Hughleechia giulianii Perkins

Perkins, Philip D., 2007, A revision of the Australian intertidal water beetle genus Hughleechia Perkins (Coleoptera: Hydraenidae), Zootaxa 1527, pp. 17-29 : 20-24

publication ID	https://doi.org/ 10.5281/zenodo.177584
DOI	https://doi.org/10.5281/zenodo.6243247
persistent identifier	https://treatment.plazi.org/id/03820808-FFF6-FFA2-FF36-58105519FDFC
treatment provided by	Plazi
scientific name	Hughleechia giulianii Perkins
status

Treatment

Hughleechia giulianii Perkins View in CoL

( Figs. 1 View FIGURE 1 , 3 View FIGURES 3 – 4 , 5 View FIGURES 5 – 6 , 7–9 View FIGURES 7 – 9 , 14 View FIGURE 14 )

Hughleechia giulianii Perkins, 1981: 300 View in CoL .

Type Material. Holotype (male): AUSTRALIA: Western Australia: Fisherman’s Island, 30° 7' S, 114° 56' E, 28 April 1969, D. D. Giuliani. Deposited in the WAM.

Differential Diagnosis. Immediately differentiated from H. gracilis by the broader body form ( Figs. 1 View FIGURE 1 , 2 View FIGURE 2 ), larger size, sexual characters of males, and other features (see diagnosis of H. gracilis ).

Description. Size (length/width, mm), holotype: body 1.80/0.84; head 0.36/0.46; pronotum 0.46/0.60; elytra 1.08/0.84. Dorsum black, infrequently with faint metallic blue reflections; venter and legs dark brown.

Frons strongly granulose, sparsely pubescent at sides; interocular foveae oblique impressed lines, area between foveae flat; interocular tuberculi well developed, adjacent to posteromedian margin of eyes, sparsely setose. Frontoclypeal suture very shallowly bisinuate. Clypeus length 1/2 width, less strongly granulose and hence more reflective than frons, sparsely punctate; apicomedian margin upturned to form a blunt tooth. Labroclypeal suture weakly arcuate. Labrum length 1/2 width; apicomedian emargination well developed, hemispherical, at each side of which is a distinctive tooth; surface of labrum smooth and shiny. Maxillary palpus with penultimate segment moderately wide; ultimate segment tapering to apex, 3/4 length of penultimate. Mentum produced at side, shiny, very sparsely punctate. Submentum shiny. Genae swollen in midregion, shiny, finely sparsely punctulate. Postgena pubescent, punctulate.

Pronotum sparsely pubescent on reliefs; depressions granulose, reliefs punctate and less strongly granulose, hence more reflective than depressions; anterior margin weakly arcuate, with narrow hyaline border; sides rather strongly convergent from midlength; posterior margin with narrow hyaline border which is overlaid with a row of setae; median depression without setae, slightly constricted in midlength, anterior 1/2 more strongly granulose than posterior 1/2; a shallow depression on each side at base which connects to base of median depression, these oblique depressions with pubescence like that on reliefs; lateral fossulae well developed.

Elytra interlocked, distinctly declivous in apical 1/4; each elytron with five distinct discal rows of punctures, and three semi-serial rows laterally, some punctures confluent in basal 1/5, each puncture with a short, stiff, rather wide, recumbent seta; suture very slightly raised. Explanate margin moderately wide.

Prosternum evenly rounded in midregion, antennal fossulae well developed; coxae contiguous. Mesoventrite pubescent, with broad intercoxal process whose width at apex is about equal to length of last segment of maxillary palpus; carinae totally lacking, not even with remnants anteriorly. Metaventrite hydrofuge pubescent except for shiny triangular area in midregion which has only a few setae; intercoxal process broad, about equal in length and width to mesoventral intercoxal process, but with apex on a plane slightly higher than that of latter; posteromedian area between metacoxae broadly emarginate to receive intercoxal sternite.

Abdominal sternites 1–4 with hydrofuge pubescence laterally, pubescence much sparser on large medial area; sternite 5 entirely hydrofuge pubescent.

Legs moderately long and slender. Tarsi broadened apically, claws large. Segment 5 (last) of all tarsi longer than respective basal segments combined. Segment 4 slightly shorter than combined lengths of segments 1–3.

Aedeagus ( Fig. 3 View FIGURES 3 – 4 ) with parameres originating near midlength of main piece. Females slightly larger than males.

Distribution. Currently known from intertidal rocks and rock pools on the southwestern and southern coasts of Australia ( Fig. 14 View FIGURE 14 ).

Material examined (82 specimens). AUSTRALIA: New South Wales: Green Cape, rock crevices, 37° 15' S, 150° 3' E, 8 August 1968, D. D. Giuliani (5 WAM); South Australia: Point Sinclair, 32° 6' S, 132° 59' E, 18 November 1969, D. D. Giuliani (site 60) (2 SAM); Western Australia: 50 mi. S Dongara, rock crevices, 29° 20' S, 114° 55' E, 4 April 1969, D. D. Giuliani (5 WAM); Bald Head, Albany, rock crevices, 35° 6' S, 118° 1' E, 10 May 1969, D. D. Giuliani (10 WAM); Cape Naturalist, rock crevices, 33° 32' S, 115° 1' E, 30 October 1969, D. D. Giuliani (10 ANIC); Fisherman’s Island, rock crevices covered by high tides, dry rock crevices in the high tide splash zone, and usually most numerously in rock pools a few feet above the water line (created by splash and spray but seldom or never reached by waves), 30° 7' S, 114° 56' E, 28 April 1969, D. D. Giuliani (12 WAM); Little Anchorage, rock crevices, 30° 0' S, 114° 58' E, 24 April 1969, D. D. Giuliani (12 WAM); Peron Point nr. Rockingham, rock crevices, 32° 16' S, 115° 41' E, 28 September 1969, D. D. Giuliani (10 ANIC); Rottnest Island, rock crevices, beaches and points, 32° 0' S, 115° 36' E, 3 May 1969, D. D. Giuliani (10 WAM); small island just offshore of Little Anchorage, rock crevices, 30° 0' S, 114° 58' E, 25 April 1969, D. D. Giuliani (5 WAM).