Bolbapium parcepunctatum ( Arrow, 1913 )

Carvalho, Edrielly Carolinne & Vaz-de-Mello, Fernando Z., 2022, A taxonomic revision of Bolbapium Boucomont, 1910 (Coleoptera: Scarabaeoidea: Geotrupidae), Journal of Natural History 56 (13 - 16), pp. 769-828 : 805-807

Bolbapium parcepunctatum ( Arrow, 1913)

( Figures 10 (d), (e), (f), 17)

Bolboceras parcepunctatum Arrow, 1913: 462–463 (original description); Luederwaldt 1931: 445–447, 453–454 (review, key); Bacchus 1978: 114 (catalogue)

Bolboceras (Bolbapium) parcepunctatum: Boucomont 1932: 266–267 (key)

Bolboceras parcepunctata: Blackwelder 1944: 220 (checklist)

Bolbapium parcepunctatum: Martínez 1976: 539 , 542, 547 (checklist)

Diagnosis

Frons with formation of poorly developed interocular tubercles between eyes. Pronotum mesoanteriorly with bituberculated stucture, almost bidentade, with width equal to half the interocular width. Aedeagus in dorsal view, parameres elongated and with twisted base, greatly separated; in side view, the parameres are concave and extend beyond the posterior margin ( Figure 10 (d), (e), (f)).

Type material. The type series is deposited at BMNH. It was possible to analyse the material during the curator’s stay at the BMNH in Cuiabá; photos of the specimens were taken during this period.

Holotype. ‘ Bolboceras ♂ / parcepunctatum Arr / M.E. Bacchus det 1975/ HOLOTYPE; Bolbapium / parcepuntatatum / det. J. Krikken 1971; Bolboceras / parcepuntatum / type Arrow; Fry Coll/ 1905–100; Bahia / ♂; Holo/type [white circular label with red edges]’ ( BMNH).

Paratypes. ‘ Bolboceras ♀ / parcepunctatum Arr / M.E. Bacchus det 1975/ PARATYPE; Brazil / Stanford Exped./ 1913–56.; Ceara-Mirim, Rio/ Grande do Norte/ Brazil. W.M. Mann; Para /type [white circular label with yellow edges]’ ( BMNH).

‘ Bolboceras ♀ / parcepunctatum Arr / M.E. Bacchus det 1975/ PARATYPE; Bolbapium / parcepunctatum / det. J. Krikken 1971 Arr/ Bahia / Fry Coll./ 1905–100./ Para /type [white circular label with yellow edges]’ ( BMNH).

‘ Bolboceras ♂ / parcepunctatum Arr / M .E . Bacchus det 1975/ PARATYPE; Fry Coll./ 1905– 100.; Bahia; Para /type [white circular label with yellow edges]’ ( BMNH) .

Redescription

Body size: Length: 5.74–8.45 mm. Width: 4.44–6.10 mm. Head: Frons with interocular tubercles between eyes, not connected by transverse carina; region between the tubercles almost flat and with deep points. Pronotum: Pronotum mesoanteriorly with little elevated tubercle, almost bidentate, which can be more or less developed; depression marked by points behind the tubercle. Disc with sparse points, unevenly distributed. Male terminalia: In dorsal view, parameres elongated and with twisted base, greatly separated ( Figure 10 (d)); In lateral view, the parameres are concave and extend beyond the posterior margin ( Figure 10 (f)). Sexual dimorphism: Males have weak, almost imperceptible punctuation and the setae are absent in the clypeus; well developed frons tubercle, while females have up to four setae in the posterior region of the clypeus and the rough and carenaded surface; underdeveloped frons tubercles. Remarks: Arrow (1913) described the species based on a series collected in Bahia, by Alexander Fry in 1860; a male specimen of the series was designated as a type. Bacchus (1978) provided the following information about the type series: Holotype (male) Brazil: Bahia . Paratypes, Brazil: (1 male, 4 females) same data as the holotype; 1 female Ceara-Mirim, Rio Grande do Norte (W. M. Mann); 1 female, Independência, Parahyba ( Mann and Heath ) . The type series is deposited at BMNH.

Differential diagnosis. Bolbapium parcepunctatum is morphologically similar to B. borgmeieri , B. boillyi sp. nov., B. caesum , B. howdeni , B. modestum , B. sampaioorum sp. nov. and B. santanaorum sp. nov. in not presenting the transverse carina forehead interconnecting the interocular tubercles. However, it is easily differentiated by presenting a bituberculated projection. In addition, it is only possible to distinguish the species from Bolbapium santanaorum sp. nov. by male terminalia and geographic distribution, with B. parcepunctatum occurring exclusively in the northeast of the country while B. santanaorum sp. nov. occurs in the Central-West region, in the north of the southern part of the country and part of the northeast.

Geographical distribution. Brazil (Bahia, Ceará, Paraíba, Pernambuco and Rio Grande do Norte) .

Non-type material. 14 specimens.

BRAZIL: Bahia, without data (1♀ CEMT); Ubaíra, parc 32, 13°7 ʹ 6”S, 39°41 ʹ 24”W, 416mols, xi .2011, pitfall, C .M .P. Leite leg . (1♂ CEMT) . Ceará, Ubajara, PN Ubajara, Trilha da Samambaia , 3°50 ʹ 20”S, 40°53 ʹ 55”W, 850m, 17 .ii .2013, light, Vaz-de-Mello & Grossi leg . (1♂ CEMT) . Paraíba, Santa Teresinha, Faz . Tamandua , trap B1, [7°1 ʹ 31”S, 37°23 ʹ 31”W], 2 . v .2011, A .D .A. Lima leg . (1♂ CEMT); Same location, trap B1, 23 .v .2011, A .D .A. Lima leg . (1♀ CEMT); Same location, 21 .ii .2011, A .D .A. Lima leg . (1♀ CEMT) . Pernambuco, Caruaru , [8° 16 ʹ 33”S, 35°58 ʹ 54”W], 900 m, v .1972, J . Lima leg . (1♂ CEMT); Igarassu, RECD, [7°49 ʹ 42”S, 34°52 ʹ 26”W], 11 .v .2007, Cavalcanti et al. leg. (3♀ CEMT) ; Same location, 25 .v .2007, Cavalcanti et al. leg. (2♀ CEMT) ; Rio Grande do Norte, Natal, Parnamirim , [5°54 ʹ 41”S, 35° 16 ʹ 16”W], iv .1950, M . Alvarenga leg . (1 DZUP); Same location, xi .1949, M . Alvarenga leg . (1 DZUP).

Figures

Figure 10. Aedeagus. Bolbapium modestum (Castelnau, 1840) (a). dorsal view; (b). ventral view; (c). lateral view. Bolbapium parcepunctatum (Arrow, 1913) (d). dorsal view; (e). ventral view; (f). lateral view. Bolbapium santanaorum Carvalho and Vaz-de-Mello, sp. nov. (g). dorsal view; (h). ventral view; (i). lateral view. Bolbapium borgmeieri Martínez, 1976 (j). dorsal view; (k). ventral view; (l). lateral view.