Table 1 in Four new species of troglomorphic Coecobrya Yosii, 1956 (Collembola, Entomobryidae) from Thailand based on morphological and molecular evidence, with an updated key of Thai troglomorphic species

Table 1. Comparison of troglomorphic Coecobrya in Thailand: C. chumphonensis Zhang & Nilsai, 2017, C. cavicta Nilsai & Zhang, 2017, C. polychaeta Zhang & Nilsai, 2017, C. sirindhornae Jantarit, Satasook & Deharveng, 2019, C. nupa Christiansen & Bellinger, 1992. C. whitteni Nilsai and Jantarit sp. nov., C. troglobia Jantarit and Nilsai sp. nov., C. ellisi Jantarit and Nilsai sp. nov., C. phitsanulokensis Jantarit and Nilsai sp. nov. Key: c = ciliated chaetae, s = smooth chaetae,? = not given in literature description. Characters indicated in parentheses are rarely observed.
Characters/speciesC. chumphonensisC. cavictaC. polychaetaC. sirindhornaeC. nupaC. whitteni sp. nov.C. troglobia sp. nov.C. ellisi sp. nov.C. phitsanulokensis sp. nov.Body lengthup to 2.82 mm1.72 mmup to 2.58 mmup to 2.6 mm2.0 mm1.8-2.3 mm2.0-2.4 mm1.6-2.1 mm1.8-2.3 mmAnt./head ratio3.70-4.482.675.91-7.128.0-12.36.53.78-5.144.0-6.83.5-6.43.1-4.2Long smooth straight chaetae on Ant. Iabsentpresentabsentpresent?presentpresentpresentpresentNo. of paddle-like chaetae on Ant. II2-4?110-12?not seennot seennot seennot seenNumber of chaetae on clypeusPrefrontal area3s?3s3s?3s3s3s3sFacial area8s?2s; 7-10c2s; 7-10c?2s; 6c2s; 4c2s; 5c2s; 4-7cNumber of chaetae on dorsal headAn area2441?4535M series4330?3333Group II (Gr. II)6(7)431?444(5)4(5)A0macmacmicmes?macmacmacmacNumber of sublobal hairs on maxillary outer lobe334433344Lateral process of labial palpshortshortlonglongshortlonglonglonglongLabial chaetae shapemRel1l2mrel1l2M1m2rel1l2m1m2rel1l2M1m2rel1l2mrel1l2mrel1l2m(M)1m2rel1l2m1m2rel1l2Postlabial chaetae Xminuteminutenormalnormal?minuteminutenormalminuteNumber of chaetae along cephalic groove4s; 5-7c3-4s; 7-8c6-7s; 5-10c7-9s; 3-7c?5-6s; 1-2c1-2mics6s; 1c; 2mics2-5s; 1-5c; 2mics4-7s; 1-2c; 1-2(3-4)micsChaetotaxy of Th. IINumber of medio-medial mac4-637(6)322333Number of medio-sublateral mac334431233Number of posterior mac25-3230-3129-4015-1815?18-2015-1828-3131-33Number of mac on Th. III32-353535-4332-3515?23-2624-2729-3632-33Number of mac on Abd. I6-76-78-9646677Number of central mac on Abd. II334(3)222223(4)Chaetotaxy of Abd. IIINumber of central mac211111122Number of lateral mac33332?3333msnot seennot seenpresentnot seen?not seennot seenpresentpresentChaetotaxy of Abd. IVNumber of central mac77-96645589Number of lateral mac10-121198?6698Ventral tube chaetaeanterior face9-12c?12c10c?6-8c7-8c6-7c6-7cposterior face13?20-3120-3078-1314-1812-1312-15lateral flap7(10)?9-127-8s (5c)66-7s (1c)7-9s (1-2c)6-7s; 1-3c7-8sTenent hair shapeusually pointedpointedpointedpointedpointedclavate/pointedclavate/pointedpointedpointedNumber of ungual inner teeth323333332Unguiculus outer edge shapeserrateserrateserrate2-3 teeth?serrateserrate?serrateSmooth chaetae on trochanteral organ12-2215-1615-2512-181618-2119-2317-2319Chaetae on manubrial plaque4-744-10353-6c5c5-6c5-6cChaetae on ventrodistal part of manubrium11-15c13c15-25c8-10c?13c?10-12c13+13cMucronal spinenearly reaching mucronal apexnearly reaching mucronal apexnearly reaching mucronal apexnearly reaching mucronal apexbeyond mucronal apexnearly reaching mucronal apexnearly reaching mucronal apexnearly reaching mucronal apexnearly reaching mucronal apexLocalityChumphon, ThailandSatun, ThailandSatun, ThailandSatun, ThailandMaui, HawaiiKhon Kaen, ThailandKhon Kaen, ThailandPhetchabun, ThailandPhitsanulok, Thailand