Hyboptera viridivittis Chaudoir, 1872

Erwin, Terry L. & Henry, Shasta C., 2017, Hyboptera Chaudoir, 1872 of the Cryptobatida group of subtribe Agrina: A taxonomic revision with notes on their ways of life (Insecta, Coleoptera, Carabidae, Lebiini), ZooKeys 714, pp. 61-127 : 93-94

Hyboptera viridivittis Chaudoir, 1872 Green-lined humps-backed beetle Figs 4B , 5E , 11

Hyboptera viridivittis Chaudoir, 1872: 164.

Lectotype.

(Here designated) Sex unknown. Brazil, Rio de Janeiro, Cantagallo (RF Sahlberg)(MNHP).

Derivation of specific epithet.

The specific epithet, viridivittis , is a feminine Latin adjective referring to the green line pattern of the pronotum.

Proposed English vernacular name.

Green-lined humps-backed beetle.

Diagnosis.

With the attributes of the genus and angulicollis species group as described above and adults with patches of bright metallic green para-medially on pronotum, elytra dark matte black, some individuals with hint of metallic green near basal margin. Venter with gular region, prosternal region, meso- and metathroax, and margins of abdominal sterna infuscated, otherwise rufous.

Description.

(Figs 4B , 5E ). Size: See Appendix 1. Length (SBL) medium for genus, ABL = 4.65-5.27 mm, SBL = 3.76-4.17 mm, TW = 2.18-2.59 mm.

Color: See diagnosis, above.

Luster: Matte, pronotum and elytra with metallic highlights.

Microsculpture: Mostly isodiametric or stretched, shallowly impressed, cells more stretched around elytral tubercles.

Head: Rugae moderately coarse, mostly transverse or angulate. Eye large, sub-hemispheric, evenly rounded anteriorly, subtly more prolonged posteriorly. Antenna short, barely reaching humerus. Labrum rectangulate, shallowly bilobed, anterior margin slightly emarginate. Neck finely transversely rugose.

Prothorax: Pronotum moderately broad, disc centrally depressed along midline with dense transverse rugae. Lateral margins broadly explanate and obtusely angulate medially then moderately arcuate to obtuse hind angle, base medially produced and rounded posteriorly.

Pterothorax: Normal for Agrina , fully winged. Elytron interval 3 with 8 and interval 5 with 6 unisetiferous tubercles, other intervals moderately convex, side margin narrowly explanate laterally, slightly more so medially. Elytron moderately broad and short, slightly narrower than the pronotum at the broadest part, apex truncate, slightly rounded with distal corner broadly and obtusely rounded, disc not significantly convex, basal third slightly depressed. All interneurs well-impressed.

Legs: Femur dorso-ventrally moderately depressed, tibia coequal in length, more depressed; tarsus less than half the length of the tibia, fourth tarsomere markedly bilobed and with tarsal pad of setae.

Abdomen: Sparsely setiferous; normal ambulatory setae on sterna 3-5; female with two pairs of ambulatory setae on sternum 6, medial pair of setae less than the length of lateral pair; males with only the lateral pair of longer setae.

Male genitalia: Phallus (Fig. 5E ) with ostium of 1/5 its length, catopic, apex moderately long, narrowly rounded, broad in dorsal aspect; endophallus with flagellum (mid-part obvious in illustration), flagellum not barbed. Parameres asymmetric, right very small, left larger.

Female genitalia: Not investigated, likely similar to that of H. lucida (Fig. 8 ).

Dispersal potential.

These beetles are macropterous and probably capable of flight. They are moderately swift and agile runners.

Way of life.

Adults are found in April-June, the early dry season, in lowlands (75-846 m.a.s.l.) in the Mata Atlântica.

Other specimens examined.

Brazil, Rio de Janeiro, Rio de Janeiro, 22.9522°S, 43.2109°W, 459m, 1883 (P Germain)(NMNH: ADP136142, female) , Santa Catarina, Nova Teutonia , 27.1833°S, 52.3833°W, 300-500m, April 1977 (F Plaumann)(CAS: ADP007617, male), May 1977 (F Plaumann)(CAS: ADP007597, ADP007601, males, ADP007599, ADP007618, females), June 1977 (F Plaumann)(CAS: ADP007600, ADP007616, females) .

Geographic distribution

(Fig. 11 ). This species is currently known from the states of Minas Gerais, Rio de Janeiro, Santa Catarina, and São Paulo in the Mata Atlântica of Brazil.

Notes.

Reichardt (1971, 1973) reported the following additional specimens that we did not see: Brazil - Minas Gerais: no locality (2 exs. MNHP). Rio de Janeiro: Nova Friburgo (l ex. BMNH). Guanabara, (5 exs. BMNH, MNHP, MZSP). São Paulo: Barueri (l ex. MZSP). Santa Catarina: Nova Teutonia (1 ex. BMNH), Corupá (1 ex. MCZ). Additionally, Chaudoir (1872) mentioned he had two specimens; therefore, a lectotype needs to be designated. Reichardt (1973) mistakenly writes he saw the “holotype.” We have chosen the first of Chaudoir’s specimens as the Lectotype (see above).

Figures

Figure 4. Digital Photo-illustration. Habitus, dorsal aspect. A Hyboptera tiputini Erwin & Henry, sp. n., male, ADP 135850 B Hyboptera viridivittis Chaudoir, male, ADP 007599.

Figure 5. Digital Photo-illustration, male aedeagus in repose, dorsal, ventral, left lateral aspects. A Hyboptera angulicollis Chaudoir, ADP 007330 B Hyboptera biolat Erwin & Henry, sp. n., ADP 007443 C Hyboptera vestiverdis Henry & Erwin, sp. n., ADP 014856 D Hyboptera tiputini Erwin & Henry, sp. n., ADP 135845 E Hyboptera viridivittis Chaudoir, ADP 007601. Legend, lp, left paramere; rp, right paramere; pb, phallobase; bo, phallobase orifice; ps, phalloshaft; a, phalloapex. Scale line = 0.25 mm.

Figure 8. Digital Photo-illustration, female reproductive system dorsal and ventral aspects. Hyboptera lucida Henry & Erwin sp. n., ADP 148100. Legend, bc, bursa copulatrix; sg, spermathecal gland; sgd, spermathecal gland duct; sp, spermatheca. Dorsal aspect; lt, laterotergite; gc 1, gonocoxite 1; gc 2, gonocoxite 2, des, dorsal ensiform seta, b, base of gonocoxite 2; bl, blade of gonocoxite 2. Scale line = 0.25 mm.

Figure 11. Distribution map for known localities of Hyboptera species.