Eosentomon longispine Nakamura 2010, sp. nov.
Creators: name: Nakamura, Osami
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Entognatha
Protura
Eosentomidae
Eosentomon
Eosentomon longispine

description: <i>Eosentomon longispine</i> Nakamura sp. nov. Figs. 40–41; Table 16 <b>Type specimens.</b> Holotype female (NSMT –Ap 506), Tochimoto, Otaki, Chichibu –shi, Saitama Prefecture, 35°56'58"N, 138°53'57"E, 900 m elevation, 1-V-1991, Y. Kuwabara leg. Paratypes: 2 males (NSMT –Ap 507–508), same data as for the holotype. <b>Other specimens examined.</b> One male, same data as for the holotype; 1 male, Ryugu, Oze moor, Katashina– mura, Gunma Prefecture, 36°55'59"N, 139°14'18"E, 1450 m elevation, 23-X-1994, litter of a forest dominated by <i>F. crenata</i> and <i>Q. crispula</i>, H. Sakayori <i>et al.</i> leg. <b>Description.</b> Body length 962 (871) µm. Head 93 (93) µm long, 61 (61–63) µm wide. Setae <i>aa</i>, <i>pa</i> and <i>m4</i> present, sensilla <i>as</i> and <i>ps</i> present (Fig. 40A); seta <i>sp</i> as long as <i>p</i>; sensilla <i>pp</i> rudimentary (Fig. 40F). Labral setae present (Fig. 40B). Seta <i>rs</i> inflated, equal to <i>sr</i> in length (Fig. 40B). On maxillary palpus (Fig. 40C) sensillum <i>md</i> slightly longer and thinner than <i>ml.</i> On galea (Fig. 40D) digit O longer and thicker than M and I. Mandible with 3 teeth (Fig. 40E). Clypeal apodemes weakly visible (Fig. 40B). Pseudoculus 13 (13) µm long, without inner structure (Fig. 40F), PR = 7 (7). Foretarsus length (Figs. 40G, H) 63 (63) µm; claw 12 (13) µm, TR = 5.4 (4.9); empodium 12 (13) µm, EU = 1.0; sensillum <i>s</i> slightly longer than claw, 15 µm. Sensillum <i>t1</i> closer to α <i>3</i> than to α <i>3’</i>, BS = 0.8; <i>t2</i> slightly spatulate; <i>t3</i> surpassing base of <i>z</i>; <i>a</i> broadened, closer to γ <i>1</i> than to γ <i>2</i>; <i>b</i> almost reaching base of <i>e</i>; <i>c</i> slightly broadened, reaching base of γ <i>3</i>; <i>d</i> broadened, reaching base of α <i>7</i>; <i>e</i> and <i>g</i> roundedly spatulate and long; <i>f1</i> thinly spatulate; <i>f2</i> broadened, reaching base of γ <i>5</i>; <i>a'</i> at same level with α <i>3</i>; <i>b'1</i> nearer to δ <i>3'</i> than to δ <i>4’</i>; <i>b'2</i> spatulate; <i>c'</i> absent. Length of middle tarsus 30 (28) µm, length of claw 9 (10) µm; hind tarsus 35 (36) µm, claw 10 (11) µm; empodia of both tarsi longer than 1/2 of claw length (Figs. 40I, J); on hind tarsus (Fig. 40J) <i>D2</i> and <i>D4</i> spine-like, but more slender than <i>D5</i>. Tracheal camerae large, contracted distally (Fig. 41A). Central lobe invisible. Laterostigmata II–III distinct, without inner structure. On female squama genitalis (Fig. 41B) caput processus duck's head-like, proximo-lateral sclerotization present on posterior half of stylus. Male genitalis with short basiperiphallar setae. Chaetotaxy as in Table 16. Thoracic and abdominal chaetotaxy almost identical to that of <i>E. imperiale</i>. <b>Diagnosis.</b> Among the congeneric species possessing two anterior and nine posterior setae on the abdominal sternite VIII, this new species is similar to <i>E. dimecempodi</i> and <i>E. imperiale</i> in possessing long empodia on the middle and hind tarsi. This new species differs form <i>E. dimecempodi</i> in having a pseudoculus without inner structure (three longitudinal lines in <i>E. dimecempodi</i>) and broadened foretarsal sensilla <i>c</i> and <i>f2</i> (linear in <i>E. dimecempodi</i>); and from <i>E. imperiale</i> in having inflated <i>rs</i> (simple in <i>E. imperial</i>) and linear <i>t3</i> and broadened <i>f2</i> foretarsal sensilla (broadened <i>t3</i> and linear <i>f 2</i> in <i>E. imperiale</i>). <b>Etymology.</b> The specific name is derived from the long empodia on middle and hind tarsi. <b>Distribution.</b> Japan (Honshu).
description: Published as part of <i>Nakamura, Osami, 2010, Taxonomic revision of the family Eosentomidae (Hexapoda: Protura) from Japan 2701, pp. 1-109 in Zootaxa 2701</i> on pages 69-72