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

Trogolaphysa stannardi sp. nov.

Figs 3 A, 5A–G, 6A–B, Table 1

Etymology. The epithet honors Lewis J. Stannard, entomologist at the Illinois Natural History Survey whose collecting trips to Mexico in the 1950's provided a large portion of the species described in the present contribution. Material examined. Holotype male, slide-mounted, MEXICO, Yucatan, Chichen Itza, Berlese sample, leaf mould from moist woods and dry cenote, 25.vi.1951. L.J. Stannard coll., acc. no. 49763, INHS 579,835; 2 paratypes in preparation and 10 in alcohol (all juveniles in poor condition) with same collection information as holotype.

Description. Size up to 2.6 mm.

Color pattern. Background color in alcohol preserved individuals light brown (Fig. 3 A), with light blue pigment on hind coxae and lateral margin of Abd. 1; distal margin of Ant. 1, whole of Ant. 2-4 and tibiotarsi evenly light blue

Head. Antennae up to 2.6x head length. Subapical sense organ not see. Sensilla in sense organ Ant. 3 normal rods. Eyes 6 (Fig. 5 B), eyes G and H absent; eye valley with 4–5 ciliate chaetae. Head dorsally with 6 anterior (A0, A2, A3, M2, S3, S5; Fig. 5 A) and 1 posterior (Pa5; Fig. 5 B) macrochaetae. Pre-labral chaetae ciliate. Denticles on distal margin of labrum fused basally, Y-shaped (Figs. 5 E–F). Labial triangle with M1M2M3M4rEL1L2A1–5 (Fig. 5 G); r stout, rather large and smooth, all other posterior chaetae ciliate. Post-labial field with 6–7 ciliate chaetae between columns I and O.

Body. Body macrochaetae (4-5)2/0244+0+6. Mesothorax (Figs. 5 C), with 1 anterior (a5) and 4-5 posterior (p3 complex) macrochaetae; inner most anterior chaetae in p3 complex a microchaetae in smallest female (Fig. 5 C middle inset). Metathorax (Fig. 5 C) with 2 (p2, p3) macrochaetae. Abd. 1 chaeta a6 absent. Abd. 4 (Fig. 6 A) with pseudopore inserted in field just posterior to T4; inner macrochaetae A3, A5, B4 and B5 (Fig. 6 A) present; A3 well anterior to T2; A5 inserted posterior to pseudopore; B4 inserted closer to B5 than to A5; in smaller individuals (1.9 and 2.2 mm) B4 much closer to B5 (Fig. 6 A inset) than in larger individuals; 6 large lateral macrochaetae present. Abd. 4 posterior chaetae 10–11+10–11.

Legs. Trochanteral organ with up to 27 chaetae. Metathoracic claw complex as in Fig 6 B: tenent hair spatulate on all legs, 1.2x as long as unguiculus; claws with 4 inner teeth, basal teeth subequal, small; proximal unpaired tooth shorter than basal teeth; distal unpaired tooth inconspicuous; inner teeth spread as 47%, 47%, 75%, 87%. Dorsal and lateral teeth ending on basal quarter of unguis, lateral teeth well developed. Unguiculus lanceolate, narrow in females (Fig. 6 B), normal in male; posterior edge smooth in females, serrate in male.

Furcula. Dens with 2 rows of ciliate spines: largest individual with 33 spines in inner row and 25 in outer row. Mucro with 4 teeth, basal teeth paired (Fig. 5 D); mucro square, 1.6–1.9x as long as width of distal end of dens and 0.79x as long as inner margin of metathoracic unguis.

Remarks. Trogolaphysa stannardi sp. nov. is the only Neotropical member of the genus with 6–8 eyes, 6 anterior dorsal head macrochaetae, 4–5 mesothoracic, and 2 metathoracic macrochaetae. Trogolaphysa quisqueyana Soto-Adames, Jordana & Baquero, 2014 is the only other eyed species with 6 anterior head macrochaetae, but it carries 6 macrochaetae in the p3 complex of the mesothorax and lacks metathoracic macrochaetae. The color pattern of T. stannardi sp. nov. is similar to that of T. clarencei sp. nov. and T. dimorphica sp. nov., but the three species differ in the number and identity of dorsal head macrochaetae, number of labial triangle chaetae in series M, presence or absence and shape of distal labral denticles, and number of meso- and metathoracic macrochaetae. Additional diagnostic characters for species with 6–8 eyes and 5–6 anterior head macrochaetae are provided in Table 1.