Hydropsyche lobata McLachlan 1884

Bemmoussat-Dekkak, Soumya, Abdellaoui-Hassaine, Karima, Sartori, Michel, Morse, John C. & Zamora-Muñoz, Carmen, 2021, Larval Taxonomy and Distribution of Genus Hydropsyche (Trichoptera: Hydropsychidae) in Northwestern Algeria, Zootaxa 4915 (4), pp. 481-505 : 494

Hydropsyche lobata McLachlan 1884

( Figs 10 , 11 )

Material examined: Chouly Wadi at Yebder ( CH 1): 1 Ƌ imago ( UTA) and 1 mature Ƌ pupa ( UTA), 21.vii.2019 .

Hydropsyche lobata morphotype 1 larvae: Chouly Wadi at Yebder ( CH 1): 30 ( UTA, UGS), 22.xii.2014, 7 ( UTA), 14.xi.2015, 11 ( UTA), 16.x.2015, 12 ( UTA), 08.xi.2016, 33 ( UTA), 16.ii.2019 .

Hydropsyche lobata morphotype 2 larvae: Khemis Wadi (KH1): 5 larvae (UTA, UGS), 30.i.2015 .

Description: Larva described by García de Jalon (1981) and Dakki (1986). Both morphotypes having wide frontoclypeal apotome with straight anterior edge ( Figs 10B , 11B ). Rectangular posterior prosternites darkly pigmented ( Figs 10D , 11D ). Lateral parts of submentum long and narrow. Pro- and mesothoraces each with dark central longitudinal band ( Figs 10A , 11A ).

In H. lobata morphotype 1, dark oral spot close to dark median spot; in addition, both anterolateral spots clear and quite distinct, aboral spot small and oval ( Fig. 10B ).

Hydropsyche lobata morphotype 2 with dark oral spot, two light anterolateral spots, and completely clear, Vshaped aboral spot ( Table 2, Fig. 11B ).

Distribution and ecology: The species has been reported from the Iberian Peninsula ( Spain, Portugal) by González & Menéndez (2011), from the Pyrenees, northwest Africa, and the Iberian Peninsula, including the eastern Galician Mountains by Martin et al. (2014), and from Morocco and Algeria by Tobias & Tobias (2008).

Larvae were found at two high altitude sites at 854 and 916 m a.s.l. In our study, it is a thermophilic (19.5–21.18 ° C) and slightly rheophilic species living under heterometric pebbles. It displays preferences for sunny microhabitats.

Figures

FIGURE 10. Hydropsyche lobata McLachlan 1884, morphotype 1. 10A, head and thorax, dorsal; 10B, cephalic capsule, dorsal; 10C, cephalic capsule, ventral; 10D, posterior prosternites, ventral. [scale bar = 1 mm].

FIGURE 11. Hydropsyche lobata McLachlan 1884, morphotype 2. 11A, head and thorax dorsal; 11B, cephalic capsule, dorsal; 11C, cephalic capsule, ventral; 11D, posterior prosternites ventral. [scale bar = 1 mm].