Microeuraphia sp.

Pitriana, Pipit, Valente, Luis, von Rintelen, Thomas, Jones, Diana S., Prabowo, Romanus E. & von Rintelen, Kristina, 2020, An annotated checklist and integrative biodiversity discovery of barnacles (Crustacea, Cirripedia) from the Moluccas, East Indonesia, ZooKeys 945, pp. 17-83 : 17

Microeuraphia sp. Figure 11a-o , Table 1: species no. 55

Material examined.

Seram Island: 2 specimens, MZB Cru Cir 138, Pantai Waimeteng-Piru, 3°04'15.3"S, 128°11'45.8"E, coll. P. Pitriana & D. Tala, 21 Sep 2017.

GenBank accession numbers.

COI gene (MK995389, MK995390), 18S (MK981401, MK981402).

Diagnosis.

Shell small with six thin plates; basis membranous; scutum and tergum remain articulated, scutum higher than wide; mandible tridentate; caudal appendage absent; one individual with two penises.

Description.

Shell brownish (Fig. 11a, b ), depressed (Fig. 11c ); orifice diamond shaped (Fig. 11a, b ); overlap of ‘rostrolateral’ forming T junction (Fig. 11b ); scutum and tergum triangular, tergal margins straight (Fig. 11d, e ); cirrus I with anterior ramus longer than posterior (Fig. 11f ); mandible with smooth tridentate teeth (11o). Ranges of basal length 3.6-9.9 mm, basal width 3.0-9.1 mm, height 1.2-2.2 mm. Orifice of diamond shape with orifice length 1.5-4.5 mm, orifice width 0.7-3.6 mm (measurements for two specimens are presented in Suppl. material 1: Table S10).

Distribution.

In this study, Microeuraphia sp. was found on Seram Island (at Pantai Waimeteng, Piru) (a map with the occurrence of Microeuraphia sp. in the Moluccas is shown in Suppl. material 1: Fig. S5).

Remarks.

Microeuraphia sp. clustered as a unit, forming a well-supported clade in the COI tree (Fig. 29 ). Morphologically, one individual of this species exhibited two penises.

Figures

Figure 11. Microeuraphia sp. (MZB Cru Cir 136 - 1) a upper view b lower view c side view d external view of scutum and tergum e internal view of scutum and tergum f cirrus I g cirrus II h cirrus III i cirrus IV j cirrus V k cirrus VI l penis m maxilla n maxillule o mandible. Scale bars: 3 mm (a-c); 0.5 mm (d-l); 0.25 mm (m-o).

Figure 29. Bayesian phylogeny of COI gene sequences. High Bayesian posterior probabilities (≥ 0.85) are indicated by an asterisk at the respective node. Families with relevance for this study are highlighted by coloured rectangles. Sample labels in red indicate sequences newly generated for this study. Species names in bold indicate potential new species.