Artículos

A new Hyblaeidae species from Solomon Islands. Studies of Hyblaeidae 4 (Insecta: Lepidoptera)

Eine neue Hyblaeidae - Art von den Solomon Inseln. Studien zu Hyblaeidae 4 (Insecta: Lepidoptera)

Una nueva especie de las Islas Salomón. Estudios de Hyblaeidae 4 (Insecta: Lepidoptera)

Introduction

The Solomon Islands are situated south-east from New Guinea in the Pacific Ocean. The new species was collected in the Guadalcanal Island which is the island where the Capital of the Solomon Islands is situated. Information about the biogeography is given by CARVAJAL & ADLER (2005), KEPPEL et al. (2010) and LUCKY & SARNAT (2010).

Not much is known about the Pacific Islands Insect fauna (e. g. YANO, 1963; ROBINSON, 1975; FILARDI et al., 1999; TENNET, 1999). A new Arctiinae species of the genus Eugoa Walker, 1858 (Erebidae: Arctiinae) was recently described by BUCSEK & RINDOS (2018).

HYBLAEIDAE

The genus Hyblaea Fabricius, 1793 is known with about 20 species (DE FREINA & BUCHSBAUM, 2012; BUCHSBAUM et al., 2012, 2019) and some more undescribed species. Some species were synonymised by BERIO (1967) without giving any reason and with no exact explanation.

A further species, Hyblaea constellata Guenée, 1852 is recorded from Guadalcanal Island and wrong spelled as Hyblaea onstellata (sic) Guenée, 1852 (KODA & KUSIGEMATI 1985). The figures show that this is a species of the H. constellata species group. Several species of the H. constellata species group are known from the neighboring islands like New Guinea. BUCHSBAUM et al. (2019) described H. behounekiBuchsbaum, Speidel & Chen 2019 which belongs to the H. puera (Cramer, 1777) species group. DE FREINA & BUCHSBAUM (2012) described another species of the H. puera species group from the Island Mauritius in the Indian Ocean: H. mauricea de Freina & Buchsbaum, 2012.

Hyblaea solomonensis Buchsbaum & Chen, sp. n. (Figs 1-3)

Holotype: 1 ♀, S. Pacific. SOLOMON ISL.; Guadalcanal I. 50-80 m; Lunga riv. Env., 2-10 km S; of Barana, Honiara reg.; 23-IX-18-XII-2016; Sr. Jákl et Vlad. Gurko. Holotype in Collection Ulf Buchsbaum, Kranichfeld (CUBK), later to be deposited in Coll. Zoologische Staatssammlung München (ZSM). No Paratypes.

Description and differential diagnose

Wingspan: 38 mm, Forewing length: 17 mm. Ground colour of body and wings brown. Abdomen ends with dark orange tip. Forewings brown with white antemedian and subterminal fasciae from dorsum antemedian to inner margin. Postdiscal region paler brown. Hindwings dark brown with 4 orange spots at dorsum in the median region and at basal angle.

Underside of forewings brown. At dorsum pale yellow. From costa two wide orange stripes. Base orange. Hindwings orange with dark brown discal spot underlined with a brown stripe and brown marked terminal shade. From tornus to apex on the hindwing [underside] a brown waved line along termen. No other species and no specimens in the H. constellata group and also in all other Hyblaea species have such markings, this waved line and the large “underlined” discal spot.

Female genitalia: Papillae anales sclerotized and hairy, narrow, long. Anterior apophyses short. Ductus bursae long, wide, weakly sclerotized with same length as corpus bursae. Corpus bursae oval with a single pointed arrow-like signum. Other species similar to H. constellata with two signa and ductus bursae longer and thinner.

Distribution: Only known from the type locality on the Solomon Islands, Guadalcanal.

Biology: unknown.

Etymology: The species is called H. solomonensis after the locality where this species was collected, the Solomon Islands.

Discussion

The similarity in the external morphological and the genitalia characteristics place this species in the H. constellata species group. The species groups were suggested by CHANDRASEKHAR et al. (2008) based on their DNA analyses of Hyblaeidae species from all over the world. The sister species group H. puera has constantly two signa in the female genitalia. No other species in the H. constellata species group has a discal spot as described above. H. constellata Guenée, 1852 is described from Bengal (India) without indication of the exact locality and figured in BOISDUVAL & GUENÉE (1852) on plate 13, figure 6 which shows that this species is totally different from the here described new species.

The H. puera species group is based on the type species and type locality in Surinam (South America) with several more species in South and North America. The H. constellata species group is only known from Asia, with the type locality and type species from Bengal without indication of exact locality but the members of the group are widespread in whole Asia until New Guinea and Australia. It contains many species.

Acknowledgments

Many thanks to Dr. Wolfgang Speidel (Munich) for the discussion about the manuscript and his comments. Many thanks also to Dr. Antonio Vives (Madrid) for his kind help about the manuscript.

BIBLIOGRAPHY

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BOISDUVAL, J. B. A. D. & GUENÉE, A., 1852.– Histoire Naturelle des Insectes. Species Général des Lépidoptères. Noctuélites II, 6: 444 pp. Roret, Paris.

BUCHSBAUM, U., SPEIDEL, W. & M.-Y. CHEN, M.-Y., 2019.– Hyblaea behouneki sp. n. from West Papua (Indonesia) (Lepidoptera, Hyblaeidae. Studies of Hyblaeidae 3.– Mitteilungender Münchner Entomologische Gesellschaft, 109: 143-148.

BUCSEK, K. & RINDOS, M., 2018.– Description of a new species from the genus Eugoa Walker, 1858 (Lepidoptera: Erebidae: Arctiinae) from the Solomon Islands.– Zootaxa, 4504(1): 135-137.

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CHANDRASEKHAR, N., NEETHA, N. V., VAIDYAN, L. K. & M. BANERJEE, M., 2008.– Deciphering the molecular phylogenetics of family Hyblaeidae and inferring the phylogeographical relationships using DNA Barcoding.– Journal of Genetics and Molecular Biology, 19(3): 158-167.

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ROBINSON, G. S., 1975.– Macrolepidoptera of Fiji and Rotuma. A taxonomic & geographic study: 362 pp, 15 maps, 357 figs. E. W. Classey Ltd, London.

TENNET, W. J., 1999.– Notes on some Solomon Island Papilio Linnaeus, with description of four new subspecies (Lepidoptera: Papilionidae).– Nachrichten des Entomologische Vereins Apollo, N. F., 20(2): 207-230.

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Notas de autor

*Autor para la correspondencia / Corresponding authorUB.ento@mail.de