AnimaliaColeopteraLycidaeBocekMatejBocakLadislavSpecies limits in polymorphic mimetic Eniclases net-winged beetles from New Guinean mountains (Coleoptera, Lycidae)Zookeys26520162016593153510.3897/zookeys.593.7728 Eniclases variabilis http://zoobank.org/31A354C9-5025-44C6-878A-5D411699CEB6 sp. n.Figs 20–29, 38, 47Material examined.

Holotype. Male (BM0054), Indonesia, Irian Jaya, Elelim, path to Apalapsili, 600 m, Nov.–Dec. 1991 (LMBC). Paratypes. 1 male, 3 females (BM0048–49, 53, 55), same data as the holotype; 7 males, 8 females (BM0025–32, 34–36, 86, 88, 90–91), Indonesia, Irian Jaya, Bokondini, 1300 m, Nov.–Dec. 1991; 4 males, female (BM0063–67), Indonesia, Irian Jaya, Dombomi, Lower Pass valley, 1200 m; 2 males (BM0008, 12), Indonesia, Irian Jaya, Sentani, Cyclops Mts., 300 m, Nov.–Dec. 1991 (LMBC).

Diagnosis.

Eniclases variabilis is a widespread, highly polymorphic species and resembles in general appearance several distinct, sympatric mimetic types. The color forms are illustrated in Figs 20–29. Similarly colored individuals of Eniclases niger differ in the large eyes (1.17–1.28 times larger than eye distance) and acutely serrate antennae of Eniclases variabilis (Figs 38, 40). The similarly colored individuals of Eniclases elelimensis can only be identified using the DNA data.

Description.

Male. Body length 6.6–8.2 mm. Head, antennae, thorax, and abdomen dark black, elytra orange yellow in humeral third, rest of elytra black, transitional zone between bright and dark part of elytra is narrow (Figs 20–29, 38), trochanters brown, rest of legs black. Head with small, hemispherically prominent eyes, their diameter 0.83–0.95 interocular distance, antennae flat, slender, acutely serrate, apical process of antennomere 3 about half length of its body, further antennomeres similar in shape. Pronotum transverse, with weak bulge in basal third, elytra with weak secondary costae and mostly regular, subquadrate cells (Fig. 20).

Distribution.

Central North New Guinea.

Etymology.

The specific name refers to exceptional variability in coloration.

Remark.

Eniclases variabilis can be differently colored in various localities. Generally, the dark colored specimens (Fig. 27) were found in higher elevations in Bokondini (1300 m) and Dombomi (1200 m) and bright colored individuals (Figs 22–23, 26) were collected in lower elevations in Elelim (600 m) and Cyclops Mts. (300 m) (Fig. 3).

Habitus of Eniclases: 18 Eniclases bokondinensis sp. n., female 19 Eniclases elelimensis, female 20–29 Eniclases variabilis sp. n. Scale bars: 2 mm.

Basal antennomeres of (Figs 30–42): 30 Eniclases apertus, male 31 Eniclases bicolor sp. n., female 32 Eniclases bokondinensis sp. n., female 33 Eniclases brancuccii sp. n., male 34 Eniclases divaricatus, male 35 Eniclases infuscatus sp. n., female 36 Eniclases pseudoluteolus, male 37 Eniclases similis, male 38 Eniclases variabilis sp. n., male 39 Eniclases elelimensis, male 40 Eniclases niger sp. n., female 41 Eniclases tikapurensis, male 42 Eniclases pseudoapertus sp. n., male. Male genitalia, ventral view (Figs 43–50): 43 Eniclases pseudoapertus sp. n. 44 Eniclases divaricatus 45 Eniclases tikapurensis sp. n. 46 Eniclases brancuccii sp. n. 47 Eniclases variabilis sp. n. 48 Eniclases pseudoluteolus sp. n. 49 Eniclases niger sp. n. 50 Eniclases similis. Scale bars: 0.5 mm.

3 The positions, coordinates and elevations of sampled localities in the Central Mountains of New Guinea 4 Density plots of genetic distances of all Eniclases samples 5 Density plots of intra- and interspecific genetic distances between pairs of closely related species of Eniclases (Eniclases infuscatus and Eniclases bicolor; Eniclases tikapurensis and Eniclases sp. A; Eniclases variabilis, Eniclases elelimensis and Eniclases bokondinensis; Eniclases niger and Eniclases similis).