Sicilitrombium, Aitlinger, 2013

Aitlinger, 2013, A new larval trombidiid, Sicilitrombium albanesianum nov. gen., nov. sp. (Acari: Prostigmata: Trombidiidae) from Sicily, Italy, with notes on Arknotrombium HAITLINGER 2007 and Javatrombium HAITLINGER 2009, Linzer biologische Beiträge 45 (2), pp. 1997-2004 : 1998

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Sicilitrombium   nov.gen.

T y p e s p e c i e s Sicilitrombium albanesianum   nov.gen., nov.sp.

D i a g n o s i s scutum subquadrate, rounded anteriorly, straight posteriorly. Setae AM, AL and PL, all with very fine setulae. AP> MA. Scutellum oval with 2 setae; its width less than width of scutum. One thin and nude seta on palpfemur. Palpgenu without setae. Palptibia with three nude setae. Palptarsus with two nude setae, two solenidia and two eupathidia. Palp tibial claw bifid. Hypostomalae thin, coveres with short setulae. All coxalae with setulae. Coxa II with two setae. Genu II and III with one solenidion. Inner claw on tarsus III normally developed.

E t y m o l o g y. Generic name is derived from the island name, the place of type species collection, and "-tromb-" as a root word of the superfamily.

R e m a r k s. The new genus Sicilitrombium   has on palpfemur one seta. In the family Trombidiidae   only three genera have one seta on palpfemur: Trombidium, Paratrombium and Pollicotrombium (M KOL 2007). Sicilitrombium   nov.gen. differs from these genera in thin seta on palpfemur vs. spine-like seta. Moreover, it differs from Trombidium in palptarsus with all setae nude vs. one seta barbed, AP> MA vs. AP <MA, scutellum oval, LSS <W vs. scutellum trapezoidal, LSS of similar width as scutum, medial seta 1a distinctly barbed vs. medial seta 1a nude or with few tiny setulae and tarsus III with paired claws and a claw like empodium vs. tarsus III with one normally developed claw and empodium; from Paratrombium in barbed setae AM vs. AM nude, coxala 1a with short setulae vs. coxala 1a pectinate, with several digitations and scutum not widened anteriorly vs. scutum widened anteriorly and from Pollicotrombium in palptibia with all setae nude, one of them distinctly longer than the remaining ones vs. palptibia with at least one seta barbed; all setae similar in length, scutum subquadrate vs. scutum distinctly elongated, setae PL placed on scutum vs. PL placed outside scutum and two solenidia on palptarsus relatively long vs. two solenidia on palptarsus very short.