Eulichas tenuicornis Jäch, 1995

Hájek, Ji Ř Í, 2007, Revision of the genus Eulichas Jacobson, 1913 (Coleoptera: Eulichadidae) I. Introduction, morphology of adults, key to subgenera and species groups, and taxonomy of E. funebris species group, Zootaxa 1620, pp. 1-35 : 16-17

Eulichas tenuicornis Jäch, 1995

( Figs. 21 , 37 , 55–56)

Eulichas tenuicornis Jäch, 1995: 369 (original description, China: Hainan)

Type locality. “Hainan, southern China ”.

Type material. Holotype: 1ɗ ( MNHN), labelled: “I. Hainan / J. Whitehead [printed] // Museum Paris / ex Coll. / R. Oberthur [yellow label, printed] // HOLOTYPE / Eulichas / tenuicornis sp.n. / des. M. Jäch ’95 [red label, printed]”; paratype 1ɗ, same label data as holotype ( NHMW).

Additional material studied. 5 specimens — CHINA: 3ɗɗ 1Ψ, Hainan Island, J. Whitehead ( BMNH, NMPC); 1Ψ, Hainan Isl., Diao Lao Shan, polydominant trop. forest, 900 m, 26.–30.vii.2000, N.L. Orlov leg. ( ZMAS).

Description. Habitus elongate, fusiform. Colouration of head, pronotum and ventral part testaceous to brown-blackish, elytra testaceous. Pale part of setation consists of recumbent greyish setae forming indistinct ocellations on pronotum and elytra, where setae are darker and sparser (Figs. 55–56).

Measurements. Males: 21 mm; females: 26–29 mm.

Head punctation consists of coarse setigerous punctures. Antenna long and slender, reaching beyond half of the body length. Antennomeres 3–10 narrowly serrate, last antennomere very long and thin, ca. 8.29–9.15 times as long as wide ( Fig. 37 ), without any tubercles on its ventral side.

Pronotum largely transverse, ca. 2.20–2.39 times as wide as long. Sides almost rounded with indistinct angle near the middle. Punctation consists of fine, sparse setigerous punctures distributed almost regularly on its dorsal surface.

Elytra with numerous longitudinal rows of large setigerous punctures, and poorly visible fine interstitial punctures.

Ventral part with fine punctures, which are sparse medially and become larger and denser laterally. It is covered with greyish setation. Last abdominal ventrite laterally regularly rounded in basal two thirds, and then narrowed distinctly to apex.

Male. Aedeagus generally similar to that of E. funebris species complex. Subapical parameral hook well developed, median lobe subparallel basally, and narrowed to the apex ( Fig. 21 ).

Female. Similar to male in habitus, but larger. Greyish colouration more distinct than in male. Antenna short and slender, last antennomere only 3.42–3.50 times as long as wide. Last abdominal ventrite laterally regularly rounded to apex.

Collection circumstances. According to the label data, the recently collected female was captured in polydominant tropical forest.

Distribution. A species endemic to Hainan Island, south-eastern China.

Figures

FIGURES 19 – 26. Aedeagus of Eulichas in dorsal view. 19 – E. funebris; 20 – E. meghalayensis sp. nov.; 21 – E. tenuicornis; 22 – E. tonkinensis; 23 – E. undulata; 24 – E. haucki sp. nov.; 25 – E. kubani sp. nov.; 26 – E. pacholatkoi. Scale bar 1.5 mm.

FIGURES 35 – 50. Male antennomeres IX – XI of Eulichas. 35 – E. funebris; 36 – E. meghalayensis sp. nov.; 37 – E. tenuicornis; 38 – E. tonkinensis; 39 – E. undulata; 40 – E. haucki sp. nov.; 41 – E. kubani sp. nov.; 42 – E. pacholatkoi; 43 – E. birmanica sp. nov.; 44 – E. jaechi sp. nov.; 45 – E. strbai sp. nov.; 46 – E. tanahrata sp. nov.; 47 – E. janbezdeki sp. nov.; 48 – E. milleri; 49 – E. mediocris; 50 – E. minuta sp. nov. Scale bar 1 mm.