Nactus arceo ZUG, 2020
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|Higher Taxa||Gekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)|
|Common Names||E: Morotai Slender-toed Gecko|
|Synonym||Nactus arceo ZUG 2020: 37|
|Distribution||Indonesia (Maluku Islands, Morotai).|
Type locality: Morotai [2.3218° 128.4572°]
|Types||Holotype. BYU 7540, adult male, collected on 4 November 1944 by Ernest Reimschiissel (Figure 11). Paratypes. BYU 7331, unsexed juvenile, Morotai [2.3218° 128.4572°], collected on 4 November 1944 by Ernest Reimschiissel. Both specimens were given to the BYU collections with no further collecting data other than island of origin.|
|Diagnosis||Definition. A bisexual taxon of geckos (Gekko- ninae) of moderate adults (~50 mm SVL) with keeled subcau- dals, small postmental scales (6–12), no postmental-infralabial (PmLab) contact, moderate number of dorsal tubercle rows (18–19), and low number of tubercles (25–27) in parasagittal row (TubRow), tubercles on dorsal surface of thigh and crus, and modest number of precloacal pores (9). A diagnostic summary is given in Table 8.|
Coloration in life unknown.
Variation. The only other Morotai specimen is a 29.7 mm SVL unsexed juvenile. It matches or approaches (within 1 or 2 scales) the holotype in most traits, except for a larger post- mental (12). In spite of being a juvenile, its body proportions are also similar (within 2%) or identical to the adult. The presence or absence of precloacal pores in adult males is unknown.
In coloration, the juvenile is less boldly patterned, although it displays the dark-brown, white-edged chevrons from the neck onto the base of the tail.
|Comment||Distribution: see map in Zug 2020: 39 (Fig. 12).|
Presently known only from the two specimens collected in 1944 by a U.S. solider on active duty.
|Etymology||The specific name arceo is Latin for “prevent access to” or “guard.” It is proposed to honor the women and men of the World War II Allied forces who fought and freed New Guinea and the Lesser Sundas from tyranny. It is proposed as a noun in apposition.|
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