Cosmosciara hartii ( Johannsen, 1912 )

Mohrig, Werner, Kauschke, Ellen & Broadley, Adam, 2019, Revision of black fungus gnat species (Diptera, Sciaridae) described from the Hawaiian Islands by D. E. Hardy and W. A. Steffan, and a contribution to the knowledge of the sciarid fauna of the Galápagos Islands, Zootaxa 4590 (4), pp. 401-439 : 414

Cosmosciara hartii ( Johannsen, 1912)

( Fig. 9 A – B )

Sciara hartii Johannsen, 1912 [ Johannsen (1912): 144].

Common synonyms: Cosmosciara perniciosa (Edwards) ; Plastosciara perniciosa Edwards.

Selected literature: Steffan (1973b): 1265 – 1266, fig. 1 – 2 (as Plastosciara perniciosa ); Menzel & Smith (2009): 32–33, fig. 21 – 25; Menzel et al. (2013): 288, fig 6 – 7 (both as Cosmosciara perniciosa ); Mohrig et al. (2013): 223 – 224, fig. 43 a – c (as Pnyxia hartii ); Broadley et al. (2018): 213 – 214, figs 7 A – B, 8 A – C, 9 A – D.

= Plastosciara (Plastosciara) latipons Hardy, 1956 syn. n.

[ Hardy (1956): 77, fig. 4 a – d].

Literature: Hardy (1960): 217, fig. 68 a – d; Steffan (1969): 690 – 692, fig. 8 a – h (as Plastosciara latipons ).

Material studied: Holotype : Male, iv.1955, Hawai‘i , O‘ahu, ‘ Ewa , light trap, leg. not known (BPBM, No. 2484). Conservation status. Embedded in Canada balsam. Head with palpus and antennae, wings and hypopygium isolated. All morphological structures rather strongly deformed.

= Plastosciara (Cosmosciara) brevicalcarata Hardy, 1956

Plastosciara (Cosmosciara) brevicalcarata Hardy, 1956 [ Hardy (1956): 73 –75, fig. 2 a – e].

Literature: Steffan (1973a): 360 (as Plastosciara (Termitosciara) perniciosa ).

Material studied: Holotype : Male, 6.xii.1952, Oahu, ex window, leg. C.P. Hoyt (BPBM No. 2481).

Conservation status. Embedded in Canada balsam. Head with palpus and antennae and hypopygium separated. All morphological structures are in good condition.

Comments. The species is characterized by a 1-segmented palpus with a small relict of the second segment, short flagellomeres, and a gonostylus with a short subapical tooth, covered with fine macrotrichia. Plastosciara latipons Hardy and Plastosciara (Cosmosciara) brevicalcarata Hardy are identical to Cr. hartii ( Johannsen, 1912) and therefore junior synonyms of the latter species.

Distribution. Cosmopolitan.

Figures

FIGURE 9 A–B. Cosmosciara hartii (Johannsen, 1912) Holotype of Plastosciara brevicalcarata Hardy. A. Gonostylus; B. Head and palpus.