Zomus bagnallii and a new genus of schizomids ( Schizomida : Hubbardiidae ) from a greenhouse in Frankfurt am Main , Germany

A new genus of hubbardiid schizomid, Bucinozomus gen. nov. with the single species B. hortuspalmarum spec. nov., is described on basis to two male specimens found in the “Palmengarten” greenhouse in Frankfurt am Main, Germany. It clearly differs from other known genera by having a long and conical abdominal segment IX, as well as the following combination of characters: anterodorsal margin of femur IV produced at less than a 90° angle, metapeltidium divided, and pedipalps with prominent spinose setae. It differs from Trithyreus Kraepelin, 1899 by having the pedipalp trochanter with a mesal spur, leg femur IV not slender and a pedipalp tarsus with a shorter claw (half of tarsus length). Living sympatric with this new taxon were female specimens of Stenochrus portoricensis Chamberlin, 1922 and Zomus bagnallii (Jackson, 1908).

The only hubbardiid genera having the anterodorsal margin of femur IV produced at less than a 90° angle are Clavizomus Reddell &Cokendolpher, 1995 (Singapore, West Malaysia andJava), Heterocubazomus Teruel, 2007 (Cuba, West Indies), Reddellzomus Armas, 2002 (Cuba), Tayos Reddell & Cokendolpher, 1995 (Ecuador, South America), Thrithyreus Kraepelin, 1899 (Myanmar), and an undescribed genus from Guerrero State, Mexico, mentioned by Armas & Palacios-Vargas (2006).Bucinozomus closely resembles Trithyreus and Clavizomus by having spinose setae on the pedipalps, but it differs from the former by having a trochanter with a mesal spur, leg femur IV not slender, and a pedipalp tarsus with shorter spurs and claw (half of tarsus length).On the other hand, the female of T. grassii (Thorell, 1889) lacks eye spots.Clavizomus is characterized by having clavate setae on the body and legs; a mesal spur on the pedipalp trochanter is also lacking.The New World genera Heterocubazomus, Reddellzomus and Tayos clearly differ from Bucinozomus by having pedipalps without spinose setae, an anterior process of the propeltidium with 1+1 setae, male pedipalps not sexually dimorphic (Tayos, Reddellzomus), and the metapeltidium entire (Reddellzomus).
Etymology: The generic name is derived from the Latin noun bucina (trumpet), relating to the very attenuate last abdominal segments of the male, and the name Zomus Reddell & Cokendolpher, 1995.It is masculine in gender.
Remarks: Although this new genus is known only from male specimens, the diagnostic characters are sufficient for its correct identification.Distribution: Only known from the type locality (Fig. 15).
Female: Unknown.Etymology: The specific name is derived from the Latin words hortus (garden) and palmarum (genitive plural of palm), because the schizomid specimens were found in a greenhouse of the Palm Garden in Frankfurt.
Natural history: The only available specimens (two males) were found under stones in the palm garden (Palmengarten) of the Frankfurt greenhouse, sympatric with S. portoricensis.Comments: Korenko et al. (2009) wrote that "Stenochrus portoricensis […] has been accidentally introduced into many countries […] and even in Europe: […] Great Britain and Germany (Blick 2006, Cokendolpher et al. 2006)."On the other hand, according to Nedvěd et al. (2011), " Blick (2010) recorded S. portoricensis from Germany", but they wrongly cited this 2006-online-source.Also, Theo Blick (email to SR on August 2014) wrote that the records of S. portoricensis in Germany have not been published with this species name so far.

Discussion
Three schizomid species are now known to occur in German greenhouses.There is evidence that at least one of them reproduces in this habitat (Blick et al. 2006).Stenochrus portoricensis and Z. bagnallii are relatively widespread in the Frankfurt am Main greenhouse, where they became established more than ten years ago (Blick et al. 2006, Cokendolpher et al. 2006).But this is not the case for B. hortuspalmarum, only known from two male specimens collected in the Palmengarten.
Stenochrus portoricensis naturally occurs in several countries of the New World (Reddell & Cokendolpher 1995), from which it has been introduced into the Canary Islands and several European countries (Tab.1).Zomus bagnallii was imported to France from Sri Lanka.But the bizarre B. hortuspalmarum was inadvertently introduced into the German greenhouse from an unknown country, although some of its morphological characters clearly resemble those of certain south-eastern Asian genera (such as Clavizomus and Trithyreus), perhaps the area in which it naturally occurs.