenna shorter than cephalic diagonal, ratio of antenna to head as 0.5; length ratio of Ant. I: II: III+IV as 1: 0.9: 1.9. Ant. I with 7, ant. II with 13 ordinary setae. Ant. III organ normal, apical with 2 sensory rods and 2 long sensillae (Fig. 2). Ant. IV dorsal with 6 blunt sensillae, 1 microsensillum (ms) and 1 internal­setae (i) and ventral with about 10 microsetae; apical bulb simple (after Deharveng & Bedos, 1991). Ant. III– IV stocky. Maxilla typical for the genus. Labral setae 2/2, 5, 3 (Fig. 3). Labium as in Fig. 4, labial triangle with 7 setae on each half.
Body: Setae all simple, thin, subequal in length, of moderate size even on abd. V–VI; s­setae 1.3 to 2.2 times as long as ordinary mesochaetae. Dorsal axial setae pairs as 1, 2, 2/ 2, 2, 2, 2, 2, 2. Seta a2 absent on th. III­abd. III. Abd. V with 2+2 setae between s­setae. Six annal spines subequal in length, as long as unguis (Fig. 6).
Dorsal chaetotaxy: as illustrated in Fig. 2–4. Area frontalis of head with median setae “d”. Th. I with 4+4 setae. Seta a2 present on Th. II and absent on Th. III; Th. II and III respectively with 2 sensillae p3 and p6 on each side. Abd. I–IV with sensillum p4. Abd. V without a2, with a long sensillum p2 (Fig. 6). Tergite chaetotaxy as follows:
Di De Dl L
Th. I 1 2 _ 1
Th. II 4 2+s 2+s 2
Th. II 3 2+s 2+s 2
Abd. I 3 2+ s 2 1
Abd. II 3 2+ s 2 1
Abd. III 3 2+ s 2 1
Ventral chaetotaxy: Head with 2+2 setae along ventral line. Ventral tube with 4 setae on each half. Furca and tenaculm absent. Genital apertures of female with 8 setae (Fig. 7). Anal lobes as in Fig. 9, with 3 high­reduced (hr) setae on each half.
Tibiotarsi I, II and III with 16, 16 and 15 setae respectively, with 3 clavate tenent hairs of each. Unguis length 16µm, without inner teeth; unguiculus reduced to a small protuberance (Fig. 8).
Remarks. This species resembles Friesea ladeiroi da Gama, 1959; Friesea xitlensis Palacios­Vargas & Acosta, 1994 and Friesea carlota Christiansen & Bellinger, 1988 in anal spines, 8+8 ocelli and lacking furca and tenaculum. However, it differs from Friesea ladeiroi in claws (F. ladeiroi with one inner tooth of each claw, after Massoud, 1967) and differs from Friesea xitlensis and carlota in capitate setae of abd. V and VI (F. xitlensis with 4 capitate setae of abd. VI, Palacios­Vargas & Vidal­Acosta, 1994; F. carlota with a pair of long and capitate setae of each, Christiansen & Bellinger, 1998).
Etymology. The name of the new species is after the locality of types, Shaanxi Province.
description: Published as part of Gao, Yan & Yin, Wenying, 2006, Two new species of the genus Friesea (Collembola: Neanuridae) from North­west China, pp. 63-68 in Zootaxa 1283 on pages 64-66, DOI: 10.5281/zenodo.173459