Table 5. Comparison of species Microlaimus modestus sp. n. with morphologically similar species (only males).
| M. acanthus | M. microseta | M. modestus | |
|---|---|---|---|
| L | 845–1,175 | 1,205 | 342–344 |
| a | 31.3–36.7 | 55 | 17 |
| b | 7.4–8 | 8.6 | 4 |
| c | 9.9–10.7 | 14.2 | 6–7 |
| c′ | 3.5 | 4.25 | 3 |
| Cephalic setae in relation to head diameter (%) | 40–50% | 25% | 20% |
| amph% | 67–75% | 60% | 57–55% |
| Amph/hd | 1.1–1.8* | 1.1 | 1.1–1.2 |
| Length of spicule along arc in relation to cloacal body diameter | 1.1–1.4 | 1.3 | 2–2.3 |
| Length of gubernaculum in relation to length of spicule along arc (%) | 53–60% | 54% | 50–56% |
| Precloacal supplements | + | − | − |
| Cuticular pores | − | − | − |
Notes:
Information (measurements/proportions) of males of the species Microlaimus that concomitantly have cephalic setae ≤50% of the head diameter; amphidial fovea between 1.1 and 1.5 times the head diameter; amphidial fovea >50% of head diameter.
The measurements are expressed in micrometers, or if noted, as a percentage or ratio. Present (+) or absent (−); a, b, c, c′ = de Man’s (1880) ratios; distance of amphidial fovea from anterior end in relation to head diameter (Amph/hd); percentage of the amphidial fovea diameter in relation to corresponding body diameter (amph%).
M. acanthus showed a greater variation in the relative position of the amphidial fovea (1.1–1.8 times the head diameter). Despite this, due to other similarities with the new species, we will include it in the table for comparison purposes.