Trogolaphysa trioculata Soto-Adames, 2015, sp. nov.

Trogolaphysa trioculata sp. nov.

Figs. 3 G, 20A–F Table 5

Etymology. The epithet refers to the presence of only 3+3 eyes.

Material examined. Holotype in preparation, MEXICO, Chiapas, Cacahuatan, Finca Cuauhtemoc, Quinine Grove, elevation 975 m, 3–4.vii.1950, C. & M. Goodnight coll., Berlese sample leaf mold, INHS 579,843; 1 paratype in preparation with same collection information as holotype.

Description. Size up to 1.1 mm.

Characters Eye Prelabral Labral Tenent Inner Basal Position Unguiculus Rows Mucro Species Number Chetae Spines Hair Ungual Ungual Unpaired Shape Dental Teeth

Shape Teeth Teeth Ungual Spines

Position Tooth

. strinatii 5+5 ciliate separated spatulate 3 middle distal lanceolate 2 4 Yoshii, 1988 subequal quarter half sequential

Color pattern. Specimens preserved in alcohol for 64 years light brown, patternless (Fig. 3 G).

Head. Antennae relatively short, 0.83x as long as head. Subapical sense organ of Ant. 4 not seen. Sense organ of Ant. 3 with normal rods. Eyes 3+3, eyes; only eyes A, B and C remain (Fig. 20 A). Eye valley with 1 ciliate chaeta. Head dorsally with 2 anterior (A0, A2) and 2 posterior (Pa5, Pm3) macrochaetae. Pre-labral chaetae ciliate. Distal margin of labrum smooth, without denticles. Labial triangle with M1M2rEL1L2A1–5: anterior chaetae smooth; r stout and smooth, all other posterior chaetae ciliate. Post-labial field with 5–6 chaetae between columns I and O.

Body. Body macrochaeta formula 60/0243+0+4. Mesothorax with 1 anterior (a5) and 5 posterior (p3 complex) macrochaetae (Fig. 20 B) Metathorax without macrochaetae. Abd. 1 chaeta a6 absent. Abd. 3 S-microchaeta d2 almost reaching bothriotrix m5 (Fig. 20 E). Abd. 4 (Fig. 20 F) with pseudopore in field posterior to T4; with inner macrochaetae A3, A5, B5; A 3 in field between T2 and T4; A5 closer to B5 than to pseudopore; lateral macrochaetae D3, E2, E3 and F1 present. Abd. 4 posterior chaetae 10+10.

Legs. Trochanteral organ V-shaped, with up to 14 chaetae. Metathoracic claw complex as in Fig 20 C; tenent hair acuminate, 0.56x as long as unguiculus; with 3 inner teeth, all keel- to weakly lunate-shaped, one paired tooth larger than other, longest tooth almost reaching unpaired tooth; all teeth originating around middle quarter of inner edge, teeth spread as 42%, 47%, 57%. Unguiculus weakly truncate and basally swollen, posterior edge smooth.

Furcula. Dens with 2 rows of ciliate spines: inner and outer rows with 15 and 12 spines respectively. Mucro with 4 teeth, basal teeth paired (Fig. 20 D); mucro rectangular, 3.0x as long as wide, and 1.4x as long as inner margin of metathoracic unguis.

Remarks. Trogolaphysa trioculata sp. nov. is the only Neotropical member of the genus with 3+3 eyes, acuminate tenent hair and 4 large lateral macrochaetae on Abd. 4. Five other species have reduced number of eye: T. alleni Yoshii, 1988 and T. millsi Arlé, 1939 with 2 eyes, T. tijuacana Arlé & Guimarães, 1979 with 4 eyes and T. strinatii Yoshii, 1988 with 5 eyes. Descriptions for all the species mentioned above are incomplete, but details of characters distinguishing them are presented in Table 5.