Hercostomus appendiculatus (Loew, 1859) (Dolichopodinae)

Pollet, Marc, Andrade, Rui, Gonçalves, Ana, Andrade, Pedro, Jacinto, Valter, Almeida, Jorge, Braekeleer, Anja De, Calster, Hans Van & Brosens, Dimitri, 2019, Dipterological surveys in Portugal unveil 200 species of long-legged flies, with over 170 new to the country (Diptera: Dolichopodidae), Zootaxa 4649 (1), pp. 1-69 : 37-38

61. Hercostomus appendiculatus (Loew, 1859) (Dolichopodinae)

( Figs 3O , 7G )

Number of specimens recorded. 263.

Distribution. Southwestern European distribution ( Spain, Portugal, France); also North Africa. Portugal: 10 provinces (see also Naglis & Barták 2015).

Ecology. Though being collected in all macrohabitat categories except for mountainous biotopes, this species seems to prefer agricultural land, marshlands and banks of water bodies. It has been collected abundantly in Portugal at seepages in mixed forest and on pebbly river banks. This species is not recorded from northwestern Europe.

Rarity (%). 29.9 (common).

Activity period. April–July.

Remarks. Czech specimens identified as H. appendiculatus ( Olejnicek & Barták 2000) proved to belong to Poecilobothrus , which renders its occurrence in the Czech Republic erroneous.

Figures

FIGURE 3. Selected Portuguese species. A. Chrysotus blepharosceles (♀); B. Chrysotus cilipes (♂); C. Chrysotus laesus (♂); D. Diaphorus exunguiculatus (♂); E. Dolichopus andalusiacus (♂); F. Dolichopus atratus (♂); G. Dolichopus diadema (♂); H. Dolichopus latilimbatus (♂); I. Dolichopus nubilus (♂); J. Dolichopus plumipes (♂); K. Dolichopus signifer (♂); L. Dolichopus tanythrix (♀); M. Gymnopternus cupreus (♂); N. Gymnopternus silvestris (♂); O. Hercostomus appendiculatus (♂); photos by Rui Andrade, except for C by Leo Verdoodt.

FIGURE 7. Selected Portuguese habitats of dolichopodid species. A. Arcozelo, October 2011 (Aphrosylus celtiber, A. ferox); B. Avintes, Parque Biológico de Gaia (PBG), July 2011 (Chrysotimus molliculus); C. Benfeita, Serra do Açor, May 2014 (Campsicnemus umbripennis, Rhaphium brevicorne); D. Canelas, Ria de Aveiro, September 2011 (Campsicnemus simplicissimus, Teuchophorus spinigerellus); E. Castro Laboreiro, Teso, May 2016 (Rhaphium longicorne); F. detail of same location; G. Coja, river Alva, May 2014 (Hercostomus appendiculatus); H. Esposende, May 2014 (Aphrosylus mitis); I. Lousã, July 2011 (Xanthochlorus silaceus).