Sagola opercularis Broun, 1915

Park, J. - S. & Carlton, C. E., 2014, A revision of the New Zealand species of the genus Sagola Sharp (Coleoptera: Staphylinidae: Pselaphinae: Faronitae), The Coleopterists Bulletin (mo 13) 68, pp. 1-156 : 153-154

Sagola opercularis Broun, 1915

( Figs. 77–78 )

Sagola opercularis Broun, 1915: 284 . Hudson 1923: 365, 1934: 184; Newton and Thayer 2005b; Nomura and Leschen 2006: 243.

Type Material Examined. Holotype: NEW ZEALAND: Mid Canterbury: 1♂ ( BMNH), glued on rectangular card, aedeagus dissected and mounted in balsam on a clear plastic card, “Type” [red label, printed]; “3698. ♂ ” [white label, printed]; “New Zealand Broun Coll. Brit. Mus. 1922–482.” [white label, printed]; “Rakaia 27.12.1912.” [white label, handwritten]; “ Sagola opercularis . ♂.” [white label, handwritten].

Diagnosis. This species can be distinguished from other Sagola species by the following combination of characters: posterior frontal fovea elongate; ventral surface of male head with W-shaped process bearing dense setae behind process; median lobe of male genitalia curved laterally, C-shaped.

Redescription of Male. Length 2.1 mm. Body brown, antennae, legs, maxillary palpi, and elytra paler ( Fig. 77a ). Head: Head round, widest across eyes ( Fig. 77b ). Antennomere 1 approximately 1.5 times longer than wide, 2 longer than wide, 3 subquadrate, 4–6 longer than wide, 7–10 subquadrate. Frontal sulcus deep, reaching hind point of eye ( Fig. 77a ). Anterior frontal fovea small round and partially covered by frontal rostrum, posterior frontal fovea elongate ( Fig. 77a ). Thorax: Prosternum as long as wide, widest at midpoint. Meso- and metathorax trapezoidal, longer than wide. Abdomen: Male tergite IV with pair of microtrichial patches. Aedeagus: Genitalia with claw-shaped apical lobe ( Fig. 77d ). Phallobase of median lobe symmetrical and round ( Fig. 77c–d ). Parameres symmetrical, with short setae from base to middle and long setae from middle to apex ( Fig. 77c ).

Type Locality. Rakaia Gorge , near Methven, Mid Canterbury, New Zealand .

Distribution. Mid Canterbury ( Fig. 78 : star).

Habitat. Unknown.

Figures

Fig. 77. Sagola opercularis (opercularis species-group). a) Habitus, dorsal view, b) Ventral surface of male head (arrow indicates W-shaped process bearing dense setae), c) Aedeagus, dorsal view, d) Aedeagus, lateral view. Scale bar a = 1 mm, b = 0.5, c–d = 0.1 mm.

Fig. 78 Known collection localities of New Zealand Sagola species. S. genalis: black circles; S. flemingensis: triangle; S. snaresensis: black square; S. opercularis: star.