Hyboptera tepui 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 : 88

Hyboptera tepui Erwin & Henry sp. n. Tepui humps-backed beetle Figs 3B , 11

Holotype.

Female. Venezuela, Amazonas, Cerro de la Neblina, Río Baria Basecamp, 0.837°N, 66.162°W, 138m, 20 February 1985 (PJ Spangler, PM Spangler, et al.)(NMNH: ADP007576).

Derivation of specific epithet.

The species epithet " tepui " is used as a noun in apposition and is based on the type of Venezuelan flat-topped upland near which the holotype was found.

Proposed English vernacular name.

Tepui humps-backed beetle.

Diagnosis.

With the attributes of the genus and angulicollis species group as described above and adults without pronotal markings, pronotal surface rufotestaceous. Elytron with lateral margin broadly testaceous from humerus to sutural apex; apical abdominal tergite testaceous with slight infuscation at extreme posterior-lateral corners.

Description.

(Fig. 3B ). Size: See Appendix 1. Length (SBL) long for genus, ABL = 5.16 mm, SBL = 4.29 mm, TW = 2.458 mm.

Color: See diagnosis, above.

Luster: Metallic green highlights, partially iridescent.

Microsculpture: Mostly irregular isodiametric, often stretched, shallowly impressed, cells especially 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 transversely rugose.

Prothorax: Pronotum markedly broad, disc 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 intervals 3 and 5 each with 6 discal unisetiferous tubercles, interval 3 with one subtle tubercle near apex, other intervals shallowly to moderately convex, side margin broadly explanate laterally only at middle third. Elytron 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 unknown.

Male genitalia: Unknown.

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

Dispersal potential.

These beetles are macropterous and capable of flight. They are moderately swift and agile runners. The holotype was acquired at black light in a rainforest clearing.

Way of life.

The single known adult was found in February in lowland (138 m.a.s.l.) terra firme forests.

Other specimens examined.

None.

Geographic distribution

(Fig. 11 ). This species is currently known only from the type locality in lowland Venezuela.

Figures

Figure 3. Digital Photo-illustration. Habitus, dorsal aspect. A Hyboptera shasta Erwin, sp. n., male, ADP 135875 B Hyboptera tepui Erwin & Henry, sp. n., male, ADP 007676.

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.