Scydmaenozila , Jałoszyński, Paweł, 2014

Jałoszyński, Paweł, 2014, ' The curse of Horaeomorphus ': taxonomy of misplaced Australian Cyrtoscydmini (Coleoptera: Staphylinidae: Scydmaeninae), Zootaxa 3828 (1), pp. 1-76: 25-27

publication ID

http://dx.doi.org/10.11646/zootaxa.3828.1.1

publication LSID

lsid:zoobank.org:pub:B2FEAE60-7E51-45FA-A38F-930A084A5AAA

persistent identifier

http://treatment.plazi.org/id/03F68791-FFCF-1812-8FFE-3FD007C7F9D9

treatment provided by

Plazi

scientific name

Scydmaenozila
status

gen. n.

Scydmaenozila  gen. n.

Type species: Phagonophana macrosticta Lea, 1910: 189  (here designated).

Diagnosis. Body ( Figs. 72–75View FIGURES 72 – 79) elongate and strongly convex; head short and convex; vertex not projecting dorsocaudad, its posterior margin nearly straight or indistinctly concave in middle; supraantennal tubercles distinct but weakly raised and not accompanied posteriorly by pits; frontoclypeal groove present; eyes located in middle of head; tempora long and strongly curved toward occipital constriction; tempora, genae and postgenae ( Fig. 57View FIGURES 57 – 61) with dense bristles; 'neck region' distinctly demarcated from anterior part of head capsule by constriction and much narrower than vertex ( Fig. 57View FIGURES 57 – 61); hypostomal ridges ( Fig. 57View FIGURES 57 – 61; hr) sharply marked and long, reaching nearly to posterior tentorial pits and connected in front of them; posterior tentorial pits ( Fig. 57View FIGURES 57 – 61; ptp) elongate and located distinctly in front of transverse groove demarcating 'neck' ventrally; submentum ( Fig. 57View FIGURES 57 – 61; smn) without lateral sutures; each mandible with sharp and large subapical tooth ( Fig. 60View FIGURES 57 – 61; sat) and densely setose dorsomesal prostheca ( Fig. 60View FIGURES 57 – 61; pst); maxillary palpomeres III and IV ( Fig. 61View FIGURES 57 – 61; mxp 3–4) slender, strongly elongate; pronotum with two distinct pairs of antebasal pits ( Fig. 64View FIGURES 62 – 66; lp, ip) and additional, indistinct lateral pair of shallow impressions, without lateral and sublateral carinae or edges; prosternum laterally demarcated from hypomera by pronotosternal sutures ( Fig. 63View FIGURES 62 – 66; nss), with indistinct intercoxal carina; procoxal sockets ( Figs. 62–63View FIGURES 62 – 66; pcs) closed by posterolateral lobes of prosternum; prothoracic hypomera ( Fig. 62–63View FIGURES 62 – 66; hy) with large internal (adcoxal) parts not demarcated from sides of pronotum; hypomeral ridges ( Fig. 63View FIGURES 62 – 66; hyr) incomplete, visible only along anterior margins of adcoxal parts of hypomera; sides of pronotum with dense thick bristles ( Fig. 62View FIGURES 62 – 66) well visible in dorsal view; mesoventrite with short anterior ridge ( Fig. 67View FIGURES 67 – 71; ar) in middle connected with mesoventral process ( Figs. 67–69View FIGURES 67 – 71; msvp) which is narrow and weakly expanding ventrally but distinct and clearly separating mesocoxae, interrupted in front of anterior margins of mesocoxal cavities; ventro- and dorsolateral foveae ( Fig. 69View FIGURES 67 – 71; vlf, dlf) present; anterior metaventral process absent; metaventral intercoxal process ( Fig. 71View FIGURES 67 – 71) broadly subtriangular, with two barely discernible tiny denticles, without median notch; metacoxae ( Fig. 68View FIGURES 67 – 71; cx 3) narrowly separated in middle; each elytron with two deep and relatively large asetose basal foveae ( Fig. 65View FIGURES 62 – 66; bef) not connected by groove and well visible in dry-mounted specimens; aedeagus with free and slender parameres ( Fig. 70View FIGURES 67 – 71; pm).

Description. Body ( Figs. 72–75View FIGURES 72 – 79) large (BL 2.58–3.18 mm), strongly convex, elongate but moderately slender, with long appendages, pigmentation dark brown or (in one species) bicolorous, light brown with dark brown elytra bearing variously contrasting light brown spots, cuticle setose.

Head ( Figs. 57View FIGURES 57 – 61, 72– 75View FIGURES 72 – 79) with occipital constriction ( Fig. 57View FIGURES 57 – 61; occ) much narrower than vertex and dividing the head capsule into exposed anterior part and narrow posterior 'neck region' retracted into prothorax; eyes large and nearly circular, located in anterior part of head; tempora long and strongly curved posteromesally, with dense bristles; vertex transverse, uniformly convex, not projecting dorsocaudad, with rounded, nearly straight or slightly concave posterior margin sharply demarcated from occiput, densely covered with bristles directed posteriorly; frons confluent with vertex, transverse and subtrapezoidal, anteriorly steeply and abruptly lowering toward labrum; frontoclypeal groove present; antennal insertions broadly separated, located beneath distinct but weakly raised supraantennal tubercles.

Labrum ( Fig. 59View FIGURES 57 – 61) transverse and subtrapezoidal with nearly straight anterior margin, with numerous short anteroventral (anterior epipharyngeal) trichia projecting from under anterior margin, and with small number of long dorsal setae. Mandibles symmetrical, subtriangular, each with broad base and large subapical tooth ( Fig. 60View FIGURES 57 – 61; sat); prostheca ( Fig. 60View FIGURES 57 – 61; pst) present, with dense and thin setae along mesal margin and extending onto a large portion of dorsal surface, reaching mandibular base. Each maxilla composed of small cardo ( Fig. 61View FIGURES 57 – 61; cd) bearing two setae; subtriangular basistipes ( Fig. 61View FIGURES 57 – 61; bst); elongate mediostipes ( Fig. 61View FIGURES 57 – 61; mst); elongate galea ( Fig. 61View FIGURES 57 – 61; gal) and lacinia ( Fig. 61View FIGURES 57 – 61; lac); large, elongate palpifer ( Fig. 61View FIGURES 57 – 61; pfp); and strongly elongate and moderately large maxillary palp ( Fig. 57View FIGURES 57 – 61; mxp) composed of elongate palpomere I ( Fig. 61View FIGURES 57 – 61; mxp 1), strongly elongate, slightly clavate and slender palpomere II ( Fig. 61View FIGURES 57 – 61; mxp 2), large and strongly elongate palpomere III ( Fig. 61View FIGURES 57 – 61; mxp 3) broadest near apex, and small, slender, subconical and pointed palpomere IV ( Fig. 61View FIGURES 57 – 61; mxp 4). Labium ( Figs. 57–58View FIGURES 57 – 61) with large submentum ( Fig. 57View FIGURES 57 – 61; smn) not demarcated laterally from postcardinal parts of hypostomae; subtrapezoidal mentum ( Fig. 57View FIGURES 57 – 61; mn); and short prementum ( Fig. 58View FIGURES 57 – 61; pmn) bearing narrowly separated at bases long 3 -segmented labial palps ( Fig. 57View FIGURES 57 – 61; lp) and a pair of median bristles inserted on small rounded ligula ( Fig. 58View FIGURES 57 – 61; lg). Hypostomal ridges ( Fig. 57View FIGURES 57 – 61; hr) sharply marked, long and extending nearly to posterior tentorial pits, connecting in front of pits.

Gular plate ( Fig. 57View FIGURES 57 – 61; gp) large and subtrapezoidal, with rapidly narrowed anterior portion; gular sutures ( Fig. 57View FIGURES 57 – 61; gs) well-visible; posterior tentorial pits ( Fig. 57View FIGURES 57 – 61; ptp) narrow and slightly arcuate, located clearly in front of transverse groove ventrally demarcating 'neck region'.

Antennae ( Figs. 72–75View FIGURES 72 – 79) long and slender, gradually but only slightly thickening distally; antennomere XI longest.

Prothorax ( Figs. 62 –64View FIGURES 62 – 66, 72– 75View FIGURES 72 – 79) in dorsal view strongly elongate and broadest near anterior third, with rounded anterior margin and anterior parts of lateral margins, with weakly marked, blunt and obtuse anterior corners; posterior corners distinct but blunt and obtuse; posterior margin deeply bisinuate. Base of pronotum with two pairs of distinct antebasal pits not connected by groove or impression ( Fig. 64View FIGURES 62 – 66; lp, ip), additionally with indistinct lateral impressions, without lateral or sublateral carinae or edges. Sides of pronotum mostly with thick bristles ( Fig. 62View FIGURES 62 – 66) well visible in dorsal view.

Prosternum with moderately short basisternal part ( Figs. 62–63View FIGURES 62 – 66; bst) indistinctly demarcated from procoxal cavities ( Figs. 62–63View FIGURES 62 – 66; pcc); median part of sternum slightly raised but not carinate; procoxal sockets ( Figs. 62–63View FIGURES 62 – 66; pcs) closed by posterolateral lobes of prosternum; hypomera ( Figs. 62–63View FIGURES 62 – 66; hy) elongate, each divided into broad lateral part confluent with pronotum and narrower but still broad internal (adcoxal) part; hypomeral ridges ( Fig. 63View FIGURES 62 – 66; hyr) incomplete, visible only along anterior margins of adcoxal parts of hypomera; pronotosternal sutures ( Fig. 63View FIGURES 62 – 66; nss) entire, obscured by dense setation.

Mesocutellum ( Fig. 65View FIGURES 62 – 66; scl 2) subtriangular, in intact specimen hidden by posterior margin of pronotum overlapping with elytral base; mesoscutoscutellar suture ( Fig. 65View FIGURES 62 – 66; sss) present.

Mesoventrite ( Figs. 67–69View FIGURES 67 – 71) with narrow and distinctly demarcated anterior ridge ( Figs. 67–69View FIGURES 67 – 71; ar); mesoventral process ( Figs. 67–69View FIGURES 67 – 71; msvp) carinate and moderately expanding ventrally, anteriorly connected with anterior ridge and interrupted in front of anterior margins of mesocoxal cavities; sides of mesoventrite with shallow concave procoxal rests ( Figs. 67–69View FIGURES 67 – 71; pcr) filled with short setae (= setose impressions) but without asetose impressions; mesanepisternum with long prepectus ( Figs. 67–69View FIGURES 67 – 71; pre), sides of mesoventrite with moderately broad, deep and setose ventrolateral and dorsolateral fovea ( Fig. 69View FIGURES 67 – 71; vlf, dlf); mesocoxal projections ( Figs. 67–69View FIGURES 67 – 71; mcp) prominent, with mesocoxal sockets located on their mesoventral surface and visible in ventral view.

Metaventrite ( Figs. 68–69View FIGURES 67 – 71; v 3) subrectangular, anteriorly fused with mesoventrite, posteriorly shallowly bisinuate and with broadly subtriangular metaventral intercoxal process ( Fig. 71View FIGURES 67 – 71; mtvp) bearing two tiny denticles; anterior metaventral process absent. Metanepisterna and metepimera narrow.

Metafurca ( Fig. 69View FIGURES 67 – 71) with long stalk and divergent lateral furcal arms ( Fig. 69View FIGURES 67 – 71; lmfa).

Elytra ( Figs. 65View FIGURES 62 – 66, 72– 75View FIGURES 72 – 79) oval, each with two moderately large, deep and asetose basal foveae ( Fig. 65View FIGURES 62 – 66; bef) not connected by groove; humeral denticles and sub-humeral lines absent.

Hind wings well-developed, about twice as long as elytra.

Legs ( Figs. 66View FIGURES 62 – 66, 72– 75View FIGURES 72 – 79) long and slender; procoxae subglobose, mesocoxae oval, metacoxae strongly transverse; all trochanters short; all femora strongly clavate; tibiae and tarsi long and slender. Mesocoxae ( Fig. 66View FIGURES 62 – 66; cx 2) with largely asetose dorsal surface (adjacent to mesocoxal cavity) bearing numerous pores and bunches of long setae.

Aedeagus ( Figs. 70View FIGURES 67 – 71, 80– 96View FIGURES 80 – 88View FIGURES 89 – 96) elongate and moderately darkly sclerotized, relatively thick-walled, with symmetrical median lobe and symmetrical, complicated assemblage of internal sclerites; parameres ( Fig. 70View FIGURES 67 – 71; pm) free and slender, without apical setae.

Etymology. Scydmaenozila  is a combination of Scydmaen - and Oz, with feminine suffix. Gender feminine.

Composition and distribution. Four species of Scydmaenozila  have a disjunct distribution: one is known from the southernmost part of Western Australia, and three others from the south-eastern part of the continent (New South Wales, Australian Capital Territory and South Australia) and Tasmania. One species is known both from the continent and Tasmania. Additionally, three undescribed species represented by female specimens were also seen in ANICAbout ANIC samples, collected in Walpole-Nornalup National Park (Western Australia), Esperance (Western Australia), and Blundells Creek (Australian Capital Territory).

Remarks. Scydmaenozila  can be identified on the basis of dorsal characters: the large body, short head with distinct frontoclypeal groove, tempora and sides of pronotum with dense bristles; elongate pronotum broadest in anterior part and bearing two pairs of distinct antebasal pits, without grooves or carinae, and two distinct basal elytral foveae. The combination of medially connected and long hypostomal ridges; absent lateral sutures of submentum; incomplete hypomeral ridges; distinct mesoventral process separating mesocoxae; and metacoxae narrowly separated by subtriangular metaventral intercoxal process confirm identification.

ANIC

Australian National Insect Collection