Dicyphylus brachyscome, Randall T. Schuh & Michael D. Schwartz, 2016
publication ID |
https://doi.org/ 10.5281/zenodo.269465 |
persistent identifier |
https://treatment.plazi.org/id/03DE8796-BE7C-0459-79F9-3DA8FD598E46 |
treatment provided by |
Plazi |
scientific name |
Dicyphylus brachyscome |
status |
sp. nov. |
Dicyphylus brachyscome , new species
Figure 21, map 6, table 1, plates 6, 7
DIAGNOSIS: Recognized by generally palegreen coloration, black antennal segment 1, black basal and apical bands on antennal segment 2, and the dark, contrasting subapical bands on the hind femora; fuscous markings at base of cuneus and apex of membrane cells faint (pl. 6); endosoma with a long, slender, basally directed spine arising adjacent to secondary gonopore and with apical spines in form of an inverted horseshoe (fig. 21, pl. 7). Above-mentioned aspects of coloration similar to D. scaevolae , but that species with shorter antennal segment 2 and more pronounced markings on corium at inner angle of cuneus and on membrane. Apex of endosoma in D. brachyscome distinct from that of D. scaevolae , the latter with two short lateral spines and one long erect spine.
DESCRIPTION: MALE: Mean total length 2.42, mean pronotum width 0.72. COLORATION (pl. 6): Pale green; vertex medially and clypeal apex infuscate; antenna largely black, segment 1 with a pale apical ring, segment 2 pale medially; labium infuscate apically; hind femur with a contrasting dark, broad, subapical band; tarsi black. SURFACE AND VES- TITURE (pl. 6): Dorsum smooth, weakly polished and weakly shining; dorsum clothed with short, black, reclining, simple setae. STRUCTURE: Head (pl. 6): As in generic description; antennal segment 2 relatively long (0.76), 1.49 times width of head. Thorax (pl. 6): As in generic description. Hemelytron: As in generic description. GENITALIA (fig. 21, pl. 7): Pygophore: Conical with shallow indentation on posterior margin, ventrad of left paramere insertion. Endosoma: J-shaped, basal fusion of straps on left side; strap with short, weakly sclerotized flange or broad spine at midpoint, moderately long, slender, proximally directed lateral spine subtending secondary gonopore, and three apical spines, two forming U-shaped membrane-bounded apex, and one sometimes serrate subapical spine; flattened and with small, slightly expanded membranous subapex; secondary gonopore subapical, small curved spine projecting from edge of gonopore distally. Phallotheca: Posterior apical surface with two dispersed fields of denticles; posterior dorsal edge serrate, broadly curving ventrad on anterior surface. Parameres: Left paramere with dorsoposterior margin undulating, slightly elevated dorsad; posterior process gently deflected; anterior process short, somewhat truncate, base covered with broad field of spicules; prominent seta apparently absent; right paramere with small anteriorly directed apical projection.
FEMALE (pl. 6): Coloration as in male; structure as in generic description; mean total length 2.40, mean pronotum width 0.74.
ETYMOLOGY: Named for the asteraceous genus Brachyscome , one of the known hosts; a noun in apposition.
HOSTS: Recorded from Brachyscome ciliaris (pl. 31A), Parthenium hysterophorus (Asteraceae) and Solanum sp. ( Solanaceae ).
DISTRIBUTION (map 6): Known from the Alice Springs area of Central Australia.
HOLOTYPE: AUSTRALIA: Northern Territory: Kings Canyon, Watarrka National Park, 24.25001°S 131.5689°E, 633 m, 0 2 Nov 2001, Cassis, Schuh, Schwartz, Silveira, Wall, Solanum sp. ( Solanaceae ), det. Field ID, 1♂ (AMNH_PBI 00411893) (MNT).
PARATYPES: AUSTRALIA: Northern Territory: 1 km S of Henbury Craters Nature Reserve, 24.56668°S 133.1234°E, 457 m, 29 Oct 2001, Cassis, Schuh, Schwartz, Silveira, Wall, Brachyscome ciliaris (Steetz) Benth. var. lanuginosa (Asteraceae) , det. NSW staff NSW658413, 1♂ (00391072) (AM), 3♂ (00098285, 0 0 0 98286, 00097153), 9♀ (00098287–0 0 0 98294, 00097154) (AMNH). Kings Canyon, Watarrka National Park, 24.25001°S 131.5689°E, 633 m, 0 2 Nov 2001, Cassis, Schuh, Schwartz, Silveira, Wall, Solanum sp. ( Solanaceae ), det. Field ID, 5♂ (00391071, 0 0 411888, 00411890-00411892), 6♀ (00411915-00411920) (AM), 14♂ (00411880– 0 0 411886, 0 0 411889, 0 0 411944–0 0 411947, 0 0 39 2821, 00392822), 20♀ (00411894–0 0 411907, 0 0 41 1909, 0 0 411912, 0 0 411948–00411951), Parthenium hysterophorus L. (Asteraceae) , 1♂ (00097772), 2♀ (00097150, 00097773) (AMNH) Solanum sp. ( Solanaceae ), det. Field ID, 1♂ (00411887), 4♀ (00411910, 0 0 411911, 0 0 411913, 00411914) (MNT).
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