Aenictosymbia cornuta Maruyama, 2014

Maruyama, Munetoshi, Komatsu, Takashi, Katayama, Yuji, Song, Xiao-Bin & Sakchoowong, Watana, 2014, Myrmecophilous rove beetles (Coleoptera: Staphylinidae) associated with Aenictus hodgsoni (Hymenoptera: Formicidae) from Thailand, with description of two new genera and three new species, Zootaxa 3796 (2), pp. 361-373 : 365-369

publication ID

https://doi.org/ 10.11646/zootaxa.3796.2.8

publication LSID

lsid:zoobank.org:pub:9F9DA323-128B-44A7-9414-798B50DAAC44

DOI

https://doi.org/10.5281/zenodo.4915261

persistent identifier

https://treatment.plazi.org/id/47028781-7148-FFB6-7E91-FAFBA864FD5D

treatment provided by

Felipe

scientific name

Aenictosymbia cornuta Maruyama
status

sp. nov.

Aenictosymbia cornuta Maruyama View in CoL , sp. n.

( Figs. 10–32 View FIGURES 10–12 View FIGURES 13–23 View FIGURES 24–32 )

Type series. Holotype, ♂, " THAI: Nakhon Ratchasima, / Khao Yai National Park, / Heaw Suwat (750 m), / 30 IX 2007, Maruyama M., / Komatsu T. & Katayama Y. / MM-AE029 // HOLOTYPE / Aenictoxenides / mirabilis / det. Maruyama, 2014" (male 8th abdominal segment and aedeagus dissected and glued on paper card together with body) ( KUM) . Paratypes, 1♂, 3♀, " THAI: Nakhon Ratchasima, / Khao Yai National Park, / Kong Kaew (700 m), / 1 X 2007, Maruyama M. / MM-AE032" ( KUM, DNP) .

Description. Body ( Figs. 10–12 View FIGURES 10–12 ) small. Reddish brown, but head and elytra darker; mouthparts reddish yellow.

Head ( Figs. 10–14 View FIGURES 10–12 View FIGURES 13–23 ) with horn truncate at apex, with 12–15 macrosetae on dorsal disc. Antennae ( Figs. 10–13 View FIGURES 10–12 View FIGURES 13–23 ) slender, with all segments longer than wide; segment I shorter than II and III combined; segment II slightly shorter than III; segment IV–X equally in length but becoming wider toward apex; segment XI slightly shorter than IX and X combined.

Pronotum ( Figs. 10–13, 19, 20 View FIGURES 10–12 View FIGURES 13–23 ) constricted at basal 1/3; PL/PW= 1.53, with 12–14 macrosetae on dorsal disc and lateral margin. Elytra ( Figs. 10–13, 22 View FIGURES 10–12 View FIGURES 13–23 ) almost as long as pronotum, with 3 macrosetae and several minute setae.

Abdomen with convexity of sternite III ( Fig. 11 View FIGURES 10–12 ) large, flattened ventrally, slightly notched on anterior margin in ventral view, shallowly depressed in midline; tergite VIII ( Fig. 26 View FIGURES 24–32 ) shallowly emarginated at apex, with 4 short macrosetae; sternite VIII ( Fig. 27 View FIGURES 24–32 ) with 5 macrosetae and 2 or 3 thin setae postero medially.

Male: Median lobe of aedeagus ( Figs. 29–30 View FIGURES 24–32 ) with basal ridge small, serrate at apex; sclerites of internal sac dentate; apical lobe of paramere ( Fig. 31 View FIGURES 24–32 ) long, thick, with 4 small setae.

Female: Spermatheca ( Fig. 32 View FIGURES 24–32 ) with basal part about 3 times as long as apical part, which is slightly swollen at apex.

Measurements. BL, ca. 2.6 – 2.7; FBL, ca. 1.6 – 1.7; HW, 0.47 – 0.53; AL, 1.55 – 1.63; PL, 0.65 – 0.67; PW, 0.40 – 0.41; HTL, 0.99 – 1.02 (N=3).

Differential diagnosis. This species is similar to Aenictophila thailandica Seevers, 1965 in general appearance, but easily distinguished from it by the much smaller body. See also Diagnosis of the genus.

Etymology. The Latin adjective cornuta meaning "horned", bringing attention to a horn on the frons of the head.

Symbiotic host. Aenictus hodgsoni .

Distribution. Central Thailand.

T

Tavera, Department of Geology and Geophysics

KUM

Resource Management Support Center

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

Tribe

Lomechusini

Genus

Aenictosymbia

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