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. 2019 Jan 28:(820):51-70.
doi: 10.3897/zookeys.820.27258. eCollection 2019.

Description of Triatomahuehuetenanguensis sp. n., a potential Chagas disease vector (Hemiptera, Reduviidae, Triatominae)

Raquel Asunción Lima-Cordón  1 , María Carlota Monroy  2 , Lori Stevens  1 , Antonieta Rodas  2 , Gabriela Anaité Rodas  2 , Patricia L Dorn  3 , Silvia A Justi  1   4   5
Affiliations

Description of Triatomahuehuetenanguensis sp. n., a potential Chagas disease vector (Hemiptera, Reduviidae, Triatominae)

Raquel Asunción Lima-Cordón et al. Zookeys. .

Abstract

A new species of the genus Triatoma Laporte, 1832 (Hemiptera, Reduviidae) is described based on specimens collected in the department of Huehuetenango, Guatemala. Triatomahuehuetenanguensis sp. n. is closely related to T.dimidiata (Latreille, 1811), with the following main morphological differences: lighter color; smaller overall size, including head length; and width and length of the pronotum. Natural Trypanosomacruzi (Chagas, 1909) infection, coupled with its presence in domestic habitats, makes this species a potentially important vector of Trypanosomacruzi in Guatemala.

Keywords: Trypanosoma cruzi; Chagas disease vector; Triatomadimidiata s.l..

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Figures

Figure 1.
Figure 1.
Triatomahuehuetenanguensis distribution map based on Bargues et al. (2008), Dorn et al. (2016), Justi et al. (2018) and this study. The red spots designate the places where the holotype and paratypes were collected, the green points refer to the locations where T.sp. aff.dimidiata was previously reported. Map insert highlights the department of Huehuetenango, where T.huehuetenanguensis holotype and paratypes were collected.
Figure 2.
Figure 2.
Comparison between T.dimidiata s. str. and T.huehuetenanguensis sp. n. AT.dimidiata female (left) and male (right) from Jutiapa (dorsal and ventral view) BT.dimidiata female (left) and male (right) from Huehuetenango (dorsal and ventral view) and CT.huehuetenanguensis sp. n. female (left) and male (right) from Huehuetenango (dorsal and ventral view). Photograph credits: RL and SJ.
Figure 3.
Figure 3.
Heads of T.dimidiata s. str. and T.huehuetenanguensis sp. n. Top panel, dorsal view of the head. Bottom panel, ventral view of the head. Abbreviations: o ocelli, ac apex of clypeus, ss stridulatory sulcus, r connections between rostral segments. Photograph credits RL and SJ.
Figure 4.
Figure 4.
Pronotum of T.dimidiata s. str. (left), and T.huehuetenanguensis sp. n. (right). Abbreviations: c collar, a anterolateral angles, h humerus and s scutellum. Photograph credits RL and SJ.
Figure 5.
Figure 5.
Ventral connexival plate and part of 4th urosternite of T.dimidiata s. str. (left), and T.huehuetenanguensis sp. n. (right). Abbreviations: cs connexival suture and s spiracles. Photograph credits RL and SJ.
Figure 6.
Figure 6.
Comparison between the external terminalia of T.dimidiata s. str. and T.huehuetenanguensis sp. n. Abbreviations: Gc 8 gonocoxite VIII; Gc 9 gonocoxite IX; Gp8 gonapophysis VIII; VII sternite; IX and X segments. Drawings RL. Photograph credits RL and SJ.
Figure 7.
Figure 7.
Maximum likelihood cytB and ITS-2 phylogenies. Bootstrap support values of the relevant clades are shown. Habitus of T.huehuetenanguensis and related species are shown to scale (10 mm).
See this image and copyright information in PMC

References

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