The dorsal chaetotaxy of first instar Trogolaphysa jataca, with description of twelve new species of Neotropical Trogolaphysa (Hexapoda: Collembola: Paronellidae) Author Soto-Adames, Felipe N. text Zootaxa 2015 4032 1 1 41 journal article 10.11646/zootaxa.4032.1.1 aeef3f9e-8a5d-4bb0-b0d9-908830c0f6a5 1175-5326 289744 CB9720EB-7BB7-4199-A835-A3266B0DDA6B Trogolaphysa laterolineata sp. nov. Figs 3 C, 8A–I, 9A–C, Table 2 Etymology. The epithet refers to the characteristic latero-posterior stripes Abd. 4. Material examined. Holotype , slide-mounted, MEXICO : Chiapas, Ocosingo, Berlese sample, debris in tree flange along Rio Virgin Pasture and 2nd growth woods. 25.vi.1950 , C. Goodnight, M. Goodnight and L. J. Stannard coll., acc. 49703, INHS 579,829; 3 paratypes in preparation and 11 (mostly small juveniles) in alcohol, same collection information as holotype . Description. Size up to 2.1 mm . Color p attern. Background color in 63 years old alcohol preserved specimens, reddish brown. Dark blue pigment ( Fig. 3 C) present distally on Ant. 1 and most of Ant. 2–4, coxae, trochanter, femora and basal 2/3 of collophore; Abd. 4 with paired ellipsoidal streaks along lateral margins. Head. Antenna up to 2.7x head length. Guard sensillum of subapical sense organ on Ant. 4 robust; pit and sensillum apparently absent. Sense organ of Ant. 3 normal rods. Eyes 6–8, eyes G and H reduced ( Fig. 8 C), often completely obscured ( Fig. 8 B); eye valley with 4–5 ciliate chaetae. Head dorsally ( Fig. 8 A) with 4 anterior (A0, A2, A3, M2) and 2 posterior (Pa5, Pm3) macrochaetae. Pre-labral chaetae ciliate. Spine on distal margin of labrum Y-shaped ( Fig. 8 D). Labial triangle with M1M2M3rEL1L2A1-5: anterior chaetae smooth; r short and smooth, all other posterior chaetae ciliate ( Fig. 8 E). Post-labial field ( Fig. 8 F) with 7 chaetae between columns I and O . Body. Body macrochaetae 70/0244+0+6. Mesothorax ( Fig. 8 G) with 1 anterior (a5) and 6 posterior (p3 complex) macrochaetae; Th. 3 without macrochaetae. Abd. 1 chaeta a6 absent. Abd. 4 ( Fig. 9 A) pseudopore posterior, but nearly paired to bothriotrix T4; inner macrochaetae A3, A5, B4 and B5 present; A3 anterior to T2; A5 closer to pseudopore that to B5; B4 equidistant from A5 and B5; laterally with 6 macrochaetae. Abd. 4 posterior chaetae 12+12. Legs : View of trochanteral organ obstructed in all individuals. Metathoracic claw complex as in Fig 9 C: tenent hair spatulate, 1.3x as long as unguiculus; claw with 3–4 inner teeth; basal teeth subequal, unpaired tooth smaller than smallest basal tooth; inner teeth spread as 28%, 32%, 55%, 85%. Dorsal and lateral teeth ending on basal quarter of unguis. Unguiculus lanceolate, posterior edge smooth ( Fig. 9 C). Furcula. Dens with 2 rows of ciliate spines: inner row with 23 spines; outer row with 9 spines. Mucro in adults more or less square, with 4 short, stout, sequential teeth ( Fig. 8 H); juvenile with rectangular mucro ( Fig. 8 I). Remarks. Trogolaphysa laterolineata sp. nov. is readily distinguished from all other Neotropical species by the characteristic lateral bands on Abd. 4. The new species is most similar to T. ocellata sp. nov. from which it can be distinguished by color pattern, the number of posterior head macrochaetae ( 2 in T. laterolineata sp. nov. , 1 in T. ocellata sp. nov. ) shape of distal labral papilla (Y-shaped in T. laterolineata sp. nov. , separated in T. ocellata sp. nov. ), number of labial chaetae M ( 3 in T. laterolineata sp. nov. , 2 in T. ocellata sp. nov. ) and relative position of Abd. 4 macrochaeta B5 (equadistant to A5 and B 6 in T. laterolineata sp. nov. , much closer to B 6 in T. ocellata sp. nov. ). All other species with four dorsal anterior head macrochaetae have a combination of macrochaetae different from the one present in T. laterolineata sp. nov. and T. ocellata sp. nov. ( Table 2 ). One individual, which appears to be a second instar (the dorsal chaetotaxy of the trunk is already reduced), shows the same general claw and mucro morphology seen in first instar T. jataca and T. paracarpenteri sp. nov. :the claw has two inner teeth ( Fig. 9 B), subequal in size, inserted at 32% of inner edge, whereas the mucro is 2.9x as long as the width of distal end of dens and evidently elongate ( Fig. 8 I). In addition, Abd. 4 chaeta B4 is not developed into a macrochaeta in the juvenile ( Fig. 9 A inset).