Adelopsis triangulifer Szymczakowski, 1961

Gnaspini, Pedro & Peck, Stewart B., 2019, Redescription of the ‘ older Adelopsis’ species (Coleoptera: Leiodidae: Cholevinae: Ptomaphagini) based on the analysis of type specimens, Zootaxa 4696 (1), pp. 1-62 : 45-46

Adelopsis triangulifer Szymczakowski, 1961

( Figs. 209–219 )

Adelopsis triangulifer Szymczakowski, 1961: 142 [and Figs. 4–7 ], 1963: 670; Salgado, 2005: 963 (type seen [the only reference he made to the species in the whole text]), 2015: 3 (in Abstract). Here assigned to group triangulifer nov. Note: we here readopt the original spelling (see Taxonomic Note).

Adelopsis triangulifera ; Gnaspini, 1996: 539 (holotype seen; unjustified emendation—see Taxonomic Note); Gnaspini and Peck, 2001: 434 (tentative assignment to group camella); Salgado 2010: 213 (assignment to group ascutellaris), 2015: 34 [and Figs. 26–28 ].

Type material examined: Holotype male in NHRS (Gnaspini, 1996: 541). Labels: “Sta Catharina / Nova Teutonia / Brasil., /5.1939 / Fr. Plaumann ”. Specimen here illustrated.

Length: 2.0 mm (original description); 1.98–2.3 mm ( Salgado, 2015); 2.0 ( NHRS) and 1.9 ( NMPC) mm (our measurement).

Type locality: Nova Teutônia , Santa Catarina State, Brazil .

Additional material examined: 1 male (Szymczakowski det., 1963: 670— Brazil: São Paulo) in NMPC (Gnaspini, 1996: 541). Labels: “ São Paulo / Bras. Mráz lgt. / Mus. Pragense”. Note : the aedeagus, genital segment, and last ventrite confer with those of the holotype .

Taxonomic Note. Gnaspini (1996) corrected all species names in Adelopsis to the feminine gender. However, since latin words ending with -fer are either adjectives or nouns, and article 31.2.2. of ICZN (see ICZN, 1999) states that a name should be considered to be a noun in apposition when the original author did not state the intention either to use a noun or an adjective and there is no evidence of intention (although Szymczakowski wrongly used masculine adjectives for other species names in Adelopsis ), we here reestablish the original spelling.

Short Redescription. Eyes normal. Winged [differing from original description, as apterous]. Apex of the right lobe of the aedeagus pointy and triangular in both frontal and lateral views ( Figs. 209–212 ). Left lobe of the aedeagus subtriangular and broad, resulting in a narrow, slit-shaped dorsal opening ( Fig. 210 ). Flagellum shorter (about 1/ 4 in length) than aedeagus ( Fig. 210 ). Proportion aedeagus/elytron = 0.42, considerably large in comparison with other species in the genus. Spiculum gastrale of the genital segment short and straight ( Fig. 214 ). Male mesotibia regularly curved internally ( Fig. 218 ).

Female originally unknown. Salgado (2015) added some records from near the type locality illustrating the spermatheca (his Fig. 28 ).

Distribution. Brazil: Santa Catarina (original description; Salgado, 2015; here) and São Paulo ( Szymczakowski, 1963; here) States.

Taxonomic Remarks. The pointy aedeagus in both frontal and lateral views and the shape of the short left lobe of the aedeagus ( Figs. 209–212 ) seem to help in the recognition of this species. As commented above, for group triangulifer nov., the resemblance of the genital features with those of the genus Ptomaphagus is high, including the elongate, pointy tiped aedeagus, the straight spiculum gastrale of the genital segment, and the ‘simpler’ spermatheca (S-shaped [from Salgado, 2015], and not coiled as in most species of Adelopsis ), except for the trapezoidal ligula, typical of species of Adelopsis .

Figures

FIGURES 209–219. Adelopsis triangulifer Szymczakowski, 1961, holotype male in NHRS, from Nova Teutônia. 209–212, aedeagus, left lateral, dorsal, right lateral, and ventral views; 213, last ventrite; 214, genital segment; 215, antenna (last two antennomeres missing), dorsal view; 216, meso and metathorax, ventro-lateral view (of left side of specimen); 217, protarsus and protibia tip; 218, mesotarsus and mesotibia; 219, metatarsus and metatibia. Scale lines = 0.5 mm; a for figs. 209–214; b for figs. 215–219.

FIGURES 4–16. Adelopsis ascutellaris (Murray, 1856). 4-15, lectotype male in BMNH, from Caracas. 4, habitus; 5–9, aedeagus, left lateral, dorsal, right lateral, and ventral views, and frontal view of aedeagus apex; 10, last ventrite; 11, genital segment; 12, head, lateral view; 13, meso and metathorax, ventro-lateral view (of left side of specimen) [as = anapleural suture; cc = coxal cavity; mc = metastemal carina; msep = mesepimeron; mset = mesepisternum; mte = metasternum; mtet = metepisternum]; 14, mesotarsus and mesotibia; 15, metatarsus and metatibia; 16, paralectotype female in BMNH (same data), spermatheca. Scale lines = 0.5 mm; a for figs. 5–11, 16; b for figs. 4, 12–15.

FIGURES 26–27. Adelopsis brasiliensis Jeannel, 1936, holotype male in MNHN, from Blumenau. 26, head, lateral view; 27, meso and metathorax, ventro-lateral view (of left side of specimen). Scale line = 0.5 mm.

FIGURES 28–40. Adelopsis azzalii Szymczakowski, 1975 new status. 28–30, (probable) holotype male in CBCV, from Cueva de Hueque. 28, genital segment; 29, antenna, dorsal view; 30, meso and metathorax, ventro-lateral view (of left side of specimen); 31–39, additional male (same data). 31–35, aedeagus, left lateral, dorsal, right lateral, and ventral views, and frontal view of aedeagus apex; 36, head, lateral view; 37, protarsus and protibia; 38, mesotarsus and mesotibia; 39, metatarsus and metatibia; 40, female (same data), spermatheca. Scale lines = 0.5 mm; a for figs. 28, 31–35, 40; b for figs. 29, 30, 36–39.