Dichelops (Prodichelops) divisus ( Walker, 1867 )

Poock-Da-Silva, Priscila, Barão, Kim Ribeiro & Grazia, Jocelia, 2013, Contributions to the knowledge of Dichelops Spinola: description of a new species of Dichelops (Diceraeus) and of the male of Dichelops (Prodichelops) divisus (Hemiptera: Heteroptera: Pentatomidae: Pentatominae: Carpocorini), Zootaxa 3609 (1) : -

publication ID

https://dx.doi.org/10.11646/zootaxa.3609.1.4

publication LSID

lsid:zoobank.org:pub:94717F21-0352-4EB1-9BD2-154CABA2ABB4

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https://treatment.plazi.org/id/03D887D5-8545-3671-BDAB-D579FD0285D2

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scientific name

Dichelops (Prodichelops) divisus ( Walker, 1867 )
status

 

Dichelops (Prodichelops) divisus ( Walker, 1867)

( Figs. 2 View FIGURES 1 – 2 , 16– 21 View FIGURES 16 – 21 )

Diceraeus divisus Walker, 1867: 250.

Dichelops divisus ; Lethierry & Severin, 1893: 129; Kirkaldy, 1909: 68. Dichelops (Prodichelops) divisus ; Grazia, 1978: 90–91.

Type: BMNH, HEM. 1056, female, Bates col., deposited at Natural History Museum, London, United Kingdom. Examined .

Type locality. “Amazon Region”; according to label information, the specimen was collected in “St. Paulo” [São Paulo de Olivença, Rio Solimões, Amazonas, Brazil].

Head. Male proportion of antennal segments: I<II=III<IV>V; female proportion of antennal segments: I<II<III<IV<V.

Male genitalia. Pygophore quadrangular ( Fig. 21 View FIGURES 16 – 21 ); genital cup widely open dorsoposteriorly ( Figs. 16–19 View FIGURES 16 – 21 ). Dorsal rim in an open ‘U’, sinuate at base, slightly projected over segment X ( Figs. 18–19 View FIGURES 16 – 21 ). Superior processes of dorsal rim spine-like placed before middle of lateral margins of dorsal rim, clearly distant from paramere apices. Posterolateral angles almost truncate not projected posteriorly, with dense and convergent bristle tufts ( Figs. 16–19 View FIGURES 16 – 21 ). Ventral rim bisinuated, at middle in a shallow ‘U’ ( Figs. 16 –17, 20– 21 View FIGURES 16 – 21 ); inferior layer of ventral rim projecting ventrad in a beaklike structure, well-observed in profile and/or in posterior view of pygophore ( Figs. 16–17 View FIGURES 16 – 21 ). Bristles along ventral rim, especially over folded area inside genital cup, forming 1 + 1 tuft adjacent to posterolateral angles, 1 + 1 tuft laterad to ‘U’ concavity, and one tuft at middle of ‘U’ ( Figs. 17, 21 View FIGURES 16 – 21 ). Parameres long and slender, scyte like, laterad directed. Segment X almost pyriform, with 1 + 1 minute tubercles at middle ( Fig. 19 View FIGURES 16 – 21 ).

Measurements (n= 1). Body length 8.96; abdominal width 5.44; head length 1.92, width 2.0; interocular distance 0.96; length of antennal segments: I— 0.72, II— 0.8, III— 0.8, IV— 1.12, V— 1.6; pronotum length 2.16, width 5.6, width including spines 6.4; scutellum length 3.28, width 3.2.

Female measurements (n= 2). Body length 9.32 ± 0.06 (9.28–9.36); abdominal width 5.68 ± 0.11 (5.6–5.76); head length 1.8 ± 0.06 (1.76–1.84), width 2.2 ± 0.06 (2.16–2.24); interocular distance 1.12 ± 0.23 (0.96–1.28); length of antennal segments: I— 0.52 ± 0.06 (0.48–0.56), II— 0.76 ± 0.06 (0.72–0.8), III— 0.92 ± 0.06 (0.88–0.96), IV— 1.2, V 11.6; pronotum length 1.96 ± 0.06 (1.92 –2.0), width 6.2 ± 0.06 (6.16–6.24), width including spines 7.56 ± 0.51 (7.2–7.92); scutellum length 3.8 ± 0.06 (3.76–3.84), width 3.76 ± 0.34 (3.52 –4.0).

Material examined. BRAZIL, Amazonas, Estirão da Preta, Rio Liberdade , 11–15.V. 2011, D. Takyia col., sweep net ( INPA), 13, 1♀. COLOMBIA, Amazonas, Prefectura de Tabatinga [ Leticia ], 12.IV. 1992, A. Saenz col. ( UFRG), 1 ♀.

Comments. The male genitalia of Dichelops (Prodichelops) divisus are similar to the species of Dichelops ( Dichelops ) by the superior process of the dorsal rim as a spine-like structure, and by the parameres’ shape, wide at the base, tapering toward the apex. Dichelops (Prodichelops) divisus can be distinguished from the other subgenera by the dorsal rim of the pygophore being medially bisinuated, and by the ventral rim of the pygophore being ventrally projected, forming a beaklike structure.

Distribution. Western Amazonia, in Brazil and Colombia, corresponding to Emeri, Varzea and Madeira biogeographic provinces (sensu Morrone, 2006).

BMNH

United Kingdom, London, The Natural History Museum [formerly British Museum (Natural History)]

HEM

HEM

INPA

Brazil, Amazonas, Manaus, Instituto Nacional de Pesquisas da Amazoonia, Colecao Sistematica da Entomologia

UFRG

Brazil, Rio Grande do Sul, Porto Alegre, Universidade Federal do Rio Grande do Sul, Instituto de Biologia

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Pentatomidae

Genus

Dichelops

Loc

Dichelops (Prodichelops) divisus ( Walker, 1867 )

Poock-Da-Silva, Priscila, Barão, Kim Ribeiro & Grazia, Jocelia 2013
2013
Loc

divisus

Diceraeus divisus Walker, 1867: 250
Loc

Dichelops divisus

Lethierry & Severin, 1893: 129
Kirkaldy, 1909: 68
Loc

Dichelops (Prodichelops) divisus

Grazia, 1978: 90–91