Bradysia bishopi Steffan, 1973,

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, Zootaxa 4590 (4), pp. 401-439: 406

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Bradysia bishopi Steffan, 1973


Bradysia bishopi Steffan, 1973 

( Fig. 3View FIGURE 3 A–D)

Bradysia bishopi Steffan, 1973  [Steffan (1973a): 353 – 355, fig. 1 a – f].

Selected literature: Hardy (1960): 227 – 228, fig. 75 c – e [as Sciara (Lycoriella) radicum Brunetti  , misinterpretation]; Steffan (1969): 719 – 722, fig. 20 a – g [as Bradysia radicum (Brunetti)  , misinterpretation]; Menzel & Smith (2009): 24 – 26, figs 4 – 6; Köhler & Menzel (2013): 68; Mohrig (2016): 12 – 13, fig 12 a – c (as Bradysia mutuata  ); Mohrig et al. (2018): 212 – 213, fig 7 A – C (as Bradysia centidens  ).

Material studied: Holotype  : Male, Hawai‘i, O‘ahu I., HW 162, F 9, leg. unknown (BPBM No. 9943). 3 males, Hawai‘i, O‘ahu, Kailua, 11.xi.1968, blacklight, leg. W.A. Steffan (1 in PWMP). Conservation status: Embedded in Euparal. Body and head separated, all details in good condition.

= Bradysia centidens Vilkamaa, Hippa & Mohrig, 2012  , syn. n.

Bradysia centidens Vilkamaa, Hippa & Mohrig, 2012  [Vilkamaa et al. (2012c): 28, fig. 2 A – D].

= Bradysia mutuata Mohrig, 2016  (syn. to B. centidens Vilkamaa, Hippa & Mohrig, 2012  ).

Literature: Mohrig et al. (2018): 212-213, fig.7 A–C.

Comments. Two specimens from the Hawaiian Islands, O‘ahu, Kailua, 6.xi.1968, 157, blacklight, leg. W.A. Steffan and one specimen from O‘ahu, Kailua, 2.xi.1968, HW 162, F 9, leg. W.A. Steffan, were misinterpreted by Steffan as B. radicum  . The illustration of the hypopygium of B. radicum  ( Figure 20View FIGURE 20) in Steffan (1969) is very similar to the illustration of B. bishopi Steffan  ( Figure 1dView FIGURE 1) in Steffan (1973a) and Figure 4View FIGURE 4 in Menzel & Smith (2009).

The species is characterized by 2 dorsally inserted spines distinctly separated from the 4–5 apical spines of the gonostylus. A comparison with the paratype of Bradysia centidens Vilkamaa, Hippa & Mohrig, 2012  from New Caledonia showed that B. bishopi  , B. centidens  and B. mutuata  are conspecific.

The slide labelled holotype bears the number BPBM 9943 which differs from the number listed in Steffan’s original description and in his types catalog (BPBM 9942) (Steffan 1973 a, Steffan 1976). Steffan (1973a) reported that the types were generation F 9, reared from a single female captured on the 11.xi.1968.

The distribution of B. bishopi  was reported by Menzel & Smith (2009) and Köhler & Menzel (2013) to include French Polynesia (Tahiti, Marquesas Islands), American Samoa (Tutuila), Samoa (Upolu, Savaii), and Fiji (Vanua Levu); however these were based on erroneous records by Edwards (see comments for B. radicum  ). The presence of B. bishopi  on these islands requires confirmation.

Distribution. Widespread in the Southern Hemisphere. Hawai‘i; Australia; New Caledonia; Thailand (Bangkok); Seychelles Islands; Galápagos Islands.