Abstract
ABSTRACT Although originally described from St. Vincent in the Lesser Antilles, the goblin spider genus Ischnothyreus Simon appears to be an Old World taxon that is represented in the New World only by two presumably introduced, pantropical, synanthropic species: I. peltifer (Simon) and I. velox Jackson. Two specific names based on New World specimens (I. barrowsi Chamberlin and Ivie from Florida, and I. indressus Chickering from the Lesser Antilles) are placed as junior synonyms of I. velox, which is newly recorded from Mexico, Panama, Jamaica, Hispaniola, Venezuela, Brazil, Madagascar, the Philippines, the Marshall Islands, Hawaii, the Marquesas Islands, and New Caledonia. A third species, I. browni Chickering, that is supposedly from Costa Rica was apparently based on mislabeled specimens that are actually from the Philippines. The type specimens of I. browni resemble those of the Seychelle species Ischnothyrella jivani (Benoit) in that the dorsal abdominal scutum of males is extremely weak and that of...
Highlights
Simon (1891), in the first paper dealing with the generic-level diversity of New World oonopids, described a total of eight new genera, each based on a species collected on the tiny
In the present paper we argue that the same is true for a fourth genus, described initially as Ischnaspis Simon, a preoccupied name that was quickly replaced by Ischnothyreus Simon (1893a)
Our studies suggest that both of the species treated by Saaristo are widely distrib¬ uted, pantropical, synanthropic taxa that have been introduced into buildings in temperate areas of the northern hemisphere; I. peltifer has been taken even in Canada! The two species are sometimes even sympatric, and both have been collected in Florida, Mexico, Panama, Jamaica, St
Summary
Simon (1891), in the first paper dealing with the generic-level diversity of New World oonopids, described a total of eight new genera, each based on a species collected on the tinyNO. 3759 island of St. Baehr and Ubick (2010: 6) reported a slit-shaped external copulatory opening, situated near the anterior margin of the postepigastric scutum, in female Camptoscaphiella; a similar slit occurs at least in I. peltifer Female genitalic structure (i.e., the longitudinal row of pores accompanying the copulatory opening) may support the monophyly of Ischnothyreus plus Camptoscaphiella, whereas the male palps instead clearly support the monophyly of Camptoscaphiella plus Malagiella, which are united by a greatly enlarged palpal patella
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