Zarcosia weigeli, Gompel, 2020

Gompel, Nicolas, 2020, Synopsis of the Asian species in the genus Zarcosia Collado & Alonso-Zarazaga 1996 with new combinations and descriptions of fourteen new species, Zootaxa 4838 (2), pp. 151-178 : 177-178

Zarcosia weigeli n. sp.

( Figures 1 ; 3e ; 4r ; 5i,t ; 6d )

Etymology. The species is named after Andreas Weigel in recognition of her efforts to collect material for others.

Type locality. China: Yunnan, Xishuangbanna, 23 km NW Jinghong, vic. Na Ban [22°09’ N 100°40’ E] .

Distribution. China: Yunnan.

Description. ( Figure 3i,j ). Female unknown. Body length. ♂: 2.53± 0.04 mm (n=2). Entirely black, elongated, covered with thin blond pubescence.

Head. Small, weakly transverse, slightly wider than pronotum. Palpi dark brown, last article securiform. Punctation coarse, dense. Posterior margin lined with a fringe of dense white pubescence.

Antennae. Subfiliform, slightly longer than elytra, black. Antennomere 3–8 more than twice as long as wide. Covered with hirsute white pubescence.

Pronotum ( Figure 6d ). Subcylindrical, convex, longer than wide, sides weakly but regularly convex. Strongly and densely punctuated, points deep.

Elytra. Length: ♂: 1.75±0.00 mm (n=2). Punctation stronger than on pronotum, dense, points deep, well defined. Covered with double pubescence: moderately long hair borne from punctation and interspersed whitish pulverulent hairs ( Figure 5i ). Moderately convex, depressed on disc.

Legs. Long and thin, black, except last two tarsomeres, yellow. Sexual characters. Male foretibia weakly bent inward, with a small acute tooth on their inner side ( Figure 5t ).

Aedeagus ( Figure 4r ). Simple, sturdy, sides parallel in dorsal view, progressively tapered in a regular triangle in apical fourth. Hardly bent in lateral view, with a weak apical upward deflection.

Type material. Holotype (♂, NME). China: Yunnan, Xishuangbanna, 23 km NW Jinghong, vic. Na Ban ( NNNR), 22°09’ N 100°40’ E (730 m), Transition zone MF ( A. Weigel) 23.V.2008 . Paratype. China: Yunnan, Xishuangbanna, 23 km NW Jinghong, vic. Na Ban ( NNNR), 22°09’ N 100°40’ E (730 m) , secondary forest, Rubber plant ( A. Weigel) 20.V.2008 (1 ♂ paratype, NGPC) .

Figures

FIGURE 1. Distribution of Zarcosia species across South Asia. New taxa are indicated in boldface. For Z. lemairei n. sp., the broader geographical range is highlighted with a red area with a dotted line.

FIGURE 3. Habitus of new Zarcosia species. a, Z. lemairei n. sp., ♂ holotype, from Laos. b, Z. lemairei n. sp., ♀ paratype, from Laos. c, Z. ilonae n. sp., ♂ holotype, from Thailand. d, Z. gerstmeieri n. sp., ♂ holotype, from Vietnam. e, Z. weigeli n. sp., ♂ holotype, from China (Yunnan). f, Z. deharvengi n. sp., ♂ holotype, from Republic of Indonesia (Sumatra). g, Z. sumatrensis n. sp., ♂ holotype, from Republic of Indonesia (Sumatra). h, Z. sumatrensis n. sp., ♀ paratype, from Republic of Indonesia (Sumatra). i, Z. barclayi n. sp., ♂ holotype, from Malaysia. j, Z. barclayi n. sp., ♀ paratype, from Malaysia. k, Z. schawalleri n. sp., ♂ holotype, from Malaysia. l, Z. schawalleri n. sp., ♀ paratype, from Malaysia. m, Z. bedosae n. sp., ♂ holotype, from Laos. n, Z. sinuata n. sp., ♂ holotype, from Thailand. o, Z. sinuata n. sp., ♀ paratype, from Thailand. p, Z. spinifemur n. sp., ♂ holotype, from Sri Lanka. q, Z. dentatifemur (Pic, 1912), ♂ holotype, from Sri Lanka, after remounting (same specimen as in Fig. 2o). r, Z. srilankaensis n. sp., ♂ paratype, from Sri Lanka. s, Z. intermedia n. sp., ♂ paratype, from Sri Lanka. s, Z. brunnea n. sp., ♂ paratype, from Sri Lanka. Scale bars: 0.5 mm.

FIGURE 4. Aedeagus of selected Zarcosia species. a, Z. barclayi n. sp., holotype, from Malaysia, lateral and dorsal views. b, Z. bedosae n. sp., holotype, from Laos, lateral and dorsal views. c, Z. bipartita (Pic, 1901) from India, lateral view. d, Z. cephalica (Pic, 1901) from Republic of Indonesia, lateral view. e, Z. deharvengi n. sp., holotype, from Laos, lateral and dorsal views. f, Z. gerstmeieri n. sp., holotype, from Vietnam, lateral and dorsal views. g, Z. ilonae n. sp., holotype, from Thailand, lateral and dorsal views. h, Z. kempi (Blair, 1924), holotype, from India, lateral and dorsal views. i, Z. lemairei n. sp., holotype, from Laos, lateral and dorsal views. j, Z. obscuricornis (Pic, 1927) from Vietnam, lateral view. k, Z. palliditarsis (Pic, 1912) from Sri Lanka, lateral view. l, Z. picina (Fairmaire, 1893), lectotype, from Vietnam, lateral view. m, Z. rubrobasalis (Pic, 1921) (slight uncertainty on the identity of this specimen) from Singapore, lateral view. n, Z. schawalleri n. sp., holotype, from Malaysia, lateral and dorsal views. o, Z. sinuata n. sp., holotype, from Thailand, lateral and dorsal views. p, Z. sumatrensis n. sp., holotype, from Republic of Indonesia (Sumatra), lateral and dorsal views. q, Z. troglodytes (Champion, 1916), holotype, from Malaysia, lateral view. r, Z. weigeli n. sp., holotype, from China (Yunnan), lateral and dorsal views. s, Z. spinifemur n. sp., holotype, from Sri Lanka, lateral and dorsal views. t, Z. dentatifemur (Pic, 1912), holotype, from Sri Lanka, lateral and dorsal views. u, Z. srilankaensis n. sp., paratype, from Sri Lanka, lateral and dorsal views. v, Z. intermedia n. sp., paratype, from Sri Lanka, lateral and dorsal views. w, Z. brunnea n. sp., paratype, from Sri Lanka, lateral and dorsal views. Scale bars: 100 µm.

FIGURE 5. Morphological details of selected Zarcosia species. a–d, Z. lemairei n. sp., ♂ holotype, from Laos: head in lateral (a), frontal (b) and dorsal (c) views; mesothoracic (left) and metathoracic (right) tarsae (d). e–g, Z. palliditarsis (Pic, 1912), ♂, from Sri Lanka: head in lateral (e), frontal (f) and dorsal (g) views. h, Z. srilankaensis n. sp., ♂ paratype, from Sri Lanka: tuft of pubescence at elytral apex. i, Z. weigeli n. sp., ♂ holotype, from China (Yunnan): elytral pubescence on disc. j, Z. gerstmeieri n. sp., ♂ holotype, from Vietnam: elytral pubescence on disc. k–t: male forelegs of Z. ilonae n. sp., holotype, from Thailand (k); Z. deharvengi n. sp., holotype, from Republic of Indonesia (Sumatra) (l); Z. schawalleri n. sp., holotype, from Malaysia (m); Z. sinuata n. sp., holotype, from Thailand (n); Z. sumatrensis n. sp., holotype, from Republic of Indonesia (Sumatra) (o); Z. srilankaensis n. sp., paratype, from Sri Lanka (p); Z. intermedia n. sp., paratype, from Sri Lanka (q); Z. dentatifemur (Pic, 1912), holotype, from Sri Lanka (r); Z. brunnea n. sp., paratype, from Sri Lanka (s); Z. weigeli n. sp., holotype, from China (Yunnan) (t). u–x: male mesothoracic legs of Z. cephalica (Pic, 1901) from Republic of Indonesia (u); Z. gerstmeieri n. sp., holotype, from Vietnam (v); Z. dentatifemur (Pic, 1912), holotype, from Sri Lanka (w); Z. spinifemur n. sp., holotype, from Sri Lanka (x). Scale bars: 100 µm.

FIGURE 6. Thoraces of selected Zarcosia species in dorsal view. a, Z. lemairei n. sp., ♂ holotype, from Laos (left) and Z. lemairei n. sp., ♀ paratype, from Laos (right). b, Z. ilonae n. sp., ♂ holotype, from Thailand. c, Z. gerstmeieri n. sp., ♂ holotype, from Vietnam. d, Z. weigeli n. sp., ♂ holotype, from China (Yunnan). e, Z. deharvengi n. sp., ♂ holotype, from Republic of Indonesia (Sumatra). f, Z. sumatrensis n. sp., ♂ holotype, from Republic of Indonesia (Sumatra) (left) and Z. sumatrensis n. sp., ♀ paratype, from Republic of Indonesia (Sumatra) (right). g, Z. barclayi n. sp., ♂ holotype, from Malaysia (left) and Z. barclayi n. sp., ♀ paratype, from Malaysia (right). h, Z. schawalleri n. sp., ♂ holotype, from Malaysia (left) and Z. schawalleri n. sp., ♀ paratype, from Malaysia (right). i, Z. bedosae n. sp., ♂ holotype, from Laos. j, Z. sinuata n. sp., ♂ holotype, from Thailand (left) and Z. sinuata n. sp., ♀ paratype, from Thailand (right). k, Z. dentatifemur (Pic, 1912), holotype, from Sri Lanka. l, Z. intermedia n. sp., ♂ paratype, from Sri Lanka. m, Z. srilankaensis n. sp., ♂ paratype, from Sri Lanka. n, Z. spinifemur n. sp., ♂ holotype, from Sri Lanka. o, Z. brunnea n. sp., ♂ paratype, from Sri Lanka. Scale bars: 100 µm.