Trevathana Chan & Chen & Achituv & Lin 2017
Creators: name: Chan, Benny Kwok Kan
name: Chen, Yi-Yang
name: Achituv, Yair
name: Lin, Hsiu-Chin
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Maxillopoda
Sessilia
Pyrgomatidae
Trevathana

description: Key to current species of Trevathana (modified from Achituv & Hosie (2013)
1 Tergum with internal tooth.............................................................................. 2
- Tergum without internal tooth........................................................................... 14
2 Internal tergal tooth axis parallel to basal margin............................................................. 3
- Internal tergal tooth axis perpendicular to basal margin........................................................ 5
3 Scutum very elongate, occludent margin>4 times longer than articular margin..................................... 4
- Scutum elongate, occludent margin <4 times longer than articular margin.................................... T. jensi
4 Outer lamina with up to 21 low but distinct ribs, same size as inner lamina............................... T. mizrachae
- Outer lamina with indistinct ribs, smaller than inner lamina exposing parietal septa....................... T. margaretae
5 Scutal inter-locking tooth broad, projecting from apex of articular margin......................................... 6
- Scutal inter-locking tooth narrow, projecting medially from articular margin...................................... 7
6 Tergal internal tooth not extending beyond basal margin................................................ T. paulayi
- Tergal internal tooth extending beyond basal margin.............................................. T. dongshaensis
7 Scutum occludent margin ±3 times longer than articular margin................................................. 8
- Scutum occludent margin <3 times longer than articular margin................................................ 13
8. Cirrus II with conical spines............................................................... T. conica sp. nov.
- Cirrus II without conical spines.......................................................................... 9
9 Distal segments of posterior ramus of cirrus III with row of conical spines....................................... 10
- Distal segments of posterior ramus of cirrus III without row of conical spines................................ T. sarae
10 Basidorsal point of penis short, about 1/6 of basal segment of the penis.................................... T. dentata
- Basidorsal point of penis long, length> half of basal segment of the penis........................................ 11
11 Tergum with long tooth extending beyond carinal margin...................................... T. longidonta sp. nov
- Tergum with tooth not extending beyond carinal margin........................................... T. doni sp. nov.
12 Tergal apex approximately forming a right angle; carinal margin convex......................................... 13
- Tergal apex acute; carinal margin concave............................................................. T. isfae
13 Scutum with tooth near basi-tergal angle; tergum slightly beaked....................................... T. orientalis
- Scutum without tooth near basi-tergal angle; tergum not beaked...................................... T. synthesysae
14 Scutum with adductor ridge............................................................................ 15
- Scutum without adductor ridge.................................................................... T. tureiae
15 Tergal spur distinct, scutal adductor ridge extending beyond basal margin........................................ 16
- Tergal spur indistinct, scutal adductor ridge not projecting beyond basal margin.............................. T. niuea
16 Cirrus III with conical spines....................................................................... T. noae
- Cirrus III without conical spines.......................................................... T. taiwanus sp. nov.
description: Published as part of Chan, Benny Kwok Kan, Chen, Yi-Yang, Achituv, Yair & Lin, Hsiu-Chin, 2017, Description of five new coral associated Barnacles of the genus Trevathana (Balanomorpha: Pyrgomatidae) in Pacific Waters, pp. 151-202 in Zootaxa 4363 (2) on page 198, DOI: 10.11646/zootaxa.4363.2.1, http://zenodo.org/record/1098754