Adelopsis diabolica, Gomyde & Gnaspini, 2019

Gomyde, Eduardo C. & Gnaspini, Pedro, 2019, Adelopsis diabolica, a new species of Ptomaphagini (Coleoptera: Leiodidae Cholevinae) from São Paulo State, Brazil, Zootaxa 4658 (1), pp. 175-182: 176-181

publication ID

publication LSID

persistent identifier

taxon LSID

treatment provided by


scientific name

Adelopsis diabolica

new species

Adelopsis diabolica   , new species

( Figs. 1–5 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5 )

Holotype, male ( MZSP). Type locality and data: Brazil: SP [São Paulo State]: Salesópolis; E. B. [Estação Biológica de] Boracéia ; 12–; B.H. Dietz and C.I. Yamamoto col.; code ‘MW09a’   . Paratypes, same data (exceptions stated between parentheses): 1 male (code ‘ MW 10 a’), 1 male (code ‘ MW 18 a’), 1 male (code ‘ MW 20 a’), 1 female (code ‘ MW 2 a’), 1 female (code ‘ MW 03 estufa’), 1 female (code ‘ MW 7 b’), 1 female (code ‘ MW 8 a’), 1 female (code ‘ MW 9 a’), 1 female (code ‘ MW 9 b’), 1 female (code ‘ MW 11 b’), 1 female (code ‘ MW 13 a’), 2 females (code ‘ MW 21 a’), 1 female (code ‘GW 18a, grand Wrinkler’)   .

Length (holotype): 1.8 mm; width: 1.0 mm.

Diagnosis and Description. General characteristics as listed above. Body ovoid, convex ( Figs. 1a, b View FIGURE 1 ). Color dark redish brown. Winged. Head as high as long in lateral view ( Fig. 1e View FIGURE 1 ); integument punctuated, punctures not organized in strigae ( Fig. 1f View FIGURE 1 ). Eyes slightly reduced ( Figs. 1e, g View FIGURE 1 )—proportion between length of eye and distance between base of antenna and rear margin of head = 0.7; proportion between height of eye and height of head at rear margin = 0.6. Antenna ( Figs. 1h, i View FIGURE 1 ) 1.45 times as long as pronotum; proportions of length of each segment and that of the 9th from 1st to 11th: 1.5, 1.25, 1.1, 0.65, 0.85, 0.75, 1.05, 0.6, 1.0, 1.1, 1.25; proportions of length and width of each antennomere from 1st to 11th: 1.8, 2.3, 2.1, 1.25, 1.25, 1.0, 1.25, 0.7, 0.95, 1.1, 1.25; antenna flatenned ( Figs. 1 View FIGURE 1 j–l)—dorsoventral/lateral ratio = 0.50. Last article of palp as long as penultimate ( Fig. 1d View FIGURE 1 ). Antenna with first two antennomeres and tip of apical antennomere color paler than others ( Fig. 1h View FIGURE 1 ). Pronotum transverse; integument with transverse strigae ( Figs. 1a, b View FIGURE 1 ). Elytra together twice as long as wide ( Fig. 1a View FIGURE 1 ), with transverse, slightly diagonal, strigae ( Fig. 1c View FIGURE 1 ). Third male ventrite with a pair of projections, with a medial emargination; fourth male ventrite deeply emarginate medially ( Figs. 1m, n View FIGURE 1 ). First four male protarsomeres expanded ( Fig. 2a View FIGURE 2 ), with discoidal tenent setae ventrally ( Fig. 2b, c View FIGURE 2 ). First segment of male protarsus 0.75 times as wide as the maximum width of tibia; proportions of length and width of each segment, from 1st to 5th: 1.15, 1.3, 1.1, 1.15, 5.4. Male mesotibia with a sharp medial curve internally ( Fig. 2d View FIGURE 2 ). Male metatibia straight ( Fig. 2e View FIGURE 2 ); ventral surface of metatarsomeres bearing ‘special setae’ (in both sexes) ( Fig. 2h View FIGURE 2 , ellipses). Tarsi of all legs (in both sexes) bearing a pair of empodial setae with asymmetric length ( Fig. 2f View FIGURE 2 , ‘est’), with the shorter empodial setae about 25% as long as the longer one; the distal margin of the terminal tarsomere with a pair of medial projections (hidden behind ‘est’ in Fig. 2f View FIGURE 2 ); claws with small dorsal spines close to their base ( Fig. 2f View FIGURE 2 , ‘sdc’) and with a few long and acuminate spines at their dorsolateral margin ( Fig. 2g View FIGURE 2 , ‘slc’); apex of tarsomeres armed with strong spines, lateral-ventrally (e.g., Fig. 2h View FIGURE 2 , arrows), except for the last tarsomere. Male genital segment with spiculum gastrale ( Fig. 3a View FIGURE 3 ) divided at apex, with long branches. Aedeagus ( Figs. 3 View FIGURE 3 b–j, 4 [a rotational view of the aedeagus, around its ‘longitudinal’ axis]) with an ample dorsal opening ( Figs. 3b, d View FIGURE 3 , ellipse); surface covered with ‘sensorial pores’ ( Fig. 3c View FIGURE 3 ); ligula subrectangular, apparently fused to the body of the aedeagus ( Fig. 4 View FIGURE 4 ). Both right and left lobes of aedeagus (‘rla’ and ‘lla’, respectively) present, and both bearing six ‘apical’ setae ( Figs. 3 View FIGURE 3 e–g); left lobe thin and elongate ( Figs. 3e, f View FIGURE 3 , ‘lla’); right lobe with short arm ( Fig. 3e View FIGURE 3 , ‘arm’) and apex subrectangular, with the apical margin emarginate and bearing a pair of projections (‘horns’) laterally ( Figs. 3 View FIGURE 3 e–g, ‘hrn’), the base of each projection with a pair of strong conic spines ( Figs. 3f, g View FIGURE 3 , ‘csp’); ventral face of the apical portion of the right lobe coated with bifid spines ( Figs. 3g, h View FIGURE 3 , ‘bsp’); internal knob present, subcylindrical and elongate, with a few ‘sensorial pores’ near apex ( Figs. 3f, i, j View FIGURE 3 , ‘ikn’). Flagellum thin, slightly sinuate, shorter (about 1/ 3 in length) than aedeagus, and bearing a ‘lid’ at the apex ( Fig. 3i View FIGURE 3 , ‘fla’). Parameres present, flat and thin, fused to the body of the aedegus except for their apical portion, which bears a pair of setae ( Figs. 3e, f View FIGURE 3 ). Proportion aedeagus/elytron = 0.39, considerably large in comparison with other species in the genus.

Female. Antenna ( Fig. 5a View FIGURE 5 ) shorter than in males, 1.15 times as long as pronotum. Protarsus seems slightly expanded laterally ( Fig. 5 View FIGURE 5 b—compare to Fig. 6 View FIGURE 6 , Adelopsis leo Gnaspini, 1993   ), in a smaller proportion when compared to males (as in Fig. 2a View FIGURE 2 ); apex of penultimate protarsomere bearing a few spatulate and elongate setae ventrally ( Fig. 5c View FIGURE 5 , ellipse), not present among males. Mesotibia curved ( Fig. 5d View FIGURE 5 ). Spermatheca coiled with 2-turns ( Fig. 5e View FIGURE 5 ).

Etymology. The name is given in reference to the presence of two projections (‘horns’) at the apex of the aedeagus, considering that “horns” are reminiscences of images of the devil (“diabolus” from Latin).

Distribution. Brazil: São Paulo State: known only from type locality.

Taxonomic Remarks. The aedeagus, with the apical projections, is unique and diagnostic for the species. The somewhat expanded female protarsus seems also to be unique in the genus, and is a very rare feature in the family as a whole (see Gnaspini et al., 2017).

Actually, in addition to the material here assigned to A. diabolica   , the material examined included two additional females (of an unidentified different species) with same data (except for codes ‘GW 18a, grand Wrinkler’, and ‘MW18a’), with a slender protarsus and a spermatheca with 5-turns. We used three features to relate females to males and assign them as paratypes of A. diabolica   : the shorter of the asymmetric empodial setae of the tarsi is about 25% as long as the longer empodial seta (whereas it is about 40% as long as the longer empodial seta in the two additional females cited above); the presence of strong spines on the apical margin of the first three metatarsomeres and ‘special setae’ on the metatarsus (not observed on those two additional females); and the distribution and size of apical spines on the tarsomeres. We were not able to relate those additional females to any species of Adelopsis   , because this spermathecal pattern has not been so far recorded.

Adelopsis diabolica   sp. n. is assigned to benardi   species group based on the presence of a left lobe and an ample dorsal opening in the aedeagus, and a male genital segment bearing a spiculum gastrale divided at apex, with long branches, although the tip of the aedeagus is not typical of that group.


Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo