Hyboptera biolat Erwin & Henry, 2017

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 : 80

Hyboptera biolat Erwin & Henry sp. n. Biolat humps-backed beetle Figs 1B , 5B , 11

Holotype.

Male. Perú, Madre de Dios, Manu Reserved Zone, Río Manu, BIOLAT Biological Station, Pakitza, 11.9446°S, 71.2831°W, 356m, 20 September 1991 (TL Erwin)(NMNH: ADP007447).

Derivation of specific epithet.

The specific epithet, biolat , is used as a noun in apposition based on the acronym of the Smithsonian Institution’s past Program "Biodiversity in Latin America" (BIOLAT) which sought to field-train young Latin American biology students in biodiversity techniques and did so for over 200 of them between 1987 and 1991 in Perú and Bolivia. These beetles were collected under the auspices of the BIOLAT Program.

Proposed English vernacular name.

Biolat 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 entirely with metallic green patches, and venter with meso- and metathorax mostly infuscated.

Description.

(Fig. 1B , 5B ). Size: See Appendix 1. Length (SBL) short for genus, ABL = 3.64-4.17 mm, SBL = 3.16-3.74 mm, TW = 1.68-2.33 mm.

Color: See diagnosis, above.

Luster: Metallic highlights, partially iridescent.

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

Head: Rugae moderately coarse, mostly transverse. Eye very 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 and transversely rugose.

Prothorax: Pronotum moderately broad, disc centrally planar with dense transverse rugae. Lateral margins moderately explanate and obtusely angulate medially then straight to narrowly obtuse hind angle, base medially produced and rounded posteriorly.

Pterothorax: Normal for Agrina , fully winged. Elytron interval 3 with 7(8), and interval 5 with 5 (4) discal unisetiferous tubercles, other intervals moderately convex, side margin moderately explanate laterally only at middle third. Elytron broad and moderately short, moderately 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 outer pair of longer setae on sternum 6.

Male genitalia: Phallus (Fig. 5B ) with ostium of 1/5 its length, catopic, apex moderately long, narrowly rounded, narrow in dorsal aspect; endophallus with flagellum (apex extruded 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. Specimens have been acquired using insecticidal fogging methods.

Way of life.

Adults are common in the lowlands (356 m.a.s.l.) and appear to be generalists in a variety of rainforest biotopes including terra firme and upper floodplain forests. In these forests, they are commonly found in suspended dry leaves in Guadua weberbaueri Pilg. bamboo patches and among Astrocaryum chambira Burret palm dry leaf-skirts. Adults have been obtained in September-October; hence, they are active in the late dry and early rainy seasons.

Other specimens examined.

Perú, Madre de Dios, Manu Reserved Zone, Río Manu, BIOLAT Biological Station, Pakitza , 11.9446°S, 71.2831°W, 356m, 4 October 1989 (TL Erwin )(NMNH, ADP007486, male paratype) , 10 October 1991 (TL Erwin, MG Pogue)(NMNH: ADP007398, female paratype) , 11 October 1991 (TL Erwin, MG Pogue)(NMNH: ADP007353, ADP007354, ADP007356, ADP007443, male paratypes, ADP007355 ADP007399, female paratypes), 14 October 1991 (TL Erwin, MG Pogue)(NMNH: ADP007336, male paratype), 16 October 1991 (TL Erwin)(NMNH: ADP007331, male paratype), 23 September 1991 (TL Erwin)(NMNH: ADP007466, male paratype), 28 September 1991 (TL Erwin, MG Pogue)(NMNH: ADP007315, male paratype), 9 October 1991 (TL Erwin, MG Pogue)(NMNH: ADP007311, male paratype).

Geographic distribution

(Fig. 11 ). This species is currently known only from the type locality in Perú in the Río Manu watershed at the Pakitza Vigilante Post where the BIOLAT Biological Station operated from 1987 to 1992.

Notes.

The holotype will be deposited in UNMSM and is currently held in trust until the completion of studies at NMNH. Specimen ADP007443 is missing its fore body.

Figures

Figure 1. Digital Photo-illustration. Habitus, dorsal aspect. A Hyboptera angulicollis Chaudoir, female, ADP 052729 B Hyboptera biolat Erwin & Henry, sp. n., female, ADP 007398.

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.