Batrisodes (Excavodes) dorothae Ferro and Carlton

Ferro, Michael L. & Carlton, Christopher E., 2014, Two new species of Batrisodes Reitter (Coleoptera: Staphylinidae: Pselaphinae) from eastern North America, Insecta Mundi 2014 (380), pp. 1-21 : 4-6

publication ID

https://doi.org/ 10.5281/zenodo.5179466

publication LSID

lsid:zoobank.org:pub:A0E7D35A-7233-4A1F-A16E-6301C4BF36F2

persistent identifier

https://treatment.plazi.org/id/1E5E155C-487E-FFFA-FF6B-FD67FE96D13F

treatment provided by

Felipe

scientific name

Batrisodes (Excavodes) dorothae Ferro and Carlton
status

 

1. Batrisodes (Excavodes) dorothae Ferro and Carlton View in CoL

Figures 1–21 View Figures 1–6 View Figures 7–10 View Figure 11 View Figure 12 View Figure 13 View Figure 14 View Figure 15 View Figure 16 View Figure 17 View Figure 18 View Figure 19 View Figures 20–21 ; Map 1

Holotype, male: * Feliciana Preserve 6 mi. ESE of St. Francisville 30°47’N 91°15’W 25 August 1995 D.Pashley / LSAM 0096001 View Materials . Specimen deposited in FMNH. GoogleMaps

Description: Holotype, male. Head 0.47 mm long (tip of clypeal horn to cervix); pronotum 0.40 mm long (dorsal, base to apex); elytra 0.66 mm long (base to apex, along suture); abdomen 0.72 mm long; total 2.25 mm. Holotype pale, teneral ( Fig. 1 View Figures 1–6 ); mature paratypes reddish-brown with paler palpi and legs. Pubescence elongate, semiappressed, flavous.

Head ( Fig. 4–7 View Figures 1–6 View Figures 7–10 , 11–14 View Figure 11 View Figure 12 View Figure 13 View Figure 14 ) elongate with prominent subreniform eyes of about 42 facets; supraocular carina absent ( Fig. 7 View Figures 7–10 ); lateral vertexal carina extending from temporal angles anteriorly, becoming obsolete just before reaching antennal incisures ( Fig. 7 View Figures 7–10 ); median vertexal carina short, extending from apical pronotal margin to level of vertexal foveae, obsolete apically ( Fig. 7 View Figures 7–10 ); vertexal foveae deep, nude ( Fig. 7 View Figures 7–10 ); circumambient sulcus well developed, same depth throughout, extending anteriorly to line drawn between anterior margins of eyes ( Fig. 3–7 View Figures 1–6 View Figures 7–10 ); interfoveal integument shining and subimpunctate, clothed with a few long erect setae that converge apically to arch over interfoveal center ( Fig. 6 View Figures 1–6 ); vertex-front long, shallowly declivous, lighter than rest of head; overhanging frontal margin with anterior concavity, anterolateral sides produced, pair of apical setal tufts one third distance from lateral edges with setae curved medially, nearly touching clypeal horn ( Fig. 4–6 View Figures 1–6 ); face deeply excavate between antennal acetabulae ( Fig. 11 View Figure 11 ); clypeus medially elongate as conspicuous frontal horn projecting anteriorly beyond mandibles and vertically to level of the vertex between antennae ( Fig. 4, 5 View Figures 1–6 , 11–13 View Figure 11 View Figure 12 View Figure 13 ).

Antennae ( Fig. 3, 4, 6 View Figures 1–6 , 7 View Figures 7–10 , 12–14 View Figure 12 View Figure 13 View Figure 14 ) 11-segmented; segment I large, globose ventrally ( Fig. 6 View Figures 1–6 , 7 View Figures 7–10 , 12 View Figure 12 , 13 View Figure 13 ); segment II elongate ( Fig. 14 View Figure 14 ); segment III obconical ( Fig. 14 View Figure 14 ); segments IV–VIII similar, becoming transverse; segment IX abruptly wider than VIII ( Fig. 14 View Figure 14 ); segment X wider than eleventh, globular from above, with ventral face concave, concavity bearing in mesobasal area a small fovea ( Fig. 14 View Figure 14 ); segment XI with truncate base, pubescent, dorsal face slightly flattened, basal ridge of the segment without spines or teeth ( Fig. 14 View Figure 14 ). Antennal segment lengths 0.09, 0.06, 0.04, 0.04, 0.04, 0.04, 0.04, 0.04, 0.06, 0.09, 0.18 mm.

Pronotum ( Fig. 3, 4 View Figures 1–6 , 8 View Figures 7–10 , 15 View Figure 15 ) arcuate, greatest width at apical three fifths ( Fig. 3 View Figures 1–6 ); medial antebasal fovea and lateral antebasal foveae well developed, pubescent ( Fig. 8 View Figures 7–10 ); medial sulcus and lateral sulci becoming obsolete apically ( Fig. 8 View Figures 7–10 ); longitudinal carinae short, poorly developed with distinct acuminate basal spine ( Fig. 8 View Figures 7–10 ); median antebasal fovea connected to basal margin by longitudinal carina ( Fig. 8 View Figures 7–10 ).

Elytra ( Figs 2, 3 View Figures 1–6 , 9 View Figures 7–10 ) with humeral angle produced, ending with an acute tooth ( Fig. 3 View Figures 1–6 , 9 View Figures 7–10 ), evenly covered in widely separated semi-appressed pubescence ( Fig. 2, 3 View Figures 1–6 ); subhumeral fovea distinct, with subhumeral sulcus extending to elytral apex ( Fig. 9 View Figures 7–10 ); three basal elytral foveae present, deep, nude ( Fig. 9 View Figures 7–10 ); sutural stria entire ( Fig. 9 View Figures 7–10 ).

Thorax ( Fig. 16 View Figure 16 ). Metasternum medially flattened, the flattened area weakly longitudinally sulcate, the sulcus deepened apically into median preapical fovea. Metathoracic wings present. Thoracic foveation as for genus.

Abdomen ( Fig. 1–3 View Figures 1–6 , 10 View Figures 7–10 , 16 View Figure 16 ) as for supertribe ( Chandler 2001), with five visible tergites (IV–VIII) and six ventrites (III–VIII), visible ventrites 1–2 (III–IV) fused; sixth ventrite (6, VIII) with posterolateral corners elevated into low tumuli, and with transverse arcuate subapical sulcus ( Fig. 10 View Figures 7–10 ).

Legs ( Fig. 1, 2 View Figures 1–6 ). Prothoracic legs simple, primary tarsal claw not bifid. Mesothoracic tibia with short apical spur of very approximate setae; mesotarsi simple. Metathoracic legs with the tibia bearing long apical setal spur.

Aedeagus ( Fig. 21 View Figures 20–21 ) flat, parallel sided, with acuminate tip; 0.30 mm long.

Paratypes (n=10). UNITED STATES: LOUISIANA: East Feliciana Parish: *USA: LA:E. Felicia. Par., Clinton III-24-2000, exotic bark beetles survey (LSAM, 2M). West Feliciana Parish: *LOUISI- ANA: W Feliciana Par., Feliciana Preserve 30°47’N 91°15’W. Flight intercept. 2-17 Mar 2002 A.Cline & A.Tishechkin / LSAM0029394 (1M). * LOUISIANA: W Feliciana Par., Feliciana Preserve 30°47’N 91°15’W. Flight intercept, sample A. 7 Mar- 23 May 2004. A. Tishechkin / LSAM 0096078 / Batrisodes n. sp. Det. C. E. Carlton 2011 (1M, specimen destroyed, single leg remains). *USA: LA: W.Feliciana Par. Feliciana Preserve 6 mi. ESE of St. Francisville 30°47’N 91°15’W FIT 10-30March 1996 D.Pashley / LSAM 0096014 (1M). * LOUISIANA: W Feliciana Par., Feliciana Preserve 30°47’N 91°15’W. Flight intercept. 15 March – 14 April 2003. A.Tishechkin / LSAM 0235274 (1M). *USA: LA, W. Feliciana Par. Tunica Hills WMA Forest Litter. 6.IV.1995 D.Colby & D Landau leg. / LSAM 0096000 (1M). *USA: LA, W. Feliciana Par. Tunica Hills. WMA 1-10 May 1995. D. Pashley / LSAM0001528 (1F). *USA: LA: W.Feliciana Par. Feliciana Preserve 6 mi. ESE of St. Francisville 30°47’N 91°15’W 25 August 1995 D.Pashley / LSAM 0096001 (1M). SOUTH CAROLINA: Darlington / Florence Counties: *USAS- CFLORENCE/DARLINGTON CoLineRidge Hope Pres 34°12’15”N 79°42’24”WE1320’ J&SCornell24X09 Berl Wash Soil Litter by rotten Pine Stump / LSAM 0235465 (1M).

Geographical Distribution. The majority of specimens of Batrisodes dorothae were collected in Feliciana Preserve, West Feliciana Parish, Louisiana (N 30.795°, W 91.254°; elevation 40 m [130 ft]) and from nearby Tunica Hills Wildlife Management Area (Map 1). Both localities encompass a portion of the Tunica Hills, an area with deep forested ravines, and a refugium for mixed mesophytic forest species during the Wisconsin glaciation ( Delcourt and Delcourt 1975). The preserve has been the site of previous entomological studies (see list in Ferro et al. 2009) and consists of a secondary mixed mesophytic forest dominated by magnolia ( Magnolia grandiflora L.), holly ( Ilex opaca Aiton ), beech ( Fagus grandifolia Ehrhart ), pine ( Pinus spp. ), and several species of oak ( Quercus spp. ). One specimen was collected from South Carolina (elevation 402 m [1320 ft]) indicating that the species is probably more widespread in southeastern United States than current data indicate.

Comments: Batrisodes dorothae adults have been collected during March – October. Specimens were collected from a rotten pine stump, from forest litter using a Berlese funnel, and with a flight intercept trap.

Batrisodes dorothae superficially resembles B. lineaticollis Aubé. The two species can be separated with the following characters ( B. lineaticollis in parentheses): head elongate (head subquadrate); median vertexal carina low (median vertexal carina pronounced, rising above level of rest of head); well-defined circumambient sulcus not extending beyond a line drawn between the front of the eyes (circumambient sulcus poorly defined, becoming obsolete apically); vertex-front long, truncate apically, subimpunctate (vertex-front short, rounded, roughly sculptured); antennal insertions exposed (antennal insertions concealed); aedeagus with acuminate tip (aedeagus with blunt tip).

Etymology. This species is named for Dorothy (Pashley) Prowell, collector of the holotype, principal developer of Feliciana Preserve, the type locality, and a tireless promoter of education and conservation. Diagnosis of subgenus Babnormodes Park 1951 (males)

Male members of the subgenus Babnormodes can be distinguished from other subgenera within Batrisodes by the following characters: protibiae are often flattened and twisted in the apical half ( Chandler et al. 2009); mesotarsi abnormal, tarsomere 2 excavate along ventral margin ( Park 1951, 1953).

FMNH

Field Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

Genus

Batrisodes

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