Penthetria distincta Hardy, 1945

Fitzgerald, Scott J., 2021, Penthetria Meigen (Diptera: Bibionidae): Revision of the New World species and world catalog, Zootaxa 4926 (4), pp. 451-500: 467-469

publication ID

https://doi.org/10.11646/zootaxa.4926.4.1

publication LSID

lsid:zoobank.org:pub:3ADD4A2B-A3F9-4379-A8FE-39DD867531F7

DOI

http://doi.org/10.5281/zenodo.4529516

persistent identifier

http://treatment.plazi.org/id/A157FD05-FFAD-4B57-FF2F-F962FCAD2555

treatment provided by

Plazi

scientific name

Penthetria distincta Hardy, 1945
status

 

Penthetria distincta Hardy, 1945  

( Figs. 9–11 View FIGURES 9–11 , 42 View FIGURES 42–45 , 48 View FIGURES 46–49 , Map 1 View MAP 1 )

Type Material. Holotype male (not examined): GUATEMALA: “Antigua,” 24 June 1923, E.G. Smyth ( USNM)   . Paratypes (examined): GUATEMALA: GUATEMALA: Guatemala City, 2 May 1923, E.G. Smyth, 4M ( USNM)   , 20 July 1923, 1M ( USNM)   ; SACATEPÉQUEZ: “ Antiqua ,” D.G. Eisen, 2M ( USNM)   ; “ Antiqua ,” 24 June 1923, E.G. Smyth, 1F (allotype) ( USNM)   ; QUETZALTENANGO: Volcan Santa María , Nov., Schaus & Barnes, 1M ( USNM)   .

Additional Material examined. EL SALVADOR: LA LIBERTAD: Santa Tecla, 7 14 95, P. A.B., 1M, 1F ( USNM)   ; GUATEMALA: GUATEMALA: Puerta Parada, 1850 m, Bosques cipres, J.C. Schuster, 15–22 XII 2012, 1M ( UVGC)   , 22–29 XII 2012, 2M ( SFC)   , 29 XII 2012 – 5 I 2013, 1F ( SFC)   , 22 II–1 III 2014, 1F ( SFC)   ; Puerta Parada, 1850 m, Casa Jack, 14.556630, -90.463362, 5–12 Jan 2013, J.C. Schuster, 1F ( SFC) GoogleMaps   ; Puerta Parada, 1840 m, 7–14 VII 2018, J.C. Schuster, 1F ( UVGC)   , 14–21 VII 2018, 1M ( SFC)   ; TOTONICAPÁN: Momostenango, 9 Dec. 1979, 1M ( UCDC)   ; MEXICO: CHIAPAS: 7200 ft., S. Crist. las Casas, 1 June 1969, Malaise trap, 5M, 1F ( CNCI)   ; Sn. Cristobal, 22.VII.1969, L.A. Kelton, 1M ( CNCI)   .

Diagnosis. Males of P. distincta   can be distinguished from all New World congeners by the following combination of characters: tergite nine with posteromedial emargination deep (nearly subdividing the tergite) ( Fig. 9 View FIGURES 9–11 ) with the apices of the resulting lobes truncate and shelf-like (best observed in posterior view) ( Fig. 10 View FIGURES 9–11 ), posteroventral edge of tergite nine with a field of densely-set, short, black, spine-like setae, which contrast the typical setae on the remainder of the tergite (difficult to see in undissected specimens), gonostylus shining, basally with long hairs, but more distally with only very minute and spare hairs, slender and apically coming to a narrowly rounded point ( Figs. 9–11 View FIGURES 9–11 ), ventromedial lobes of gonocoxite absent to very weakly developed ( Fig. 11 View FIGURES 9–11 ), and R 2+3 often with a basal appendix (as in Fig. 2 View FIGURES 2–3 ).

Remarks. P. distincta   is a fairly large species with male wing 7.0–9.5 mm (n=4) and female wing 12.0–12.5 mm (n=2) and is most similar to P. appendicula   (see “Remarks” under P. appendicula   ).

Geographic & Seasonal Distribution. Guatemala and Mexico ( Map 1 View MAP 1 ); additional Guatemalan records in Hardy (1945). Seasonal distribution summarized in Table 1.

USNM

Smithsonian Institution, National Museum of Natural History

UVGC

Collecion de Artropodos

SFC

Laboratory of Fishes

UCDC

R. M. Bohart Museum of Entomology

CNCI

Canadian National Collection Insects

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Bibionidae

Genus

Penthetria