In synonymy:
Artifex Kallal & Hormiga, 2018 = Artiphex Kallal & Hormiga, 2022 (Kallal & Hormiga, 2022b: 394, preoccupied, replacement name)

type Epeira melanopyga L. Koch, 1871; gender feminine

N.B.: replacement name for Artifex Kallal & Hormiga, 2018b: 1124 [urn:lsid:nmbe.ch:spidergen:04500], preoccupied in Hymenoptera by Silveira, 2008; described in the Araneidae, transferred to the Phonognathidae by Kuntner et al., 2019: 563; for the current familial placement see the note at the family.

In synonymy:
Artiphex mastersi (Bradley, 1876, T from Araneus) = Artiphex melanopyga (L. Koch, 1871) (Kallal & Hormiga, 2018b: 1125, sub Artifex).

Phonognatha joannae Berland, 1924a: 213, f. 118-120 (Dmf).
Artifex joannae Kallal & Hormiga, 2018b: 1130, f. 43A-D, 44A-G (f, T from Phonognatha).
Artiphex joannae Kallal & Hormiga, 2022b: 394 (T from Artifex).

Epeira melanopyga L. Koch, 1871: 97, pl. 8, f. 2 (Df).
Epeira mastersii Bradley, 1876a: 146, pl. 1, f. 6 (Dmf) [urn:lsid:nmbe.ch:spidersp:015010].
Singotypa melanopygia Rainbow, 1916a: 87, pl. 21, f. 9 (Dm).
Phonognatha melanopyga Kuntner, Coddington & Hormiga, 2008: 170, f. 11D, H-I (mf).
Phonognatha melanopyga Kuntner, Coddington & Schneider, 2009: 1452, f. 1C (m).
Artifex melanopyga Kallal & Hormiga, 2018b: 1125, f. 1D, 10C, 39A-I, 40A-G, 41A-I (mf, T from Phonognatha, S of Araneus mastersi).
Artiphex melanopyga Kallal & Hormiga, 2022b: 394 (T from Artifex).