Geostiba (Tropogastrosipalia) anlasi, Homson, 1974

Homson, 1974, Lichenology in North America, 1947 - 1972., Linzer biologische Beiträge 61, pp. 45-55 : 45-55

publication ID

https://doi.org/ 10.5281/zenodo.5434894

persistent identifier

https://treatment.plazi.org/id/6B4D2217-FFD6-AC76-F15E-248EFCB6FEE9

treatment provided by

Valdenar

scientific name

Geostiba (Tropogastrosipalia) anlasi
status

sp. nov.

Geostiba (Tropogastrosipalia) anlasi View in CoL sp.n. ( Figs 13-19 View Figs 13-19 , Map 3 View Map 3 )

Holotype: TR - Izmir [14], ca. 60 km WNW Izmir, 420 m SW Karaburun , meadow, 38°37'40N, 26°29'26E, 27.XII.2005, leg. Anlaú GoogleMaps / Holotypus Geostiba anlasi sp.n. det. V. Assing 2005 (cAss).

D e s c r i p t i o n: Large species, 3.9 mm (abdomen fully extended). Coloration: head blackish; pronotum and elytra reddish brown; abdomen blackish, with the apex and segments III-IV slightly paler; legs testaceous; antennae dark brown.

Facies as in Fig. 13 View Figs 13-19 . Head and pronotum with shallow fine microreticulation ( Fig. 14 View Figs 13-19 ). Eyes moderately small, weakly protruding from lateral outline of head, slightly less than half the length of postocular region in dorsal view.

abdomen; (16) right elytron in lateral view; (17) tergite VIII; (18) sternite VIII; (19) median lobe of aedeagus in lateral view. Scale bars: 13: 1.0 mm; 14-15: 0.5 mm; 16-18: 0.2 mm; 19: 0.1 mm.

Pronotum apparently without appreciable sexual dimorphism, distinctly convex in crosssection, approximately 1.15 times as wide as head and 1.05 times as long as wide ( Fig. 14 View Figs 13-19 ). Elytra with pronounced sexual dimorphism, approximately 0.55 times as long as pronotum.

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Abdomen rather shining; puncturation relatively sparse and fine on anterior tergites, very sparse and very fine on posterior tergites; microsculpture on tergites VI-VII very shallow, barely noticeable, on tergites III-V obsolete; segment III conspicuously elongated, ratio of width (across posterior margin) and length (from anterior margin of paratergite to posterior margin of tergite): 1.23 ( Fig. 15 View Figs 13-19 ); posterior margin of tergite VII with very indistinct narrow rudiment of a palisade fringe.

: elytra with ill-defined, somewhat granulose puncturation ( Fig. 14 View Figs 13-19 ); laterally with pronounced (long and strongly elevated, especially posteriorly) fold ( Fig. 16 View Figs 13-19 ); suture slightly elevated ( Fig. 14 View Figs 13-19 ); abdominal tergites III-V without tubercles; tergite VII without process; tergite VIII highly distinctive: posterior margin with pair of pronounced processes ( Fig. 17 View Figs 13-19 ); sternite VIII as in Fig. 18 View Figs 13-19 ; median lobe of aedeagus with dagger-shaped cristal process ( Fig. 19 View Figs 13-19 ); apical lobe of paramere shaped as in other species of the subgenus.

: unknown.

E t y m o l o g y: This remarkable species is dedicated to Sinan Anlaú, Izmir, who discovered the holotype.

C o m m e n t: The question whether the conspicuously long abdominal segment III is a character shared by both sexes or confined to males can be clarified only when females become available for examination.

C o m p a r a t i v e n o t e s: This highly distinctive species is easily identified among its congeners by several unique characters: the morphology of the male elytra (pronounced lateral folds, absence of pronounced sutural carinae), the elongated abdominal segment III, the absence of a process on the male tergite VII, and the shape of the male tergite VIII with a pair of pronounced processes at the posterior margin.

In order to account for this species, the key in ASSING (2005a) is modified as follows: 107 Abdominal segment III conspicuously elongated, ratio of width (across posterior margin) and length (from anterior margin of paratergite to posterior margin of tergite): <1.3 ( Fig. 15 View Figs 13-19 ).: elytra with pronounced lateral folds ( Figs 14, 16 View Figs 13-19 ); posterior margin of tergite VIII with pair of pronounced processes ( Fig. 17 View Figs 13-19 ); median lobe of aedeagus as in Fig. 19 View Figs 13-19 . Western Anatolia: Izmir province ( Map 3 View Map 3 ) ....... ................................................................................................................. G. anlasi sp.n. - Abdominal segment III strongly transverse, at least 1.5-1.6 times as wide as long.

: elytra without pronounced lateral folds; tergite VIII without pair of pronounced processes; aedeagus of different morphology, without cristal process....................107a 107a: tergite VII near posterior margin with – often weakly defined – subcircular median tubercle (Fig. 162 in Assing 2005a and Fig. A99 View Figs 98-107 : 200), which may be reduced to various degrees; elytra with distinct microsculpture and almost or completely matt. Species confined to the Taygetos range ( Greece: Pelopónnisos) or the Caucasus region..................................................................................................108 - tergite VII unmodified..........................................................................................109

D i s t r i b u t i o n a n d b i o n o m i c s: Geostiba anlasi may be endemic to the Ak Da÷ and adjacent mountains on the peninsula approximately 60 km WNW Izmir ( Map 3 View Map 3 ), a conclusion mainly based on the restricted distributions of its Turkish consubgeners. The holotype was found under a stone on a grassy slope at an elevation of only 420 m. Subsequent sifting of the surrounding area yielded some specimens of G. euboica , but no additional material of G. anlasi .

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V

Royal British Columbia Museum - Herbarium

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

Genus

Geostiba

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