Polypedilum (Asheum) beckae ( Sublette, 1964 ),

Pinho, Luiz Carlos & Silva, Fabio Laurindo Da, 2020, Description of two new species of Polypedilum (Asheum) and immature stages of Polypedilum (A.) curticaudatum (Diptera: Chironomidae), Zootaxa 4759 (2), pp. 179-190: 188

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Polypedilum (Asheum) beckae ( Sublette, 1964 )


Polypedilum (Asheum) beckae ( Sublette, 1964) 

( Figure 3View FIGURE 3)

Material analyzed. Dominican Republic, Santo Domingo, N18°29’41.5’’ W69°56’59.6’’, 14.vii.2015, FL Silva, ( MZSP)GoogleMaps  .

Diagnostic characters. Polypedilum (Asheum) beckae  can be separated from other Polypedilum  species by combination of: Adult male: tergite VII not strongly tapered anteriorly, balloon shaped gonocoxite, short gonostylus and boot shaped superior volsella. Pupa: Pedes spuri A and B absent, large dark spines on conjunctive IV/ V and L setae on abdominal segment IV strongly narrowed basally. Larva: Teeth of mentum of even height, very broad ventromental plates, strongly curved lateroposteriorly (identical to P. curticaudatum  ).

Distribution. The species is recorded from southeastern USA—North and South Carolina ( Epler, 2001), Georgia, Alabama ( Hudson et al., 1990), Florida ( Jacobsen, 2008) and Louisiana ( Sublette, 1964). It is now first recorded from Dominican Republic ( Fig. 5View FIGURE 5). As larvae, P. (A.) beckae  and P. (A.) curticaudatum  are identical, Brazilian larval records of P. (A.) beckae  (e.g. Roque et al, 2004, Silva & Farrell, 2017) should be regarded as doubtful.


Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo


Royal British Columbia Museum - Herbarium