Trogolaphysa ocellata, Soto-Adames, Felipe N., 2015

Soto-Adames, Felipe N., 2015, The dorsal chaetotaxy of first instar Trogolaphysa jataca, with description of twelve new species of Neotropical Trogolaphysa (Hexapoda: Collembola: Paronellidae), Zootaxa 4032 (1), pp. 1-41 : 25-27

publication ID	https://doi.org/ 10.11646/zootaxa.4032.1.1
publication LSID	lsid:zoobank.org:pub:CB9720EB-7BB7-4199-A835-A3266B0DDA6B
DOI	https://doi.org/10.5281/zenodo.6096448
persistent identifier	https://treatment.plazi.org/id/038AC52E-FFD8-A461-FF3D-FBA1FEB17DFF
treatment provided by	Plazi
scientific name	Trogolaphysa ocellata
status	sp. nov.

Treatment

Trogolaphysa ocellata sp. nov.

Figs 4 View FIGURE 4 A–B, 14A–H Table 2 View TABLE 2

Etymology. The epithet ocellata refers to the dorsal eyespot-like markings on the fourth abdominal segment

Material examined. Holotype, in preparation, MEXICO: Chiapas, Ocosingo Valley, Finca Monte Libano, sweeping vegetation, 1–7.vii.1950, C. J. Goodnight, M. Goodnight and L. J. Stannard coll., INHS 579,833; 2 paratypes in preparation and 4 in alcohol, same collection data as holotype.

Description. Size: up to 2.1 mm.

Color pattern. Background color of 63 year old alcohol preserved specimens brown. Distribution of blue markings as in Figs. 4 View FIGURE 4 A–B blue color present on Ant. 2–4, gena, lateral margins of thorax, Abd. 2–3, second coxa, trochanter and femur of metathoracic legs, and eyespots on central part of Abd. 4.

Head. Antennae 3.1x head diagonal. Ant. 4 with subapical sense organ a minute peg barely breaking cuticle surface and fully enclosed in sensorial pit; guard sensillum separated from sensorial pit by 1 normal ciliate chaeta. Sense organ of Ant. 3 normal rods. Eyes 8+8, eyes G and H greatly reduced, eye G sometimes not visible; eye well with 3–4 ciliate chaetae. Head dorsally ( Fig. 14 View FIGURE 14 A) with 4 anterior (A0, A2, A3, M2) and 1 posterior (Pa5) macrochaetae. Pre-labral chaetae ciliate. Distal margin of labrum with 1+1 spine-like projections. Labial triangle with M1M2rEL1L2A1–5: anterior chaetae smooth; chaeta r short, thick and smooth, all other posterior chaetae ciliate. Post-labial field with 6 chaetae between columns I and O ( Fig. 14 View FIGURE 14 B).

Body. Body macrochaetae (6–7)0/0244+0+6. Mesothorax with 1 anterior (a5) and 5–6 posterior (p3 complex) macrochaetae, 3 macrochaetae often reduced in size, one sometimes present as microchaeta ( Fig. 14 View FIGURE 14 C and insets); metathorax without macrochaetae. Abd. 1 chaeta a6 present. Abd. 4 ( Fig. 14 View FIGURE 14 F) pseudopore inserted at level of T2; inner macrochaetae A3, A5, B4, B5 present; macrochaeta A3 well anterior to bothriotrix T2 and macrochaeta F1; A5 close to pseudopore; B4 displaced posteriorly near B5; with 6 large lateral macrochaetae. Abd. 4 posterior chaetae 14–16+14–16.

Legs. Trochanteral organ with up to 30 chaetae. Claw complexes as in Figs 14 View FIGURE 14 E, H; tenent hair spatulate, 0.92x as long as unguiculus; fore and middle legs with 4 inner teeth ( Fig. 14 View FIGURE 14 E); hind legs with 3 teeth ( Fig. 14 View FIGURE 14 H). Inner basal teeth subequal; inner teeth spread on fore and middle legs as 21%, 21%, 60%, 81%; inner teeth spread on hind legs 29%, 29%, 65%; unpaired tooth as long or shorter than basal teeth. Hind claw outer tooth minute, barely projecting; lateral teeth thick. Unguiculus smooth; either narrowly ( Fig. 14 View FIGURE 14 H) or normally ( Fig. 14 View FIGURE 14 E) lanceolate.

Furcula. Dens with 2 rows of ciliate spines: inner row with 50 spines; outer row with 27 spines. Mucro with 4 short, stout sequential teeth ( Figs. 14 View FIGURE 14 D, G); 1.8x as long as width of distal end of dens; 0.75x as long as inner edge of hind unguis.

Remarks. Trogolaphysa ocellata sp. nov. may be distinguished from all other New World members of the genus with 6–8 eyes by the presence of distinct eyespot-like markings on the fourth abdominal segment, having 4 anterior (A0, A2, A3, M2), but only one posterior (Pa5) head macrochaetae, and having 4, 4, 3 inner teeth on the pro- meso- and metathoracic legs, respectively. The dorsal chaetotaxy of T. ocellata sp. nov. is very similar to that in T. laterolineata sp. nov., but the two species can be distinguished by color pattern, shape of the spines on distal margin of labrum (separated in T. ocellata sp. nov., Y-shaped in T. laterolineata sp. nov.), number of M chaetae in labial triangle (2 in T. ocellata sp. nov., 3 in T. laterolineata sp. nov.), and the relative position of Abd. 4 macrochaeta B4 (more or less equidistant to A5 and B 5 in T. laterolineata sp. nov. and ostensibly closer to B 5 in T. ocellata sp. nov.; cf. Figs. 9 View FIGURE 9 A, 14F). Table 2 View TABLE 2 list diagnostic characters for species with 4 anterior head macrochaetae.